好吧，我正在尝试将地图放在一个操作栏项上，并有这个日志
06-30 12:51:28.355: E/AndroidRuntime(1417): FATAL EXCEPTION: main
06-30 12:51:28.355: E/AndroidRuntime(1417): java.lang.RuntimeException: Unable to start activity ComponentInfo{org.example.larissaevent/org.example.larissaevent.MapActivity}: android.view.InflateException: Binary XML file line #6: Error inflating class fragment
06-30 12:51:28.355: E/AndroidRuntime(1417): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2211)
06-30 12:51:28.355: E/AndroidRuntime(1417): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
06-30 12:51:28.355: E/AndroidRuntime(1417): at android.app.ActivityThread.access$600(ActivityThread.java:141)
06-30 12:51:28.355: E/AndroidRuntime(1417): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
06-30 12:51:28.355: E/AndroidRuntime(1417): at android.os.Handler.dispatchMessage(Handler.java:99)
06-30 12:51:28.355: E/AndroidRuntime(1417): at android.os.Looper.loop(Looper.java:137)
06-30 12:51:28.355: E/AndroidRuntime(1417): at android.app.ActivityThread.main(ActivityThread.java:5103)
06-30 12:51:28.355: E/AndroidRuntime(1417): at java.lang.reflect.Method.invokeNative(Native Method)
06-30 12:51:28.355: E/AndroidRuntime(1417): at java.lang.reflect.Method.invoke(Method.java:525)
06-30 12:51:28.355: E/AndroidRuntime(1417): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
06-30 12:51:28.355: E/AndroidRuntime(1417): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
06-30 12:51:28.355: E/AndroidRuntime(1417): at dalvik.system.NativeStart.main(Native Method)
06-30 12:51:28.355: E/AndroidRuntime(1417): Caused by: android.view.InflateException: Binary XML file line #6: Error inflating class fragment
06-30 12:51:28.355: E/AndroidRuntime(1417): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:713)
06-30 12:51:28.355: E/AndroidRuntime(1417): at android.view.LayoutInflater.rInflate(LayoutInflater.java:755)
06-30 12:51:28.355: E/AndroidRuntime(1417): at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
06-30 12:51:28.355: E/AndroidRuntime(1417): at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
06-30 12:51:28.355: E/AndroidRuntime(1417): at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
06-30 12:51:28.355: E/AndroidRuntime(1417): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:267)
06-30 12:51:28.355: E/AndroidRuntime(1417): at android.app.Activity.setContentView(Activity.java:1895)
06-30 12:51:28.355: E/AndroidRuntime(1417): at org.example.larissaevent.MapActivity.onCreate(MapActivity.java:23)
06-30 12:51:28.355: E/AndroidRuntime(1417): at android.app.Activity.performCreate(Activity.java:5133)
06-30 12:51:28.355: E/AndroidRuntime(1417): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
06-30 12:51:28.355: E/AndroidRuntime(1417): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2175)
06-30 12:51:28.355: E/AndroidRuntime(1417): ... 11 more
06-30 12:51:28.355: E/AndroidRuntime(1417): Caused by: java.lang.ClassCastException: org.example.larissaevent.MapActivity cannot be cast to android.app.Fragment
06-30 12:51:28.355: E/AndroidRuntime(1417): at android.app.Fragment.instantiate(Fragment.java:585)
06-30 12:51:28.355: E/AndroidRuntime(1417): at android.app.Fragment.instantiate(Fragment.java:560)
06-30 12:51:28.355: E/AndroidRuntime(1417): at android.app.Activity.onCreateView(Activity.java:4738)
06-30 12:51:28.355: E/AndroidRuntime(1417): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:689)
06-30 12:51:28.355: E/AndroidRuntime(1417): ... 21 more
这是MainActivity for action BAr的代码
public boolean onOptionsItemSelected(MenuItem item) {
Intent intent= null;
switch (item.getItemId()) {
case R.id.action_activity1:
intent =new Intent(MainActivity.this,MapActivity.class);
startActivity(intent);
break;
case R.id.action_activity2:
String facebook ="https://www.facebook.com/";
intent =new Intent(Intent.ACTION_VIEW, Uri.parse(facebook));
startActivity(intent);
break;
case R.id.action_activity4:
String facebook1 ="https://www.facebook.com/";
intent =new Intent(Intent.ACTION_VIEW, Uri.parse(facebook1));
startActivity(intent);
break;
default:
break;
}
return super.onOptionsItemSelected(item);
}
这是地图活动
package org.example.larissaevent;
import android.app.Activity;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.widget.Toast;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;
public class MapActivity extends FragmentActivity {
// Google Map
private GoogleMap googleMap;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.map_fragment);
try {
// Loading map
initilizeMap();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* function to load map. If map is not created it will create it for you
* */
private void initilizeMap() {
if (googleMap == null) {
googleMap = ((MapFragment) getFragmentManager().findFragmentById(
R.id.map)).getMap();
if (googleMap != null) {
// The Map is verified. It is now safe to manipulate the map.
}
// check if map is created successfully or not
if (googleMap == null) {
Toast.makeText(getApplicationContext(),
"Sorry! unable to create maps", Toast.LENGTH_SHORT)
.show();
}
}
}
@Override
protected void onResume() {
super.onResume();
initilizeMap();
}
}
这是我的清单
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="org.example.larissaevent"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="14"
android:targetSdkVersion="19" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<permission
android:name="org.example.larissaevent.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-permission android:name="org.example.larissaevent.MAPS_RECEIVE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<!-- Required to show current location -->
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<!-- Required OpenGL ES 2.0. for Maps V2 -->
<uses-feature
android:glEsVersion="0x00020000"
android:required="true" />
<!-- Requires OpenGL ES version 2 -->
<uses-feature
android:glEsVersion="0x00020000"
android:required="true" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="org.example.larissaevent.SplashScreen"
android:label="@string/app_name"
android:screenOrientation="portrait"
android:theme="@android:style/Theme.Black.NoTitleBar" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<!-- Main activity -->
<activity
android:name="org.example.larissaevent.MainActivity"
android:label="@string/app_name" >
</activity>
<activity
android:name=".AllProductsActivity"
android:label="@string/app_name" >
</activity>
<activity
android:name=".DetailsActivity"
android:label="@string/app_name" >
</activity>
<activity
android:name=".MapActivity"
android:label="@string/app_name" >
</activity>
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="AIzaSyC44ygrUOcoU8YhRz_KUTkxzyYmcvVxJYk" />
</application>
<uses-permission android:name="android.permission.INTERNET" />
</manifest>
任何使其有效的解决方案？我是Android编程新手......
答案 0 :(得分：0)
你搞砸了碎片和活动。您应该按照以下方式更改代码，它应该可以工作：
public MapFragment extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.map_fragment, container, false);
Button alarmButton = (Button) view.findViewById(R.id.alarmButton);
alarmButton.setOnClickListener(this);
try {
// Loading map
initilizeMap();
} catch (Exception e) {
e.printStackTrace();
}
return view;
}
@Override
public void onDestroyView() {
MapFragment f = (MapFragment) getFragmentManager().findFragmentById(R.id.map);
if (f != null) {
try {
getFragmentManager().beginTransaction().remove(f).commit();
} catch (Exception e) {
e.printStackTrace();
}
}
super.onDestroyView();
}
...
}
然后到你的布局文件：
<fragment
android:id="@+id/map"
android:name="com.google.android.gms.maps.MapFragment"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1"/>
希望这有帮助！