add Java APIs needed for WhatsApp MainActivity and ConversationActivity

src/api-impl/android/graphics/BitmapFactory.java

@@ -566,6 +566,10 @@ public class BitmapFactory {
 			}
 
 			setDensityFromOptions(bm, opts);
+			if (bm != null && opts != null) {
+				opts.outWidth = bm.getWidth();
+				opts.outHeight = bm.getHeight();
+			}
 		} finally {
 			Trace.traceEnd(Trace.TRACE_TAG_GRAPHICS);
 		}

src/api-impl/android/graphics/Canvas.java

@@ -399,7 +399,14 @@ public class Canvas {
 		native_drawLine(skia_canvas, widget, startX, startY, stopX, stopY, paint.skia_paint);
 	}
 
-	public void setBitmap(Bitmap bitmap) {}
+	public void setBitmap(Bitmap bitmap) {
+		if (skia_canvas != 0) {
+			native_destroy_canvas(skia_canvas);
+		}
+		bitmap.destroyTexture();  // invalidate cached texture
+		this.skia_canvas = native_canvas_from_bitmap(bitmap.pixbuf);
+		this.widget = 0;
+	}
 
 	public void drawPath(Path path, Paint paint) {
 		native_drawPath(skia_canvas, path.mNativePath, paint.skia_paint);
@@ -445,6 +452,20 @@ public class Canvas {
 
 	public void drawColor(int dummy) {}
 
+	public void drawARGB(int a, int r, int g, int b) {}
+
+	public int saveLayer(RectF bounds, Paint paint, int flags) {
+		return save();
+	}
+
+	public void drawOval(RectF oval, Paint paint) {}
+
+	public boolean clipRect(int left, int top, int right, int bottom) {
+		return false;
+	}
+
+	public void drawColor(int color, PorterDuff.Mode mode) {}
+
 	private static native long native_canvas_from_bitmap(long pixbuf);
 
 	private static native void native_save(long skia_canvas, long widget);

src/api-impl/android/graphics/Path.java

@@ -423,6 +423,10 @@ public class Path {
 		native_arcTo(mNativePath, oval, startAngle, sweepAngle, false);
 	}
 
+	public void arcTo(float left, float top, float right, float bottom, float startAngle, float sweepAngle, boolean forceMoveTo) {
+		arcTo(new RectF(left, top, right, bottom), startAngle, sweepAngle, forceMoveTo);
+	}
+
 	/**
 	 * Close the current contour. If the current point is not equal to the
 	 * first point of the contour, a line segment is automatically added.

src/api-impl/android/graphics/drawable/BitmapDrawable.java

@@ -28,6 +28,11 @@ public class BitmapDrawable extends Drawable {
 		this.paintable = bitmap.getTexture();
 	}
 
+	public BitmapDrawable(Bitmap bitmap) {
+		this.bitmap = bitmap;
+		this.paintable = bitmap.getTexture();
+	}
+
 	public Bitmap getBitmap() {
 		return bitmap;
 	}

src/api-impl/android/graphics/drawable/Drawable.java

@@ -14,6 +14,7 @@ import android.content.res.ColorStateList;
 import android.content.res.Resources;
 import android.content.res.XmlResourceParser;
 import android.content.res.Resources.Theme;
+import android.graphics.BitmapFactory;
 import android.graphics.Canvas;
 import android.graphics.Color;
 import android.graphics.ColorFilter;
@@ -54,7 +55,24 @@ public class Drawable {
 	public void setChangingConfigurations(int bitmap) {}
 
 	public ConstantState getConstantState() {
-		return null;
+		return new ConstantState() {
+
+			@Override
+			public Drawable newDrawable(Resources res) {
+				return Drawable.this;
+			}
+
+			@Override
+			public Drawable newDrawable() {
+				return Drawable.this;
+			}
+
+			@Override
+			public int getChangingConfigurations() {
+				return Drawable.this.getChangingConfigurations();
+			}
+			
+		};
 	}
 
 	public static abstract class ConstantState {
@@ -220,12 +238,17 @@ public class Drawable {
 			LayerDrawable drawable = new LayerDrawable();
 			drawable.inflate(resources, parser, attrs);
 			return drawable;
+		} else if ("nine-patch".equals(parser.getName())) {
+			return new NinePatchDrawable(resources, null, null, null, null);
 		}
 		return null;
 	}
 
 	public static Drawable createFromResourceStream(Resources resources, TypedValue value, InputStream is, String file,
 			Object object) {
+		if (!file.endsWith(".9.png")) {
+			return new BitmapDrawable(resources, BitmapFactory.decodeStream(is));
+		}
 		Path path = Paths.get(android.os.Environment.getExternalStorageDirectory().getPath(), file);
 		if (!Files.exists(path)) {
 			try (InputStream inputStream = ClassLoader.getSystemClassLoader().getResourceAsStream(file)) {

src/api-impl/android/graphics/drawable/InsetDrawable.java

@@ -4,14 +4,22 @@ import android.graphics.Rect;
 
 public class InsetDrawable extends Drawable {
 
+	private Drawable drawable;
+
 	public InsetDrawable(Drawable drawable, int insetLeft, int insetTop, int insetRight, int insetBottom) {
 		super();
+		this.drawable = drawable;
 	}
 
 	public InsetDrawable(Drawable drawable, int inset) {
 		super();
+		this.drawable = drawable;
 	}
 
 	public boolean getPadding(Rect padding) { return false; }
-	
+
+	public Drawable getDrawable() {
+		return drawable;
+	}
+
 }

src/api-impl/android/graphics/drawable/NinePatchDrawable.java

@@ -0,0 +1,10 @@
+package android.graphics.drawable;
+
+import android.content.res.Resources;
+import android.graphics.Bitmap;
+import android.graphics.Rect;
+
+public class NinePatchDrawable extends Drawable {
+
+	public NinePatchDrawable(Resources res, Bitmap bitmap, byte[] data, Rect padding, String name) {}
+}

src/api-impl/android/graphics/drawable/RippleDrawable.java

@@ -2,8 +2,10 @@ package android.graphics.drawable;
 
 import android.content.res.ColorStateList;
 
-public class RippleDrawable extends Drawable {
+public class RippleDrawable extends LayerDrawable {
 
-	public RippleDrawable(ColorStateList colorStateList, Drawable drawable, Drawable drawable2) {}
+	public RippleDrawable(ColorStateList colorStateList, Drawable drawable, Drawable drawable2) {
+		super(new Drawable[] {drawable});
+	}
 
 }

src/api-impl/android/graphics/drawable/ShapeDrawable.java

@@ -1,6 +1,7 @@
 package android.graphics.drawable;
 
 import android.graphics.Paint;
+import android.graphics.Rect;
 import android.graphics.drawable.shapes.Shape;
 
 public class ShapeDrawable extends Drawable {
@@ -8,5 +9,9 @@ public class ShapeDrawable extends Drawable {
 	public ShapeDrawable(Shape shape) {}
 
 	public Paint getPaint() {return new Paint();}
+
+	public void setPadding(Rect padding) {}
+
+	public void setShape(Shape shape) {}
 	
 }