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android - ActionBar error

问题描述:

I am trying to create action bar using SharLock Library,

I am added Sharlock library in my project.

Here is my code,

public class MainActivity extends SherlockActivity implements ActionBar.OnNavigationListener {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

Button btnClick=(Button)findViewById(R.id.clickMe);

btnClick.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View arg0) {

// TODO Auto-generated method stub

Intent intent=new Intent(MainActivity.this,ListNavigation.class);

startActivity(intent);

}

});

}

@Override

public boolean onNavigationItemSelected(int itemPosition, long itemId) {

// TODO Auto-generated method stub

return false;

}

In my manifest code,

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

package="com.example.actionbar"

android:versionCode="1"

android:versionName="1.0" >

<uses-sdk

android:minSdkVersion="8"

android:targetSdkVersion="16" />

<application

android:icon="@drawable/ic_launcher"

android:label="@string/app_name" >

<activity

android:name=".MainActivity"

android:label="@string/app_name" android:theme="@style/Theme.Sherlock">

<intent-filter>

<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />

</intent-filter>

</activity>

</application>

</manifest>

Once i'm using extends SherlockActivity implements ActionBar.OnNavigationListener,

I am getting error like this,

11-23 12:56:48.811: ERROR/AndroidRuntime(3047): FATAL EXCEPTION: main

11-23 12:56:48.811: ERROR/AndroidRuntime(3047): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.actionbar/com.example.actionbar.MainActivity}: java.lang.ClassNotFoundException: com.example.actionbar.MainActivity in loader dalvik.system.PathClassLoader[/data/app/com.example.actionbar-1.apk]

11-23 12:56:48.811: ERROR/AndroidRuntime(3047): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2585)

11-23 12:56:48.811: ERROR/AndroidRuntime(3047): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)

11-23 12:56:48.811: ERROR/AndroidRuntime(3047): at android.app.ActivityThread.access$2300(ActivityThread.java:125)

11-23 12:56:48.811: ERROR/AndroidRuntime(3047): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)

11-23 12:56:48.811: ERROR/AndroidRuntime(3047): at android.os.Handler.dispatchMessage(Handler.java:99)

11-23 12:56:48.811: ERROR/AndroidRuntime(3047): at android.os.Looper.loop(Looper.java:123)

11-23 12:56:48.811: ERROR/AndroidRuntime(3047): at android.app.ActivityThread.main(ActivityThread.java:4627)

11-23 12:56:48.811: ERROR/AndroidRuntime(3047): at java.lang.reflect.Method.invokeNative(Native Method)

11-23 12:56:48.811: ERROR/AndroidRuntime(3047): at java.lang.reflect.Method.invoke(Method.java:521)

11-23 12:56:48.811: ERROR/AndroidRuntime(3047): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)

11-23 12:56:48.811: ERROR/AndroidRuntime(3047): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)

11-23 12:56:48.811: ERROR/AndroidRuntime(3047): at dalvik.system.NativeStart.main(Native Method)

11-23 12:56:48.811: ERROR/AndroidRuntime(3047): Caused by: java.lang.ClassNotFoundException: com.example.actionbar.MainActivity in loader dalvik.system.PathClassLoader[/data/app/com.example.actionbar-1.apk]

11-23 12:56:48.811: ERROR/AndroidRuntime(3047): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:243)

11-23 12:56:48.811: ERROR/AndroidRuntime(3047): at java.lang.ClassLoader.loadClass(ClassLoader.java:573)

11-23 12:56:48.811: ERROR/AndroidRuntime(3047): at java.lang.ClassLoader.loadClass(ClassLoader.java:532)

11-23 12:56:48.811: ERROR/AndroidRuntime(3047): at android.app.Instrumentation.newActivity(Instrumentation.java:1021)

11-23 12:56:48.811: ERROR/AndroidRuntime(3047): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2577)

11-23 12:56:48.811: ERROR/AndroidRuntime(3047): ... 11 more

网友答案:

The logcat states that you start the Activity :

com.example.acctionbar.MainActivity

there are two c's in acccccctionbar. Search for this spelling in your code and change it for one c.

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