android - 如何将地图视图添加到我的 Android 应用程序 FragmentActivity
问题描述
我正在尝试将地图视图添加到我的 android 应用程序但失败的应用程序崩溃注意:我已添加谷歌地图 API 并将权限关联到 android 清单
我的contact_view_hd.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/linear_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/gradient_animation_list"
android:orientation="vertical">
<com.google.android.gms.maps.MapView
android:id="@+id/mapview"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
</LinearLayout>
和我的片段类
public class ContactDetail extends Fragment implements OnMapReadyCallback{
MapView mMapView;
GoogleMap mGoogleMap;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.view_contact_hd, container, false);
mMapView = (MapView) v.findViewById(R.id.mapview);
mMapView.onCreate(savedInstanceState);
mMapView.getMapAsync(this); //this is important
return v;
}
@Override
public void onMapReady(GoogleMap googleMap) {
mGoogleMap = googleMap;
LatLng pp = new LatLng(43.1, -87.9);
mGoogleMap.getUiSettings().setZoomControlsEnabled(true);
mGoogleMap.addMarker(new MarkerOptions().position(pp));
mGoogleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(pp, 10));
}
@Override
public void onResume() {
super.onResume();
mMapView.onResume();
}
@Override
public void onPause() {
super.onPause();
mMapView.onPause();
}
@Override
public void onDestroy() {
super.onDestroy();
mMapView.onDestroy();
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
mMapView.onSaveInstanceState(outState);
}
@Override
public void onLowMemory() {
super.onLowMemory();
mMapView.onLowMemory();
}
}
日志
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.rupom.sbl, PID: 7373
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.rupom.sbl/com.rupom.sbl.ContactDetail}: java.lang.ClassCastException: com.rupom.sbl.ContactDetail cannot be cast to android.app.Activity
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2843)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
Caused by: java.lang.ClassCastException: com.rupom.sbl.ContactDetail cannot be cast to android.app.Activity
at android.app.AppComponentFactory.instantiateActivity(AppComponentFactory.java:69)
at android.support.v4.app.CoreComponentFactory.instantiateActivity(CoreComponentFactory.java:43)
at android.app.Instrumentation.newActivity(Instrumentation.java:1215)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2831)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
解决方案
推荐阅读
- c++ - 使用 delete [] 运算符取消分配类中数据成员的内存
- javascript - 使用 try 和 catch 异步方法的正确方法是什么?
- tomcat - Undertow 是否具有与 Tomcat WebAuthentication 等效的 Web 层身份验证功能?
- javascript - Javascript - 来自字符串的阶乘
- ios - IOS Swift Spotify SDK 错误
- list - How to work on each two adjacent list items at a time in Elixir?
- latex - 在乳胶中引用 URL
- maven - 覆盖maven项目中依赖项的样式表
- html - ` 中的下拉菜单
- python - 如何阻止 Flask 同时为多条路线提供服务?