android - 是否可以从对话框中调用 onReceive 方法？

Question

我有一个带有 editText 和 save button 的自定义对话框。单击按钮 时，我希望它调用MyReceiver。但是 MyReceiver 中的日志和 Toast 永远不会显示。

提醒

  final AlertDialog.Builder builder = new AlertDialog.Builder(this);
                LayoutInflater inflater = LayoutInflater.from(this);
                View promptView = getLayoutInflater().inflate(R.layout.dialog_with_edittext, null);
                Button save = (Button) promptView.findViewById(R.id.okBtn);
                final EditText task = (EditText) promptView.findViewById(R.id.task);
                time = (EditText) promptView.findViewById(R.id.time);
                date = (EditText) promptView.findViewById(R.id.date);
                final AlertDialog alert = builder.create();
                date.setOnClickListener(this);

                save.setOnClickListener(new View.OnClickListener() {
                    public void onClick(View v) {
                        String addTask= task.getText().toString();
                        String time1= time.getText().toString();
                        String date1= date.getText().toString();
                        if (adapter != null) {
                            adapter.add(addTask,time1,date1);
                            insertTask(addTask, time1, date1);
                            listview.setAdapter(adapter);
                            alert.dismiss();
                            check();
                        }
                        c.set(Calendar.YEAR,year1);
                        c.set(Calendar.MONTH, month1);
                        c.set(Calendar.DAY_OF_MONTH, day1);
                        c.set(Calendar.HOUR_OF_DAY, hour1);
                        c.set(Calendar.MINUTE, min1);
                        c.set(Calendar.SECOND, 0);
                        c.set(Calendar.AM_PM,Calendar.AM);
                        Toast.makeText(getApplicationContext(),year1+""+month1+""+day1+"",Toast.LENGTH_SHORT).show();
                        Toast.makeText(getApplicationContext(),hour1+""+min1+"",Toast.LENGTH_SHORT).show();
                        Intent myIntent = new Intent(ReminderPage.this, MyReceiver.class);
                        pendingIntent = PendingIntent.getBroadcast(ReminderPage.this, 123456789, myIntent,0);
                        AlarmManager alarmManager = (AlarmManager)getSystemService(ALARM_SERVICE);
                        alarmManager.set(AlarmManager.RTC_WAKEUP, c.getTimeInMillis(), pendingIntent);
                        Toast.makeText(getApplicationContext(),"Alarm",Toast.LENGTH_SHORT).show();
                }
                });
                alert.setView(promptView);
                alert.show();
                return true;

我的接收者

public class MyReceiver extends BroadcastReceiver
{

    @Override
    public void onReceive(Context context, Intent intent)
    {
        Log.i("App", "called receiver method");
        try{
            Toast.makeText(context,"Call Utils1",Toast.LENGTH_SHORT).show();
            Utils1.generateNotification(context);
        }catch(Exception e){
            Toast.makeText(context,"Not Call Utils1",Toast.LENGTH_SHORT).show();
            e.printStackTrace();
        }
    }
}

我还在我的 AndroidMainfest 中添加了这个

 <receiver android:name="com.example.MyReceiver"></receiver>

实用工具1

public class Utils1 {

        public static NotificationManager mManager;

        @SuppressWarnings("static-access")
        public static void generateNotification(Context context){
            mManager = (NotificationManager) context.getSystemService(context.NOTIFICATION_SERVICE);
            Intent intent1 = new Intent(context,Register.class);
            PendingIntent pendingIntent = PendingIntent.getActivity(context, 1, intent1, 0);
            Notification.Builder builder = new Notification.Builder(context);
            builder.setAutoCancel(false);
            builder.setTicker("this is ticker text");
            builder.setContentTitle("WhatsApp Notification");
            builder.setContentText("You have a new message");
            builder.setSmallIcon(R.drawable.done);
            builder.setContentIntent(pendingIntent);
            builder.setOngoing(true);
            builder.setSubText("This is subtext...");   //API level 16
            builder.setNumber(100);
            builder.build();

            Notification myNotication = builder.getNotification();
            mManager.notify(0, myNotication);
        }
    }

如有任何帮助，我们将不胜感激。

Answer 1

根据您的问题，以下步骤将为您提供您想要的。

1.) 在您的 AndroidManifest.xml 中替换您的 receiver

<receiver android:name="com.example.MyReceiver"></receiver>

通过以下方式:

<receiver android:name=".MyReceiver" />

2.) 最后在您的按钮监听器代码中添加:

save.setOnClickListener(new View.OnClickListener() {
    public void onClick(View v) {
        // ...
        getApplicationContext().sendBroadcast(
                new Intent(getApplicationContext(), MyReceiver.class));
        // ...
    }
});

就是这样，现在运行您的应用程序。每当您单击 save 按钮时，您会注意到类 MyReceiver 中的 onReceive() 方法将被正确调用。这意味着您的 logcat 输出将是

I/App: called receiver method

正如预期的那样，您的 Toast 消息 Call Utils1 也将正确显示。