java-FragmentMapActivity中的NoClassDefFoundError
作者:互联网
我经常看到这个问题,但是所提出的解决方案似乎都不适合我.我越来越
E/AndroidRuntime(897): java.lang.NoClassDefFoundError: android.support.v4.app.FragmentMapActivity$4
尝试打开新的FragmentMapActivity时.
码:
public class Maps extends FragmentMapActivity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.maps_simple);
//MapView for the lose :(
Toast.makeText(this, R.string.map_warning, Toast.LENGTH_LONG).show();
MapView mapView = (MapView)findViewById(R.id.mapview);
mapView.setBuiltInZoomControls(true);
}
@Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
}
R.layout.maps_simple包含:
<?xml version="1.0" encoding="utf-8"?>
<com.google.android.maps.MapView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/mapview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:clickable="true"
android:apiKey="<key removed for security>"
/>
表现:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="osmstudios.mappingapp"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="8" android:targetSdkVersion="13" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<application android:icon="@drawable/icon" android:label="@string/app_name" android:theme="@style/Theme.MapApp" android:hardwareAccelerated="true">
<uses-library android:name="com.google.android.maps" />
<activity android:label="@string/app_name" android:name=".AppMainActivity">
<intent-filter >
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:label="@string/app_name" android:name="com.keyes.youtube.OpenYouTubePlayerActivity"></activity>
<activity android:label="@string/app_name" android:name=".Maps">
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<category android:name="osmstudios.mappingapp" />
</intent-filter>
</activity>
</application>
</manifest>
这是打开FragmentMapActivity意图的按钮按下的内部代码:
Intent intent = new Intent(ctx, Maps.class);
startActivity(intent);
最后,这是我的Java Build Path工具中的Libraries文件夹的样子:
我真的一直在把头撞在墙上.任何帮助,将不胜感激.
解决方法:
这有点晚了,但是我遇到了完全相同的问题,并且至少可以解决“ java.lang.NoClassDefFoundError:”.在项目属性-> java构建路径->中库,我从android sdk路径中包含了android-support-v4.jar.该库在编译时可用,但在运行时不可用.您需要将此jar从sdk路径复制到应用程序库位置,这样该库将被静态添加到您的应用程序中,并且可以在运行时找到.希望这可以帮助.我在StackOverFlow中进行了大量搜索后找到了这个解决方案.她是链接. Trying to use DialogFragments via v4 compatability causes NoClassDefFoundErrors
标签:android-fragments,google-maps,actionbarsherlock,java,android 来源: https://codeday.me/bug/20191101/1985748.html