LIBGDX PNG屏幕截图无法使用Intent打开文件

Question

我使用以下功能进行屏幕截图：

public static String saveScreenshotNamePath(String name){
    try{
        FileHandle fh;
        fh = Gdx.files.external(name + ".png");
        Pixmap pixmap = getScreenshot(0, 0, Gdx.graphics.getWidth(), Gdx.graphics.getHeight(), false);
        PixmapIO.writePNG(fh, pixmap);
        pixmap.dispose();
        return fh.file().getAbsolutePath();
    }catch (Exception e){
        return "";
    }        
}

public void saveScreenshotFromGame(){
    path_to_saved_google = saveScreenshotNamePath("google");
}

然后我想用Intent打开那个图像，但是当我打开它时我只看到hourglass picture。为什么会发生这种情况，几秒钟后我就能在图像库中正确地看到图片。

@Override 
public void openImage() {
    File file = new File(path_to_saved_google);

    media_scanner = new SingleMediaScanner(this, file); 
    try { Thread.sleep(1000); } catch (InterruptedException e) { e.printStackTrace(); }

    Intent intent = new Intent();
    intent.setAction(android.content.Intent.ACTION_VIEW);
    intent.setDataAndType(Uri.fromFile(new File(path)), "image/png");
    startActivity(intent);
}