android - 使用对话框截取屏幕截图

Question

我需要以编程方式截取 Activity View 的屏幕截图。我找到了很多答案如何去做，但没有回答如何用打开的对话框做到这一点

Answer 1

好吧，这个有点棘手。据我所知，没有直接的方法可以做到这一点。这是有用的东西。我尝试拍摄单张照片并将它们分层。

Dialog dialog = // Dialog that is showing

View mainView = getSupportActivity().getWindow().getDecorView();
mainView = getSupportActivity().getWindow().getDecorView()
        .findViewById(android.R.id.content);
mainView.setDrawingCacheEnabled(true);
// This is the bitmap for the main activity
Bitmap bitmap = mainView.getDrawingCache();

View dialogView = dialog.getView();
int location[] = new int[2];
mainView.getLocationOnScreen(location);
int location2[] = new int[2];
dialogView.getLocationOnScreen(location2);

dialogView.setDrawingCacheEnabled(true);
// This is the bitmap for the dialog view
Bitmap bitmap2 = dialogView.getDrawingCache();

Canvas canvas = new Canvas(bitmap);
// Need to draw the dialogView into the right position
canvas.drawBitmap(bitmap2, location2[0] - location[0], location2[1] - location[1],
        new Paint());

String filename = // filename to save
File myPath = new File(filename);
FileOutputStream fos = null;
try {
    fos = new FileOutputStream(myPath);
    bitmap.compress(Bitmap.CompressFormat.PNG, 100, fos);
    fos.flush();
    fos.close();
    Trace.d("Twitter", "The file path is " + myPath);
} catch (FileNotFoundException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
} catch (Exception e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}

我刚刚试过了，它成功了。希望这可以帮助。如果它不起作用，请告诉我。