Геокодирование Android. Получение исключения

Question

Я хочу получить полный адрес с геокодированием, и я предоставляю конкретное положение в виде LatLng. Но когда я запускаю код, я получаю исключение в журнале.

Panic.java

общественного класса Panic расширяет активность {

String address; 
TextView result; 
LatLng position; 


protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.panic); 

    result = (TextView) findViewById(R.id.result); 

    ActionBar action_bar = getActionBar(); 
    action_bar.setDisplayHomeAsUpEnabled(true); 

    position = new LatLng(17.6913913,75.9234617); 

    Toast.makeText(this, position.latitude + "," + position.longitude, 1).show(); 

    String FullAddress = getFullAddress(); 

    result.setText(FullAddress); 

} 

private String getFullAddress() { 

    Geocoder gc = new Geocoder(this); 

    List<Address> list = null; 
    try { 
     list = gc.getFromLocation(position.latitude, position.longitude, 10); 
    } catch (IOException e) { 
     e.printStackTrace(); 
    } 

    String add_1 = list.get(0).getAddressLine(0); 
    String add_2 = list.get(0).getAddressLine(1); 
    String add_3 = list.get(0).getAddressLine(2); 

    return add_1 + ", " + add_2 + ", " + add_3 + "."; 
} 

@Override 
public boolean onOptionsItemSelected(MenuItem item) { 
    int id = item.getItemId(); 
    if (id == android.R.id.home) { 
     flag=1; 
     this.finish(); 
     return true; 
    } 
    return super.onOptionsItemSelected(item); 
} 

}

LogCat

04-04 09:18:42.120: E/AndroidRuntime(30593): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.beproject.ourway/com.beproject.ourway.Panic}: java.lang.NullPointerException 
04-04 09:18:42.120: E/AndroidRuntime(30593): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2184) 
04-04 09:18:42.120: E/AndroidRuntime(30593): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2211) 
04-04 09:18:42.120: E/AndroidRuntime(30593): at android.app.ActivityThread.access$600(ActivityThread.java:149) 
04-04 09:18:42.120: E/AndroidRuntime(30593): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1300) 
04-04 09:18:42.120: E/AndroidRuntime(30593): at android.os.Handler.dispatchMessage(Handler.java:99) 
04-04 09:18:42.120: E/AndroidRuntime(30593): at android.os.Looper.loop(Looper.java:153) 
04-04 09:18:42.120: E/AndroidRuntime(30593): at android.app.ActivityThread.main(ActivityThread.java:4987) 
04-04 09:18:42.120: E/AndroidRuntime(30593): at java.lang.reflect.Method.invokeNative(Native Method) 
04-04 09:18:42.120: E/AndroidRuntime(30593): at java.lang.reflect.Method.invoke(Method.java:511) 
04-04 09:18:42.120: E/AndroidRuntime(30593): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:821) 
04-04 09:18:42.120: E/AndroidRuntime(30593): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:584) 
04-04 09:18:42.120: E/AndroidRuntime(30593): at dalvik.system.NativeStart.main(Native Method) 
04-04 09:18:42.120: E/AndroidRuntime(30593): Caused by: java.lang.NullPointerException 
04-04 09:18:42.120: E/AndroidRuntime(30593): at com.beproject.ourway.Panic.onCreate(Panic.java:45) 
04-04 09:18:42.120: E/AndroidRuntime(30593): at android.app.Activity.performCreate(Activity.java:5020) 
04-04 09:18:42.120: E/AndroidRuntime(30593): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080) 
04-04 09:18:42.120: E/AndroidRuntime(30593): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2148) 
04-04 09:18:42.120: E/AndroidRuntime(30593): ... 11 more 
04-04 09:18:42.131: I/System.out(30593): [socket][2:53181] exception 
04-04 09:18:42.131: I/System.out(30593): [CDS]close[53181] 
04-04 09:18:42.132: I/System.out(30593): [socket][2] connection clients4.google.com/216.58.220.14:443;LocalPort=45123(0) 
04-04 09:18:42.133: I/System.out(30593): [CDS]connect[clients4.google.com/216.58.220.14:443] tm:90 
04-04 09:18:42.134: D/Posix(30593): [Posix_connect Debug]Process com.beproject.ourway :443 
04-04 09:18:42.218: I/System.out(30593): [socket][/192.168.1.4:45123] connected 
04-04 09:18:42.218: I/System.out(30593): [CDS]rx timeout:0 

Answer 1

чек здесь, если getFullAddress возвращает Nul л

String FullAddress = getFullAddress();

если она возвращает Null вы можете получить NullPointerException