Java 当我按下后退按钮时,片段中的MapBox也存在permissionsManager.requestLocationPermissions问题(此)
我是Java和Android工作室的新手。我目前正试图将MapBox地图放入一个片段中,并获取我的设备位置。它起了一定的作用,在一个片段中启动的地图也找到了我的位置,但一旦我按下设备上的“后退”按钮,地图就会崩溃,应用程序虽然没有关闭,但变得没有响应。我得到的logcat消息是“2020-05-18 12:02:46.392 28026-28125/com.example.projektas5 W/libEGL:EGLNativeWindowType 0x7d2c6f4010”。此外,由于permissionsManager.requestLocationPermissions(此)仅适用于活动,因此我只能通过在电话设置中允许权限来获取设备位置。如果有人能帮助我,我将不胜感激。我的代码如下:Java 当我按下后退按钮时,片段中的MapBox也存在permissionsManager.requestLocationPermissions问题(此),java,android,fragment,mapbox,fragment-oncreateview,Java,Android,Fragment,Mapbox,Fragment Oncreateview,我是Java和Android工作室的新手。我目前正试图将MapBox地图放入一个片段中,并获取我的设备位置。它起了一定的作用,在一个片段中启动的地图也找到了我的位置,但一旦我按下设备上的“后退”按钮,地图就会崩溃,应用程序虽然没有关闭,但变得没有响应。我得到的logcat消息是“2020-05-18 12:02:46.392 28026-28125/com.example.projektas5 W/libEGL:EGLNativeWindowType 0x7d2c6f4010”。此外,由于per
public class SecondPage extends Fragment implements OnMapReadyCallback, LocationEngineListener, PermissionsListener {
View root;
MapView mapView;
private MapboxMap map;
private PermissionsManager permissionsManager;
private LocationEngine locationEngine;
private LocationLayerPlugin locationLayerPlugin;
private Location originLocation;
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
Mapbox.getInstance(getContext(),getString(R.string.access_token));
root = inflater.inflate(R.layout.second_page, container, false);
mapView =(MapView) (root).findViewById(R.id.mapView);
mapView.onCreate(savedInstanceState);
mapView.getMapAsync(this);
return root;
}
@Override
public void onMapReady(MapboxMap mapboxMap) {
map = mapboxMap;
enableLocation();
}
private void enableLocation() {
if (PermissionsManager.areLocationPermissionsGranted(getContext())) {
initializeLocationEngine();
initializeLocationLayer();
} else {
permissionsManager = new PermissionsManager(this);
// permissionsManager.requestLocationPermissions(this);
}
}
private void initializeLocationEngine() {
locationEngine = new LocationEngineProvider(getContext()).obtainBestLocationEngineAvailable();
locationEngine.setPriority(LocationEnginePriority.HIGH_ACCURACY);
locationEngine.activate();
Location lastLocation = locationEngine.getLastLocation();
if (lastLocation != null) {
originLocation = lastLocation;
setCameraPosition(lastLocation);
} else {
locationEngine.addLocationEngineListener(this);
}
}
private void initializeLocationLayer() {
locationLayerPlugin = new LocationLayerPlugin(mapView, map, locationEngine);
locationLayerPlugin.setLocationLayerEnabled(true);
locationLayerPlugin.setCameraMode(CameraMode.TRACKING);
locationLayerPlugin.setRenderMode(RenderMode.NORMAL);
}
private void setCameraPosition(Location location) {
map.animateCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(location.getLatitude(),
location.getLongitude()), 13.0));
}
@Override
@SuppressWarnings("MissingPermission")
public void onConnected() {
locationEngine.requestLocationUpdates();
}
@Override
public void onLocationChanged(Location location) {
if (location != null) {
originLocation = location;
setCameraPosition(location);
}
}
@Override
public void onExplanationNeeded(List<String> permissionsToExplain) {
//Present toast or dialog. Need to do this on my own
}
@Override
public void onPermissionResult(boolean granted) {
if (granted) {
enableLocation();
}
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
permissionsManager.onRequestPermissionsResult(requestCode, permissions,grantResults);
}
@Override
public void onStart() {
super.onStart();
if (locationEngine != null) {
locationEngine.removeLocationUpdates();
}
if (locationLayerPlugin != null) {
locationLayerPlugin.onStart();
}
mapView.onStart();
}
@Override
public void onResume() {
super.onResume();
mapView.onResume();
}
@Override
public void onPause() {
super.onPause();
mapView.onPause();
}
@Override
public void onStop() {
super.onStop();
if (locationEngine != null) {
locationEngine.removeLocationUpdates();
}
if (locationLayerPlugin != null) {
locationLayerPlugin.onStop();
}
mapView.onStop();
}
@Override
public void onSaveInstanceState(@NonNull Bundle outState) {
super.onSaveInstanceState(outState);
mapView.onSaveInstanceState(outState);
}
@Override
public void onLowMemory() {
super.onLowMemory();
mapView.onLowMemory();
}
@Override
public void onDestroy() {
super.onDestroy();
if (locationEngine != null) {
locationEngine.deactivate();
}
mapView.onDestroy();
}
}
公共类SecondPage扩展了MapreadyCallback、LocationEngineListener、PermissionsListener上的片段实现{
视图根;
地图视图;
私人地图;
私人许可证管理人许可证管理人;
私人定位引擎定位引擎;
私人位置layerplugin位置layerplugin;
私密区位;原始区位;
@凌驾
创建时的公共void(@Nullable Bundle savedInstanceState){
super.onCreate(savedInstanceState);
}
@可空
@凌驾
创建视图时的公共视图(LayoutFlater充气机、@Nullable ViewGroup容器、@Nullable Bundle savedInstanceState){
getInstance(getContext(),getString(R.string.access_token));
根=充气机。充气(R.layout.second_页,容器,假);
mapView=(mapView)(根).findViewById(R.id.mapView);
onCreate(savedInstanceState);
getMapAsync(这个);
返回根;
}
@凌驾
mapready上的公共无效(MapboxMap MapboxMap){
map=mapboxMap;
enableLocation();
}
私有void enableLocation(){
if(PermissionsManager.areLocationPermissionsGranted(getContext())){
初始化ElocationEngine();
初始化ElocationLayer();
}否则{
permissionsManager=新的permissionsManager(此);
//permissionsManager.requestLocationPermissions(此);
}
}
private void initializeLocationEngine(){
locationEngine=新的LocationEngineProvider(getContext())。获取BestLocationEngineAvailable();
locationEngine.setPriority(LocationEnginePriority.HIGH_精度);
locationEngine.activate();
Location lastLocation=locationEngine.getLastLocation();
if(lastLocation!=null){
originLocation=最后一个位置;
setCameraPosition(最后位置);
}否则{
locationEngine.addLocationEngineListener(此);
}
}
private void initializeLocationLayer(){
locationLayerPlugin=新的locationLayerPlugin(地图视图、地图、位置引擎);
locationLayerPlugin.setLocationLayerEnabled(true);
locationLayerPlugin.setCameraMode(CameraMode.TRACKING);
locationLayerPlugin.setRenderMode(RenderMode.NORMAL);
}
私有void setCameraPosition(位置){
map.animateCamera(CameraUpdateFactory.newLatLngZoom)(新LatLng(location.getLatitude()),
location.getLongitude()),13.0);
}
@凌驾
@SuppressWarnings(“MissingPermission”)
未连接的公共空间(){
locationEngine.requestLocationUpdates();
}
@凌驾
已更改位置上的公共无效(位置){
如果(位置!=null){
原始位置=位置;
设置摄像机位置(位置);
}
}
@凌驾
public void OneExplanationRequired(列出许可证解释){
//展示祝酒词或对话。需要我自己来做吗
}
@凌驾
public void onPermissionResult(已授予布尔值){
如果(授予){
enableLocation();
}
}
@凌驾
public void onRequestPermissionsResult(int-requestCode,@NonNull-String[]permissions,@NonNull-int[]grantResults){
permissionsManager.onRequestPermissionsResult(请求代码、权限、grantResults);
}
@凌驾
public void onStart(){
super.onStart();
如果(locationEngine!=null){
locationEngine.RemovelocationUpdate();
}
if(locationLayerPlugin!=null){
locationLayerPlugin.onStart();
}
onStart();
}
@凌驾
恢复时公开作废(){
super.onResume();
onResume();
}
@凌驾
公共无效暂停(){
super.onPause();
onPause();
}
@凌驾
公共void onStop(){
super.onStop();
如果(locationEngine!=null){
locationEngine.RemovelocationUpdate();
}
if(locationLayerPlugin!=null){
locationLayerPlugin.onStop();
}
mapView.onStop();
}
@凌驾
SAVEInstanceState上的公共无效(@NonNull Bundle outState){
super.onSaveInstanceState(超出状态);
mapView.onSaveInstanceState(outState);
}
@凌驾
public void onLowMemory(){
super.onLowMemory();
onLowMemory();
}
@凌驾
公共空间{
super.ondestory();
如果(locationEngine!=null){
locationEngine.deactivate();
}
mapView.onDestroy();
}
}
使用地图SDKSupportMapFragment
演示如何在SupportMapFragment
中使用Mapbox Maps SDK的LocationComponent
从那个例子中吸取教训?如果您仍然遇到车祸,请发布更多日志信息。搜索任何包含Mbgl
的内容,或搜索致命的。“2020-05-18 12:02:46.392 28026-28125/com.example.projektas5 W/libEGL:EGLNativeWindowType 0x7d2c6f401”消息不存在
@Override
public void onDestroyView() {
super.onDestroyView();
if (locationEngine != null) {
locationEngine.deactivate();
}
// mapView.onDestroyView();
}