java - 如何在另一个 Activity 上膨胀布局对话框？

Question

我目前正在使用 SecondActivity.class 。在我的代码中，当我后压时，我希望对话框出现在我的 MainActivity.class 上。

这是我关于扩展对话框布局的代码。

This appears on SecondActivity.class instead of my main activity.

 View dialog = LayoutInflater.from(this).inflate(R.layout.dialog_fmcg_popup, null);
                                    TextView tvfmcg2 = dialog.findViewById(R.id.tv_fmcg2);
                                    tvfmcg2.setText(message);
                                    swipeDismissDialog = new SwipeDismissDialog.Builder(this)
                                            .setView(dialog)
                                            .setOnSwipeDismissListener(new OnSwipeDismissListener() {
                                                @Override
                                                public void onSwipeDismiss(View view, SwipeDismissDirection direction) {
                                                    Preferences.setString(Prefkey.last_qualified_fmcg_voucher_on_remove, message);
                                                }
                                            })
                                            .setFlingVelocity(0)
                                            .setOverlayColor(0)
                                            .build()
                                            .show();

Answer 1

那么您可以使用 ActivityForResult() 方法。

您需要以与您正在做的事情稍微不同的方式开始 Activity 。

startActivityForResult(new Intent(this, SecondActivity.class), 80);

然后在您的 SecondActivity.class 中重写 onBackPressed() 方法，如下所示

 @Override
    public void onBackPressed() {
        setResult(Activity.RESULT_OK,new Intent());
        finish();
    }

在您的 FirstActivity.class 中，您必须重写 onActivityResult() 方法

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {

    if (requestCode == 80) {
        if(resultCode == Activity.RESULT_OK){
            View dialog = LayoutInflater.from(this).inflate(R.layout.dialog_fmcg_popup, null);
        TextView tvfmcg2 = dialog.findViewById(R.id.tv_fmcg2);
        tvfmcg2.setText(message);
        swipeDismissDialog = new SwipeDismissDialog.Builder(this)
            .setView(dialog)
            .setOnSwipeDismissListener(new OnSwipeDismissListener()
            {
                @Override
                public void onSwipeDismiss(View view, SwipeDismissDirection direction)
                {
                    Preferences.setString(Prefkey.last_qualified_fmcg_voucher_on_remove, message);
                }
            })
            .setFlingVelocity(0)
            .setOverlayColor(0)
            .build()
            .show();
        }
    }
}