如何在所有活动中以特定时间间隔显示对话框？

Question

在我的应用程序中，我将在特定的时间间隔内显示对话框，因为该时间间隔在单独的类中使用可运行方法。

我的可运行方法类

public class Timeout_function{

Handler mHandler;
Activity activity;

public Timeout_function(Activity activity,Handler mHandler) {
    super();
    this.activity = activity;
    this.mHandler = mHandler;

}

Runnable first_Task = new Runnable() {
    public void run() {


        dialog = new Dialog(activity);
        if(isShown){
            dialog.dismiss();
            dialog_msgs = "Your order is going to Expired. You want to continue.";
            dialogs();
        }
        else
        {
            dialog_msgs = "Your order is going to Expired. You want to continue.";
            dialogs();
        }

        mHandler.removeCallbacks(first_Task);
    }
    }
};

Runnable second_Task = new Runnable() {
    public void run() {





                dialog = new Dialog(activity);
                if(isShown){
                    dialog.dismiss();
                    dialog_msgs = "Your order is going to Expired. You want to continue.";
                    dialogs();
                }
                else
                {
                    dialog_msgs = "Your order is going to Expired. You want to continue.";
                    dialogs();
                }

            mHandler.removeCallbacks(second_Task);

    }
};

// just as an example, we'll start the task when the activity is started
public void onStart() {

    Time_out = 1;
    mHandler.postDelayed(first_Task, 2 * 30 * 1000);
}

public void onStart_extend(){
    mHandler.postDelayed(second_Task, 1 * 30 * 1000);
}

// at some point in your program you will probably want the handler to stop (in onStop is a good place)
public void onStop() {

        mHandler.removeCallbacks(first_Task);   
        mHandler.removeCallbacks(second_Task);

}


//Error Messages

public void dialogs(){

Typeface font = Typeface.createFromAsset(activity.getAssets(), "fonts/CALIBRI.TTF");;
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialog.getWindow().setBackgroundDrawable(new ColorDrawable(0));
dialog.setContentView(R.layout.dialog_timeout);
dialog.setCancelable(false);
isShown=true;

TextView tv_msg = (TextView)dialog.findViewById(R.id.dialog_texts);
tv_msg.setTypeface(font);
tv_msg.setText(""+dialog_msgs);

Button no =(Button)dialog.findViewById(R.id.dialog_no);
no.setOnClickListener(new View.OnClickListener() {

    public void onClick(View v) {
        // TODO Auto-generated method stub

        dialog.dismiss();
        order_list_remove();
        Time_out = 0;
        //onStop();
    }
});

Button yes =(Button)dialog.findViewById(R.id.dialog_yes);
yes.setOnClickListener(new View.OnClickListener() {

    public void onClick(View v) {
        // TODO Auto-generated method stub

        onStart_extend();
        dialog.dismiss();
    }
});
dialog.show();
}
}

我有活动 A、B、C 将只在活动 b 中启动这个可运行的方法，例如

Timeout_function time_out ;
Handler mHandler;
mHandler = new Handler();
time_out = new Timeout_function(activityb.this, mHandler);
time_out.onStart();

这样，我想在一定的时间间隔内显示对话框。如果活动 A 中的用户意味着在活动 A 中显示对话框，就像在 B 和 c 中一样，我不知道如何在所有活动中显示对话框.谁能知道请帮我解决这个问题。

Answer 1

1. 使用服务来维护按间隔显示的对话框

2. 使用对话活动。您可以像创建活动一样创建它。在清单中使用以下内容

       android:excludeFromRecents="true"
       android:launchMode="singleInstance"
       android:taskAffinity=""
       android:theme="@android:style/Theme.Dialog"
   

3. 现在从服务中，在间隔启动对话活动时像常规活动一样。