Down level the min api

build.gradle

@@ -23,7 +23,7 @@ allprojects {
         globalCompileSdkVersion = 29
         globalBuildToolsVersion = "29.0.3"
 
-        globalMinSdkVersion = 19
+        globalMinSdkVersion = 16
         globalTargetSdkVersion = 29
     }
 

twidere/src/main/java/org/mariotaku/twidere/util/DataImportExportUtils.java

@@ -26,6 +26,7 @@ import android.content.Context;
 import android.content.SharedPreferences;
 import android.database.Cursor;
 import android.net.Uri;
+import android.os.Build;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.WorkerThread;
@@ -292,7 +293,15 @@ public class DataImportExportUtils implements Constants {
             @NonNull final String preferencesName, @NonNull final String entryName,
             @NonNull final SharedPreferencesProcessStrategy strategy,
             @NonNull final String data) throws IOException {
-        if (!Objects.equals(entry.getName(), entryName)) return;
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
+            if (!Objects.equals(entry.getName(), entryName)) {
+                return;
+            }
+        } else {
+            if (entry.getName().equals(entryName)) {
+                return;
+            }
+        }
         final JsonParser jsonParser = LoganSquare.JSON_FACTORY.createParser(data);
         if (jsonParser.getCurrentToken() == null) {
             jsonParser.nextToken();
@@ -327,7 +336,15 @@ public class DataImportExportUtils implements Constants {
             @NonNull final String data,
             @NonNull final ContentResolverProcessStrategy<List<T>> strategy)
             throws IOException {
-        if (!Objects.equals(entry.getName(), entryName)) return;
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
+            if (!Objects.equals(entry.getName(), entryName)) {
+                return;
+            }
+        } else {
+            if (entry.getName().equals(entryName)) {
+                return;
+            }
+        }
         List<T> itemsList = JsonSerializer.parseList(data, itemCls);
         strategy.importItem(context.getContentResolver(), itemsList);
     }
@@ -352,7 +369,15 @@ public class DataImportExportUtils implements Constants {
             @NonNull final String data,
             @NonNull final ContentResolverProcessStrategy<T> strategy)
             throws IOException {
-        if (!Objects.equals(entry.getName(), entryName)) return;
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
+            if (!Objects.equals(entry.getName(), entryName)) {
+                return;
+            }
+        } else {
+            if (entry.getName().equals(entryName)) {
+                return;
+            }
+        }
         T item = JsonSerializer.parse(data, itemCls);
         strategy.importItem(context.getContentResolver(), item);
     }

twidere/src/main/kotlin/androidx/core/view/WindowInsetsCompatAccessor.kt

@@ -19,8 +19,12 @@
 
 package androidx.core.view
 
-fun createWindowInsetsCompat(obj: Any) = WindowInsetsCompat(obj)
+import android.annotation.TargetApi
+import android.os.Build
+import android.view.WindowInsets
+
+@TargetApi(Build.VERSION_CODES.KITKAT_WATCH)
+fun createWindowInsetsCompat(obj: Any) = WindowInsetsCompat.toWindowInsetsCompat(obj as WindowInsets)
 
 val WindowInsetsCompat.unwrapped: Any?
-    @Suppress("RestrictedApi")
     get() = this.toWindowInsets()

twidere/src/main/kotlin/org/mariotaku/twidere/util/view/ViewProperties.kt

@@ -19,12 +19,15 @@
 
 package org.mariotaku.twidere.util.view
 
+import android.annotation.TargetApi
+import android.os.Build
 import android.util.FloatProperty
 import android.util.Property
 import android.view.View
 
 object ViewProperties {
-    val TRANSLATION_X_RELATIVE: Property<View, Float> = object : FloatProperty<View>("xRelative") {
+    val TRANSLATION_X_RELATIVE: Property<View, Float> = @TargetApi(Build.VERSION_CODES.N)
+    object : FloatProperty<View>("xRelative") {
         override fun setValue(obj: View, value: Float) {
             obj.translationX = value * obj.width
         }

twidere/src/main/res/values/themes.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<resources xmlns:android="http://schemas.android.com/apk/res/android">
+<resources xmlns:tools="http://schemas.android.com/tools" xmlns:android="http://schemas.android.com/apk/res/android">
 
     <style name="Theme.Twidere" parent="Theme.Twidere.DayNight">
         <item name="darkThemeResource">@style/Theme.Twidere.Dark</item>
@@ -41,7 +41,7 @@
         <!-- Window attributes -->
         <item name="android:windowBackground">@android:color/transparent</item>
         <item name="android:windowIsTranslucent">true</item>
-        <item name="android:windowLayoutInDisplayCutoutMode">shortEdges</item>
+        <item name="android:windowLayoutInDisplayCutoutMode" tools:targetApi="o_mr1">shortEdges</item>
 
         <item name="windowActionBarOverlay">true</item>
         <item name="actionBarStyle">@style/Widget.Twidere.Viewer.ActionBar</item>