Android示例代碼崩潰

我在this地址中找到了Google Maps教程。我下載了該項目並更改了清單文件中的API授權代碼。我連接了我的設備並試圖運行該應用程序，並崩潰。Android示例代碼崩潰

我加入了Google Play Services Library，我選擇了Google API（2.2）。

Here是我的logcat。什麼會導致這個問題？

非常感謝您。

編輯：

這是我MainActivity.java文件：

package in.wptrafficanalyzer.locationingooglemapv2; 

import android.app.Dialog; 
import android.location.Criteria; 
import android.location.Location; 
import android.location.LocationListener; 
import android.location.LocationManager; 
import android.os.Bundle; 
import android.support.v4.app.FragmentActivity; 
import android.view.Menu; 
import android.widget.TextView; 

import com.google.android.gms.common.ConnectionResult; 
import com.google.android.gms.common.GooglePlayServicesUtil; 
import com.google.android.gms.maps.CameraUpdateFactory; 
import com.google.android.gms.maps.GoogleMap; 
import com.google.android.gms.maps.SupportMapFragment; 
import com.google.android.gms.maps.model.LatLng; 

public class MainActivity extends FragmentActivity implements LocationListener { 

    GoogleMap googleMap; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     // Getting Google Play availability status 
     int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(getBaseContext()); 

     // Showing status 
     if(status!=ConnectionResult.SUCCESS){ // Google Play Services are not available 

      int requestCode = 10; 
      Dialog dialog = GooglePlayServicesUtil.getErrorDialog(status, this, requestCode); 
      dialog.show(); 

     }else { // Google Play Services are available 

      // Getting reference to the SupportMapFragment of activity_main.xml 
      SupportMapFragment fm = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map); 

      // Getting GoogleMap object from the fragment 
      googleMap = fm.getMap(); 

      // Enabling MyLocation Layer of Google Map 
      googleMap.setMyLocationEnabled(true);    


      // Getting LocationManager object from System Service LOCATION_SERVICE 
      LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE); 

      // Creating a criteria object to retrieve provider 
      Criteria criteria = new Criteria(); 

      // Getting the name of the best provider 
      String provider = locationManager.getBestProvider(criteria, true); 

      // Getting Current Location 
      Location location = locationManager.getLastKnownLocation(provider); 

      if(location!=null){ 
        onLocationChanged(location); 
      } 

      locationManager.requestLocationUpdates(provider, 20000, 0, this); 
     } 

    } 


    @Override 
    public void onLocationChanged(Location location) { 

     TextView tvLocation = (TextView) findViewById(R.id.tv_location); 

     // Getting latitude of the current location 
     double latitude = location.getLatitude(); 

     // Getting longitude of the current location 
     double longitude = location.getLongitude();  

     // Creating a LatLng object for the current location 
     LatLng latLng = new LatLng(latitude, longitude); 

     // Showing the current location in Google Map 
     googleMap.moveCamera(CameraUpdateFactory.newLatLng(latLng)); 

     // Zoom in the Google Map 
     googleMap.animateCamera(CameraUpdateFactory.zoomTo(15)); 

     // Setting latitude and longitude in the TextView tv_location 
     tvLocation.setText("Latitude:" + latitude + ", Longitude:"+ longitude);  

    } 

    @Override 
    public void onProviderDisabled(String provider) { 
     // TODO Auto-generated method stub  
    } 

    @Override 
    public void onProviderEnabled(String provider) { 
     // TODO Auto-generated method stub  
    } 

    @Override 
    public void onStatusChanged(String provider, int status, Bundle extras) { 
     // TODO Auto-generated method stub  
    } 

    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate the menu; this adds items to the action bar if it is present. 
     getMenuInflater().inflate(R.menu.activity_main, menu); 
     return true; 
    } 
}

這是我的logcat：

03-30 21:18:24.042: D/dalvikvm(18745): DexOpt: couldn't find field Landroid/content/res/Configuration;.smallestScreenWidthDp 
03-30 21:18:24.042: W/dalvikvm(18745): VFY: unable to resolve instance field 23 
03-30 21:18:24.042: D/dalvikvm(18745): VFY: replacing opcode 0x52 at 0x0012 
03-30 21:18:24.042: D/dalvikvm(18745): VFY: dead code 0x0014-0018 in Lcom/google/android/gms/common/GooglePlayServicesUtil;.b (Landroid/content/res/Resources;)Z 
03-30 21:18:24.102: W/dalvikvm(18745): Unable to resolve superclass of Lmaps/p/s; (425) 
03-30 21:18:24.102: W/dalvikvm(18745): Link of class 'Lmaps/p/s;' failed 
03-30 21:18:24.102: W/dalvikvm(18745): Unable to resolve superclass of Lmaps/y/bo; (3818) 
03-30 21:18:24.102: W/dalvikvm(18745): Link of class 'Lmaps/y/bo;' failed 
03-30 21:18:24.102: W/dalvikvm(18745): Unable to resolve superclass of Lmaps/i/k; (4206) 
03-30 21:18:24.102: W/dalvikvm(18745): Link of class 'Lmaps/i/k;' failed 
03-30 21:18:24.102: E/dalvikvm(18745): Could not find class 'maps.i.k', referenced from method maps.z.ag.a 
03-30 21:18:24.102: W/dalvikvm(18745): VFY: unable to resolve new-instance 3538 (Lmaps/i/k;) in Lmaps/z/ag; 
03-30 21:18:24.102: D/dalvikvm(18745): VFY: replacing opcode 0x22 at 0x006d 
03-30 21:18:24.102: D/dalvikvm(18745): VFY: dead code 0x006f-007f in Lmaps/z/ag;.a (Landroid/view/LayoutInflater;Lcom/google/android/gms/maps/GoogleMapOptions;ZLjava/lang/String;)Lmaps/z/ag; 
03-30 21:18:24.252: D/dalvikvm(18745): GC_EXTERNAL_ALLOC freed 836K, 49% free 3313K/6471K, external 2458K/2773K, paused 26ms 
03-30 21:18:24.272: E/Google Maps Android API(18745): Failed to load map. Could not contact Google servers. 
03-30 21:18:24.292: D/AndroidRuntime(18745): Shutting down VM 
03-30 21:18:24.292: W/dalvikvm(18745): threadid=1: thread exiting with uncaught exception (group=0x40018560) 
03-30 21:18:24.292: E/AndroidRuntime(18745): FATAL EXCEPTION: main 
03-30 21:18:24.292: E/AndroidRuntime(18745): java.lang.RuntimeException: Unable to start activity ComponentInfo{in.wptrafficanalyzer.locationingooglemapv2/in.wptrafficanalyzer.locationingooglemapv2.MainActivity}: java.lang.IllegalArgumentException: provider==null 
03-30 21:18:24.292: E/AndroidRuntime(18745): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1696) 
03-30 21:18:24.292: E/AndroidRuntime(18745): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1721) 
03-30 21:18:24.292: E/AndroidRuntime(18745): at android.app.ActivityThread.access$1500(ActivityThread.java:124) 
03-30 21:18:24.292: E/AndroidRuntime(18745): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:968) 
03-30 21:18:24.292: E/AndroidRuntime(18745): at android.os.Handler.dispatchMessage(Handler.java:99) 
03-30 21:18:24.292: E/AndroidRuntime(18745): at android.os.Looper.loop(Looper.java:130) 
03-30 21:18:24.292: E/AndroidRuntime(18745): at android.app.ActivityThread.main(ActivityThread.java:3844) 
03-30 21:18:24.292: E/AndroidRuntime(18745): at java.lang.reflect.Method.invokeNative(Native Method) 
03-30 21:18:24.292: E/AndroidRuntime(18745): at java.lang.reflect.Method.invoke(Method.java:507) 
03-30 21:18:24.292: E/AndroidRuntime(18745): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 
03-30 21:18:24.292: E/AndroidRuntime(18745): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 
03-30 21:18:24.292: E/AndroidRuntime(18745): at dalvik.system.NativeStart.main(Native Method) 
03-30 21:18:24.292: E/AndroidRuntime(18745): Caused by: java.lang.IllegalArgumentException: provider==null 
03-30 21:18:24.292: E/AndroidRuntime(18745): at android.location.LocationManager.getLastKnownLocation(LocationManager.java:1017) 
03-30 21:18:24.292: E/AndroidRuntime(18745): at in.wptrafficanalyzer.locationingooglemapv2.MainActivity.onCreate(MainActivity.java:61) 
03-30 21:18:24.292: E/AndroidRuntime(18745): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 
03-30 21:18:24.292: E/AndroidRuntime(18745): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1660) 
03-30 21:18:24.292: E/AndroidRuntime(18745): ... 11 more 
03-30 21:18:27.082: I/Process(18745): Sending signal. PID: 18745 SIG: 9 
03-30 21:20:10.565: D/dalvikvm(18826): DexOpt: couldn't find field Landroid/content/res/Configuration;.smallestScreenWidthDp 
03-30 21:20:10.565: W/dalvikvm(18826): VFY: unable to resolve instance field 23 
03-30 21:20:10.565: D/dalvikvm(18826): VFY: replacing opcode 0x52 at 0x0012 
03-30 21:20:10.565: D/dalvikvm(18826): VFY: dead code 0x0014-0018 in Lcom/google/android/gms/common/GooglePlayServicesUtil;.b (Landroid/content/res/Resources;)Z 
03-30 21:20:10.625: W/dalvikvm(18826): Unable to resolve superclass of Lmaps/p/s; (425) 
03-30 21:20:10.625: W/dalvikvm(18826): Link of class 'Lmaps/p/s;' failed 
03-30 21:20:10.625: W/dalvikvm(18826): Unable to resolve superclass of Lmaps/y/bo; (3818) 
03-30 21:20:10.625: W/dalvikvm(18826): Link of class 'Lmaps/y/bo;' failed 
03-30 21:20:10.625: W/dalvikvm(18826): Unable to resolve superclass of Lmaps/i/k; (4206) 
03-30 21:20:10.625: W/dalvikvm(18826): Link of class 'Lmaps/i/k;' failed 
03-30 21:20:10.625: E/dalvikvm(18826): Could not find class 'maps.i.k', referenced from method maps.z.ag.a 
03-30 21:20:10.625: W/dalvikvm(18826): VFY: unable to resolve new-instance 3538 (Lmaps/i/k;) in Lmaps/z/ag; 
03-30 21:20:10.625: D/dalvikvm(18826): VFY: replacing opcode 0x22 at 0x006d 
03-30 21:20:10.635: D/dalvikvm(18826): VFY: dead code 0x006f-007f in Lmaps/z/ag;.a (Landroid/view/LayoutInflater;Lcom/google/android/gms/maps/GoogleMapOptions;ZLjava/lang/String;)Lmaps/z/ag; 
03-30 21:20:10.762: D/dalvikvm(18826): GC_EXTERNAL_ALLOC freed 835K, 49% free 3313K/6471K, external 2458K/2773K, paused 25ms 
03-30 21:20:10.782: E/Google Maps Android API(18826): Failed to load map. Could not contact Google servers. 
03-30 21:20:10.792: D/AndroidRuntime(18826): Shutting down VM 
03-30 21:20:10.792: W/dalvikvm(18826): threadid=1: thread exiting with uncaught exception (group=0x40018560) 
03-30 21:20:10.792: E/AndroidRuntime(18826): FATAL EXCEPTION: main 
03-30 21:20:10.792: E/AndroidRuntime(18826): java.lang.RuntimeException: Unable to start activity ComponentInfo{in.wptrafficanalyzer.locationingooglemapv2/in.wptrafficanalyzer.locationingooglemapv2.MainActivity}: java.lang.IllegalArgumentException: provider==null 
03-30 21:20:10.792: E/AndroidRuntime(18826): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1696) 
03-30 21:20:10.792: E/AndroidRuntime(18826): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1721) 
03-30 21:20:10.792: E/AndroidRuntime(18826): at android.app.ActivityThread.access$1500(ActivityThread.java:124) 
03-30 21:20:10.792: E/AndroidRuntime(18826): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:968) 
03-30 21:20:10.792: E/AndroidRuntime(18826): at android.os.Handler.dispatchMessage(Handler.java:99) 
03-30 21:20:10.792: E/AndroidRuntime(18826): at android.os.Looper.loop(Looper.java:130) 
03-30 21:20:10.792: E/AndroidRuntime(18826): at android.app.ActivityThread.main(ActivityThread.java:3844) 
03-30 21:20:10.792: E/AndroidRuntime(18826): at java.lang.reflect.Method.invokeNative(Native Method) 
03-30 21:20:10.792: E/AndroidRuntime(18826): at java.lang.reflect.Method.invoke(Method.java:507) 
03-30 21:20:10.792: E/AndroidRuntime(18826): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 
03-30 21:20:10.792: E/AndroidRuntime(18826): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 
03-30 21:20:10.792: E/AndroidRuntime(18826): at dalvik.system.NativeStart.main(Native Method) 
03-30 21:20:10.792: E/AndroidRuntime(18826): Caused by: java.lang.IllegalArgumentException: provider==null 
03-30 21:20:10.792: E/AndroidRuntime(18826): at android.location.LocationManager.getLastKnownLocation(LocationManager.java:1017) 
03-30 21:20:10.792: E/AndroidRuntime(18826): at in.wptrafficanalyzer.locationingooglemapv2.MainActivity.onCreate(MainActivity.java:61) 
03-30 21:20:10.792: E/AndroidRuntime(18826): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 
03-30 21:20:10.792: E/AndroidRuntime(18826): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1660) 
03-30 21:20:10.792: E/AndroidRuntime(18826): ... 11 more 
03-30 21:21:04.912: D/dalvikvm(18897): DexOpt: couldn't find field Landroid/content/res/Configuration;.smallestScreenWidthDp 
03-30 21:21:04.932: W/dalvikvm(18897): VFY: unable to resolve instance field 23 
03-30 21:21:04.932: D/dalvikvm(18897): VFY: replacing opcode 0x52 at 0x0012 
03-30 21:21:04.932: D/dalvikvm(18897): VFY: dead code 0x0014-0018 in Lcom/google/android/gms/common/GooglePlayServicesUtil;.b (Landroid/content/res/Resources;)Z 
03-30 21:21:05.012: W/dalvikvm(18897): Unable to resolve superclass of Lmaps/p/s; (425) 
03-30 21:21:05.012: W/dalvikvm(18897): Link of class 'Lmaps/p/s;' failed 
03-30 21:21:05.012: W/dalvikvm(18897): Unable to resolve superclass of Lmaps/y/bo; (3818) 
03-30 21:21:05.012: W/dalvikvm(18897): Link of class 'Lmaps/y/bo;' failed 
03-30 21:21:05.012: W/dalvikvm(18897): Unable to resolve superclass of Lmaps/i/k; (4206) 
03-30 21:21:05.012: W/dalvikvm(18897): Link of class 'Lmaps/i/k;' failed 
03-30 21:21:05.012: E/dalvikvm(18897): Could not find class 'maps.i.k', referenced from method maps.z.ag.a 
03-30 21:21:05.012: W/dalvikvm(18897): VFY: unable to resolve new-instance 3538 (Lmaps/i/k;) in Lmaps/z/ag; 
03-30 21:21:05.012: D/dalvikvm(18897): VFY: replacing opcode 0x22 at 0x006d 
03-30 21:21:05.022: D/dalvikvm(18897): VFY: dead code 0x006f-007f in Lmaps/z/ag;.a (Landroid/view/LayoutInflater;Lcom/google/android/gms/maps/GoogleMapOptions;ZLjava/lang/String;)Lmaps/z/ag; 
03-30 21:21:05.162: D/dalvikvm(18897): GC_EXTERNAL_ALLOC freed 839K, 49% free 3313K/6471K, external 2458K/2773K, paused 26ms 
03-30 21:21:05.182: E/Google Maps Android API(18897): Failed to load map. Could not contact Google servers. 
03-30 21:21:05.202: D/AndroidRuntime(18897): Shutting down VM 
03-30 21:21:05.202: W/dalvikvm(18897): threadid=1: thread exiting with uncaught exception (group=0x40018560) 
03-30 21:21:05.202: E/AndroidRuntime(18897): FATAL EXCEPTION: main 
03-30 21:21:05.202: E/AndroidRuntime(18897): java.lang.RuntimeException: Unable to start activity ComponentInfo{in.wptrafficanalyzer.locationingooglemapv2/in.wptrafficanalyzer.locationingooglemapv2.MainActivity}: java.lang.IllegalArgumentException: provider==null 
03-30 21:21:05.202: E/AndroidRuntime(18897): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1696) 
03-30 21:21:05.202: E/AndroidRuntime(18897): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1721) 
03-30 21:21:05.202: E/AndroidRuntime(18897): at android.app.ActivityThread.access$1500(ActivityThread.java:124) 
03-30 21:21:05.202: E/AndroidRuntime(18897): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:968) 
03-30 21:21:05.202: E/AndroidRuntime(18897): at android.os.Handler.dispatchMessage(Handler.java:99) 
03-30 21:21:05.202: E/AndroidRuntime(18897): at android.os.Looper.loop(Looper.java:130) 
03-30 21:21:05.202: E/AndroidRuntime(18897): at android.app.ActivityThread.main(ActivityThread.java:3844) 
03-30 21:21:05.202: E/AndroidRuntime(18897): at java.lang.reflect.Method.invokeNative(Native Method) 
03-30 21:21:05.202: E/AndroidRuntime(18897): at java.lang.reflect.Method.invoke(Method.java:507) 
03-30 21:21:05.202: E/AndroidRuntime(18897): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 
03-30 21:21:05.202: E/AndroidRuntime(18897): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 
03-30 21:21:05.202: E/AndroidRuntime(18897): at dalvik.system.NativeStart.main(Native Method) 
03-30 21:21:05.202: E/AndroidRuntime(18897): Caused by: java.lang.IllegalArgumentException: provider==null 
03-30 21:21:05.202: E/AndroidRuntime(18897): at android.location.LocationManager.getLastKnownLocation(LocationManager.java:1017) 
03-30 21:21:05.202: E/AndroidRuntime(18897): at in.wptrafficanalyzer.locationingooglemapv2.MainActivity.onCreate(MainActivity.java:61) 
03-30 21:21:05.202: E/AndroidRuntime(18897): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 
03-30 21:21:05.202: E/AndroidRuntime(18897): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1660) 
03-30 21:21:05.202: E/AndroidRuntime(18897): ... 11 more 
03-30 21:21:08.012: I/Process(18897): Sending signal. PID: 18897 SIG: 9 
03-30 21:23:35.162: D/dalvikvm(18968): DexOpt: couldn't find field Landroid/content/res/Configuration;.smallestScreenWidthDp 
03-30 21:23:35.182: W/dalvikvm(18968): VFY: unable to resolve instance field 23 
03-30 21:23:35.182: D/dalvikvm(18968): VFY: replacing opcode 0x52 at 0x0012 
03-30 21:23:35.182: D/dalvikvm(18968): VFY: dead code 0x0014-0018 in Lcom/google/android/gms/common/GooglePlayServicesUtil;.b (Landroid/content/res/Resources;)Z 
03-30 21:23:35.322: W/dalvikvm(18968): Unable to resolve superclass of Lmaps/p/s; (425) 
03-30 21:23:35.322: W/dalvikvm(18968): Link of class 'Lmaps/p/s;' failed 
03-30 21:23:35.322: W/dalvikvm(18968): Unable to resolve superclass of Lmaps/y/bo; (3818) 
03-30 21:23:35.322: W/dalvikvm(18968): Link of class 'Lmaps/y/bo;' failed 
03-30 21:23:35.322: W/dalvikvm(18968): Unable to resolve superclass of Lmaps/i/k; (4206) 
03-30 21:23:35.322: W/dalvikvm(18968): Link of class 'Lmaps/i/k;' failed 
03-30 21:23:35.322: E/dalvikvm(18968): Could not find class 'maps.i.k', referenced from method maps.z.ag.a 
03-30 21:23:35.322: W/dalvikvm(18968): VFY: unable to resolve new-instance 3538 (Lmaps/i/k;) in Lmaps/z/ag; 
03-30 21:23:35.322: D/dalvikvm(18968): VFY: replacing opcode 0x22 at 0x006d 
03-30 21:23:35.332: D/dalvikvm(18968): VFY: dead code 0x006f-007f in Lmaps/z/ag;.a (Landroid/view/LayoutInflater;Lcom/google/android/gms/maps/GoogleMapOptions;ZLjava/lang/String;)Lmaps/z/ag; 
03-30 21:23:35.532: D/dalvikvm(18968): GC_EXTERNAL_ALLOC freed 839K, 49% free 3313K/6471K, external 2458K/2773K, paused 27ms 
03-30 21:23:35.552: E/Google Maps Android API(18968): Failed to load map. Could not contact Google servers. 
03-30 21:23:35.572: D/AndroidRuntime(18968): Shutting down VM 
03-30 21:23:35.572: W/dalvikvm(18968): threadid=1: thread exiting with uncaught exception (group=0x40018560) 
03-30 21:23:35.572: E/AndroidRuntime(18968): FATAL EXCEPTION: main 
03-30 21:23:35.572: E/AndroidRuntime(18968): java.lang.RuntimeException: Unable to start activity ComponentInfo{in.wptrafficanalyzer.locationingooglemapv2/in.wptrafficanalyzer.locationingooglemapv2.MainActivity}: java.lang.IllegalArgumentException: provider==null 
03-30 21:23:35.572: E/AndroidRuntime(18968): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1696) 
03-30 21:23:35.572: E/AndroidRuntime(18968): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1721) 
03-30 21:23:35.572: E/AndroidRuntime(18968): at android.app.ActivityThread.access$1500(ActivityThread.java:124) 
03-30 21:23:35.572: E/AndroidRuntime(18968): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:968) 
03-30 21:23:35.572: E/AndroidRuntime(18968): at android.os.Handler.dispatchMessage(Handler.java:99) 
03-30 21:23:35.572: E/AndroidRuntime(18968): at android.os.Looper.loop(Looper.java:130) 
03-30 21:23:35.572: E/AndroidRuntime(18968): at android.app.ActivityThread.main(ActivityThread.java:3844) 
03-30 21:23:35.572: E/AndroidRuntime(18968): at java.lang.reflect.Method.invokeNative(Native Method) 
03-30 21:23:35.572: E/AndroidRuntime(18968): at java.lang.reflect.Method.invoke(Method.java:507) 
03-30 21:23:35.572: E/AndroidRuntime(18968): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 
03-30 21:23:35.572: E/AndroidRuntime(18968): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 
03-30 21:23:35.572: E/AndroidRuntime(18968): at dalvik.system.NativeStart.main(Native Method) 
03-30 21:23:35.572: E/AndroidRuntime(18968): Caused by: java.lang.IllegalArgumentException: provider==null 
03-30 21:23:35.572: E/AndroidRuntime(18968): at android.location.LocationManager.getLastKnownLocation(LocationManager.java:1017) 
03-30 21:23:35.572: E/AndroidRuntime(18968): at in.wptrafficanalyzer.locationingooglemapv2.MainActivity.onCreate(MainActivity.java:61) 
03-30 21:23:35.572: E/AndroidRuntime(18968): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 
03-30 21:23:35.572: E/AndroidRuntime(18968): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1660) 
03-30 21:23:35.572: E/AndroidRuntime(18968): ... 11 more

來源

2013-03-30 citizen_of_noobville

請將您的logcat發佈在問題中，而不是鏈接。 – Simon

發佈相關代碼和logcat – Raghunandan

'MainActivity'的第61行是什麼？ – Tushar

String provider = locationManager.getBestProvider(criteria, true);

在此行中，getBestProvider將返回null 。這可能是因爲用戶禁用了所有可能的providers。您需要處理這種情況，如果provider非空，則只需致電getLastKnownLocation。

來源

2013-03-30 19:46:28 Tushar

哇。非常感謝你。你讓我真的很開心。再一次非常感謝你。保重並祝你有美好的一天。 –

以下行您的代碼

// Creating a criteria object to retrieve provider 
     Criteria criteria = new Criteria();

從文檔它說，有關默認構造函數是繼創建標準，

Constructs a new Criteria object. The new object will have no requirements on accuracy, power, or response time; will not require altitude, speed, or bearing; and will not allow monetary cost.

並在下一行你所要求的供應商，其最佳匹配的要求以上

String provider = locationManager.getBestProvider(criteria, true);

我猜他們沒有這樣的提供者exis t所以你的提供者是空的，最終你試圖這樣做

Location location = locationManager.getLastKnownLocation(null);

這就是你的代碼崩潰的地方。

來源

2013-03-30 19:58:42 minhaz

Android示例代碼崩潰

回答

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