android - 警报对话框 android studio

Question

我正在尝试显示一个包含加载动画的警报对话框。单击最初显示的另一个警报对话框后，需要显示警报对话框。基本上，第一个对话框包含一个 setPositive 和 setNegative 按钮。 setPositive 事件会触发一个需要几秒钟的过程。我希望在进程开始时出现包含加载动画的第二个对话框。在显示加载对话框的过程完成之前，我无法关闭第一个对话框。

//dialog that contains loading animation
    public class LoadingBox {
    Activity myActivity;
    AlertDialog dialog;

    LoadingBox(Activity activity){
        myActivity = activity;
    }
     void startLoadingDialog(){
        AlertDialog.Builder builder = new AlertDialog.Builder(myActivity);
        LayoutInflater inflater = myActivity.getLayoutInflater();
        builder.setView(inflater.inflate(R.layout.layout_dialog,null));
        builder.setCancelable(true);
        dialog = builder.create();
        dialog.show();
    }
    void dismissDialog(){
        dialog.dismiss();
    }
}

 

      
     new AlertDialog.Builder(SmsListActivity.this)
    
                            .setIcon(android.R.drawable.ic_dialog_alert)
                            .setTitle("Add To Transaction List")
                            .setMessage("Please note that this process might take long. Proceed?")
                            .setPositiveButton("yes", new DialogInterface.OnClickListener() {
                                @Override
                                public void onClick(DialogInterface dialog, int which) {
                                    LoadingBox loadingBox = new LoadingBox(SmsListActivity.this);
    
                                    loadingBox.startLoadingDialog();
    
                                    addPendingToList();
                                    loadingBox.dismissDialog();
    
    
                                }
                            }).setNegativeButton("No",null).show();

Answer 1

要关闭此警报对话框，您应该在 setPositiveButton onClick 中调用 dialog.dismiss();

 new AlertDialog.Builder(SmsListActivity.this) .setIcon(android.R.drawable.ic_dialog_alert)
           .setTitle("Add To Transaction List")
           .setMessage("Please note that this process might take long. Proceed?")
           .setPositiveButton("yes", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {                    
        dialog.dismiss();
        LoadingBox loadingBox = new LoadingBox(SmsListActivity.this);
    loadingBox.startLoadingDialog();
    addPendingToList();
    loadingBox.dismissDialog();
    }
      }).setNegativeButton("No",null).show();