Android view.getLocationOnScreen（位置）返回错误的Y坐标 这会导致另一种观点在第一视角中间的某个地方，而不是它的顶部。

这基本上就是setLocation方法的逻辑：

int[] locations = new int[2];
view.getLocationOnScreen(locations);
int x = locations[0];
int y = locations[1];
otherView.setLocation(x, y);

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只是猜测，但我注意到您没有确保默认生成的对话框的边距为零。也许可以试试这个：

final Dialog dialog = new Dialog(getActivity());
dialog.getWindow().requestFeature(Window.FEATURE_NO_TITLE);
dialog.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
            WindowManager.LayoutParams.FLAG_FULLSCREEN);
dialog.setContentView(R.layout.custom_dialog);
dialog.getWindow().setBackgroundDrawable(
            new ColorDrawable(Color.TRANSPARENT));

WindowManager.LayoutParams layoutParams = dialog.getWindow().getAttributes();
layoutParams.gravity = Gravity.TOP | Gravity.LEFT;
layoutParams.x = mX;
layoutParams.y = mY;
dialog.getWindow().setAttributes(layoutParams);

return dialog;

    WindowManager.LayoutParams lp...

    lp.horizontalMargin = 0;
    lp.verticalMargin = 0;