无法实例化活动componentinfo RunTimeException

-1

更新下面：无法实例化活动componentinfo RunTimeException

我有这个地图活动，当我点击一个按钮时开始。我在logcat中收到下面的内容。我已将活动添加到清单。我有onCreate内的setContentView。我也有清单中声明的权限。布局xml只是一个地图片段。任何人都可以看到任何可能导致此问题的原因？

logcat的：

10-09 23:16:10.516: W/dalvikvm(27281): threadid=1: thread exiting with uncaught exception (group=0x41955700) 
10-09 23:16:10.516: E/AndroidRuntime(27281): FATAL EXCEPTION: main 
10-09 23:16:10.516: E/AndroidRuntime(27281): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.indeeditis/com.indeeditis.FinderActivity}: java.lang.NullPointerException 
10-09 23:16:10.516: E/AndroidRuntime(27281): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2137) 
10-09 23:16:10.516: E/AndroidRuntime(27281): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261) 
10-09 23:16:10.516: E/AndroidRuntime(27281): at android.app.ActivityThread.access$600(ActivityThread.java:141) 
10-09 23:16:10.516: E/AndroidRuntime(27281): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256) 
10-09 23:16:10.516: E/AndroidRuntime(27281): at android.os.Handler.dispatchMessage(Handler.java:99) 
10-09 23:16:10.516: E/AndroidRuntime(27281): at android.os.Looper.loop(Looper.java:137) 
10-09 23:16:10.516: E/AndroidRuntime(27281): at android.app.ActivityThread.main(ActivityThread.java:5103) 
10-09 23:16:10.516: E/AndroidRuntime(27281): at java.lang.reflect.Method.invokeNative(Native Method) 
10-09 23:16:10.516: E/AndroidRuntime(27281): at java.lang.reflect.Method.invoke(Method.java:525) 
10-09 23:16:10.516: E/AndroidRuntime(27281): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737) 
10-09 23:16:10.516: E/AndroidRuntime(27281): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 
10-09 23:16:10.516: E/AndroidRuntime(27281): at dalvik.system.NativeStart.main(Native Method) 
10-09 23:16:10.516: E/AndroidRuntime(27281): Caused by: java.lang.NullPointerException 
10-09 23:16:10.516: E/AndroidRuntime(27281): at android.content.ContextWrapper.getPackageName(ContextWrapper.java:135) 
10-09 23:16:10.516: E/AndroidRuntime(27281): at android.location.GeocoderParams.<init>(GeocoderParams.java:50) 
10-09 23:16:10.516: E/AndroidRuntime(27281): at android.location.Geocoder.<init>(Geocoder.java:83) 
10-09 23:16:10.516: E/AndroidRuntime(27281): at android.location.Geocoder.<init>(Geocoder.java:95) 
10-09 23:16:10.516: E/AndroidRuntime(27281): at com.indeeditis.FinderActivity.<init>(FinderActivity.java:63) 
10-09 23:16:10.516: E/AndroidRuntime(27281): at java.lang.Class.newInstanceImpl(Native Method) 
10-09 23:16:10.516: E/AndroidRuntime(27281): at java.lang.Class.newInstance(Class.java:1130) 
10-09 23:16:10.516: E/AndroidRuntime(27281): at android.app.Instrumentation.newActivity(Instrumentation.java:1061) 
10-09 23:16:10.516: E/AndroidRuntime(27281): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2128) 
10-09 23:16:10.516: E/AndroidRuntime(27281): ... 11 more

活动：

public class FinderActivity extends Activity implements LocationListener { 

GoogleMap mMap; 
Location myLocation; 
EditText length; 
String lengthString; 
LocationManager locationmanager; 
double lati; 
double longi; 
String nameFirst1; 

    List<Address> address; 
    Geocoder coder = new Geocoder(this); 
private static final String TAG_ID = "id"; 
private static final String TAG_FIRSTNAME = "nameFirst"; 
private static final String TAG_LASTNAME = "nameLast"; 
private static final String TAG_EMAIL = "emailAddress"; 
private static final String TAG_ADDRESS = "streetAddress"; 
private static final String TAG_STATE = "state"; 
private static final String TAG_ZIPCODE ="zipCode"; 
private static final String TAG_COMPANY ="company"; 
private static final String TAG_OTHERCOMPANY ="companyTwo"; 

private static final String TAG_PHONE = "phone"; 
JSONArray contacts = null; 

private static class LocationData { 
    private double lat; 
    private double longitude; 
    private String name; 
    private String other; 

    public LocationData(double lat, double longitude, String name, String other) { 
     this.lat = lat; 
     this.longitude = longitude; 
     this.name = name; 
     this.other = other; 
    } 

    public void setLat(double lat) { 
     this.lat = lat; 
    } 
    public void setLongitude(double longitude) { 
     this.longitude = longitude; 
    } 
    public double getLat() { 
     return lat; 
    } 
    public double getLongitude() { 
     return longitude; 
    } 
    public void setName(String name) { 
      this.name = name; 
     } 
     public String getName() { 
     return name; 
     } 
     public String getOther() { 
     return other; 
      } 
    } 

@SuppressLint("NewApi") 
@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.maps); 
    mMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap(); 
    if (mMap!= null) { 

     mMap.setMapType(GoogleMap.MAP_TYPE_NORMAL); 
     mMap.setMyLocationEnabled(true); 
     mMap.animateCamera(CameraUpdateFactory.zoomBy(17)); 

     } 

    LocationManager locationmanager = (LocationManager) getSystemService(LOCATION_SERVICE); 
    Criteria cr = new Criteria(); 
    String provider = locationmanager.getBestProvider(cr, true); 
    Location location = locationmanager.getLastKnownLocation(provider); 
    locationmanager.requestLocationUpdates(provider, 20, 0, (LocationListener) this); 

    mMap.moveCamera(CameraUpdateFactory.newLatLng((new LatLng(location.getLatitude(), location.getLongitude())))); 

    new EndpointsTask().execute(FinderActivity.this); 

} 

public class EndpointsTask extends AsyncTask<Context, LocationData, Long> { 

    private List<LocationData> locationList = new ArrayList<LocationData>(); 

    public Long doInBackground(Context... contexts) { 

     Contactinfoendpoint.Builder endpointBuilder = new Contactinfoendpoint.Builder(
      AndroidHttp.newCompatibleTransport(), 
      new JacksonFactory(), 
      new HttpRequestInitializer() { 
      public void initialize(HttpRequest httpRequest) { } 
      }); 
    Contactinfoendpoint endpoint = CloudEndpointUtils.updateBuilder(
    endpointBuilder).build(); 

    try { 

    String apples = endpoint.listContactInfo().execute().toString(); 

    JSONObject jObject = new JSONObject(apples); 

    JSONArray jsonArr = jObject.getJSONArray("items"); 

    for(int i =0 ; i<jsonArr.length() ;i++){ 
     JSONObject jsonObj1 = jsonArr.getJSONObject(i); 


        // Storing each json item in variable 
        String id = jsonObj1.getString(TAG_ID); 
        String nameFirst1 = jsonObj1.getString(TAG_FIRSTNAME); 
        String nameLast1 = jsonObj1.getString(TAG_LASTNAME); 
        String emailAddress1 = jsonObj1.getString(TAG_EMAIL); 
        String streetAddress1 = jsonObj1.getString(TAG_ADDRESS); 
        String state1 = jsonObj1.getString(TAG_STATE); 
        String zip1 = jsonObj1.getString(TAG_ZIPCODE); 
        String phone1 = jsonObj1.getString(TAG_PHONE); 
        String company1 = jsonObj1.getString(TAG_COMPANY); 
        // String othercompany1 = jsonObj1.getString(TAG_OTHERCOMPANY); 
        String othercompany1 = String.valueOf(jsonObj1.optString(TAG_OTHERCOMPANY)); 

        //test to see if made it to string 
        Log.d("YOUR_TAG", "First Name: " + nameFirst1 + " Last Name: " + nameLast1); 

        Log.d("nlltag", apples); 

        String whereDeyAt = streetAddress1 + " " + zip1; 

         address = coder.getFromLocationName(whereDeyAt,5); 

         Address location1 = address.get(0); 

         // SET LAT LNG VALUES FOR MARKER POINT 

        double lati = location1.getLatitude(); 
         double longi = location1.getLongitude(); 

         String otherinfo; 
         if (othercompany1==null) { otherinfo = company1 + ", " + " " + phone1; 
         } 
         else {otherinfo = company1 + ", "+ othercompany1 + " " + phone1; } 

         Log.d("Location", "Location:" + lati + " " + longi); 
         LocationData data = new LocationData(lati, longi, nameFirst1 + " " + nameLast1,otherinfo); 

         locationList.add(data); 
         publishProgress(data); 

    } 

    } catch (IOException e) { 
    e.printStackTrace(); 
    } catch (JSONException e) { 
    // TODO Auto-generated catch block 
    e.printStackTrace(); 
} 
     return (long) 0; 

    } 

    public LocationData onProgressUpdate(LocationData data) { 


     return data; 
    } 

    protected void onPostExecute(Long result) { 
     for(LocationData data : locationList){ 
      mMap.addMarker(new MarkerOptions() 
      .position(new LatLng(data.getLat(), data.getLongitude())) 
      .title(data.getName()) 
      .snippet(data.getOther())); 
     } 

    } 

    }

清单：

<?xml version="1.0" encoding="utf-8" standalone="no"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="1" android:versionName="1.0" package="com.indeeditis"> 

<uses-sdk android:minSdkVersion="8" android:targetSdkVersion="18"/> 

<uses-permission android:name="android.permission.INTERNET"/> 
<permission android:name="com.indeeditis.permission.C2D_MESSAGE" android:protectionLevel="signature"/> 

<uses-permission android:name="com.indeeditis.permission.C2D_MESSAGE"/> 
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE"/> 
<uses-permission android:name="android.permission.WAKE_LOCK"/> 
<uses-permission android:name="android.permission.GET_ACCOUNTS"/> 
<uses-permission android:name="android.permission.USE_CREDENTIALS"/> 

<permission 
    android:name="com.indeeditis.MAPS_RECEIVE" 
    android:protectionLevel="signature"/>

<uses-permission android:name="android.permission.INTERNET"/> 
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/> 
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> 
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/> 

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

<uses-feature 
    android:glEsVersion="0x00020000" 
    android:required="true"/> 

<!-- for card.io card scanning --> 
<uses-permission android:name="android.permission.CAMERA" /> 
<uses-permission android:name="android.permission.VIBRATE" /> 

<!-- for most things, including card.io and paypal --> 
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> 
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" /> 


<!-- Camera features --> 
<uses-feature android:name="android.hardware.camera" android:required="false" /> 
<uses-feature android:name="android.hardware.camera.autofocus" android:required="false" /> 
<uses-feature android:name="android.hardware.camera.flash" android:required="false" /> 

<application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme"> 

    <activity android:name="StartScreen"><intent-filter> 
      <action android:name="android.intent.action.MAIN" /> 

      <category android:name="android.intent.category.LAUNCHER" /> 
     </intent-filter> 

    </activity> 

    <activity android:label="@string/app_name" android:name=".MainActivity"> 
     </activity> 
    <!-- 
    <receiver android:name="com.google.android.gcm.GCMBroadcastReceiver" android:permission="com.google.android.c2dm.permission.SEND"> 
     <intent-filter> 
      <action android:name="com.google.android.c2dm.intent.RECEIVE"/> 
      <category android:name="com.indeeditis"/> 
     </intent-filter> 
     <intent-filter> 
      <action android:name="com.google.android.c2dm.intent.REGISTRATION"/> 
      <category android:name="com.indeeditis"/> 
     </intent-filter> 
    </receiver> 

    --> 


    <activity android:label="@string/app_name" android:name=".FinderActivity"> </activity> 

    <service android:name="com.paypal.android.sdk.payments.PayPalService" android:exported="false"/> 

    <!-- paypal stuff --> 

<activity android:name="com.paypal.android.sdk.payments.PaymentActivity" /> 
<activity android:name="com.paypal.android.sdk.payments.LoginActivity" /> 
<activity android:name="com.paypal.android.sdk.payments.PaymentMethodActivity" /> 
<activity android:name="com.paypal.android.sdk.payments.PaymentConfirmActivity" /> 
<activity android:name="com.paypal.android.sdk.payments.PaymentCompletedActivity" /> 

<activity 
android:name="io.card.payment.CardIOActivity" 
android:configChanges="keyboardHidden|orientation" /> 
<activity android:name="io.card.payment.DataEntryActivity" /> 

<activity android:name="Maps"></activity> 

<meta-data 
android:name="com.google.android.maps.v2.API_KEY" 
android:value="AIzaSyBqLKpJk50JUSkm_LYO_p079oqUr3qwert"/> 

</application> 

</manifest>

** * ** * ***UPDATE* ** * ** * ** * ** * *

根据@JonSkeet我已经更改了 Geocoder coder = new Geocoder（this）;

到 Geocoder coder = new Geocoder（getApplicationContext（））;

的logcat的现在读取：

10-15 22:45:50.895: E/AndroidRuntime(2798): FATAL EXCEPTION: main 
10-15 22:45:50.895: E/AndroidRuntime(2798): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.indeeditis/com.indeeditis.FinderActivity}: java.lang.NullPointerException 
10-15 22:45:50.895: E/AndroidRuntime(2798):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2137) 
10-15 22:45:50.895: E/AndroidRuntime(2798):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261) 
10-15 22:45:50.895: E/AndroidRuntime(2798):  at android.app.ActivityThread.access$600(ActivityThread.java:141) 
10-15 22:45:50.895: E/AndroidRuntime(2798):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256) 
10-15 22:45:50.895: E/AndroidRuntime(2798):  at android.os.Handler.dispatchMessage(Handler.java:99) 
10-15 22:45:50.895: E/AndroidRuntime(2798):  at android.os.Looper.loop(Looper.java:137) 
10-15 22:45:50.895: E/AndroidRuntime(2798):  at android.app.ActivityThread.main(ActivityThread.java:5103) 
10-15 22:45:50.895: E/AndroidRuntime(2798):  at java.lang.reflect.Method.invokeNative(Native Method) 
10-15 22:45:50.895: E/AndroidRuntime(2798):  at java.lang.reflect.Method.invoke(Method.java:525) 
10-15 22:45:50.895: E/AndroidRuntime(2798):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737) 
10-15 22:45:50.895: E/AndroidRuntime(2798):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 
10-15 22:45:50.895: E/AndroidRuntime(2798):  at dalvik.system.NativeStart.main(Native Method) 
10-15 22:45:50.895: E/AndroidRuntime(2798): Caused by: java.lang.NullPointerException 
10-15 22:45:50.895: E/AndroidRuntime(2798):  at android.content.ContextWrapper.getApplicationContext(ContextWrapper.java:109) 
10-15 22:45:50.895: E/AndroidRuntime(2798):  at com.indeeditis.FinderActivity.<init>(FinderActivity.java:65) 
10-15 22:45:50.895: E/AndroidRuntime(2798):  at java.lang.Class.newInstanceImpl(Native Method) 
10-15 22:45:50.895: E/AndroidRuntime(2798):  at java.lang.Class.newInstance(Class.java:1130) 
10-15 22:45:50.895: E/AndroidRuntime(2798):  at android.app.Instrumentation.newActivity(Instrumentation.java:1061) 
10-15 22:45:50.895: E/AndroidRuntime(2798):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2128) 
10-15 22:45:50.895: E/AndroidRuntime(2798):  ... 11 more

我仍然得到一个空指针，但它不是对地址解析器现在。

来源

2013-10-10 johnsonjp34

'FinderActivity'上的第63行是什么？ – Emmanuel

@Emmanuel列表

地址; – johnsonjp34

你的课堂地址在哪里？在同一个活动文件中，或者你为此创建了另一个java文件？ –

那么我可以找出问题 - 但不是一个愉快的解决方案。

您的活动间接将子类别ContextWrapper重写为getPackageName。 Geocoder创建GeocoderParams与给定的上下文（this在你的情况），并依次询问其包名称的上下文。

不幸的是，ContextWrapper.getPackageName是通过调用getPackageName来实现的，它包装的环境 - 在你的情况为null。据我所知，这就是为什么你得到NullPointerException。

您可能自己覆盖getPackageName（在您的活动中）。这将消除这个特殊的例外，但它感觉像一个丑陋的解决方案。这看起来像使用这种方法永远是个问题 - 它是教程中推荐的方法吗？

综观其他一些示例代码，我想你可能只想改变这个：

Geocoder coder = new Geocoder(this);

到：

private final Geocoder coder = new Geocoder(getApplicationContext());

（该private final部分仅仅是一个很好的做法的事情，是不是修复的一部分）

编辑︰它现在看起来像getApplicationContext()是因为相同的原因失败。这是可能的（我不是Android开发者），只有在应用程序启动后才能使用任何特定于上下文的内容。你可能想使用它代替：

private Geocoder coder; 

@Override public void onStart() { 
    coder = new Geocoder(this); 
}

基本上，你只能创建一个Geocoder当你有一个正确初始化的情况下 - 所以这是调查的事情。

来源

2013-10-15 18:00:17

感谢您的关注。正如你所提到的那样，我改变了地理编码器，但是我仍然得到一个空指针，尽管这次没有提到地理编码器。我把logcat贴在最底部。谢谢 – johnsonjp34

@ coconuts4eva：好吧，看起来它甚至无法获取应用程序上下文。（只要看一下堆栈跟踪 - 至关重要的是你应该能够阅读这个）。你可能只应该在活动开始时对它进行初始化 - 然后你可能会有更多的上下文。 –

-1

包名看起来可疑com.indeeditis/com.indeeditis.FinderActivity。包名称中不能有斜杠。再次检查您的AndroidManifest.xml。

来源

2013-10-10 14:01:20 Egis

我没有看到任何问题。我认为这只是logcat写入的方式，软件包基础和整个软件包+活动。 – johnsonjp34

这被称为ComponentName，它非常好。 – JoxTraex

对不起，我的错误 – Egis

无法实例化活动componentinfo RunTimeException

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