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如何将PictureDrawable对象转换为Bitmap对象?我试过下面的代码,它给出了空指针。如何将PictureDrawable转换为位图
//Convert PictureDrawable to Bitmap
private Bitmap pictureDrawable2Bitmap(PictureDrawable pictureDrawable){
Bitmap bitmap = Bitmap.createBitmap(pictureDrawable.getIntrinsicWidth(),pictureDrawable.getIntrinsicHeight(), Config.ARGB_8888);
Toast.makeText(HTMLActivity.this, "bitmap " + bitmap.toString(), Toast.LENGTH_LONG).show();
Canvas canvas = new Canvas(bitmap);
canvas.drawPicture(pictureDrawable.getPicture());
return bitmap;
}
这里是示例,以显示我在我的代码中做了什么;
private Picture picture;
private String url;
private WebView webview;
private Bitmap HTMLBitmap;
private PictureDrawable HTMLPicDraw;
// goal is to convert WebView --> Picture --> PictureDrawable --> Bitmap
picture = webview.capturePicture();
HTMLPicDraw = new PictureDrawable(picture);
// HTMLPicDraw a PictureDrawable object is good, no null pointer exception here
// what is left is to go from PictureDrawable to Bitmap