点击"忽略"按钮后如何关闭通知对话框，无需调用任何活动。

Question

IMAGE 我有一段代码，它可以正常工作并关闭通知。但是当我点击“dismiss”按钮时，它会打开应用程序并关闭对话框，这对我来说是不必要的。实际上，我希望在点击“DISMISS”按钮后，通知对话框可以关闭而不打开任何活动。

MainActivity.java

public class MainActivity extends Activity{
    static int numMessages = 0;
    Context context;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.notificationmain);
        context = getApplicationContext();

        Button bcustomnotifyaction = (Button)  findViewById(R.id.customnotificationaction);

        bcustomnotifyaction.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                CustomNotificationAction();

            }
        });

    }

    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    private void CustomNotificationAction() {
        // Set Notification Title
        String strtitle = "You Got New Notification.";
        // Set Notification Text
        String strtext ="Hi,How are You?";

        // Open NotificationView Class on Notification Click
        Intent intent = new Intent(this, NotificationView.class);
        // Send data to NotificationView Class
        intent.putExtra("title", strtitle);
        intent.putExtra("text", strtext);
        // Open NotificationView.java Activity
        PendingIntent pIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);


        int notificationId = new Random().nextInt(); // just use a counter in some util class...
        PendingIntent dismissIntent = NotificationActivity.getDismissIntent(notificationId, getApplicationContext());

        //Create Notification using NotificationCompat.Builder
        NotificationCompat.Builder builder = new NotificationCompat.Builder(this)
                // Set Icon
                .setSmallIcon(R.drawable.logosmall)
                // Set Ticker Message
                .setTicker(strtitle)
                // Set Title
                .setContentTitle(strtitle)
                // Set Text
                .setContentText(strtext)
                // Add an Action Button below Notification
                .addAction(android.R.drawable.ic_menu_close_clear_cancel, "Dismiss", dismissIntent)
                .addAction(android.R.drawable.ic_menu_info_details, "Info", pIntent)
                // Set PendingIntent into Notification
                .setContentIntent(pIntent)
                // showing action button on notification
                .setPriority(Notification.PRIORITY_MAX)
                .setWhen(0)

                /* Increase notification number every time a new notification arrives */
                .setNumber(++numMessages)

                // Dismiss Notification
                .setAutoCancel(true);

        // Create Notification Manager
        NotificationManager notificationmanager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
        // Build Notification with Notification Manager
        notificationmanager.notify(0, builder.build());

    } 
}

notificationmain.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".NotificationView" >
<Button
    android:id="@+id/customnotificationaction"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"
    android:text="@string/customnotificationaction" />
</RelativeLayout>

NotificationView.java

public class NotificationView extends Activity {
String title;
String text;
TextView txttitle;
TextView txttext;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.notificationview);

    // Create Notification Manager
    NotificationManager notificationmanager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    // Dismiss Notification
    notificationmanager.cancel(0);

    // Retrive the data from MainActivity.java
    Intent i = getIntent();

    title = i.getStringExtra("title");
    text = i.getStringExtra("text");

    // Locate the TextView
    txttitle = (TextView) findViewById(R.id.title);
    txttext = (TextView) findViewById(R.id.text);

    // Set the data into TextView
    txttitle.setText(title);
    txttext.setText(text);
}
}

notificationview.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >

<TextView
    android:id="@+id/lbltitle"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/lbltitle" />

<TextView
    android:id="@+id/lbltext"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/lbltitle"
    android:text="@string/lbltext" />

<TextView
    android:id="@+id/title"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_toRightOf="@+id/lbltitle" />

<TextView
    android:id="@+id/text"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
     android:layout_below="@+id/title"
    android:layout_toRightOf="@+id/lbltext" />

</RelativeLayout>

NotificationActivity.java

public class NotificationActivity extends Activity {

public static final String NOTIFICATION_ID = "NOTIFICATION_ID";

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    manager.cancel(0);
    finish(); // since finish() is called in onCreate(), onDestroy() will be called immediately
}

public static PendingIntent getDismissIntent(int notificationId, Context context) {
    Intent intent = new Intent(context, NotificationActivity.class);
    intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
    intent.putExtra(NOTIFICATION_ID, notificationId);
    PendingIntent dismissIntent = PendingIntent.getActivity(context, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);
    return dismissIntent;
} 
}

解决方案：

我通过使用广播接收器得到了解决方案。

我更改的代码如下： 我在MainActivity.java的CustomNotificationAction()中添加了此代码。

//Create an Intent for the BroadcastReceiver
        Intent buttonIntent = new Intent(context, ButtonReceiver.class);
        //Create the PendingIntent
        PendingIntent btPendingIntent = PendingIntent.getBroadcast(context, 0, buttonIntent,0);

并将此行更改为

 .addAction(android.R.drawable.ic_menu_close_clear_cancel, "Dismiss", dismissIntent)

至

.addAction(android.R.drawable.ic_menu_close_clear_cancel, "Dismiss", btPendingIntent)

添加了一个Java文件

ButtonReceiver.java

public class ButtonReceiver extends BroadcastReceiver  {

@Override
public void onReceive(Context context, Intent intent) {
    Toast.makeText(context, "Notification Dialog Closed",
            Toast.LENGTH_LONG).show();
    Log.d("Notification:","Notification Dialog Closed");
    NotificationManager manager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
    manager.cancel(0);

    PendingIntent resultPendingIntent = PendingIntent.getActivity(context,  0, new Intent(), 0);
    NotificationCompat.Builder mb = new NotificationCompat.Builder(context);
    mb.setContentIntent(resultPendingIntent);
}
}

在清单文件中注册广播。

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

我的问题已解决 :)

您还可以从此链接下载源代码：

下载源代码

- Priyanka

Answer 1

应该设置广播接收器来检测您的操作点击，而无需启动活动。

通过操作按钮解除正在进行的Android通知而无需打开应用程序

- Shahbaz Hashmi

---

我有两个操作按钮：“取消”和“信息”。对于“信息”按钮，我将打开一个活动，在其中显示一些消息；对于“取消”按钮，我希望通知对话框在不打开活动的情况下消失 :/ - Priyanka

Answer 2

您可以使用服务和广播接收器来完成，但我认为广播接收器是更好的选择。

 int final MY_NOTIFICATION_ID = 1;

        //Create an Intent for the BroadcastReceiver
        Intent buttonIntent = new Intent(context, AutoDismissReceiver.class);
        buttonIntent.putExtra("notificationId",MY_NOTIFICATION_ID);

           //Create the PendingIntent
        PendingIntent btPendingIntent = PendingIntent.getBroadcast(context, 0, buttonIntent,0);

       //Pass this PendingIntent to addAction method of Intent Builder
        NotificationCompat.Builder mb = new NotificationCompat.Builder(getBaseContext());
        .....
        .....
        mb.addAction(R.drawable.ic_dismiss, "Dismiss Action", btPendingIntent);
        manager.notify(MY_NOTIFICATION_ID, mb.build());

并且广播接收器用于上述功能。

  public class AutoDismissReceiver extends BroadcastReceiver {

            @Override
            public void onReceive(Context context, Intent intent) {
                int notificationId = intent.getIntExtra("notificationId", 0);
                NotificationManager manager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
                manager.cancel(notificationId);
            }
        }

希望这能对您有所帮助。

- Mahendra Chhimwal