我有以下活动
package com.appnetics;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.view.View;
import android.widget.Button;
public class FragmenttestActivity extends FragmentActivity {
Button LogIn = null ;
final FragmentManager fragmentManager = getSupportFragmentManager() ;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
LogIn = (Button) findViewById(R.id.btn_showdetails);
LogInEvent() ;
}
public void LogInEvent(){
LogIn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
details fragment = new details();
fragmentTransaction.add(R.id.my_parent_layout, fragment);
fragmentTransaction.commit();
}
});
}
}
我称之为清单
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.appnetics"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="8" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:name=".FragmenttestActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
问题是应用程序崩溃给这个日志猫
05-30 14:31:10.970: W/dalvikvm(4958): Unable to resolve superclass of Lcom/appnetics/FragmenttestActivity; (5)
05-30 14:31:10.970: W/dalvikvm(4958): Link of class 'Lcom/appnetics/FragmenttestActivity;' failed
05-30 14:31:10.970: D/AndroidRuntime(4958): Shutting down VM
05-30 14:31:10.970: W/dalvikvm(4958): threadid=1: thread exiting with uncaught exception (group=0x402ce760)
05-30 14:31:10.980: E/AndroidRuntime(4958): FATAL EXCEPTION: main
05-30 14:31:10.980: E/AndroidRuntime(4958): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.appnetics/com.appnetics.FragmenttestActivity}: java.lang.ClassNotFoundException: com.appnetics.FragmenttestActivity in loader dalvik.system.PathClassLoader[/data/app/com.appnetics-1.apk]
05-30 14:31:10.980: E/AndroidRuntime(4958): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1739)
05-30 14:31:10.980: E/AndroidRuntime(4958): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1831)
05-30 14:31:10.980: E/AndroidRuntime(4958): at android.app.ActivityThread.access$500(ActivityThread.java:122)
05-30 14:31:10.980: E/AndroidRuntime(4958): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1024)
05-30 14:31:10.980: E/AndroidRuntime(4958): at android.os.Handler.dispatchMessage(Handler.java:99)
05-30 14:31:10.980: E/AndroidRuntime(4958): at android.os.Looper.loop(Looper.java:132)
05-30 14:31:10.980: E/AndroidRuntime(4958): at android.app.ActivityThread.main(ActivityThread.java:4123)
05-30 14:31:10.980: E/AndroidRuntime(4958): at java.lang.reflect.Method.invokeNative(Native Method)
05-30 14:31:10.980: E/AndroidRuntime(4958): at java.lang.reflect.Method.invoke(Method.java:491)
05-30 14:31:10.980: E/AndroidRuntime(4958): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:849)
05-30 14:31:10.980: E/AndroidRuntime(4958): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:607)
05-30 14:31:10.980: E/AndroidRuntime(4958): at dalvik.system.NativeStart.main(Native Method)
05-30 14:31:10.980: E/AndroidRuntime(4958): Caused by: java.lang.ClassNotFoundException: com.appnetics.FragmenttestActivity in loader dalvik.system.PathClassLoader[/data/app/com.appnetics-1.apk]
05-30 14:31:10.980: E/AndroidRuntime(4958): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:251)
05-30 14:31:10.980: E/AndroidRuntime(4958): at java.lang.ClassLoader.loadClass(ClassLoader.java:540)
05-30 14:31:10.980: E/AndroidRuntime(4958): at java.lang.ClassLoader.loadClass(ClassLoader.java:500)
05-30 14:31:10.980: E/AndroidRuntime(4958): at android.app.Instrumentation.newActivity(Instrumentation.java:1025)
05-30 14:31:10.980: E/AndroidRuntime(4958): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1730)
05-30 14:31:10.980: E/AndroidRuntime(4958): ... 11 more
我确定活动的名称，我不知道为什么有任何想法