具有多个操作的多个通知

Question

我有多个通知，每个通知都有两个按钮（Start 和 Pause），如下图所示，每个通知都属于一个唯一的用户。每个通知都有一个基于每个用户名的唯一通知 ID。我使用 pending intent 和 putExtra 来处理操作按钮，但它不起作用。 putExtra 将发送，useName 对每个用户都是唯一的：

intentPause.putExtra(userName,"pause");
intentResume.putExtra(userName,"start");

我认为问题是我不知道每次单击操作按钮时我正在处理哪个通知，以便从 putExtra 接收字符串的 BroadcastReceiver onReceive 方法。如何在 intentPause.putExtra(userName,"pause"); 中获取字符串 userName 以便将其放入 String action = intent.getStringExtra(userName); 抱歉我的英语不好。

public void onReceive(Context context, Intent intent) {
       
            String action = intent.getStringExtra(userName);//Dont know how to get UserName from PutExtra
            if (action.equals("resume")) {
                timerResume();
                Log.d("Action:", action);

            } else if (action.equals("pause")) {
                timerCancel();
                Log.d("Action:", action);

            }
       
    }
    public void timerResume(){
        MainActivity.timerMap.get(userName).countDownTimer.start();

        Log.d("Test resume:",userName);

    }

    public void timerCancel(){
        MainActivity.timerMap.get(userName).countDownTimer.cancel();
        Log.d("Test cancel:",userName);

    }

基于@alexal1 的回答。我已经试过了，但是 getStringExtra 在 BroadCast Receiver 总是 return NULL

Manifest.xml

<receiver android:name=".NotificationReceiver2">
            <intent-filter>
            <action android:name="com.tuan.timer.ACTION_PAUSE" />
            <action android:name="com.tuan.timer.ACTION_RESUME" />
            </intent-filter>
        </receiver>

NotificationReceiver2

public class NotificationReceiver2 extends BroadcastReceiver {
    public static final String ACTION_PAUSE= "com.tuan.timer.ACTION_PAUSE";
    public static final String ACTION_RESUME= "com.tuan.timer.ACTION_RESUME";
    public static final String EXTRA_USER_NAME = "user_name";
    String userName;
    String action;
    @Override
    public void onReceive(Context context, Intent intent) {
        action = intent.getAction();
        Bundle bundle=intent.getExtras();

//getStringExtra return NULL
        Log.d ("myApplication", bundle2string(bundle) + " is a key in the bundle");
        Log.d ("get extra user name", intent.getStringExtra(EXTRA_USER_NAME) );


        if(action != null){
            Log.d("Action: ",action );
        }
        else{
            Log.d("Action: ","is null" );
        }

    }

MainActivity

intentPause=new Intent(this, notificationReceiver2.class);
intentPause.setAction(NotificationReceiver2.ACTION_PAUSE);
intentPause.putExtra(EXTRA_USER_NAME,userName);
Log.d("Put Extra:",NotificationReceiver2.ACTION_PAUSE);
        pendingIntentPause=PendingIntent.getBroadcast(this,notificationId,this.intentPause,PendingIntent.FLAG_UPDATE_CURRENT);
        
 intentResume=new Intent(this, notificationReceiver2);
 intentResume.setAction(NotificationReceiver2.ACTION_RESUME);
   intentResume.putExtra(EXTRA_USER_NAME,userName);
        Log.d("Put Extra:",NotificationReceiver2.ACTION_RESUME);

Answer 1

您似乎没有正确使用 putExtra()。它不放置两个值，而是按一个键放置一个值。所以，你应该像这样构建你的 Intents：

String ACTION_PAUSE = "pause";
String EXTRA_USER_NAME = "user_name";
Intent intentPause = new Intent(this, MyBroadcastReceiver.class);
intentPause.setAction(ACTION_PAUSE); // we put button action in a specific field, not in extras
intentPause.putExtra(EXTRA_USER_NAME, userName);

然后用 PendingIntent 包装这个 Intent 并附加到您的通知：

PendingIntent pendingIntentPause = PendingIntent.getBroadcast(this, 0, intentPause, 0);

在您的 BroadcastReceiver 中首先检查操作类型，然后才从 extras 中获取数据：

public void onReceive(Context context, Intent intent) {
    String action = intent.getAction();
    if (action.equals(ACTION_PAUSE)) {
        timerResume();
        Log.d("Action:", action);
        String userName = intent.getStringExtra(EXTRA_USER_NAME);
    }
    ...
}

具有多个操作的多个通知

Multiple notifications with multiple action

android

android-notifications