Question

我是android开发的新手。

我创建了一个用于接收pushNotification的后台服务（使用我们自己的套接字服务，而不是FCM）。现在我的设备收到消息并成功显示通知。但是，当我单击通知时，它不会返回我的应用程序。

当我单击通知时，显示以下错误： ActivityManager：无法启动服务意图{cmp = com.my.app / package.name.AppActivity} U = 0：找不到

这是我的代码：


    public static void setNotification(Service service, String message) {

        NotificationManager manager = (NotificationManager) service.getSystemService(NOTIFICATION_SERVICE);

        String appName = service.getString(R.string.app_name);
        Uri alarmSound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
        NotificationCompat.Builder builder = new NotificationCompat.Builder(service)
                .setContentTitle(appName)
                .setContentText(message) 
                .setContentIntent(getDefaultIntent(service)) 
                .setWhen(System.currentTimeMillis()) 
                .setOngoing(false)
                .setAutoCancel(true)
                .setDefaults(Notification.DEFAULT_VIBRATE) 
                .setSmallIcon(R.drawable.icon) 
                .setLargeIcon(BitmapFactory.decodeResource(service.getResources(), R.drawable.icon)) 
                .setSound(alarmSound); 
        Notification notification = builder.build(); 
        notification.flags |= Notification.FLAG_AUTO_CANCEL;

        manager.notify(1, notification);
    }

    private static PendingIntent getDefaultIntent(Service service) {
        Intent intent = new Intent(service, AppActivity.class);
        PendingIntent pendingIntent = PendingIntent.getService(service, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);
        return pendingIntent;
    }
}

AndroidManifest.xml中的MainActivity设置

<activity android:name="package.name.AppActivity" android:configChanges="orientation|screenSize" android:label="@string/app_name" android:launchMode="singleTask" android:screenOrientation="landscape" android:theme= "@android:style/Theme.NoTitleBar.Fullscreen" android:enabled="true" android:exported="true">
      <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
      </intent-filter>

    </activity>

请指导我这段代码中我所缺少或做错的事情。非常感谢。

Answer 1

我在填充意图和manager.notify（0，notification）;

中传递了相同的ID

并使用PendingIntent.getActivity而不是PendingIntent.getService

有效！

Answer 2

我遇到的问题是，您仅取消了当前通知，这就是为什么Intent无法触发活动更改您的Pending Intent

来自

    componentDidMount() {
        fetch('https://facebook.github.io/react-native/movies.json')
          .then(response => response.json())
          .then(responseJson => {
            //Successful response from the API Call
            this.setState({
              serverData: [...this.state.serverData, ...responseJson.movies],
              //adding the new data in Data Source of the SearchableDropdown
            });
          })
          .catch(error => {
            console.error(error);
          });
      }
      render() {
        return (
          <View style={{ flex: 1, marginTop: 30 }}>
            <Text style={{ marginLeft: 10 }}>
              Searchable Dropdown from Dynamic Array from Server
            </Text>
            <SearchableDropdown
              setSort={(item, searchedText)=> item.title.toLowerCase().startsWith(searchedText.toLowerCase())}
              onTextChange={text => console.log(text)}
              //On text change listner on the searchable input
              onItemSelect={item => alert(JSON.stringify(item))}
              //onItemSelect called after the selection from the dropdown
              containerStyle={{ padding: 5 }}
              //suggestion container style
              textInputStyle={{
                //inserted text style
                padding: 12,
                borderWidth: 1,
                borderColor: '#ccc',
                backgroundColor: '#FAF7F6',
              }}
              itemStyle={{
                //single dropdown item style
                padding: 10,
                marginTop: 2,
                backgroundColor: '#FAF9F8',
                borderColor: '#bbb',
                borderWidth: 1,
              }}
              itemTextStyle={{
                //single dropdown item's text style
                color: '#222',
              }}
              itemsContainerStyle={{
                //items container style you can pass maxHeight
                //to restrict the items dropdown hieght
                maxHeight: '50%',
              }}
              items={this.state.serverData}
              //mapping of item array
              defaultIndex={2}
              //default selected item index
              placeholder="placeholder"
              //place holder for the search input
              resetValue={false}
              //reset textInput Value with true and false state
              underlineColorAndroid="transparent"
              //To remove the underline from the android input
            />
          </View>
        );
      }

到

 PendingIntent.FLAG_CANCEL_CURRENT);

在后台单击通知无法打开我的应用程序？

2 个答案: