Android bitmap 字节数组Argb8888 转 yuv420p(I420) java 代码实现
//获取bitmapBitmapb=Bitmap.createBitmap(activity.getWindow().getDecorView().getWidth(),activity.getWindow().getDecorView().getHeight(),Bitmap.Config.ARGB_8888);Canvascanvas=newCanvas(b);activity.getWind