在代码中,动态修改图片颜色

在代码中,动态修改图片颜色

public static Bitmap getAlphaBitmap(Bitmap mBitmap,int mColor) {
//          BitmapDrawable mBitmapDrawable = (BitmapDrawable) mContext.getResources().getDrawable(R.drawable.enemy_infantry_ninja);
//          Bitmap mBitmap = mBitmapDrawable.getBitmap();

//BitmapDrawable的getIntrinsicWidth（）方法，Bitmap的getWidth（）方法
//注意这两个方法的区别
//Bitmap mAlphaBitmap = Bitmap.createBitmap(mBitmapDrawable.getIntrinsicWidth(), mBitmapDrawable.getIntrinsicHeight(), Config.ARGB_8888);
Bitmap mAlphaBitmap = Bitmap.createBitmap(mBitmap.getWidth(), mBitmap.getHeight(), Bitmap.Config.ARGB_8888);

Canvas mCanvas = new Canvas(mAlphaBitmap);
Paint mPaint = new Paint();

mPaint.setColor(mColor);
//从原位图中提取只包含alpha的位图
Bitmap alphaBitmap = mBitmap.extractAlpha();
//在画布上（mAlphaBitmap）绘制alpha位图
mCanvas.drawBitmap(alphaBitmap, 0, 0, mPaint);

return mAlphaBitmap;
}