其实我正在尝试在Android Drawer示例上实现Google Map，基本上我想通过选择第一个菜单项来显示地图。所有提供的示例都是对所有地图使用FragmentActivity，我安排扩展Fragment类（由抽屉使用），创建一个适合Map的类。不幸的是App在发布时崩溃了：
主要活动
public class HLMainActivity extends ActionBarActivity implements
NavigationDrawerFragment.NavigationDrawerCallbacks {
/**
* Fragment managing the behaviors, interactions and presentation of the
* navigation drawer.
*/
private NavigationDrawerFragment mNavigationDrawerFragment;
/**
* Used to store the last screen title. For use in
* {@link #restoreActionBar()}.
*/
private CharSequence mTitle;
public static FragmentManager fragmentManager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_hlmain);
// initialising the object of the FragmentManager. Here I'm passing getSupportFragmentManager(). You can pass getFragmentManager() if you are coding for Android 3.0 or above.
fragmentManager = getSupportFragmentManager();
mNavigationDrawerFragment = (NavigationDrawerFragment) getSupportFragmentManager()
.findFragmentById(R.id.navigation_drawer);
mTitle = getTitle();
// Set up the drawer.
mNavigationDrawerFragment.setUp(R.id.navigation_drawer,
(DrawerLayout) findViewById(R.id.drawer_layout));
}
@Override
public void onNavigationDrawerItemSelected(int position) {
// update the main content by replacing fragments
fragmentManager = getSupportFragmentManager();
HLMainMapFragment fragment = new HLMainMapFragment();
getSupportFragmentManager().beginTransaction()
.replace(R.id.container, fragment).commit();
}
public void onSectionAttached(int number) {
switch (number) {
case 1:
mTitle = getString(R.string.title_section1);
break;
case 2:
mTitle = getString(R.string.title_section2);
break;
case 3:
mTitle = getString(R.string.title_section3);
break;
}
}
public void restoreActionBar() {
ActionBar actionBar = getSupportActionBar();
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
actionBar.setDisplayShowTitleEnabled(true);
actionBar.setTitle(mTitle);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
if (!mNavigationDrawerFragment.isDrawerOpen()) {
// Only show items in the action bar relevant to this screen
// if the drawer is not showing. Otherwise, let the drawer
// decide what to show in the action bar.
getMenuInflater().inflate(R.menu.hlmain, menu);
restoreActionBar();
return true;
}
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
地图片段
public class HLMainMapFragment extends Fragment {
private static View view;
/**
* Note that this may be null if the Google Play services APK is not
* available.
*/
private static GoogleMap mMap;
private static Double latitude, longitude;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
if (container == null) {
return null;
}
view = (RelativeLayout) inflater.inflate(R.layout.location_fragment,
container, false);
// Passing harcoded values for latitude & longitude. Please change as
// per your need. This is just used to drop a Marker on the Map
latitude = 26.78;
longitude = 72.56;
setUpMapIfNeeded(); // For setting up the MapFragment
return view;
}
/***** Sets up the map if it is possible to do so *****/
public static void setUpMapIfNeeded() {
// Do a null check to confirm that we have not already instantiated the
// map.
if (mMap == null) {
// Try to obtain the map from the SupportMapFragment.
mMap = ((SupportMapFragment) HLMainActivity.fragmentManager
.findFragmentById(R.id.map)).getMap();
// Check if we were successful in obtaining the map.
if (mMap != null)
setUpMap();
}
}
/**
* This is where we can add markers or lines, add listeners or move the
* camera.
* <p>
* This should only be called once and when we are sure that {@link #mMap}
* is not null.
*/
private static void setUpMap() {
// For showing a move to my loction button
mMap.setMyLocationEnabled(true);
// For dropping a marker at a point on the Map
mMap.addMarker(new MarkerOptions()
.position(new LatLng(latitude, longitude)).title("My Home")
.snippet("Home Address"));
// For zooming automatically to the Dropped PIN Location
mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(
latitude, longitude), 12.0f));
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
// TODO Auto-generated method stub
if (mMap != null)
setUpMap();
if (mMap == null) {
// Try to obtain the map from the SupportMapFragment.
mMap = ((SupportMapFragment) HLMainActivity.fragmentManager
.findFragmentById(R.id.map)).getMap();
// Check if we were successful in obtaining the map.
if (mMap != null)
setUpMap();
}
}
/****
* The mapfragment's id must be removed from the FragmentManager or else if
* the same it is passed on the next time then app will crash
****/
@Override
public void onDestroyView() {
super.onDestroyView();
if (mMap != null) {
HLMainActivity.fragmentManager
.beginTransaction()
.remove(HLMainActivity.fragmentManager
.findFragmentById(R.id.map)).commit();
mMap = null;
}
}
}
位置片段XML
<?xml version="1.0" encoding="utf-8"?>
<MapFragment xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.MapFragment" />
logcat的
04-14 16:43:36.984: E/AndroidRuntime(1159): FATAL EXCEPTION: main
04-14 16:43:36.984: E/AndroidRuntime(1159): Process: com.studiohangloose.iMobility, PID: 1159
04-14 16:43:36.984: E/AndroidRuntime(1159): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.studiohangloose.iMobility/com.studiohangloose.iMobility.HLMainActivity}: android.view.InflateException: Binary XML file line #2: Error inflating class MapFragment
04-14 16:43:36.984: E/AndroidRuntime(1159): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
04-14 16:43:36.984: E/AndroidRuntime(1159): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
04-14 16:43:36.984: E/AndroidRuntime(1159): at android.app.ActivityThread.access$800(ActivityThread.java:135)
04-14 16:43:36.984: E/AndroidRuntime(1159): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
04-14 16:43:36.984: E/AndroidRuntime(1159): at android.os.Handler.dispatchMessage(Handler.java:102)
04-14 16:43:36.984: E/AndroidRuntime(1159): at android.os.Looper.loop(Looper.java:136)
04-14 16:43:36.984: E/AndroidRuntime(1159): at android.app.ActivityThread.main(ActivityThread.java:5017)
04-14 16:43:36.984: E/AndroidRuntime(1159): at java.lang.reflect.Method.invokeNative(Native Method)
04-14 16:43:36.984: E/AndroidRuntime(1159): at java.lang.reflect.Method.invoke(Method.java:515)
04-14 16:43:36.984: E/AndroidRuntime(1159): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
04-14 16:43:36.984: E/AndroidRuntime(1159): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
04-14 16:43:36.984: E/AndroidRuntime(1159): at dalvik.system.NativeStart.main(Native Method)
04-14 16:43:36.984: E/AndroidRuntime(1159): Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class MapFragment
04-14 16:43:36.984: E/AndroidRuntime(1159): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:707)
04-14 16:43:36.984: E/AndroidRuntime(1159): at android.view.LayoutInflater.inflate(LayoutInflater.java:469)
04-14 16:43:36.984: E/AndroidRuntime(1159): at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
04-14 16:43:36.984: E/AndroidRuntime(1159): at com.studiohangloose.iMobility.HLMainMapFragment.onCreateView(HLMainMapFragment.java:33)
04-14 16:43:36.984: E/AndroidRuntime(1159): at android.support.v4.app.Fragment.performCreateView(Fragment.java:1500)
04-14 16:43:36.984: E/AndroidRuntime(1159): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:927)
04-14 16:43:36.984: E/AndroidRuntime(1159): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1104)
04-14 16:43:36.984: E/AndroidRuntime(1159): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
04-14 16:43:36.984: E/AndroidRuntime(1159): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1467)
04-14 16:43:36.984: E/AndroidRuntime(1159): at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:570)
04-14 16:43:36.984: E/AndroidRuntime(1159): at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1171)
04-14 16:43:36.984: E/AndroidRuntime(1159): at android.app.Activity.performStart(Activity.java:5241)
04-14 16:43:36.984: E/AndroidRuntime(1159): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2168)
04-14 16:43:36.984: E/AndroidRuntime(1159): ... 11 more
04-14 16:43:36.984: E/AndroidRuntime(1159): Caused by: java.lang.ClassNotFoundException: Didn't find class "android.view.MapFragment" on path: DexPathList[[zip file "/data/app/com.studiohangloose.iMobility-2.apk"],nativeLibraryDirectories=[/data/app-lib/com.studiohangloose.iMobility-2, /system/lib]]
04-14 16:43:36.984: E/AndroidRuntime(1159): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
04-14 16:43:36.984: E/AndroidRuntime(1159): at java.lang.ClassLoader.loadClass(ClassLoader.java:497)
04-14 16:43:36.984: E/AndroidRuntime(1159): at java.lang.ClassLoader.loadClass(ClassLoader.java:457)
04-14 16:43:36.984: E/AndroidRuntime(1159): at android.view.LayoutInflater.createView(LayoutInflater.java:559)
04-14 16:43:36.984: E/AndroidRuntime(1159): at android.view.LayoutInflater.onCreateView(LayoutInflater.java:652)
04-14 16:43:36.984: E/AndroidRuntime(1159): at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:66)
04-14 16:43:36.984: E/AndroidRuntime(1159): at android.view.LayoutInflater.onCreateView(LayoutInflater.java:669)
04-14 16:43:36.984: E/AndroidRuntime(1159): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:694)
04-14 16:43:36.984: E/AndroidRuntime(1159): ... 23 more
有任何建议！？或者也许是解决方案的链接......
答案 0 :(得分：10)
如果您想在fragment课程中使用地图，请使用MapView。
MapView mapView;
GoogleMap googleMap;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
View view = inflater.inflate(R.layout.your_layout_name, container, false);
mapView = (MapView) view.findViewById(R.id.map);
mapView.onCreate(savedInstanceState);
if(mapView!=null)
{
googleMap = mapView.getMap();
googleMap.getUiSettings().setMyLocationButtonEnabled(false);
googleMap.setMyLocationEnabled(true);
googleMap.getUiSettings().setZoomControlsEnabled(true);
}
return view;
}
@Override
public void onResume()
{
mapView.onResume();
super.onResume();
}
@Override
public void onDestroy()
{
super.onDestroy();
mapView.onDestroy();
}
@Override
public void onLowMemory()
{
super.onLowMemory();
mapView.onLowMemory();
}
在xml文件粘贴代码
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
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" />
</RelativeLayout>
试试这个你会看到一个好结果......
答案 1 :(得分：0)
更新位置片段XML ，如下所示：
<?xml version="1.0" encoding="utf-8"?>
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/map"
android:name="com.google.android.gms.maps.MapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
在您的片段中实现OnMapReadyCallback界面，并编写用于在onMapReady(GoogleMap map)方法中配置地图的代码，例如：
public void onMapReady(GoogleMap map) {
googleMap.addMarker(new MarkerOptions()
.position(new LatLng(0, 0))
.title("Marker"));
googleMap.setMyLocationEnabled(true);
googleMap.animateCamera(CameraUpdateFactory.zoomTo(17.0f) );
}
我希望它会对你有所帮助！