Lint Report: 186 warnings
Issue Types

Overview

Correctness
2warning DefaultLocale: Implied default locale in case conversion
1warning SimpleDateFormat: Implied locale in date format
1warning FragmentTagUsage: Use FragmentContainerView instead of the <fragment> tag
9warning GradleDependency: Obsolete Gradle Dependency
2warning ExtraText: Extraneous text in resource files
6warning SpUsage: Using dp instead of sp for text sizes
3warning UseCompatTextViewDrawableXml: Compat compound drawable attributes should be used on TextView
Performance
1warning ObsoleteLayoutParam: Obsolete layout params
2warning ObsoleteSdkInt: Obsolete SDK_INT Version Check
4warning StaticFieldLeak: Static Field Leaks
1warning MergeRootFrame: FrameLayout can be replaced with <merge> tag
1warning UseValueOf: Should use valueOf instead of new
1warning DisableBaselineAlignment: Missing baselineAligned attribute
5warning UnusedResources: Unused resources
2warning RedundantNamespace: Redundant namespace
Usability
1warning TextFields: Missing inputType
4warning Autofill: Use Autofill
Accessibility
6warning ContentDescription: Image without contentDescription
Internationalization
39warning SetTextI18n: TextView Internationalization
51warning HardcodedText: Hardcoded text
Internationalization:Bidirectional Text
7warning RtlSymmetry: Padding and margin symmetry
36warning RtlHardcoded: Using left/right instead of start/end attributes
Testing
1warning IgnoreWithoutReason: @Ignore without Reason
Disabled Checks (35)

Implied default locale in case conversion

../../src/main/java/com/example/qr_go/adapters/UserArrayAdapter.java:140: Implicitly using the default locale is a common source of bugs: Use toLowerCase(Locale) instead. For strings meant to be internal use Locale.ROOT, otherwise Locale.getDefault().
 137             if (constraint == null || constraint.length() == 0) {
 138                 filteredList.addAll(allUserDisplays);
 139             } else {
 140                 String filterPattern = constraint.toString().toLowerCase().trim();                  
 141 
 142                 for (UserListDisplayContainer item : allUserDisplays) {
 143                     if (item.getUsername().toLowerCase().contains(filterPattern)) {
../../src/main/java/com/example/qr_go/adapters/UserArrayAdapter.java:143: Implicitly using the default locale is a common source of bugs: Use toLowerCase(Locale) instead. For strings meant to be internal use Locale.ROOT, otherwise Locale.getDefault().
 140                String filterPattern = constraint.toString().toLowerCase().trim();
 141 
 142                for (UserListDisplayContainer item : allUserDisplays) {
 143                    if (item.getUsername().toLowerCase().contains(filterPattern)) {                 
 144                        filteredList.add(item);
 145                    }
 146                }
DefaultLocale Correctness Warning Priority 6/10

Implied locale in date format

../../src/main/java/com/example/qr_go/objects/CommentsQR.java:53: To get local formatting use getDateInstance(), getDateTimeInstance(), or getTimeInstance(), or use new SimpleDateFormat(String template, Locale locale) with for example Locale.US for ASCII dates.
 50         details.put("Username", user.getUsername());
 51         details.put("Message", message);
 52         Date date = Calendar.getInstance().getTime();
 53         DateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd '@'hh:mm:ss a");                   
 54         String strDate = dateFormat.format(date);
 55         comments.put(strDate, details);
 56     }
SimpleDateFormat Correctness Warning Priority 6/10

Use FragmentContainerView instead of the <fragment> tag

../../src/main/res/layout/activity_maps.xml:20: Replace the <fragment> tag with FragmentContainerView.
 17         app:layout_constraintRight_toRightOf="parent"
 18         app:menu="@menu/bottom_nav_menu" />
 19 
 20     <fragment xmlns:android="http://schemas.android.com/apk/res/android"
                           
 21         xmlns:map="http://schemas.android.com/apk/res-auto"
 22         xmlns:tools="http://schemas.android.com/tools"
 23         android:id="@+id/map"
Vendor: Android Open Source Project (fragment-1.4.0)
Identifier: fragment-1.4.0
Feedback: https://issuetracker.google.com/issues/new?component=192731
FragmentTagUsage Correctness Warning Priority 5/10

Obsolete Gradle Dependency

../../build.gradle:43: A newer version of com.google.android.gms:play-services-maps than 17.0.1 is available: 18.0.2
 40     implementation 'com.github.yuriy-budiyev:code-scanner:2.1.1'
 41     implementation 'androidx.appcompat:appcompat:1.4.1'
 42     implementation 'com.google.android.material:material:1.5.0'
 43     implementation 'com.google.android.gms:play-services-maps:17.0.1'
                              
 44     implementation 'androidx.constraintlayout:constraintlayout:2.1.3'
 45     implementation 'com.google.firebase:firebase-firestore:24.0.1'
 46     implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.4.0'
../../build.gradle:45: A newer version of com.google.firebase:firebase-firestore than 24.0.1 is available: 24.1.1
 42     implementation 'com.google.android.material:material:1.5.0'
 43     implementation 'com.google.android.gms:play-services-maps:17.0.1'
 44     implementation 'androidx.constraintlayout:constraintlayout:2.1.3'
 45     implementation 'com.google.firebase:firebase-firestore:24.0.1'
                                 
 46     implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.4.0'
 47     implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.4.0'
 48     implementation 'androidx.navigation:navigation-fragment:2.4.0'
../../build.gradle:46: A newer version of androidx.lifecycle:lifecycle-livedata-ktx than 2.4.0 is available: 2.4.1
 43     implementation 'com.google.android.gms:play-services-maps:17.0.1'
 44     implementation 'androidx.constraintlayout:constraintlayout:2.1.3'
 45     implementation 'com.google.firebase:firebase-firestore:24.0.1'
 46     implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.4.0'
                               
 47     implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.4.0'
 48     implementation 'androidx.navigation:navigation-fragment:2.4.0'
 49     implementation 'androidx.navigation:navigation-ui:2.4.0'
../../build.gradle:47: A newer version of androidx.lifecycle:lifecycle-viewmodel-ktx than 2.4.0 is available: 2.4.1
 44     implementation 'androidx.constraintlayout:constraintlayout:2.1.3'
 45     implementation 'com.google.firebase:firebase-firestore:24.0.1'
 46     implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.4.0'
 47     implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.4.0'
                              
 48     implementation 'androidx.navigation:navigation-fragment:2.4.0'
 49     implementation 'androidx.navigation:navigation-ui:2.4.0'
 50     implementation platform('com.google.firebase:firebase-bom:29.3.0')
../../build.gradle:48: A newer version of androidx.navigation:navigation-fragment than 2.4.0 is available: 2.4.2
 45     implementation 'com.google.firebase:firebase-firestore:24.0.1'
 46     implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.4.0'
 47     implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.4.0'
 48     implementation 'androidx.navigation:navigation-fragment:2.4.0'
                                 
 49     implementation 'androidx.navigation:navigation-ui:2.4.0'
 50     implementation platform('com.google.firebase:firebase-bom:29.3.0')
 51     implementation 'com.google.firebase:firebase-storage'
GradleDependency Correctness Warning Priority 4/10

Extraneous text in resource files

../../src/main/res/layout/list_scanned_users_content.xml:8: Unexpected text found in layout file: "android:layout_margin="10dp""
  4     xmlns:tools="http://schemas.android.com/tools"
  5     android:layout_width="match_parent"
  6     android:layout_height="match_parent">
  7     android:layout_margin="10dp"
                                                                   
  8 
  9     <androidx.cardview.widget.CardView
 10         android:id="@+id/photo_container"
../../src/main/res/layout/user_list_content.xml:21: Unexpected text found in layout file: "android:layout_alignParentLeft="true""
 17         app:cardCornerRadius="30dp"
 18         app:layout_constraintStart_toStartOf="parent"
 19         app:layout_constraintTop_toTopOf="parent">
 20         android:layout_alignParentLeft="true"
                                                      
 21 
 22         <com.google.android.material.imageview.ShapeableImageView
 23             android:id="@+id/user_picture"
ExtraText Correctness Warning Priority 3/10

Using dp instead of sp for text sizes

../../src/main/res/layout/activity_player_info.xml:189: Should use "sp" instead of "dp" for text sizes
 186                 android:layout_marginTop="10dp"
 187                 android:layout_marginBottom="10dp"
 188                 android:text="Scanned QR codes:"
 189                 android:textSize="20dp" />
                                                         
 190         </LinearLayout>
 191 
 192
../../src/main/res/layout/activity_qr_info.xml:34: Should use "sp" instead of "dp" for text sizes
  31             android:layout_height="wrap_content"
  32             android:layout_marginLeft="24dp"
  33             android:text="QR NAME"
  34             android:textSize="20dp"
                                                                
  35             android:textStyle="bold"
  36             app:layout_constraintStart_toStartOf="parent"
  37             app:layout_constraintTop_toTopOf="parent" />
../../src/main/res/layout/activity_qr_info.xml:60: Should use "sp" instead of "dp" for text sizes
  57         android:layout_marginTop="16dp"
  58         android:layout_marginEnd="16dp"
  59         android:text="Score: N/A"
  60         android:textSize="20dp"
                                                                    
  61         android:textStyle="bold"
  62         app:layout_constraintEnd_toEndOf="parent"
  63         app:layout_constraintStart_toStartOf="parent"
../../src/main/res/layout/activity_scanned_users.xml:16: Should use "sp" instead of "dp" for text sizes
 13         android:layout_marginTop="16dp"
 14         android:layout_width="wrap_content"
 15         android:layout_height="wrap_content"
 16         android:textSize="20dp"
                                                                    
 17         android:text="Scanned User List"
 18         android:textStyle="bold"/>
 19     <ListView
../../src/main/res/layout/list_comments_content.xml:40: Should use "sp" instead of "dp" for text sizes
 37             android:layout_width="wrap_content"
 38             android:layout_height="wrap_content"
 39             android:text="User Name"
 40             android:textSize="16dp"
                                                                
 41             android:textStyle="bold" />
 42 
 43         <TextView
../../src/main/res/layout/list_comments_content.xml:48: Should use "sp" instead of "dp" for text sizes
 45           android:layout_width="wrap_content"
 46           android:layout_height="wrap_content"
 47           android:text="Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua."
 48           android:textSize="16dp"
                                                                
 49           app:layout_constraintEnd_toEndOf="parent" />
 50 
 51   </LinearLayout>
SpUsage Correctness Warning Priority 3/10

Compat compound drawable attributes should be used on TextView

../../src/main/res/layout/activity_qr_info.xml:43: Use app:drawableStartCompat instead of android:drawableStart
  40             android:id="@+id/qrLocation"
  41             android:layout_width="match_parent"
  42             android:layout_height="wrap_content"
  43             android:drawableStart="@drawable/baseline_place_24"
                                    
  44             android:drawablePadding="0dp"
  45             android:text="NO LOCATION DATA"
  46             android:textSize="14sp"
../../src/main/res/layout/player_profile_activity.xml:93: Use app:drawableStartCompat instead of android:drawableStart
  90         android:layout_marginStart="32dp"
  91         android:layout_marginEnd="32dp"
  92         android:clickable="true"
  93         android:drawableStart="@drawable/round_qr_code_scanner_24"
                                 
  94         android:drawablePadding="10dp"
  95         android:onClick="generateLoginQR"
  96         android:padding="10dp"
../../src/main/res/layout/player_profile_activity.xml:112: Use app:drawableStartCompat instead of android:drawableStart
 109         android:layout_marginTop="88dp"
 110         android:layout_marginEnd="32dp"
 111         android:clickable="true"
 112         android:drawableStart="@drawable/round_qr_code_scanner_24"
                                 
 113         android:drawablePadding="10dp"
 114         android:onClick="generateStatusQR"
 115         android:padding="10dp"
Vendor: Android Open Source Project (appcompat-1.4.1)
Identifier: appcompat-1.4.1
Feedback: https://issuetracker.google.com/issues/new?component=192731
UseCompatTextViewDrawableXml Correctness Warning Priority 1/10

Obsolete layout params

../../src/main/res/layout/activity_search.xml:20: Invalid layout param in a RelativeLayout: layout_weight
  17             android:id="@+id/sort_spinner"
  18             android:layout_width="wrap_content"
  19             android:layout_height="wrap_content"
  20             android:layout_weight="1"
                                                              
  21             android:layout_alignParentRight="true"
  22             android:layout_gravity="bottom"
  23             android:background="@null"/>
ObsoleteLayoutParam Performance Warning Priority 6/10

Obsolete SDK_INT Version Check

../../src/main/res/drawable-v24: This folder configuration (v24) is unnecessary; minSdkVersion is 26. Merge all the resources in this folder into drawable.
../../src/main/res/mipmap-anydpi-v26: This folder configuration (v26) is unnecessary; minSdkVersion is 26. Merge all the resources in this folder into mipmap-anydpi.
ObsoleteSdkInt Performance Warning Priority 6/10

Static Field Leaks

../../src/main/java/com/example/qr_go/activities/MapsActivity.java:52: Do not place Android context classes in static fields (static reference to FirebaseFirestore which has field context pointing to Context); this is a memory leak
  49     private GoogleMap mMap;
  50     private static String currentUUID; // userId singleton
  51     private static String userPassword; // password singleton
  52     public static FirebaseFirestore db; // database singleton                                       
  53     public static FirebaseStorage storage;
  54     private static SharedPreferences sharedPrefs;
  55     protected LocationManager locationManager;
../../src/main/java/com/example/qr_go/activities/PlayerProfileActivity.java:51: Do not place Android context classes in static fields (static reference to FirebaseFirestore which has field context pointing to Context); this is a memory leak
  48 @RequiresApi(api = Build.VERSION_CODES.O)
  49 public class PlayerProfileActivity extends BaseActivity {
  50     public StringUtil stringUtil = new StringUtil();
  51     public static FirebaseFirestore db;                                                             
  52     private Player currentUser = new Player();
  53     private String currentUserId;
  54     public static final int GET_FROM_GALLERY = 3;
../../src/main/java/com/example/qr_go/activities/SearchActivity.java:77: Do not place Android context classes in static fields; this is a memory leak
  74     private static ArrayList<QRListDisplayContainer> qrDisplays;
  75 
  76     // The search bar
  77     private static EditText searchBar;                                                              
  78 
  79     // The qr search spinner
  80     private static Spinner qrSearchSpinner;
../../src/main/java/com/example/qr_go/activities/SearchActivity.java:80: Do not place Android context classes in static fields; this is a memory leak
  77     private static EditText searchBar;
  78 
  79     // The qr search spinner
  80     private static Spinner qrSearchSpinner;                                                         
  81     // The qr search spinner's adapter
  82     private QRSearchSpinnerAdapter qrSearchSpinnerAdapter;
  83     // String array holding qr search options
StaticFieldLeak Performance Warning Priority 6/10

FrameLayout can be replaced with <merge> tag

../../src/main/res/layout/activity_code_scanner.xml:2: This <FrameLayout> can be replaced with a <merge> tag
  1 <?xml version="1.0" encoding="utf-8"?>
  2 <FrameLayout
                                                                                       
  3     xmlns:android="http://schemas.android.com/apk/res/android"
  4     xmlns:app="http://schemas.android.com/apk/res-auto"
  5     android:layout_width="match_parent"
MergeRootFrame Performance Warning Priority 4/10

Should use valueOf instead of new

../../src/main/java/com/example/qr_go/fragments/UserSearchFragment.java:84: Use Integer.valueOf(rank) instead
  81         int rank = 1;
  82         int userPos = 0;
  83         for (UserListDisplayContainer user : userDisplays) {
  84             user.setRankPosition(new Integer(rank));                                                
  85             if (user.getIsCurrentUser()) {
  86                 userPos = rank-1;
  87             }
UseValueOf Performance Warning Priority 4/10

Missing baselineAligned attribute

../../src/main/res/layout/activity_player_info.xml:131: Set android:baselineAligned="false" on this element for better performance
 128 
 129         </LinearLayout>
 130 
 131         <LinearLayout
                                                                              
 132             android:layout_width="match_parent"
 133             android:layout_height="wrap_content"
 134             android:orientation="horizontal"
DisableBaselineAlignment Performance Warning Priority 3/10

Unused resources

../../src/main/res/layout/activity_my_qr_codes.xml:3: The resource R.layout.activity_my_qr_codes appears to be unused
   1 <?xml version="1.0" encoding="utf-8"?>
   2 <!-- CODE IS DEPRECIATED IN FAVOR OF activity_player_info.xml -->
   3 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"

   4     xmlns:app="http://schemas.android.com/apk/res-auto"
   5     android:id="@+id/container"
   6     android:layout_width="match_parent"
../../src/main/res/values/colors.xml:10: The resource R.color.gray appears to be unused
  7     <color name="teal_700">#FF018786</color>
  8     <color name="black">#FF000000</color>
  9     <color name="white">#FFFFFFFF</color>
 10     <color name="gray">#F0F0F0</color>
                                                             
 11 </resources>
../../src/main/res/drawable/ic_baseline_chevron_left_24.xml:1: The resource R.drawable.ic_baseline_chevron_left_24 appears to be unused
  1 <vector xmlns:android="http://schemas.android.com/apk/res/android"
                                 
  2     android:width="24dp"
  3     android:height="24dp"
  4     android:viewportWidth="24"
../../src/main/res/drawable/sample_prof_pic.xml:2: The resource R.drawable.sample_prof_pic appears to be unused
 1 <?xml version="1.0" encoding="utf-8"?>
 2 <selector xmlns:android="http://schemas.android.com/apk/res/android">
                              
 3 
 4 </selector>
../../src/main/res/values/strings.xml:3: The resource R.string.title_activity_maps appears to be unused
 1 <resources>
 2     <string name="app_name">QR Go</string>
 3     <string name="title_activity_maps">MapsActivity</string>
                                       
 4 </resources>
UnusedResources Performance Warning Priority 3/10

Redundant namespace

../../src/main/res/layout/activity_maps.xml:20: This namespace declaration is redundant
 17         app:layout_constraintRight_toRightOf="parent"
 18         app:menu="@menu/bottom_nav_menu" />
 19 
 20     <fragment xmlns:android="http://schemas.android.com/apk/res/android"
                           
 21         xmlns:map="http://schemas.android.com/apk/res-auto"
 22         xmlns:tools="http://schemas.android.com/tools"
 23         android:id="@+id/map"
../../src/main/res/layout/activity_search.xml:89: This namespace declaration is redundant
  86         android:layout_margin="0dp"
  87         android:orientation="vertical">
  88         <androidx.viewpager2.widget.ViewPager2
  89             xmlns:android="http://schemas.android.com/apk/res/android"
                             
  90             android:id="@+id/search_pager"
  91             android:layout_width="match_parent"
  92             android:layout_height="0dp"
RedundantNamespace Performance Warning Priority 1/10

Missing inputType

../../src/main/res/layout/player_profile_activity.xml:38: The view name (@+id/player_email) suggests this is an e-mail address, but it does not include 'textEmail' in the inputType
  35         android:drawableStart="@android:drawable/sym_action_email"
  36         android:drawablePadding="10dp"
  37         android:hint="Email"
  38         android:inputType="textPersonName"
                                                         
  39         app:layout_constraintEnd_toEndOf="parent"
  40         app:layout_constraintHorizontal_bias="0.0"
  41         app:layout_constraintStart_toStartOf="parent"
    ../../src/main/res/layout/player_profile_activity.xml:29: id defined here
      26 
  27 
  28     <EditText
  29         android:id="@+id/player_email"
                                                             
  30         android:layout_width="match_parent"
  31         android:layout_height="wrap_content"
  32         android:layout_marginStart="40dp"
TextFields Usability Warning Priority 5/10

Use Autofill

../../src/main/res/layout/activity_qr_info.xml:121: Missing autofillHints attribute
 118         app:layout_constraintBottom_toTopOf="@id/bottom_nav_view"
 119         app:layout_constraintEnd_toEndOf="parent" />
 120 
 121     <EditText
                                                                                      
 122         android:id="@+id/inputComment"
 123         android:layout_width="0dp"
 124         android:layout_height="wrap_content"
../../src/main/res/layout/activity_search.xml:32: Missing autofillHints attribute
  29         android:layout_height="45dp"
  30         android:layout_marginTop="0dp"
  31         android:layout_marginHorizontal="15dp">
  32         <EditText
                                                                                  
  33             android:id="@+id/search_bar"
  34             android:layout_width="match_parent"
  35             android:layout_height="match_parent"
../../src/main/res/layout/player_profile_activity.xml:28: Missing autofillHints attribute
  25     </androidx.cardview.widget.CardView>
  26 
  27 
  28     <EditText
                                                                                      
  29         android:id="@+id/player_email"
  30         android:layout_width="match_parent"
  31         android:layout_height="wrap_content"
../../src/main/res/layout/player_profile_activity.xml:44: Missing autofillHints attribute
  41         app:layout_constraintStart_toStartOf="parent"
  42         app:layout_constraintTop_toBottomOf="@+id/player_username" />
  43 
  44     <EditText
                                                                                      
  45         android:id="@+id/player_username"
  46         android:layout_width="match_parent"
  47         android:layout_height="wrap_content"
Autofill Usability Warning Priority 3/10

Image without contentDescription

../../src/main/res/layout/activity_new_game_qr_activity.xml:81: Missing contentDescription attribute on image
  78         app:layout_constraintHorizontal_bias="0.497"
  79         app:layout_constraintStart_toStartOf="parent" />
  80 
  81     <ImageView
                                                                                     
  82         android:id="@+id/take_qr_photo_imageview"
  83         android:layout_width="170dp"
  84         android:layout_height="170dp"
../../src/main/res/layout/activity_player_info.xml:35: Missing contentDescription attribute on image
  32                 app:layout_constraintStart_toStartOf="parent"
  33                 app:layout_constraintTop_toTopOf="parent">
  34 
  35                 <ImageView
                                                                         
  36                     android:id="@+id/profile_photo"
  37                     android:layout_width="match_parent"
  38                     android:layout_height="match_parent"
../../src/main/res/layout/activity_qr_info.xml:8: Missing contentDescription attribute on image
   5     android:layout_width="match_parent"
   6     android:layout_height="match_parent">
   7 
   8     <ImageView
                                                                                     
   9         android:id="@+id/profile_photo"
  10         android:layout_width="120dp"
  11         android:layout_height="120dp"
../../src/main/res/layout/fragment_show_qr_code.xml:8: Missing contentDescription attribute on image
  5     android:layout_width="match_parent"
  6     android:layout_height="match_parent">
  7 
  8     <ImageView
                                                                                     
  9         android:id="@+id/qr_code_image"
 10         android:layout_width="wrap_content"
 11         android:layout_height="wrap_content"
../../src/main/res/layout/list_comments_content.xml:18: Missing contentDescription attribute on image
 15         app:layout_constraintStart_toStartOf="parent"
 16         app:layout_constraintTop_toTopOf="parent">
 17 
 18         <ImageView
                                                                                 
 19             android:id="@+id/commenterPhoto"
 20             android:layout_width="match_parent"
 21             android:layout_height="match_parent"
../../src/main/res/layout/player_profile_activity.xml:20: Missing contentDescription attribute on image
  17         app:layout_constraintStart_toStartOf="parent"
  18         app:layout_constraintTop_toTopOf="parent">
  19 
  20         <ImageView
                                                                                 
  21             android:id="@+id/profile_photo"
  22             android:layout_width="match_parent"
  23             android:layout_height="match_parent"
ContentDescription Accessibility Warning Priority 3/10

TextView Internationalization

../../src/main/java/com/example/qr_go/activities/MyQRCodesActivity.java:115: Number formatting does not take into account locale settings. Consider using String.format instead.
 112       qrDisplays.add(qrToDisplay);
 113   }
 114   playernameText.setText(selectedPlayer.getUsername());
 115   highestScoreText.setText(Integer.toString(selectedPlayer.getHighestUniqueScore()));
 116   lowestScoreText.setText(Integer.toString(selectedPlayer.getLowestUniqueScore()));
 117   qrNumText.setText(Integer.toString(selectedPlayer.getScannedQRCodeIds().size()));
 118   totalScoreText.setText(Integer.toString(selectedPlayer.getTotalScore()));
../../src/main/java/com/example/qr_go/activities/MyQRCodesActivity.java:116: Number formatting does not take into account locale settings. Consider using String.format instead.
 113   }
 114   playernameText.setText(selectedPlayer.getUsername());
 115   highestScoreText.setText(Integer.toString(selectedPlayer.getHighestUniqueScore()));
 116   lowestScoreText.setText(Integer.toString(selectedPlayer.getLowestUniqueScore()));
 117   qrNumText.setText(Integer.toString(selectedPlayer.getScannedQRCodeIds().size()));
 118   totalScoreText.setText(Integer.toString(selectedPlayer.getTotalScore()));
 119   highestQRCode = selectedPlayer.getHighestQRCode();
../../src/main/java/com/example/qr_go/activities/MyQRCodesActivity.java:117: Number formatting does not take into account locale settings. Consider using String.format instead.
 114   playernameText.setText(selectedPlayer.getUsername());
 115   highestScoreText.setText(Integer.toString(selectedPlayer.getHighestUniqueScore()));
 116   lowestScoreText.setText(Integer.toString(selectedPlayer.getLowestUniqueScore()));
 117   qrNumText.setText(Integer.toString(selectedPlayer.getScannedQRCodeIds().size()));
 118   totalScoreText.setText(Integer.toString(selectedPlayer.getTotalScore()));
 119   highestQRCode = selectedPlayer.getHighestQRCode();
 120   highestScoreQrIDText.setText(highestQRCode.getKey().substring(0, 6));
../../src/main/java/com/example/qr_go/activities/MyQRCodesActivity.java:118: Number formatting does not take into account locale settings. Consider using String.format instead.
 115   highestScoreText.setText(Integer.toString(selectedPlayer.getHighestUniqueScore()));
 116   lowestScoreText.setText(Integer.toString(selectedPlayer.getLowestUniqueScore()));
 117   qrNumText.setText(Integer.toString(selectedPlayer.getScannedQRCodeIds().size()));
 118   totalScoreText.setText(Integer.toString(selectedPlayer.getTotalScore()));
 119   highestQRCode = selectedPlayer.getHighestQRCode();
 120   highestScoreQrIDText.setText(highestQRCode.getKey().substring(0, 6));
 121   highestScoreQrScoreText.setText("Score: " + highestQRCode.getValue().toString());
../../src/main/java/com/example/qr_go/activities/MyQRCodesActivity.java:121: Do not concatenate text displayed with setText. Use resource string with placeholders.
 118   totalScoreText.setText(Integer.toString(selectedPlayer.getTotalScore()));
 119   highestQRCode = selectedPlayer.getHighestQRCode();
 120   highestScoreQrIDText.setText(highestQRCode.getKey().substring(0, 6));
 121   highestScoreQrScoreText.setText("Score: " + highestQRCode.getValue().toString());
 122   lowestQRCode = selectedPlayer.getLowestQRCode();
 123   lowestScoreQrIDText.setText(lowestQRCode.getKey().substring(0, 6));
 124   lowestScoreQrScoreText.setText("Score: " + lowestQRCode.getValue().toString());
SetTextI18n Internationalization Warning Priority 6/10

Hardcoded text

../../src/main/res/layout/activity_new_game_qr_activity.xml:19: Hardcoded string "123", should use @string resource
  16         android:layout_width="wrap_content"
  17         android:layout_height="wrap_content"
  18         android:layout_marginTop="8dp"
  19         android:text="123"
                                                                         
  20         android:textAlignment="center"
  21         android:textSize="48sp"
  22         android:textStyle="bold"
../../src/main/res/layout/activity_new_game_qr_activity.xml:33: Hardcoded string "Score", should use @string resource
  30         android:layout_width="wrap_content"
  31         android:layout_height="wrap_content"
  32         android:layout_marginTop="64dp"
  33         android:text="Score"
                                                                       
  34         android:textSize="20sp"
  35         app:layout_constraintEnd_toEndOf="parent"
  36         app:layout_constraintStart_toStartOf="parent"
../../src/main/res/layout/activity_new_game_qr_activity.xml:46: Hardcoded string "Save", should use @string resource
  43         android:layout_marginBottom="124dp"
  44         android:backgroundTint="@color/purple_500"
  45         android:onClick="saveNewQRCode"
  46         android:text="Save"
                                                                        
  47         android:textColor="@color/white"
  48         app:layout_constraintBottom_toBottomOf="parent"
  49         app:layout_constraintEnd_toEndOf="parent"
../../src/main/res/layout/activity_new_game_qr_activity.xml:59: Hardcoded string "Save location", should use @string resource
  56         android:layout_height="wrap_content"
  57         android:layout_marginBottom="48dp"
  58         android:checked="true"
  59         android:text="Save location"
                                                               
  60         android:textSize="16sp"
  61         app:layout_constraintBottom_toTopOf="@+id/save_game_qr"
  62         app:layout_constraintEnd_toEndOf="parent"
../../src/main/res/layout/activity_new_game_qr_activity.xml:74: Hardcoded string "Take photo of object", should use @string resource
  71         android:drawableStart="@android:drawable/ic_menu_gallery"
  72         android:drawablePadding="10dp"
  73         android:onClick="launchTakePhoto"
  74         android:text="Take photo of object"
                                                        
  75         android:textColor="#000000"
  76         app:layout_constraintBottom_toTopOf="@+id/location_checkbox"
  77         app:layout_constraintEnd_toEndOf="parent"
HardcodedText Internationalization Warning Priority 5/10

Padding and margin symmetry

../../src/main/res/layout/activity_player_info.xml:74: When you define paddingRight you should probably also define paddingLeft for right-to-left symmetry
  71                     android:layout_height="wrap_content"
  72                     android:orientation="horizontal">
  73                     <LinearLayout
  74                         android:paddingRight="16dp"
                                                
  75                         android:layout_width="match_parent"
  76                         android:layout_height="wrap_content"
  77                         android:orientation="vertical">
../../src/main/res/layout/list_scanned_users_content.xml:15: When you define paddingRight you should probably also define paddingLeft for right-to-left symmetry
 12         android:layout_height="50dp"
 13         android:layout_alignParentTop="false"
 14         android:layout_centerVertical="true"
 15         android:paddingRight="10dp"
                                                                
 16         app:cardCornerRadius="30dp"
 17         app:layout_constraintStart_toStartOf="parent"
 18         app:layout_constraintTop_toTopOf="parent">
../../src/main/res/layout/qr_list_content.xml:16: When you define paddingRight you should probably also define paddingLeft for right-to-left symmetry
 13         android:layout_height="50dp"
 14         android:layout_alignParentLeft="true"
 15         android:layout_centerVertical="true"
 16         android:paddingRight="10dp"
                                                                
 17         android:src="@drawable/round_qr_code_scanner_24" />
 18 
 19     <LinearLayout
../../src/main/res/layout/qr_search_spinner_item.xml:14: When you define paddingRight you should probably also define paddingLeft for right-to-left symmetry
 11         android:layout_height="35dp"
 12         android:layout_width="35dp"
 13         app:tint="?colorPrimary"
 14         android:paddingRight="10dp"
                                                                
 15         android:src="@drawable/ic_baseline_public_24"
 16         android:layout_centerVertical="true" />
 17
../../src/main/res/layout/user_list_content.xml:16: When you define paddingRight you should probably also define paddingLeft for right-to-left symmetry
 13         android:layout_height="50dp"
 14         android:layout_alignParentTop="false"
 15         android:layout_centerVertical="true"
 16         android:paddingRight="10dp"
                                                                
 17         app:cardCornerRadius="30dp"
 18         app:layout_constraintStart_toStartOf="parent"
 19         app:layout_constraintTop_toTopOf="parent">
../../src/main/res/layout/user_list_content.xml:79: When you define paddingRight you should probably also define paddingLeft for right-to-left symmetry
 76         android:layout_height="wrap_content"
 77         android:layout_alignParentRight="true"
 78         android:layout_centerVertical="true"
 79         android:paddingRight="0dp"
                                                                 
 80         android:visibility="gone"
 81         app:icon="@drawable/ic_baseline_delete_24"
 82         app:iconSize="30dp" />
../../src/main/res/layout/user_qr_list_content.xml:16: When you define paddingRight you should probably also define paddingLeft for right-to-left symmetry
 13         android:layout_height="50dp"
 14         android:layout_alignParentLeft="true"
 15         android:layout_centerVertical="true"
 16         android:paddingRight="10dp"
                                                                
 17         android:src="@drawable/round_qr_code_scanner_24" />
 18 
 19     <LinearLayout
RtlSymmetry Bidirectional Text Internationalization Warning Priority 6/10

Using left/right instead of start/end attributes

../../src/main/res/layout/activity_player_info.xml:30: Consider replacing android:layout_marginLeft with android:layout_marginStart="50dp" to better support right-to-left layouts
  27                 android:layout_width="100dp"
  28                 android:layout_height="100dp"
  29                 app:cardCornerRadius="60dp"
  30                 android:layout_marginLeft="50dp"
                                                   
  31                 app:layout_constraintEnd_toEndOf="parent"
  32                 app:layout_constraintStart_toStartOf="parent"
  33                 app:layout_constraintTop_toTopOf="parent">
../../src/main/res/layout/activity_player_info.xml:47: Consider replacing android:layout_marginLeft with android:layout_marginStart="50dp" to better support right-to-left layouts
  44             <LinearLayout
  45                 android:layout_width="200dp"
  46                 android:layout_height="128dp"
  47                 android:layout_marginLeft="50dp"
                                                   
  48                 android:orientation="vertical">
  49 
  50                 <TextView
../../src/main/res/layout/activity_player_info.xml:74: Consider replacing android:paddingRight with android:paddingEnd="16dp" to better support right-to-left layouts
  71                     android:layout_height="wrap_content"
  72                     android:orientation="horizontal">
  73                     <LinearLayout
  74                         android:paddingRight="16dp"
                                                
  75                         android:layout_width="match_parent"
  76                         android:layout_height="wrap_content"
  77                         android:orientation="vertical">
../../src/main/res/layout/activity_qr_info.xml:32: Consider replacing android:layout_marginLeft with android:layout_marginStart="24dp" to better support right-to-left layouts
  29             android:id="@+id/qrName"
  30             android:layout_width="wrap_content"
  31             android:layout_height="wrap_content"
  32             android:layout_marginLeft="24dp"
                                                       
  33             android:text="QR NAME"
  34             android:textSize="20dp"
  35             android:textStyle="bold"
../../src/main/res/layout/activity_search.xml:21: Consider replacing android:layout_alignParentRight with android:layout_alignParentEnd="true" to better support right-to-left layouts
  18             android:layout_width="wrap_content"
  19             android:layout_height="wrap_content"
  20             android:layout_weight="1"
  21             android:layout_alignParentRight="true"
                                                 
  22             android:layout_gravity="bottom"
  23             android:background="@null"/>
  24
RtlHardcoded Bidirectional Text Internationalization Warning Priority 5/10

@Ignore without Reason

../../src/test/java/com/example/qr_go/objects/LoginQRCodeTest.java:18: Test is ignored without giving any explanation
 15     private String mockUserId = "user-id";
 16     private String mockPassword = "password";
 17 
 18     @Ignore // need to mock firestore                                                               
 19     @Test
 20     public void testIsLoginValid() {
IgnoreWithoutReason Testing Warning Priority 2/10

Disabled Checks

One or more issues were not run by lint, either because the check is not enabled by default, or because it was disabled with a command line flag or via one or more lint.xml configuration files in the project directories.

Suppressing Warnings and Errors

Lint errors can be suppressed in a variety of ways:

1. With a @SuppressLint annotation in the Java code
2. With a tools:ignore attribute in the XML file
3. With a //noinspection comment in the source code
4. With ignore flags specified in the build.gradle file, as explained below
5. With a lint.xml configuration file in the project
6. With a lint.xml configuration file passed to lint via the --config flag
7. With the --ignore flag passed to lint.

To suppress a lint warning with an annotation, add a @SuppressLint("id") annotation on the class, method or variable declaration closest to the warning instance you want to disable. The id can be one or more issue id's, such as "UnusedResources" or {"UnusedResources","UnusedIds"}, or it can be "all" to suppress all lint warnings in the given scope.

To suppress a lint warning with a comment, add a //noinspection id comment on the line before the statement with the error.

To suppress a lint warning in an XML file, add a tools:ignore="id" attribute on the element containing the error, or one of its surrounding elements. You also need to define the namespace for the tools prefix on the root element in your document, next to the xmlns:android declaration:
xmlns:tools="http://schemas.android.com/tools"

To suppress a lint warning in a build.gradle file, add a section like this:
android {
    lintOptions {
        disable 'TypographyFractions','TypographyQuotes'
    }
}

Here we specify a comma separated list of issue id's after the disable command. You can also use warning or error instead of disable to change the severity of issues.

To suppress lint warnings with a configuration XML file, create a file named lint.xml and place it at the root directory of the module in which it applies.

The format of the lint.xml file is something like the following:
<?xml version="1.0" encoding="UTF-8"?>
<lint>
    <!-- Ignore everything in the test source set -->
    <issue id="all">
        <ignore path="\*/test/\*" />
    </issue>

    <!-- Disable this given check in this project -->
    <issue id="IconMissingDensityFolder" severity="ignore" />

    <!-- Ignore the ObsoleteLayoutParam issue in the given files -->
    <issue id="ObsoleteLayoutParam">
        <ignore path="res/layout/activation.xml" />
        <ignore path="res/layout-xlarge/activation.xml" />
        <ignore regexp="(foo|bar)\.java" />
    </issue>

    <!-- Ignore the UselessLeaf issue in the given file -->
    <issue id="UselessLeaf">
        <ignore path="res/layout/main.xml" />
    </issue>

    <!-- Change the severity of hardcoded strings to "error" -->
    <issue id="HardcodedText" severity="error" />
</lint>

To suppress lint checks from the command line, pass the --ignore flag with a comma separated list of ids to be suppressed, such as:
$ lint --ignore UnusedResources,UselessLeaf /my/project/path

For more information, see https://developer.android.com/studio/write/lint.html#config