Question

我有一个位置监听器在服务类内部的一个单独的线程上运行，如下所示：

public void onCreate() {
        locationManager = (LocationManager) getApplicationContext().getSystemService(Context.LOCATION_SERVICE);

        final Criteria locCriteria = new Criteria();
        locCriteria.setPowerRequirement(Criteria.POWER_LOW);
        locCriteria.setAccuracy(Criteria.ACCURACY_FINE);
        locCriteria.setSpeedRequired(true);

        locThread = new Thread(new Runnable() {
            @Override
            public void run() {
                provider = locationManager.getBestProvider(locCriteria, true);
                listener = new LocationListener() {
                    @Override
                    public void onLocationChanged(Location location) {
                        longitude = location.getLongitude();
                        latitude = location.getLatitude();
                        Log.i("Lat changed", String.valueOf(latitude));
                        Log.i("Lon changed", String.valueOf(longitude));
                    }

如何将cordinates发送回主活动类以使其显示在文本视图中？除了使用广播。

Answer 1

尝试使用我的代码

创建类似

的界面

public interface Message {
void latitudeandlongitude(double lat,double log);
}

然后在您的服务类

public void oncreate()
{
    Message ms=new Activity();

    new Thread(new Runnable() {
        @Override
        public void run() {
            for(int i=0;i<=10;i++)
            {
                //pass the latitude and longitude value
                ms.latitudeandlongitude(50.264,96.856);
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }
    }).start();
}

然后在您的活动中

public class Activity implements Message {
String textview; //use findviewbyId in oncreate method
@Override
public void latitudeandlongitude(double lat, double log) {
    textview.setText("Your latitude "+lat+" Your longitude "+log);

    //System.out.println("Your latitude "+lat+" Your longitude "+log);
}

}

Answer 2

您可以将LocationListener的实例传递给您的服务，而不是在那里实现侦听器。例如：

public class MyService extends Service {

    private LocationListener locationListener;

    public MyService(LocationListener locationListener) {
        this.locationListener = locationListener;
    }

    @Override
    public void onCreate() {
        // Do your stuff
        // add this location listener where it needs to be
    }

}

然后，在您的活动或片段中，您实施LocationListener并根据需要处理结果。

将变量从服务内的线程发送到主要活动

2 个答案: