Konnte die Methode "startSearch (View)" in einem Elternteil oder Vorfahren nicht finden Kontext

Question

ich versuche, eine Position zu finden, mit der Google Maps API. Das Xml zeigt die Map und oben einen EditText-View + Button.

Das ist der XML-Datei: google_maps_layout

<RelativeLayout xmlns:map="http://schemas.android.com/apk/res-auto" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    xmlns:android="http://schemas.android.com/apk/res/android"> 


    <EditText 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:inputType="textPersonName" 
     android:ems="13" 
     android:id="@+id/editText_locationSearch" 
     android:background="#ffffff" 
     android:layout_alignBottom="@+id/button_startSearchLocation" 

     android:layout_alignTop="@+id/button_startSearchLocation" 
     android:layout_alignParentStart="true" 
     android:hint="Ort einfügen" 
     android:textColorHint="#000000" 
     android:textColor="#000000" 
     /> 

    <fragment 
     android:id="@+id/map" 
     android:name="com.google.android.gms.maps.SupportMapFragment" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     tools:context="group14.event_log.MapsActivity" 
     android:layout_below="@+id/button_startSearchLocation" 
     android:layout_alignParentStart="true" /> 

    <Button 
     android:text="Suche" 
     android:layout_height="wrap_content" 
     android:id="@+id/button_startSearchLocation" 
     android:layout_width="wrap_content" 
     android:layout_alignParentTop="true" 
     android:layout_alignParentEnd="true" 
     android:onClick="startSearch" 
     /> 

</RelativeLayout> 

können Sie sehen, dass es eine onClick Methode für Button_startSearchLocation ist. I definiertem diese Methode in Maps.Activity.java

private void startSearch(View view){ 
    List<android.location.Address> addressList = null; 
    EditText location_editText = (EditText) findViewById(R.id.editText_locationSearch); 
    String location = location_editText.getText().toString(); 

    if(location != null || !location.equals("")){ 
     Geocoder geocoder = new Geocoder(this); 
     try { 
      addressList = geocoder.getFromLocationName(location , 1); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } 
     android.location.Address address = addressList.get(0); 
     LatLng lating = new LatLng(address.getLatitude(), address.getLongitude()); 
     mMap.addMarker(new MarkerOptions().position(lating).title("Marker")); 
     mMap.moveCamera(CameraUpdateFactory.newLatLng(lating)); 
    } 
} 

Es ist auch die richtige XML-Datei:

public class MapsActivity extends FragmentActivity implements OnMapReadyCallback { 

private GoogleMap mMap; 

@RequiresApi(api = Build.VERSION_CODES.M) 
@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.google_maps_layout); 
    // Obtain the SupportMapFragment and get notified when the map is ready to be used. 
    SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager() 
      .findFragmentById(R.id.map); 
    mapFragment.getMapAsync(this); 
    checkGPS(mMap); 

} 

Wenn ich die Anwendung ausführen bekomme ich diesen Fehler:

java.lang.IllegalStateException: Could not find method startSearch(View) in 
a parent or ancestor Context for android:onClick attribute defined on 
view class android.widget.Button with id 'button_startSearchLocation' 

I möchte wissen, warum die xml-Datei die Methode nicht finden kann?

• compileSdkVersion 24

• buildToolsVersion "25.0.0"

• minSdkVersion 19

• targetSdkVersion 24

Answer 1

Ok SRY Typen. Dummer Fehler. Die Methode sollte öffentlich sein.

**public** void startSearch(View view){ 
List<android.location.Address> addressList = null; 
EditText location_editText = (EditText) findViewById(R.id.editText_locationSearch); 
String location = location_editText.getText().toString(); 

if(location != null || !location.equals("")){ 
    Geocoder geocoder = new Geocoder(this); 
    try { 
     addressList = geocoder.getFromLocationName(location , 1); 
    } catch (IOException e) { 
     e.printStackTrace(); 
    } 
    android.location.Address address = addressList.get(0); 
    LatLng lating = new LatLng(address.getLatitude(), address.getLongitude()); 
    mMap.addMarker(new MarkerOptions().position(lating).title("Marker")); 
    mMap.moveCamera(CameraUpdateFactory.newLatLng(lating)); 
} 

}