//图片上绘制文字
private Bitmap drawTextToBitmap(Bitmap bitmap, String text, Paint paint,int paddingLeft,int paddingTop){
Bitmap.Config bitmapConfig = bitmap.getConfig();
paint.setDither(true);//获取更清晰的图像采样
paint.setFilterBitmap(true);//过滤一些
if (bitmapConfig == null){
bitmapConfig = Bitmap.Config.ARGB_8888;
}
bitmap = bitmap.copy(bitmapConfig,true);
Canvas canvas = new Canvas(bitmap);
canvas.drawText(text,paddingLeft,paddingTop,paint);
return bitmap;
}
