Replace android:tint with app:tint for ImageViews

app/src/main/res/layout/activity_location_picker.xml

@@ -108,7 +108,7 @@
             android:paddingBottom="@dimen/keyline_first"
             android:contentDescription="@string/pick_this_location"
             android:src="@drawable/ic_outline_place_24px"
-            android:tint="@color/icon_tint"/>
+            app:tint="@color/icon_tint"/>
 
           <androidx.core.widget.ContentLoadingProgressBar
             android:id="@+id/loading_indicator"
@@ -183,7 +183,7 @@
           android:layout_gravity="start|center_vertical"
           android:contentDescription="@android:string/search_go"
           android:src="@drawable/ic_outline_search_24px"
-          android:tint="@color/icon_tint"/>
+          app:tint="@color/icon_tint"/>
 
         <TextView
           android:layout_width="match_parent"

app/src/main/res/layout/astrid_calendar_reminder_view.xml

@@ -7,6 +7,7 @@
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
   android:layout_width="match_parent"
   android:layout_height="wrap_content"
+  xmlns:app="http://schemas.android.com/apk/res-auto"
   android:layout_marginStart="10dip"
   android:layout_marginEnd="10dip"
   android:background="@drawable/reminder_dialog_background"
@@ -36,7 +37,7 @@
       android:layout_height="25dip"
       android:scaleType="fitCenter"
       android:src="@drawable/ic_outline_clear_24px"
-      android:tint="@android:color/white"/>
+      app:tint="@android:color/white"/>
 
   </LinearLayout>
 
@@ -129,7 +130,7 @@
       android:background="@android:color/transparent"
       android:scaleType="fitCenter"
       android:src="@drawable/ic_outline_settings_24px"
-      android:tint="@android:color/white"/>
+      app:tint="@android:color/white"/>
   </RelativeLayout>
 
 

app/src/main/res/layout/control_set_clear_button.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <ImageView xmlns:android="http://schemas.android.com/apk/res/android"
+  xmlns:app="http://schemas.android.com/apk/res-auto"
   android:id="@+id/clear"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
@@ -9,4 +10,4 @@
   android:alpha="@dimen/alpha_secondary"
   android:background="?attr/selectableItemBackgroundBorderless"
   android:src="@drawable/ic_outline_clear_24px"
-  android:tint="@color/icon_tint"/>
+  app:tint="@color/icon_tint" />

app/src/main/res/layout/control_set_template.xml

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
   xmlns:tools="http://schemas.android.com/tools"
+  xmlns:app="http://schemas.android.com/apk/res-auto"
   android:id="@+id/content"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
@@ -20,7 +21,7 @@
     android:paddingEnd="@dimen/keyline_second"
     android:alpha="@dimen/alpha_secondary"
     android:scaleType="center"
-    android:tint="@color/icon_tint"
+    app:tint="@color/icon_tint"
     tools:ignore="ContentDescription"/>
 
 </LinearLayout>

app/src/main/res/layout/control_set_timers.xml

@@ -6,6 +6,7 @@
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
+  xmlns:app="http://schemas.android.com/apk/res-auto"
   android:baselineAligned="false"
   android:orientation="horizontal">
 
@@ -43,7 +44,7 @@
       android:alpha="@dimen/alpha_secondary"
       android:gravity="center_vertical|center_horizontal"
       android:scaleType="centerInside"
-      android:tint="@color/icon_tint"/>
+      app:tint="@color/icon_tint"/>
 
     <Chronometer
       android:id="@+id/timer"

app/src/main/res/layout/custom_filter_row.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+  xmlns:app="http://schemas.android.com/apk/res-auto"
   android:layout_width="match_parent"
   android:layout_height="wrap_content"
   android:background="@color/window_background">
@@ -30,7 +31,7 @@
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:layout_alignParentStart="true"
-          android:tint="@color/icon_tint_with_alpha"
+          app:tint="@color/icon_tint_with_alpha"
           android:padding="@dimen/keyline_first"
           android:src="@drawable/ic_outline_add_24px"
           android:scaleType="center" />

app/src/main/res/layout/filter_adapter_action.xml

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
   xmlns:tools="http://schemas.android.com/tools"
+  xmlns:app="http://schemas.android.com/apk/res-auto"
   android:id="@+id/row"
   android:background="@drawable/drawer_background_selector"
   android:foreground="?attr/selectableItemBackground"
@@ -14,7 +15,7 @@
   <ImageView
     android:id="@+id/icon"
     android:src="@drawable/ic_outline_add_24px"
-    android:tint="@color/text_primary"
+    app:tint="@color/text_primary"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android:layout_alignParentStart="true"

app/src/main/res/layout/filter_adapter_subheader.xml

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
   xmlns:tools="http://schemas.android.com/tools"
+  xmlns:app="http://schemas.android.com/apk/res-auto"
   android:layout_width="match_parent"
   android:clickable="true"
   android:id="@+id/subheader_row"
@@ -31,7 +32,7 @@
       android:focusable="true"
       android:scaleType="center"
       android:src="@drawable/ic_outline_sync_problem_24px"
-      android:tint="@color/overdue"
+      app:tint="@color/overdue"
       android:visibility="gone" />
 
     <TextView

app/src/main/res/layout/fragment_comment_bar.xml

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
   xmlns:tools="http://schemas.android.com/tools"
+  xmlns:app="http://schemas.android.com/apk/res-auto"
   android:id="@+id/updatesFooter"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
@@ -51,7 +52,7 @@
     android:layout_marginStart="3dp"
     android:scaleType="center"
     android:src="@drawable/ic_outline_add_24px"
-    android:tint="?attr/colorOnPrimary"
+    app:tint="?attr/colorOnPrimary"
     android:visibility="gone"/>
 
 </LinearLayout>

app/src/main/res/layout/location_row.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+  xmlns:app="http://schemas.android.com/apk/res-auto"
   android:layout_width="match_parent"
   android:layout_height="wrap_content"
   android:baselineAligned="false">
@@ -13,7 +14,7 @@
     android:alpha="@dimen/alpha_secondary"
     android:background="?attr/selectableItemBackgroundBorderless"
     android:src="@drawable/ic_outline_notifications_off_24px"
-    android:tint="@color/icon_tint"
+    app:tint="@color/icon_tint"
     android:visibility="gone"/>
 
   <TextView

app/src/main/res/layout/preference_draggable_row.xml

@@ -25,5 +25,5 @@
     android:layout_gravity="center_vertical|end"
     android:scaleType="center"
     android:src="@drawable/ic_outline_drag_handle_24px"
-    android:tint="@color/icon_tint"/>
+    app:tint="@color/icon_tint"/>
 </com.google.android.material.card.MaterialCardView>

app/src/main/res/layout/row_place.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+  xmlns:app="http://schemas.android.com/apk/res-auto"
   android:layout_width="match_parent"
   android:layout_height="wrap_content"
   android:paddingTop="16dp"
@@ -16,7 +17,7 @@
     android:paddingStart="@dimen/keyline_first"
     android:paddingEnd="@dimen/keyline_second"
     android:src="@drawable/ic_outline_place_24px"
-    android:tint="@color/icon_tint"/>
+    app:tint="@color/icon_tint"/>
 
   <ImageView
     android:contentDescription="@string/place_settings"
@@ -27,7 +28,7 @@
     android:paddingStart="@dimen/keyline_first"
     android:paddingEnd="@dimen/keyline_first"
     android:src="@drawable/ic_outline_edit_24px"
-    android:tint="@color/icon_tint" />
+    app:tint="@color/icon_tint" />
 
   <TextView
     android:id="@+id/name"

app/src/main/res/layout/row_place_footer.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+  xmlns:app="http://schemas.android.com/apk/res-auto"
   android:layout_width="match_parent"
   android:layout_height="wrap_content"
   android:orientation="vertical">
@@ -16,7 +17,7 @@
     android:paddingBottom="@dimen/keyline_first"
     android:paddingStart="@dimen/keyline_content_inset"
     android:paddingEnd="@dimen/keyline_second"
-    android:tint="@color/icon_tint_with_alpha"
+    app:tint="@color/icon_tint_with_alpha"
     android:src="@drawable/mapbox_logo_icon"/>
 
 </LinearLayout>

app/src/main/res/layout/simple_list_item_2_themed.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <TwoLineListItem xmlns:android="http://schemas.android.com/apk/res/android"
+  xmlns:app="http://schemas.android.com/apk/res-auto"
   android:layout_width="match_parent"
   android:layout_height="wrap_content"
   android:gravity="center_vertical"
@@ -16,7 +17,7 @@
     android:layout_height="48dp"
     android:layout_alignParentStart="true"
     android:layout_marginEnd="@dimen/keyline_first"
-    android:tint="@null" />
+    app:tint="@null" />
 
   <TextView
     android:id="@id/text1"

app/src/main/res/layout/task_adapter_row.xml

@@ -52,7 +52,7 @@
           android:paddingEnd="2dp"
           android:paddingStart="0dp"
           android:src="@drawable/ic_outline_visibility_off_24px"
-          android:tint="@color/icon_tint_with_alpha"
+          app:tint="@color/icon_tint_with_alpha"
           android:contentDescription="@string/widget_due_date_hidden" />
 
         <TextView

app/src/main/res/layout/task_list_body_empty.xml

@@ -1,5 +1,6 @@
 <androidx.swiperefreshlayout.widget.SwipeRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android"
   xmlns:tools="http://schemas.android.com/tools"
+  xmlns:app="http://schemas.android.com/apk/res-auto"
   android:id="@+id/swipe_layout_empty"
   style="@style/task_list_container"
   android:layout_width="fill_parent"
@@ -24,7 +25,7 @@
         android:layout_gravity="center"
         android:alpha="@dimen/alpha_disabled"
         android:src="@drawable/ic_outline_inbox_168px"
-        android:tint="@color/icon_tint"/>
+        app:tint="@color/icon_tint"/>
 
       <TextView
         android:layout_width="wrap_content"

app/src/main/res/layout/widget_row_dark.xml

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
   xmlns:tools="http://schemas.android.com/tools"
+  xmlns:app="http://schemas.android.com/apk/res-auto"
   android:id="@+id/widget_row"
   android:background="@drawable/widget_ripple_dark"
   android:layout_width="match_parent"
@@ -53,7 +54,7 @@
     android:paddingEnd="2dp"
     android:visibility="gone"
     android:src="@drawable/ic_outline_visibility_off_24px"
-    android:tint="@color/icon_tint_dark_alpha"
+    app:tint="@color/icon_tint_dark_alpha"
     tools:visibility="visible"/>
 
   <TextView
@@ -123,7 +124,7 @@
       android:paddingStart="5dp"
       android:paddingEnd="0dp"
       android:layout_gravity="center_vertical"
-      android:tint="@color/icon_tint_dark_alpha"
+      app:tint="@color/icon_tint_dark_alpha"
       tools:src="@drawable/ic_keyboard_arrow_up_black_18dp" />
 
     <TextView