Android的actionbarsherlock應用程序在啓動時崩潰。 LogCat裏面

Question

我真的很需要解決這個問題。 我有這個源代碼：

package com.ciubotariu.stiaticav1; 

/* 
* Copyright (C) 2011 The Android Open Source Project 
* 
* Licensed under the Apache License, Version 2.0 (the "License"); 
* you may not use this file except in compliance with the License. 
* You may obtain a copy of the License at 
* 
*  http://www.apache.org/licenses/LICENSE-2.0 
* 
* Unless required by applicable law or agreed to in writing, software 
* distributed under the License is distributed on an "AS IS" BASIS, 
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
* See the License for the specific language governing permissions and 
* limitations under the License. 
*/ 

import java.util.Random; 

import android.os.Bundle; 
import android.support.v4.app.Fragment; 
import android.support.v4.app.FragmentManager; 
import android.support.v4.app.FragmentPagerAdapter; 
import android.support.v4.view.ViewPager; 
import android.util.Log; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.view.ViewGroup; 
import android.view.Window; 
import android.view.WindowManager; 
import android.widget.Button; 
import android.widget.ListView; 
import android.widget.TextView; 
import android.widget.Toast; 

import com.actionbarsherlock.app.SherlockFragmentActivity; 
import com.actionbarsherlock.app.SherlockListFragment; 



public class MainActivity extends SherlockFragmentActivity { 
    static final int NUM_ITEMS = 550; 

    MyAdapter mAdapter; 

    ViewPager mPager; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 

     super.onCreate(savedInstanceState); 


     //requestWindowFeature(Window.FEATURE_NO_TITLE); 
     // getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, 
       // WindowManager.LayoutParams.FLAG_FULLSCREEN); 
     //getSupportActionBar().setDisplayShowTitleEnabled(false); 
     //getSupportActionBar().setDisplayShowHomeEnabled(false); 
     // setContentView(R.layout.fragment_pager); 

     mAdapter = new MyAdapter(getSupportFragmentManager()); 

     mPager = (ViewPager)findViewById(R.id.pager); 
     mPager.setAdapter(mAdapter); 

     // Watch for button clicks. 
     Button button = (Button)findViewById(R.id.goto_first); 
//  button.getBackground().setColorFilter(0xFF0174DF, PorterDuff.Mode.MULTIPLY); 
     button.setOnClickListener(new OnClickListener() { 
      public void onClick(View v) { 
       mPager.setCurrentItem(0); 
      } 
     }); 
     button = (Button)findViewById(R.id.goto_last); 
     button.setOnClickListener(new OnClickListener() { 
      public void onClick(View v) { 
       mPager.setCurrentItem(NUM_ITEMS-1); 
      } 
     }); 

     button = (Button)findViewById(R.id.goto_random); 
     button.setOnClickListener(new OnClickListener() { 
      public void onClick(View v) { 

       Random r = new Random(); 
       int i1=r.nextInt(529)+20; 
       mPager.setCurrentItem(i1); 
      } 
     }); 

     button = (Button)findViewById(R.id.goto_about); 
     button.setOnClickListener(new OnClickListener() { 
      public void onClick(View v) { 

      Toast.makeText(MainActivity.this, "Ciuboariu Florin, Ianuarie 2013", Toast.LENGTH_SHORT).show(); 
      } 
     }); 
    } 

    public static class MyAdapter extends FragmentPagerAdapter { 
     public MyAdapter(FragmentManager fm) { 
      super(fm); 
     } 

     @Override 
     public int getCount() { 
      return NUM_ITEMS; 
     } 

     @Override 
     public Fragment getItem(int position) { 
      return ArrayListFragment.newInstance(position); 
     } 
    } 

    public static class ArrayListFragment extends SherlockListFragment { 
     int mNum; 

     /** 
     * Create a new instance of CountingFragment, providing "num" 
     * as an argument. 
     */ 
     static ArrayListFragment newInstance(int num) { 
      ArrayListFragment f = new ArrayListFragment(); 

      // Supply num input as an argument. 
      Bundle args = new Bundle(); 
      args.putInt("num", num); 
      f.setArguments(args); 

      return f; 
     } 

     /** 
     * When creating, retrieve this instance's number from its arguments. 
     */ 

     @Override 
     public void onCreate(Bundle savedInstanceState) { 
      super.onCreate(savedInstanceState); 
//   Random r = new Random(); 
//   int i1=r.nextInt(70-1)+1; 
//   mNum = i1; 
      mNum = getArguments() != null ? getArguments().getInt("num") : 1; 
     } 

     /** 
     * The Fragment's UI is just a simple text view showing its 
     * instance number. 
     */ 

     @Override 
     public View onCreateView(LayoutInflater inflater, ViewGroup container, 
       Bundle savedInstanceState) { 
      //View v = inflater.inflate(R.layout.fragment_pager_list, container, false); 
      //View tv = v.findViewById(R.id.text2); 
      // switch(mNum){ 
      //IMENSE HERE- deleted 
      //} 
      // return v; 

      View v = inflater.inflate(R.layout.fragment_pager_list, container, false); 
      View tv = v.findViewById(R.id.text2); 
      ((TextView)tv).setText("Fragment #" + mNum); 
      return v; 
     } 




     @Override 
     public void onActivityCreated(Bundle savedInstanceState) { 
      super.onActivityCreated(savedInstanceState); 

     } 




     @Override 
     public void onListItemClick(ListView l, View v, int position, long id) { 
      Log.i("FragmentList", "Item clicked: " + id); 
     } 
    } 
} 

而且我得到這些錯誤：

05-31 19:36:43.219: W/dalvikvm(11094): Unable to resolve superclass of Lcom/ciubotariu/stiaticav1/MainActivity; (537) 
05-31 19:36:43.219: W/dalvikvm(11094): Link of class 'Lcom/ciubotariu/stiaticav1/MainActivity;' failed 
05-31 19:36:43.219: W/dalvikvm(11094): threadid=1: thread exiting with uncaught exception (group=0x40018560) 
05-31 19:36:43.229: E/AndroidRuntime(11094): FATAL EXCEPTION: main 
05-31 19:36:43.229: E/AndroidRuntime(11094): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.ciubotariu.stiaticav1/com.ciubotariu.stiaticav1.MainActivity}: java.lang.ClassNotFoundException: com.ciubotariu.stiaticav1.MainActivity in loader dalvik.system.PathClassLoader[/data/app/com.ciubotariu.stiaticav1-1.apk] 
05-31 19:36:43.229: E/AndroidRuntime(11094): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1575) 
05-31 19:36:43.229: E/AndroidRuntime(11094): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1669) 
05-31 19:36:43.229: E/AndroidRuntime(11094): at android.app.ActivityThread.access$1500(ActivityThread.java:117) 
05-31 19:36:43.229: E/AndroidRuntime(11094): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931) 
05-31 19:36:43.229: E/AndroidRuntime(11094): at android.os.Handler.dispatchMessage(Handler.java:99) 
05-31 19:36:43.229: E/AndroidRuntime(11094): at android.os.Looper.loop(Looper.java:130) 
05-31 19:36:43.229: E/AndroidRuntime(11094): at android.app.ActivityThread.main(ActivityThread.java:3737) 
05-31 19:36:43.229: E/AndroidRuntime(11094): at java.lang.reflect.Method.invokeNative(Native Method) 
05-31 19:36:43.229: E/AndroidRuntime(11094): at java.lang.reflect.Method.invoke(Method.java:507) 
05-31 19:36:43.229: E/AndroidRuntime(11094): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:894) 
05-31 19:36:43.229: E/AndroidRuntime(11094): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:652) 
05-31 19:36:43.229: E/AndroidRuntime(11094): at dalvik.system.NativeStart.main(Native Method) 
05-31 19:36:43.229: E/AndroidRuntime(11094): Caused by: java.lang.ClassNotFoundException: com.ciubotariu.stiaticav1.MainActivity in loader dalvik.system.PathClassLoader[/data/app/com.ciubotariu.stiaticav1-1.apk] 
05-31 19:36:43.229: E/AndroidRuntime(11094): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240) 
05-31 19:36:43.229: E/AndroidRuntime(11094): at java.lang.ClassLoader.loadClass(ClassLoader.java:551) 
05-31 19:36:43.229: E/AndroidRuntime(11094): at java.lang.ClassLoader.loadClass(ClassLoader.java:511) 
05-31 19:36:43.229: E/AndroidRuntime(11094): at android.app.Instrumentation.newActivity(Instrumentation.java:1021) 
05-31 19:36:43.229: E/AndroidRuntime(11094): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1567) 
05-31 19:36:43.229: E/AndroidRuntime(11094): ... 11 more 
05-31 19:36:43.239: E/AndroidRuntime(11094): [Blue Error Handler] Make Debugging Report file for main 
05-31 19:36:43.239: E/AndroidRuntime(11094): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.ciubotariu.stiaticav1/com.ciubotariu.stiaticav1.MainActivity}: java.lang.ClassNotFoundException: com.ciubotariu.stiaticav1.MainActivity in loader dalvik.system.PathClassLoader[/data/app/com.ciubotariu.stiaticav1-1.apk] 
05-31 19:36:43.239: E/AndroidRuntime(11094): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1575) 
05-31 19:36:43.239: E/AndroidRuntime(11094): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1669) 
05-31 19:36:43.239: E/AndroidRuntime(11094): at android.app.ActivityThread.access$1500(ActivityThread.java:117) 
05-31 19:36:43.239: E/AndroidRuntime(11094): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931) 
05-31 19:36:43.239: E/AndroidRuntime(11094): at android.os.Handler.dispatchMessage(Handler.java:99) 
05-31 19:36:43.239: E/AndroidRuntime(11094): at android.os.Looper.loop(Looper.java:130) 
05-31 19:36:43.239: E/AndroidRuntime(11094): at android.app.ActivityThread.main(ActivityThread.java:3737) 
05-31 19:36:43.239: E/AndroidRuntime(11094): at java.lang.reflect.Method.invokeNative(Native Method) 
05-31 19:36:43.239: E/AndroidRuntime(11094): at java.lang.reflect.Method.invoke(Method.java:507) 
05-31 19:36:43.239: E/AndroidRuntime(11094): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:894) 
05-31 19:36:43.239: E/AndroidRuntime(11094): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:652) 
05-31 19:36:43.239: E/AndroidRuntime(11094): at dalvik.system.NativeStart.main(Native Method) 
05-31 19:36:43.239: E/AndroidRuntime(11094): Caused by: java.lang.ClassNotFoundException: com.ciubotariu.stiaticav1.MainActivity in loader dalvik.system.PathClassLoader[/data/app/com.ciubotariu.stiaticav1-1.apk] 
05-31 19:36:43.239: E/AndroidRuntime(11094): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240) 
05-31 19:36:43.239: E/AndroidRuntime(11094): at java.lang.ClassLoader.loadClass(ClassLoader.java:551) 
05-31 19:36:43.239: E/AndroidRuntime(11094): at java.lang.ClassLoader.loadClass(ClassLoader.java:511) 
05-31 19:36:43.239: E/AndroidRuntime(11094): at android.app.Instrumentation.newActivity(Instrumentation.java:1021) 
05-31 19:36:43.239: E/AndroidRuntime(11094): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1567) 
05-31 19:36:43.239: E/AndroidRuntime(11094): ... 11 more 

    Can somebody help me please? It crashes on start. 

我真的很感激。對不起，我的英語不好。 它看起來像你的文章主要是代碼;請添加更多的細節。

Answer 1

您可能忘記了在AndroidManifest.xml文件中聲明MainActivity。