16

我正在尝试转换我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。我正在尝试自己创建一个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Activity的仍然可见。

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>

这就是我Activity想要推出的...

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");
    }
}
4

6 回答 6

25

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活动。对于那些这不起作用的人可能是因为您没有在清单中“注册”该活动。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。希望它有所帮助...

于 2012-04-17T03:16:49.517 回答
4

我解决了这个问题。我忘记在清单文件的活动声明中包含包名称。

错误的:

activity android:name=".ViewTarget" android:label="@string/app_name" 

正确的:

activity android:name="com.kjdv.gpsVegas.ViewTarget" android:label="@string/app_name" 
于 2012-04-19T02:01:18.270 回答
4

您应该为 Intent 设置操作和类别。

Intent startMyActivity = new Intent(context, ourClass);
startMyActivity .setAction(Intent.ACTION_MAIN);
startMyActivity .addCategory(Intent.CATEGORY_LAUNCHER);

有用

于 2015-05-20T14:28:52.220 回答
1

您可以尝试删除 Intent 过滤器,它看起来像这样:

<activity android:name=".ViewTarget" android:label="@string/app_name" />

另外,不确定此代码是否有效:

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

你可以这样尝试吗:

Intent startMyActivity = new Intent(context, ViewTarget.class);

于 2012-04-17T03:04:30.233 回答
1

检查此代码

            public class TestActivity extends Activity {
private static final int UNIQUE_ID = 882;

public static NotificationManager nm;
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

        Intent navigationIntent = new Intent();


    navigationIntent.setClass(classname.this, MainActivity.class);


    PendingIntent pi = PendingIntent.getActivity(this, 0, navigationIntent,
            0);

    String body = "New notificattion added!!!";
    String title = "Notification";


    Notification n = new Notification(R.drawable.icon, body,
            System.currentTimeMillis());

            //this is for giving number on the notification icon

    n.number = Integer.parseInt(responseText);

    n.setLatestEventInfo(this, title, body, pi);
    n.defaults = Notification.DEFAULT_ALL;

    nm.notify(UNIQUE_ID, n);
于 2012-04-17T03:20:59.583 回答
1

为了Activity从一个启动一个Intent,你需要添加一个标志:

intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

即使您在Intent的构造函数中声明类也是如此。

于 2012-04-17T05:05:32.373 回答