Android 创建图像倒影
public void createReflectedImages() {
??int reflectionGap = 4;
??Bitmap originalImage = BitmapFactory.decodeResource(getResources(), R.drawable.qq);
??int width = originalImage.getWidth();
??int height = originalImage.getHeight();
??Matrix matrix = new Matrix();
??matrix.preScale(1, -1);
??
??Bitmap reflectionImage = Bitmap.createBitmap(originalImage, 0, height / 2, width, height / 2, matrix, false);
??Bitmap bitmapWithReflection = Bitmap.createBitmap(width, (height + height / 2 + reflectionGap), Config.ARGB_8888);
??Canvas canvas = new Canvas(bitmapWithReflection);
??
??canvas.drawBitmap(originalImage, 0, 0, null);
??Paint deafaultPaint = new Paint();
??canvas.drawRect(0, height, width, height + reflectionGap, deafaultPaint);
??canvas.drawBitmap(reflectionImage, 0, height + reflectionGap, null);
??Paint paint = new Paint();
??LinearGradient shader = new LinearGradient(0, originalImage.getHeight(), 0, bitmapWithReflection.getHeight() + reflectionGap, 0x70ffffff, 0x00ffffff, TileMode.CLAMP);
??paint.setShader(shader);
??paint.setXfermode(new PorterDuffXfermode(Mode.DST_IN));
??canvas.drawRect(0, height + reflectionGap, width, bitmapWithReflection.getHeight() + reflectionGap, paint);
??imageView.setImageBitmap(bitmapWithReflection);
?}
