java.lang.IllegalArgumentException的错误：provider == null [英] error on java.lang.IllegalArgumentException: provider==null

问题描述

我发布了我的应用程序到android市场。我的主页出错了。有人写了崩溃错误。但是这个应用程序在我的真实设备中完美工作。我也添加了权限。
我的错误：

  java.lang.RuntimeException：无法启动活动ComponentInfo {com.karthi.locationspeecher / com .android.locationspeecher.LocationSpeecher}：java.lang.IllegalArgumentException：provider == null 
 at android.app.ActivityThread.performLaunchActivity（ActivityThread.java:1651）
 at android.app.ActivityThread.handleLaunchActivity（ Activity.java:1667）
 at android.app.ActivityThread.access $ 1500（ActivityThread.java:117）
 at android.app.ActivityThread $ H.handleMessage（ActivityThread.java:935）
在android.os.Handler.dispatchMessage（Handler.java:99）
在android.os.Looper.loop（Looper.java:130）
在android.app.ActivityThread.main（ActivityThread。 
 at java.lang.reflect.Method.invokeNative（Native Method）$ b $ at java.lang.reflect.Method.invoke（Method.java:507）
 at com。 android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:867）
 at com.android.internal.os.ZygoteInit.main（ZygoteInit.java:625）
 at dalvik.system.NativeStart.main（Native Method）
引起：java.lang.IllegalArgumentException：provider == null 
 at android.location.LocationManager.getLastKnownLocation（LocationManager.java:1017） 
 at com.android.locationspeecher.LocationSpeecher.onCreate（LocationSpeecher.java:84）
 at android.app.Instrumentation.callActivityOnCreate（Instrumentation.java:1047）
 at android.app.ActivityThread .performLaunchActivity（ActivityThread.java:1615）
 ... 11 more 
  

LocationManager：

  LocationManager locationManager; 
 String context = Context.LOCATION_SERVICE; 
 locationManager =（LocationManager）getSystemService（context）; 
 
标准crta = new Criteria（）; 
 crta.setAccuracy（Criteria.ACCURACY_FINE）; 
 crta.setAltitudeRequired（false）; 
 crta.setBearingRequired（false）; 
 crta.setCostAllowed（true）; 
 crta.setPowerRequirement（Criteria.POWER_LOW）; 
 String provider = locationManager.getBestProvider（crta，true）; 
 
 // String provider = LocationManager.GPS_PROVIDER; 
位置位置= locationManager.getLastKnownLocation（provider）; 
 updateWithNewLocation（location）; 
 
 locationManager.requestLocationUpdates（provider，2000，10，locationListener）; 
 
  

解决方案

可能由于 GPS提供商的不可用性。如果 Gps供应商或网络供应商已启用到位置设置，请要求此人检查设置。

I published my application to android market. I got error in my home page. Somebody wrote crash error. But this application is perfectly working in my real device. I added permission also. My error:

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.karthi.locationspeecher/com.android.locationspeecher.LocationSpeecher}: java.lang.IllegalArgumentException: provider==null
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1651)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667)
at android.app.ActivityThread.access$1500(ActivityThread.java:117)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:130)
at android.app.ActivityThread.main(ActivityThread.java:3687)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.IllegalArgumentException: provider==null
at android.location.LocationManager.getLastKnownLocation(LocationManager.java:1017)
at com.android.locationspeecher.LocationSpeecher.onCreate(LocationSpeecher.java:84)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615)
... 11 more

LocationManager:

 LocationManager locationManager; 
            String context = Context.LOCATION_SERVICE; 
            locationManager = (LocationManager)getSystemService(context); 

            Criteria crta = new Criteria(); 
            crta.setAccuracy(Criteria.ACCURACY_FINE); 
            crta.setAltitudeRequired(false); 
            crta.setBearingRequired(false); 
            crta.setCostAllowed(true); 
            crta.setPowerRequirement(Criteria.POWER_LOW); 
            String provider = locationManager.getBestProvider(crta, true); 

         // String provider = LocationManager.GPS_PROVIDER; 
            Location location = locationManager.getLastKnownLocation(provider); 
            updateWithNewLocation(location); 

            locationManager.requestLocationUpdates(provider, 2000, 10, locationListener); 
            } 

解决方案

You are getting this error most probably, due to un-availability of GPS Providers. Please ask the person to check settings if Gps Provider or Network Provider has been enabled into Location settings.

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