Java 如何从navegation抽屉调用FragmentActivitie
我想在第一种情况下显示一个映射,这是调用映射片段时抽屉布局的一部分。这让我犯了错误,我不知道怎么做Java 如何从navegation抽屉调用FragmentActivitie,java,android,google-maps-api-3,drawerlayout,Java,Android,Google Maps Api 3,Drawerlayout,我想在第一种情况下显示一个映射,这是调用映射片段时抽屉布局的一部分。这让我犯了错误,我不知道怎么做 @覆盖 已选择NavigationDrawerItems上的公共无效(整数位置){ FragmentManager FragmentManager=getFragmentManager(); 片段=空; 开关(位置){ 案例0: fragment=new MapsActivity();//此行显示错误 打破 案例1: //实施 打破 案例2: //实施 打破 } fragmentManager.
@覆盖
已选择NavigationDrawerItems上的公共无效(整数位置){
FragmentManager FragmentManager=getFragmentManager();
片段=空;
开关(位置){
案例0:
fragment=new MapsActivity();//此行显示错误
打破
案例1:
//实施
打破
案例2:
//实施
打破
}
fragmentManager.beginTransaction()
.替换(R.id.容器,碎片)
.commit();
}
这是因为导航抽屉需要使用片段,但是您使用了活动,因此导致了错误
解决方案是您需要扩展片段
,您需要将映射活动
更改为映射片段
,如下所示:
public class MapsFragment extends Fragment {
private MapView mapView;
public static MapsFragment newInstance() {
MapsFragment fragment = new MapsFragment();
return fragment;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.mapview, container, false);
// Gets the MapView from the XML layout and creates it
MapsInitializer.initialize(getActivity());
switch (GooglePlayServicesUtil.isGooglePlayServicesAvailable(getActivity())) {
case ConnectionResult.SUCCESS:
Toast.makeText(getActivity(), "SUCCESS", Toast.LENGTH_SHORT).show();
mapView = (MapView) v.findViewById(R.id.map);
mapView.onCreate(savedInstanceState);
// Gets to GoogleMap from the MapView and does initialization stuff
if (mapView != null) {
mapView.getMapAsync(new OnMapReadyCallback() {
@Override
public void onMapReady(GoogleMap googleMap) {
googleMap.getUiSettings().setMyLocationButtonEnabled(true);
googleMap.setMyLocationEnabled(true);
CameraUpdate cameraUpdate = CameraUpdateFactory.newLatLngZoom(new LatLng(43.1, -87.9), 10);
googleMap.animateCamera(cameraUpdate);
}
});
}
break;
case ConnectionResult.SERVICE_MISSING:
Toast.makeText(getActivity(), "SERVICE MISSING", Toast.LENGTH_SHORT).show();
break;
case ConnectionResult.SERVICE_VERSION_UPDATE_REQUIRED:
Toast.makeText(getActivity(), "UPDATE REQUIRED", Toast.LENGTH_SHORT).show();
break;
default:
Toast.makeText(getActivity(), GooglePlayServicesUtil.isGooglePlayServicesAvailable(getActivity()), Toast.LENGTH_SHORT).show();
}
return v;
}
@Override
public void onResume() {
mapView.onResume();
super.onResume();
}
@Override
public void onDestroy() {
super.onDestroy();
mapView.onDestroy();
}
@Override
public void onLowMemory() {
super.onLowMemory();
mapView.onLowMemory();
}
}
布局xml文件为:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.google.android.gms.maps.MapView
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:name=".MapsFragment"/>
</RelativeLayout>
而不是
fragment = new MapsActivity(); //this line show error
在DrawerLayout
中,这是因为navigation drawer
需要使用片段,但是您使用了活动,因此导致了错误
解决方案是您需要扩展片段
,您需要将映射活动
更改为映射片段
,如下所示:
public class MapsFragment extends Fragment {
private MapView mapView;
public static MapsFragment newInstance() {
MapsFragment fragment = new MapsFragment();
return fragment;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.mapview, container, false);
// Gets the MapView from the XML layout and creates it
MapsInitializer.initialize(getActivity());
switch (GooglePlayServicesUtil.isGooglePlayServicesAvailable(getActivity())) {
case ConnectionResult.SUCCESS:
Toast.makeText(getActivity(), "SUCCESS", Toast.LENGTH_SHORT).show();
mapView = (MapView) v.findViewById(R.id.map);
mapView.onCreate(savedInstanceState);
// Gets to GoogleMap from the MapView and does initialization stuff
if (mapView != null) {
mapView.getMapAsync(new OnMapReadyCallback() {
@Override
public void onMapReady(GoogleMap googleMap) {
googleMap.getUiSettings().setMyLocationButtonEnabled(true);
googleMap.setMyLocationEnabled(true);
CameraUpdate cameraUpdate = CameraUpdateFactory.newLatLngZoom(new LatLng(43.1, -87.9), 10);
googleMap.animateCamera(cameraUpdate);
}
});
}
break;
case ConnectionResult.SERVICE_MISSING:
Toast.makeText(getActivity(), "SERVICE MISSING", Toast.LENGTH_SHORT).show();
break;
case ConnectionResult.SERVICE_VERSION_UPDATE_REQUIRED:
Toast.makeText(getActivity(), "UPDATE REQUIRED", Toast.LENGTH_SHORT).show();
break;
default:
Toast.makeText(getActivity(), GooglePlayServicesUtil.isGooglePlayServicesAvailable(getActivity()), Toast.LENGTH_SHORT).show();
}
return v;
}
@Override
public void onResume() {
mapView.onResume();
super.onResume();
}
@Override
public void onDestroy() {
super.onDestroy();
mapView.onDestroy();
}
@Override
public void onLowMemory() {
super.onLowMemory();
mapView.onLowMemory();
}
}
布局xml文件为:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.google.android.gms.maps.MapView
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:name=".MapsFragment"/>
</RelativeLayout>
而不是
fragment = new MapsActivity(); //this line show error
在您的抽屉布局中
这对您有帮助吗?如果是,请接受。如果没有,请告诉我,谢谢帮助我的人,谢谢你,但是它给了我一个我不理解的错误,我现在上传一张图片。现在显示这个错误。。。您只需将您的getfragmentmanage()
更改为getSupportFragmentManage()
这对您有帮助吗?如果是,请接受。如果没有,请告诉我,谢谢帮助我的人,谢谢你,但是它给了我一个我不理解的错误,我现在上传一张图片。现在显示这个错误。。。您只需将您的getfragmentmanage()
更改为getSupportFragmentManage()