Question

我在通过通知将数据从服务发送到活动时遇到问题，我点击通知活动被调用但是当我尝试通过包添加一些参数时我无法获得该被调用意图中的参数，我有通过链接 How to send parameters from a notification-click to an activity?

但仍然没有运气。

是否与其他人发生了同样的问题？

提前致谢。

Answer 1

您还必须修改清单文件。

以下是有效的示例：

这些变量和方法是Service class的成员：

public static final String MOVEMENT_UPDATE = "com.client.gaitlink.AccelerationService.action.MOVEMENT_UPDATE";
    public static final String ACCELERATION_X = "com.client.gaitlink.AccelerationService.ACCELERATION_X";
    public static final String ACCELERATION_Y = "com.client.gaitlink.AccelerationService.ACCELERATION_Y";
    public static final String ACCELERATION_Z = "com.client.gaitlink.AccelerationService.ACCELERATION_Z";

private void announceAccelerationChanges()//this method sends broadcast messages
    {
        Intent intent = new Intent(MOVEMENT_UPDATE);
        intent.putExtra(ACCELERATION_X, accelerationX);
        intent.putExtra(ACCELERATION_Y, accelerationY);
        intent.putExtra(ACCELERATION_Z, accelerationZ);

        sendBroadcast(intent);
    }

这是主要活动的方法：

您必须在onResume方法中注册接收器：

    @Override
    public void onResume()
    {   

        IntentFilter movementFilter;
        movementFilter = new IntentFilter(AccelerationService.MOVEMENT_UPDATE);
        accelerationReceiver = new AccelerationServiceReceiver();
        registerReceiver(accelerationReceiver, movementFilter);


        startAccelerationService();

        super.onResume();
    }

    private void startAccelerationService()
    {
        startService(new Intent(this, AccelerationService.class));
    }

    public class AccelerationServiceReceiver extends BroadcastReceiver
    {
      @Override
        public void onReceive(Context context, Intent intent)//this method receives broadcast messages. Be sure to modify AndroidManifest.xml file in order to enable message receiving
        {
            accelerationX = intent.getDoubleExtra(AccelerationService.ACCELERATION_X, 0);
            accelerationY = intent.getDoubleExtra(AccelerationService.ACCELERATION_Y, 0);
            accelerationZ = intent.getDoubleExtra(AccelerationService.ACCELERATION_Z, 0);

            announceSession();

            updateGUI();
        }
    }

这是AndroidManifest.xml文件的一部分，必须设置才能接收广播消息：

<activity android:name=".GaitLink"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />

                <action android:name="com.client.gaitlink.CommunicationService.action.ACTIVITY_STATUS_UPDATE" />

            </intent-filter>
        </activity>

将数据从服务发送到活动

1 个答案: