Android應用程序總是崩潰[Eclipse中]

我有這樣的代碼：Android應用程序總是崩潰[Eclipse中]

public class MainActivity extends ActionBarActivity { 
    TextView tv; 
    Button b1; 
    String answer; 
    RadioButton r1,r2,r3; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.fragment_main); 
     tv = (TextView) findViewById(R.id.textView1); 
     b1 =(Button) findViewById(R.id.button1); 
     r1 = (RadioButton) findViewById(R.id.radioButton1); 
     r2 = (RadioButton) findViewById(R.id.radioButton2); 
     r3 = (RadioButton) findViewById(R.id.radioButton3);   
     b1.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       if (r1.isChecked() == true) { 
        answer=null; 

       }else if (r2.isChecked() == true){ 
        answer=null; 
       }else if (r3.isChecked() == true){ 
        answer="correct"; 
       }else{ 
        answer="incorrect"; 
       } 
       Intent i = new Intent(MainActivity.this , receiver.class); 
       i.putExtra("key" , answer); 
        startActivity(i); 

      } 
     });

但問題是應用程序一直在啓動時崩潰。這裏是我的logcat的數據：

04-03 19:56:45.955: I/dalvikvm(620): Could not find method android.content.pm.PackageManager.getActivityLogo, referenced from method android.support.v7.internal.widget.ActionBarView.<init> 
04-03 19:56:45.955: W/dalvikvm(620): VFY: unable to resolve virtual method 320: Landroid/content/pm/PackageManager;.getActivityLogo (Landroid/content/ComponentName;)Landroid/graphics/drawable/Drawable; 
04-03 19:56:45.955: D/dalvikvm(620): VFY: replacing opcode 0x6e at 0x008b 
04-03 19:56:45.955: I/dalvikvm(620): Could not find method android.content.pm.ApplicationInfo.loadLogo, referenced from method android.support.v7.internal.widget.ActionBarView.<init> 
04-03 19:56:45.955: W/dalvikvm(620): VFY: unable to resolve virtual method 316: Landroid/content/pm/ApplicationInfo;.loadLogo (Landroid/content/pm/PackageManager;)Landroid/graphics/drawable/Drawable; 
04-03 19:56:45.955: D/dalvikvm(620): VFY: replacing opcode 0x6e at 0x0099 
04-03 19:56:45.965: D/dalvikvm(620): VFY: dead code 0x008e-0092 in Landroid/support/v7/internal/widget/ActionBarView;.<init> (Landroid/content/Context;Landroid/util/AttributeSet;)V 
04-03 19:56:45.965: D/dalvikvm(620): VFY: dead code 0x009c-00a0 in Landroid/support/v7/internal/widget/ActionBarView;.<init> (Landroid/content/Context;Landroid/util/AttributeSet;)V 
04-03 19:56:46.115: E/FragmentManager(620): No view found for id 0x7f05003c (com.example.radiogroup:id/container) for fragment PlaceholderFragment{4a312d58 #0 id=0x7f05003c} 
04-03 19:56:46.115: E/FragmentManager(620): Activity state: 
04-03 19:56:46.115: D/FragmentManager(620): Local FragmentActivity 4a2f4a18 State: 
04-03 19:56:46.115: D/FragmentManager(620):  mCreated=truemResumed=false mStopped=false mReallyStopped=false 
04-03 19:56:46.115: D/FragmentManager(620):  mLoadersStarted=false 
04-03 19:56:46.115: D/FragmentManager(620): Active Fragments in 4a2f59e8: 
04-03 19:56:46.125: D/FragmentManager(620):  #0: PlaceholderFragment{4a312d58 #0 id=0x7f05003c} 
04-03 19:56:46.125: D/FragmentManager(620):  mFragmentId=#7f05003c mContainerId=#7f05003c mTag=null 
04-03 19:56:46.125: D/FragmentManager(620):  mState=0 mIndex=0 mWho=android:fragment:0 mBackStackNesting=0 
04-03 19:56:46.125: D/FragmentManager(620):  mAdded=true mRemoving=false mResumed=false mFromLayout=false mInLayout=false 
04-03 19:56:46.125: D/FragmentManager(620):  mHidden=false mDetached=false mMenuVisible=true mHasMenu=false 
04-03 19:56:46.125: D/FragmentManager(620):  mRetainInstance=false mRetaining=false mUserVisibleHint=true 
04-03 19:56:46.136: D/FragmentManager(620):  mFragmentManager=FragmentManager{4a2f59e8 in MainActivity{4a2f4a18}} 
04-03 19:56:46.136: D/FragmentManager(620):  [email protected] 
04-03 19:56:46.136: D/FragmentManager(620): Added Fragments: 
04-03 19:56:46.136: D/FragmentManager(620):  #0: PlaceholderFragment{4a312d58 #0 id=0x7f05003c} 
04-03 19:56:46.136: D/FragmentManager(620): FragmentManager misc state: 
04-03 19:56:46.136: D/FragmentManager(620):  [email protected] 
04-03 19:56:46.145: D/FragmentManager(620):  [email protected] 
04-03 19:56:46.145: D/FragmentManager(620):  mCurState=2 mStateSaved=false mDestroyed=false 
04-03 19:56:46.145: D/FragmentManager(620): View Hierarchy: 
04-03 19:56:46.145: D/FragmentManager(620):  com.android.internal.policy.impl.PhoneWindow$DecorView{4a2f9580 V.E..... ... 0,0-0,0} 
04-03 19:56:46.145: D/FragmentManager(620):  android.widget.FrameLayout{4a2f9ec0 V.ED.... ... 0,0-0,0} 
04-03 19:56:46.145: D/FragmentManager(620):   android.widget.LinearLayout{4a2fabe0 V.E..... ... 0,0-0,0} 
04-03 19:56:46.155: D/FragmentManager(620):   android.support.v7.internal.widget.ActionBarContainer{4a2fb678 V.ED.... ... 0,0-0,0 #7f05001b app:id/action_bar_container} 
04-03 19:56:46.155: D/FragmentManager(620):    android.support.v7.internal.widget.ActionBarView{4a304040 V.E..... ... 0,0-0,0 #7f05001c app:id/action_bar} 
04-03 19:56:46.155: D/FragmentManager(620):    android.widget.LinearLayout{4a308948 G.....C. ... 0,0-0,0} 
04-03 19:56:46.155: D/FragmentManager(620):     android.widget.ImageView{4a309298 G.ED.... ... 0,0-0,0 #7f050021 app:id/up} 
04-03 19:56:46.155: D/FragmentManager(620):     android.widget.LinearLayout{4a3094c8 V.E..... ... 0,0-0,0} 
04-03 19:56:46.155: D/FragmentManager(620):     android.widget.TextView{4a309948 V.ED.... ... 0,0-0,0 #7f050022 app:id/action_bar_title} 
04-03 19:56:46.165: D/FragmentManager(620):     android.widget.TextView{4a30ab88 G.ED.... ... 0,0-0,0 #7f050023 app:id/action_bar_subtitle} 
04-03 19:56:46.165: D/FragmentManager(620):    android.support.v7.internal.widget.ActionBarView$HomeView{4a304f38 VFE...C. ... 0,0-0,0} 
04-03 19:56:46.165: D/FragmentManager(620):     android.widget.ImageView{4a307238 G.ED.... ... 0,0-0,0 #7f050021 app:id/up} 
04-03 19:56:46.165: D/FragmentManager(620):     android.widget.ImageView{4a307798 V.ED.... ... 0,0-0,0 #7f050014 app:id/home} 
04-03 19:56:46.165: D/FragmentManager(620):    android.support.v7.internal.widget.ActionBarContextView{4a30b558 G.E..... ... 0,0-0,0 #7f05001d app:id/action_context_bar} 
04-03 19:56:46.175: D/FragmentManager(620):   android.widget.FrameLayout{4a30bef0 V.ED.... ... 0,0-0,0 #1020002 android:id/content} 
04-03 19:56:46.175: D/FragmentManager(620):    android.widget.RelativeLayout{4a30d508 V.E..... ... 0,0-0,0} 
04-03 19:56:46.175: D/FragmentManager(620):    android.widget.RadioGroup{4a30dc08 V.E..... ... 0,0-0,0 #7f05003d app:id/radioGroup1} 
04-03 19:56:46.175: D/FragmentManager(620):    android.widget.TextView{4a30e108 V.ED.... ... 0,0-0,0 #7f05003e app:id/textView1} 
04-03 19:56:46.175: D/FragmentManager(620):    android.widget.Button{4a30e878 VFED..C. ... 0,0-0,0 #7f05003f app:id/button1} 
04-03 19:56:46.175: D/FragmentManager(620):    android.widget.RadioButton{4a30f470 VFED..C. ... 0,0-0,0 #7f050040 app:id/radioButton1} 
04-03 19:56:46.185: D/FragmentManager(620):    android.widget.RadioButton{4a310170 VFED..C. ... 0,0-0,0 #7f050041 app:id/radioButton2} 
04-03 19:56:46.185: D/FragmentManager(620):    android.widget.RadioButton{4a310b10 VFED..C. ... 0,0-0,0 #7f050042 app:id/radioButton3} 
04-03 19:56:46.185: D/FragmentManager(620):   android.support.v7.internal.widget.ActionBarContainer{4a30c198 G.ED.... ... 0,0-0,0 #7f05001e app:id/split_action_bar} 
04-03 19:56:46.185: D/AndroidRuntime(620): Shutting down VM 
04-03 19:56:46.185: W/dalvikvm(620): threadid=1: thread exiting with uncaught exception (group=0x4001d800) 
04-03 19:56:46.196: E/AndroidRuntime(620): FATAL EXCEPTION: main 
04-03 19:56:46.196: E/AndroidRuntime(620): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.radiogroup/com.example.radiogroup.MainActivity}: java.lang.IllegalArgumentException: No view found for id 0x7f05003c (com.example.radiogroup:id/container) for fragment PlaceholderFragment{4a312d58 #0 id=0x7f05003c} 
04-03 19:56:46.196: E/AndroidRuntime(620): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663) 
04-03 19:56:46.196: E/AndroidRuntime(620): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679) 
04-03 19:56:46.196: E/AndroidRuntime(620): at android.app.ActivityThread.access$2300(ActivityThread.java:125) 
04-03 19:56:46.196: E/AndroidRuntime(620): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033) 
04-03 19:56:46.196: E/AndroidRuntime(620): at android.os.Handler.dispatchMessage(Handler.java:99) 
04-03 19:56:46.196: E/AndroidRuntime(620): at android.os.Looper.loop(Looper.java:123) 
04-03 19:56:46.196: E/AndroidRuntime(620): at android.app.ActivityThread.main(ActivityThread.java:4627) 
04-03 19:56:46.196: E/AndroidRuntime(620): at java.lang.reflect.Method.invokeNative(Native Method) 
04-03 19:56:46.196: E/AndroidRuntime(620): at java.lang.reflect.Method.invoke(Method.java:521) 
04-03 19:56:46.196: E/AndroidRuntime(620): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 
04-03 19:56:46.196: E/AndroidRuntime(620): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 
04-03 19:56:46.196: E/AndroidRuntime(620): at dalvik.system.NativeStart.main(Native Method) 
04-03 19:56:46.196: E/AndroidRuntime(620): Caused by: java.lang.IllegalArgumentException: No view found for id 0x7f05003c (com.example.radiogroup:id/container) for fragment PlaceholderFragment{4a312d58 #0 id=0x7f05003c} 
04-03 19:56:46.196: E/AndroidRuntime(620): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:930) 
04-03 19:56:46.196: E/AndroidRuntime(620): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1115) 
04-03 19:56:46.196: E/AndroidRuntime(620): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682) 
04-03 19:56:46.196: E/AndroidRuntime(620): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1478) 
04-03 19:56:46.196: E/AndroidRuntime(620): at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:570) 
04-03 19:56:46.196: E/AndroidRuntime(620): at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1129) 
04-03 19:56:46.196: E/AndroidRuntime(620): at android.app.Activity.performStart(Activity.java:3781) 
04-03 19:56:46.196: E/AndroidRuntime(620): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2636) 
04-03 19:56:46.196: E/AndroidRuntime(620): ... 11 more

那麼，什麼是這個錯誤的可能原因是什麼？並提前致謝。我爲我的弱語言道歉。

更新：fragment_main.xml：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:paddingBottom="@dimen/activity_vertical_margin" 
    android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin" 
    tools:context="com.example.radiogroup.MainActivity$PlaceholderFragment" > 

    <RadioGroup 
     android:id="@+id/radioGroup1" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentLeft="true" 
     android:layout_alignParentTop="true" 
     android:layout_marginLeft="82dp" 
     android:layout_marginTop="136dp" > 
    </RadioGroup> 

    <TextView 
     android:id="@+id/textView1" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentTop="true" 
     android:layout_centerHorizontal="true" 
     android:layout_marginTop="21dp" 
     android:text="Which Vitamin helps clotting the blood ?" 
     android:textSize="30sp" /> 

    <Button 
     android:id="@+id/button1" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignLeft="@+id/radioGroup1" 
     android:layout_below="@+id/radioGroup1" 
     android:layout_marginTop="102dp" 
     android:text="Send" 
     android:textSize="30sp" /> 

    <RadioButton 
     android:id="@+id/radioButton1" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignBottom="@+id/radioGroup1" 
     android:layout_alignRight="@+id/button1" 
     android:text="RadioButton" /> 

    <RadioButton 
     android:id="@+id/radioButton2" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignLeft="@+id/radioGroup1" 
     android:layout_below="@+id/radioGroup1" 
     android:layout_marginTop="16dp" 
     android:text="RadioButton" /> 

    <RadioButton 
     android:id="@+id/radioButton3" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignRight="@+id/button1" 
     android:layout_below="@+id/radioButton2" 
     android:text="RadioButton" /> 

</RelativeLayout>

來源

2014-04-03 AlphaCode

請發佈您的fragment_main xml – Spidy

我認爲顯示您的佈局文件將有助於人們瞭解錯誤。 –

我剛剛將它添加到主帖子中。感謝您的提示 – AlphaCode

看起來你已經改變了setContentView(R.layout.activity_main)到setContentView(R.layout.fragment_main)但還有模板生成PlaceholderFragment交易，試圖把片段鑑於R.id.container在主活動佈局和該視圖未找到。

要麼刪除交易，要麼按照模板要求的方式使用分段佈局：分段活動和分段佈局並設置分段onCreateView()中的聽衆等。有關更多信息，請參閱NullPointerException accessing views in onCreate() 。

來源

2014-05-20 05:18:18 laalto

Android應用程序總是崩潰[Eclipse中]

回答

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