java - 用户单击通知时如何启动 Activity ？

Question

我正在尝试转换在教程中找到的一些代码供我自己使用。最初，当用户单击我的应用生成的通知时，代码会启动系统联系人列表。我正在尝试启动自己的 Activity 而不是启动联系人列表，但它不起作用。更具体地说，没有任何反应。没有错误，我的 Activity 也没有加载。点击后通知窗口消失，原来的Activity依然可见。

这是我的代码:

public class MyBroadcastReceiver extends BroadcastReceiver {
    private NotificationManager mNotificationManager;
    private int SIMPLE_NOTFICATION_ID;

    public void onReceive(Context context, Intent intent){
        Bundle extras = intent.getExtras();

        String deal = (String) extras.get("Deal");
        String title = "Deal found at " + (String) extras.get("LocationName");

        mNotificationManager = (NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE);
        Notification notifyDetails = new Notification(R.drawable.icon, title,System.currentTimeMillis());

        Class ourClass;
        try {
            ourClass = Class.forName("com.kjdv.gpsVegas.ViewTarget");
            Intent startMyActivity = new Intent(context, ourClass);

            PendingIntent myIntent = PendingIntent.getActivity(context, 0,startMyActivity, 0);
            notifyDetails.setLatestEventInfo(context, title, deal, myIntent);
            notifyDetails.flags |= Notification.FLAG_AUTO_CANCEL;
            notifyDetails.flags |= Notification.DEFAULT_SOUND;
            mNotificationManager.notify(SIMPLE_NOTFICATION_ID, notifyDetails);
        }
        catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
    }
}

这是我在 AndroidManifext.xml 文件中的条目...

  <activity android:name=".ViewTarget" android:label="@string/app_name" >
        <intent-filter>
            <action android:name="com.kjdv.gpsVegas.ViewTarget" />
            <category android:name="android.intent.category.DEFAULT" />
        </intent-filter>
   </activity>

这是我要启动的Activity...

public class ViewTarget extends ListActivity {
    public ListAdapter getListAdapter() {
        return super.getListAdapter();
    }

    public ListView getListView() {
        return super.getListView();
    }

    public void setListAdapter(ListAdapter adapter) {
        super.setListAdapter(adapter);
    }

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.locations);
        Log.v("db", "Inside ViewTarget");
    }
}

Answer 1

您在哪个 Android 版本上运行？您可能想尝试改用 NotificationCompat。此类包含在最新的支持包中。

Intent notificationIntent = new Intent(context, ViewTarget.class);
PendingIntent contentIntent = PendingIntent.getActivity(context,
                0, notificationIntent,
                PendingIntent.FLAG_CANCEL_CURRENT);

NotificationManager nm = (NotificationManager) context
                .getSystemService(Context.NOTIFICATION_SERVICE);

Resources res = context.getResources();
NotificationCompat.Builder builder = new NotificationCompat.Builder(context);
builder.setContentIntent(contentIntent)
       .setSmallIcon(R.drawable.app_icon)
       .setLargeIcon(BitmapFactory.decodeResource(res, R.drawable.app_icon))
       .setTicker(payload)
       .setWhen(System.currentTimeMillis())
       .setAutoCancel(true)
       .setContentTitle("Message")
       .setContentText(payload);
Notification n = builder.getNotification();

n.defaults |= Notification.DEFAULT_ALL;
nm.notify(0, n);

编辑:我知道这是一个旧线程/问题，但这个答案帮助我在点击通知时显示 Activity 。对于那些这不起作用的人可能是因为您没有在 list 中“注册”该 Activity 。例如:

<activity
   android:name="com.package.name.NameOfActivityToLaunch"
   android:label="Title of Activity" >
   <intent-filter>
     <action android:name="com.package.name.NAMEOFACTIVITYTOLAUNCH" />

     <category android:name="android.intent.category.DEFAULT" />
   </intent-filter>
</activity>

而且，希望这应该有效。希望对您有所帮助...