Added option for setting both screens and cropping

android/src/main/java/com/mulgundkar/wallpaper_manager/WallpaperManagerPlugin.java

@@ -9,6 +9,7 @@
 import android.content.res.AssetManager;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
+import android.graphics.Rect;
 import android.os.Build;
 import android.os.Environment;
 
@@ -55,9 +56,15 @@ public void onMethodCall(@NonNull MethodCall call, @NonNull Result result) {
       case "setWallpaperFromFile":
         result.success(setWallpaperFromFile((String) call.argument("filePath"), (int) call.argument("wallpaperLocation")));
         break;
+      case "setWallpaperFromFileWithCrop":
+        result.success(setWallpaperFromFileWithCrop((String)call.argument("filePath"), (int)call.argument("wallpaperLocation"), (int) call.argument("left"), (int) call.argument("top"), (int) call.argument("right"), (int) call.argument("bottom")));
+        break;
       case "setWallpaperFromAsset":
         result.success(setWallpaperFromAsset((String) call.argument("assetPath"), (int) call.argument("wallpaperLocation")));
         break;
+      case "setWallpaperFromAssetWithCrop":
+        result.success(setWallpaperFromAssetWithCrop((String)call.argument("assetPath"), (int)call.argument("wallpaperLocation"), (int) call.argument("left"), (int) call.argument("top"), (int) call.argument("right"), (int) call.argument("bottom")));
+        break;
       default:
         result.notImplemented();
         break;
@@ -87,6 +94,24 @@ private int setWallpaperFromFile(String filePath, int wallpaperLocation){
     return result;
   }
 
+  @SuppressLint("MissingPermission")
+  private int setWallpaperFromFileWithCrop(String filePath, int wallpaperLocation, int left, int top, int right, int bottom) {
+    int result = -1;
+    Bitmap bitmap = BitmapFactory.decodeFile(filePath);
+    WallpaperManager wm = null;
+    if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.ECLAIR) {
+      wm = WallpaperManager.getInstance(context); 
+      if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+        try {
+          result = wm.setBitmap(bitmap, Rect(left, top, right, bottom), false, wallpaperLocation);
+        }catch (IOException e) {
+          e.printStackTrace(); 
+        }
+      }
+    }
+    return result;
+  }
+
   @SuppressLint("MissingPermission")
   private int setWallpaperFromAsset(String assetPath, int wallpaperLocation) {
     InputStream fd = null;
@@ -110,4 +135,28 @@ private int setWallpaperFromAsset(String assetPath, int wallpaperLocation) {
     }
     return result;
   }
+
+  @SuppressLint("MissingPermission")
+  private int setWallpaperFromAssetWithCrop(String assetPath, int wallpaperLocation, int left, int top, int right, int bottom) {
+    InputStream fd = null;
+    int result = -1;
+    try {
+      fd = context.getAssets().open("flutter_assets/" + assetPath);
+      Bitmap bitmap = BitmapFactory.decodeStream(fd);
+      WallpaperManager wm = null; 
+      if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.ECLAIR) {
+        wm = WallpaperManager.getInstance(context);
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+          try {
+            result = wm.setBitmap(bitmap, Rect(left, top, right, bottom), false, wallpaperLocation);
+          }catch (IOException e) {
+            e.printStackTrace(); 
+          }
+        }
+      }
+    }catch (IOException e) {
+      e.printStackTrace();
+    }
+    return result;
+  }
 }

lib/wallpaper_manager.dart

@@ -12,6 +12,9 @@ class WallpaperManager {
 
   /// Static code for Lock Screen Wallpaper Choice
   static const int LOCK_SCREEN = 2;
+
+  // Static code for both Home Screen and Lock Screen Wallpaper Choice
+  static const int BOTH_SCREENS = 3;
 
   static Future<String> get platformVersion async {
     /// String to store the version number before returning. This is just to test working/validity.
@@ -31,6 +34,23 @@ class WallpaperManager {
     /// Function returns the set String as result, use for debugging
     return result > 0 ? "Wallpaper set" : "There was an error.";
   }
+
+  /// Function takes input file's path & location choice
+  static Future<String> setWallpaperFromFileWithCrop(
+      String filePath, int wallpaperLocation, int left, int top, int right, int bottom) async {
+    /// Variable to store operation result
+    final int result = await _channel.invokeMethod('setWallpaperFromFile', {
+      'filePath': filePath,
+      'wallpaperLocation': wallpaperLocation,
+      'left': left,
+      'top': top,
+      'right': right,
+      'bottom': bottom
+    });
+
+    /// Function returns the set String as result, use for debugging
+    return result > 0 ? "Wallpaper set" : "There was an error.";
+  }
 
   /// Function takes input file's asset (Dart/Flutter; pre-indexed in pubspec.yaml) & location choice
   static Future<String> setWallpaperFromAsset(
@@ -42,4 +62,21 @@ class WallpaperManager {
     /// Function returns the set String as result, use for debugging
     return result > 0 ? "Wallpaper set" : "There was an error.";
   }
+
+  /// Function takes input file's asset (Dart/Flutter; pre-indexed in pubspec.yaml) & location choice
+  static Future<String> setWallpaperFromAssetWithCrop(
+      String assetPath, int wallpaperLocation, int left, int top, int right, int bottom) async {
+    /// Variable to store operation result
+    final int result = await _channel.invokeMethod('setWallpaperFromAssetWithCrop', {
+      'assetPath': assetPath,
+      'wallpaperLocation': wallpaperLocation,
+      'left': left,
+      'top': top,
+      'right': right,
+      'bottom': bottom
+    });
+
+    /// Function returns the set String as result, use for debugging
+    return result > 0 ? "Wallpaper set" : "There was an error.";
+  }
 }