OnLocationChanged回调不会被调用 [英] OnLocationChanged callback is never called

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本文介绍了OnLocationChanged回调不会被调用的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我试图让使用 LocationManager 用户的当前位置。我已经做了很多的研究，似乎无法找到任何有同样的问题。该 OnLocationChanged 回调似乎从来没有被调用。下面是我的各种code和logcat中。

I am trying to get the users current location using the LocationManager. I have done a lot of research and can't seem to find anyone with the same problem. The OnLocationChanged callback never seems to be called. Below is my various code and the logcat.

protected LocationListener locationListener;
protected LocationManager locationManager;
protected Context context;

我的的OnCreate（）方法

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    Log.v(TAG, "IN ON CREATE");

    this.context = getActivity();

    registerLocationUpdates();
}

我的 registerLocationUpdates 方法

void registerLocationUpdates() {
    Criteria criteria = new Criteria();
    criteria.setAccuracy(Criteria.ACCURACY_LOW);
    criteria.setPowerRequirement(Criteria.POWER_LOW);
    criteria.setAltitudeRequired(false);
    criteria.setBearingRequired(false);

    locationManager = (LocationManager)getActivity().getSystemService(LOCATION_SERVICE);

    provider = locationManager.getBestProvider(criteria, true);

    // Cant get a hold of provider
    if (provider == null) {
        Log.v(TAG, "Provider is null");
        showNoProvider();
        return;
    } else {
        Log.v(TAG, "Provider: " + provider);
    }

    locationListener = new MyLocationListener();

    locationManager.requestLocationUpdates(provider, 1L, 1f, locationListener);

    // connect to the GPS location service
    Location oldLocation = locationManager.getLastKnownLocation(provider);

    if (oldLocation != null)  {
        Log.v(TAG, "Got Old location");
        latitude = Double.toString(oldLocation.getLatitude());
        longitude = Double.toString(oldLocation.getLongitude());
        waitingForLocationUpdate = false;
        getNearbyStores();
    } else {
        Log.v(TAG, "NO Last Location found");
    }
}

我的 LocationListener的 

private class MyLocationListener implements LocationListener {

    public void onLocationChanged(Location location) {
        latitude = Double.toString(location.getLatitude());
        longitude = Double.toString(location.getLongitude());

        Log.v(TAG, "IN ON LOCATION CHANGE");

        if (waitingForLocationUpdate) {
            getNearbyStores();
            waitingForLocationUpdate = false;
        }

        locationManager.removeUpdates(this);
    }

    public void onStatusChanged(String s, int i, Bundle bundle) {
        Log.v(TAG, "Status changed: " + s);
    }

    public void onProviderEnabled(String s) {
        Log.e(TAG, "PROVIDER DISABLED: " + s);
    }

    public void onProviderDisabled(String s) {
        Log.e(TAG, "PROVIDER DISABLED: " + s);
    }
}

我在AndroidManifest权限

My permissions in the AndroidManifest

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

最后，我跑我的应用程序的logcat的后

And finally the logcat after I run my app

01-25 09:43:10.963: VERBOSE/NearbyListFragment(3060): IN ON CREATE
01-25 09:43:10.963: VERBOSE/LocationManagerService(1329): getProviders
01-25 09:43:10.963: VERBOSE/LocationManagerService(1329): getProviders
01-25 09:43:10.973: VERBOSE/LocationManagerService(1329): getProviders
01-25 09:43:10.983: VERBOSE/NearbyListFragment(3060): Provider: gps
01-25 09:43:10.983: DEBUG/LocationManager(3060): requestLocationUpdates: provider = gps, listener = co.fusionweb.dealsplus.app.NearbyItems$NearbyListFragment$MyLocationListener@46ef4680
01-25 09:43:10.983: DEBUG/GpsLocationProvider(1329): setMinTime 1
01-25 09:43:10.983: VERBOSE/NearbyListFragment(3060): NO Last Location found
01-25 09:43:10.983: VERBOSE/LocationManagerService(1329): _requestLocationUpdates: listener = Receiver{47421e68 Listener android.os.BinderProxy@47421a68}
01-25 09:43:11.003: VERBOSE/countingFragment(3060): IN ON CREATE VIEW
01-25 09:43:11.003: WARN/GpsLocationProvider(1329): Duplicate add listener for co.fusionweb.dealsplus
01-25 09:43:11.013: VERBOSE/ScrollListener(3060): In Constructor
01-25 09:43:11.013: VERBOSE/ScrollListener(3060): Scrolling
01-25 09:43:11.033: DEBUG/GpsLocationProvider(1329): startNavigating
01-25 09:43:11.043: DEBUG/lib_locapi(1329): loc_eng_set_qos_time_out(standalone = 60, agps = 89)
01-25 09:43:11.043: DEBUG/lib_locapi(1329): loc_eng_set_qos_accuracy(accuracy = 50)
01-25 09:43:11.043: VERBOSE/lib_locapi(1329): persist.radio.agps.mode: []
01-25 09:43:11.043: DEBUG/lib_locapi(1329): loc_eng_set_position mode, client = 1, interval = 1, mode = 1
01-25 09:43:11.043: VERBOSE/lib_locapi(1329): loc_eng_ioctl called: client = 1, ioctl_type = 2
01-25 09:43:11.043: VERBOSE/locapi_rpc_glue(1329): loc_ioctl
01-25 09:43:11.043: DEBUG/RPC(1329): written RPC packet size: [96]
01-25 09:43:11.043: DEBUG/RPC(1329): read RPC packet
01-25 09:43:11.043: DEBUG/RPC(1329): read RPC packet size: [28]
01-25 09:43:11.043: VERBOSE/locapi_rpc_glue(1329): loc_api_sync_ioctl: select_id = 0, loc_ioctl returned 0
01-25 09:43:11.043: DEBUG/RPC(1329): read RPC packet
01-25 09:43:11.043: DEBUG/RPC(1329): read RPC packet size: [80]
01-25 09:43:11.043: VERBOSE/locapi_rpc_glue(1329): Callback received: 80 (cb_id=0x5310000 handle=1)
01-25 09:43:11.043: DEBUG/RPC(1329): written RPC packet size: [28]
01-25 09:43:11.043: VERBOSE/lib_locapi(1329): loc_eng_ioctl result: client = 1, ioctl_type = 2, SUCCESS
01-25 09:43:11.043: DEBUG/lib_locapi(1329): loc_eng_start
01-25 09:43:11.043: DEBUG/locapi_rpc_glue(1329): loc_start_fix
01-25 09:43:11.043: DEBUG/RPC(1329): written RPC packet size: [44]
01-25 09:43:11.043: DEBUG/RPC(1329): read RPC packet
01-25 09:43:11.053: DEBUG/RPC(1329): read RPC packet size: [28]
01-25 09:43:11.103: DEBUG/RPC(1329): read RPC packet
01-25 09:43:11.103: DEBUG/RPC(1329): read RPC packet size: [80]
01-25 09:43:11.113: VERBOSE/locapi_rpc_glue(1329): Callback received: 100 (cb_id=0x5310000 handle=1)
01-25 09:43:11.113: VERBOSE/lib_locapi(1329): process_deferred_action: pthread_cond_wait returned
01-25 09:43:11.113: DEBUG/lib_locapi(1329): loc_eng_report_status: GPS_STATUS_SESSION_BEGIN
01-25 09:43:11.113: DEBUG/lib_locapi(1329): loc_eng_report_status: update status
01-25 09:43:11.113: VERBOSE/GpsLocationProvider(1329): reportStatus status: 1
01-25 09:43:11.113: DEBUG/GpsLocationProvider(1329): Acquiring wakelock
01-25 09:43:11.123: DEBUG/RPC(1329): written RPC packet size: [28]
01-25 09:43:11.183: DEBUG/PowerManagerService(1329): New lightsensor value:40, lcdValue:77
01-25 09:43:11.273: DEBUG/RPC(1329): read RPC packet
01-25 09:43:11.273: DEBUG/RPC(1329): read RPC packet size: [80]
01-25 09:43:11.273: VERBOSE/locapi_rpc_glue(1329): Callback received: 100 (cb_id=0x5310000 handle=1)
01-25 09:43:11.273: VERBOSE/lib_locapi(1329): process_deferred_action: pthread_cond_wait returned
01-25 09:43:11.273: DEBUG/lib_locapi(1329): loc_eng_report_status: GPS_STATUS_ENGINE_ON
01-25 09:43:11.273: DEBUG/lib_locapi(1329): loc_eng_report_status: update status
01-25 09:43:11.273: VERBOSE/GpsLocationProvider(1329): reportStatus status: 3

和中的logcat的Andr​​oid SDK的位置，部分一直在重复他们的自我。我已经试过各种我能想到的，看到的谷歌和计算器。阿尔斯就像一个方面说明我已经能够得到它使用2.3设备上工作的 requestSingleUpdate 这是API 9并按照引导的A深入了解位置，但我需要它使用在2.1或2.2和更高的工作旧的SDK。所以，如果您有任何提示或想了解更多信息，请让我知道。先谢谢了。

And the android SDK location parts of the logcat keep repeating them selves. I have tried everything that i can think of and have seen on google and stackoverflow. Als just as a side note i have been able to get it to work on a 2.3 device using the requestSingleUpdate which is available in API 9 and by following the guide A Deep Dive into Location but i need it to work on 2.1 or 2.2 and higher using the old SDK. SO if you have any hints or would like to know more please let me know. Thanks in advance.

推荐答案

它看起来像你的设置应该工作，因为它没有，我会让你的例子尽可能的简单，以排除故障。我会让你的要求看起来像

It looks like you setup should work, since it doesn't, I would make your example as simple as possible in order to troubleshoot. I would make your request look like 

requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);
requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListener);

这样你得到所有的更新成为可能。并注释掉有关获取最后一个已知位置的部分。这是没有必要的呢。

This way you get ALL the updates possible. And comment out the part about getting the last known location. It's not needed yet.

然后在 onLocationChanged（），只是有

Log.v(TAG, "IN ON LOCATION CHANGE, lat=" + latitude + ", lon=" + longitude);

注释掉其余的让你保持你的听众活跃。这应该给你一个真实的设备上更新流。在模拟器，你需要使用DDMS，你会一次比一次一台GPS更新您preSS发送。

Comment out the rest so that you keep your listener active. This should give you a stream of updates on a real device. On the emulator, you'll need to use DDMS, and you'll get one GPS update each time you press send.

这篇关于OnLocationChanged回调不会被调用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！

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