java.lang.IllegalStateException：找不到方法的onClick（視圖）

Question

嗨，我是新到Android編程，我想不出我的錯誤。 IV」一直想這一點，因爲在昨天執行正確的，當我把它放在我點擊我的activity_thesis.xml播放之後，但在menu.xml文件它顯示logcat的這個錯誤，它顯示一個消息框，指出「應用程序的Droid（進程.com.sample.droid）已意外停止，請重試「。這裏是我的代碼

Menu.java

public class Menu extends Activity 
{ 

Button beginner, learner; 

@Override 
protected void onCreate(Bundle MenuButtons) 
{ 
    requestWindowFeature(Window.FEATURE_NO_TITLE); 
    super.onCreate(MenuButtons); 
    setContentView(R.layout.menu); 

    beginner = (Button) findViewById(R.id.btnBeginner); 
    learner = (Button) findViewById(R.id.btnLearner); 

    beginner.setOnClickListener(new View.OnClickListener() 
    { 

     @Override 
     public void onClick(View arg0) 
     { 
      // TODO Auto-generated method stub 
      setContentView(R.layout.beginner); 
     } 
    }); 
    learner.setOnClickListener(new View.OnClickListener() 
    { 

     @Override 
     public void onClick(View arg0) 
     { 
      // TODO Auto-generated method stub 
      setContentView(R.layout.gameplay); 
     } 
    }); 
} 
} 

menu.xml文件

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:orientation="vertical" 
android:background="@drawable/categories" > 

<ScrollView android:layout_width="match_parent" android:layout_height="match_parent"> 

<RelativeLayout 
android:layout_width="match_parent" 
android:layout_height="wrap_content" 
android:orientation="vertical" > 

<Button 
    android:id="@+id/btnLearner" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_below="@+id/btnBeginner" 
    android:layout_centerHorizontal="true" 
    android:background="@drawable/learner_menu" 
    android:onClick="onClick" /> 

<Button 
    android:id="@+id/btnBeginner" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignParentTop="true" 
    android:background="@drawable/beginner_menu" 
    android:onClick="onClick" /> 

</RelativeLayout> 

</ScrollView> 

</LinearLayout> 

AndroidManifest.xml中

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
package="com.thesis.logipic" 
android:versionCode="1" 
android:versionName="1.0" > 

<uses-sdk 
    android:minSdkVersion="8" 
    android:targetSdkVersion="17" /> 

<application 
    android:allowBackup="true" 
    android:icon="@drawable/ic_launcher" 
    android:label="@string/app_name" 
    android:theme="@style/AppTheme" > 

    <activity 
     android:name=".Splash" 
     android:label="@string/app_name" > 
     <intent-filter> 
      <action android:name="android.intent.action.MAIN" /> 
      <category android:name="android.intent.category.LAUNCHER" /> 
     </intent-filter> 
    </activity> 

    <activity 
     android:name=".ThesisActivity" 
     android:label="@string/app_name" > 
     <intent-filter> 
      <action android:name="com.thesis.logipic.THESISACTIVITY" /> 
      <category android:name="android.intent.category.DEFAULT" /> 
     </intent-filter> 
    </activity> 

    <activity 
     android:name=".Menu" 
     android:label="@string/app_name" > 
     <intent-filter> 
      <action android:name="com.thesis.logipic.MENU" /> 
      <category android:name="android.intent.category.DEFAULT" /> 
     </intent-filter> 
    </activity> 

    <activity 
     android:name=".Gameplay" 
     android:label="@string/app_name" > 
     <intent-filter> 
      <action android:name="com.thesis.logipic.GAMEPLAY" /> 
      <category android:name="android.intent.category.DEFAULT" /> 
     </intent-filter> 
    </activity> 

    <activity 
     android:name=".Beginner" 
     android:label="@string/app_name" > 
     <intent-filter> 
      <action android:name="com.thesis.logipic.BEGINNER" /> 
      <category android:name="android.intent.category.DEFAULT" /> 
     </intent-filter> 
    </activity> 

</application> 

</manifest> 

和的logcat

10-06 15:40:19.995: D/AndroidRuntime(342): Shutting down VM 
10-06 15:40:19.995: W/dalvikvm(342): threadid=1: thread exiting with uncaught exception (group=0x4001d800) 
10-06 15:40:20.014: E/AndroidRuntime(342): FATAL EXCEPTION: main 
10-06 15:40:20.014: E/AndroidRuntime(342): java.lang.IllegalStateException: Could not find a method onClick(View) in the activity class com.thesis.logipic.ThesisActivity for onClick handler on view class android.widget.Button with id 'btnBeginner' 
10-06 15:40:20.014: E/AndroidRuntime(342): at android.view.View$1.onClick(View.java:2059) 
10-06 15:40:20.014: E/AndroidRuntime(342): at android.view.View.performClick(View.java:2408) 
10-06 15:40:20.014: E/AndroidRuntime(342): at android.view.View$PerformClick.run(View.java:8816) 
10-06 15:40:20.014: E/AndroidRuntime(342): at android.os.Handler.handleCallback(Handler.java:587) 
10-06 15:40:20.014: E/AndroidRuntime(342): at android.os.Handler.dispatchMessage(Handler.java:92) 
10-06 15:40:20.014: E/AndroidRuntime(342): at android.os.Looper.loop(Looper.java:123) 
10-06 15:40:20.014: E/AndroidRuntime(342): at android.app.ActivityThread.main(ActivityThread.java:4627) 
10-06 15:40:20.014: E/AndroidRuntime(342): at java.lang.reflect.Method.invokeNative(Native Method) 
10-06 15:40:20.014: E/AndroidRuntime(342): at java.lang.reflect.Method.invoke(Method.java:521) 
10-06 15:40:20.014: E/AndroidRuntime(342): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 
10-06 15:40:20.014: E/AndroidRuntime(342): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 
10-06 15:40:20.014: E/AndroidRuntime(342): at dalvik.system.NativeStart.main(Native Method) 
10-06 15:40:20.014: E/AndroidRuntime(342): Caused by: java.lang.NoSuchMethodException: onClick 
10-06 15:40:20.014: E/AndroidRuntime(342): at java.lang.ClassCache.findMethodByName(ClassCache.java:308) 
10-06 15:40:20.014: E/AndroidRuntime(342): at java.lang.Class.getMethod(Class.java:985) 
10-06 15:40:20.014: E/AndroidRuntime(342): at android.view.View$1.onClick(View.java:2052) 
10-06 15:40:20.014: E/AndroidRuntime(342): ... 11 more 

Answer 1

從menu.xml文件

android:onClick="onClick" 

刪除此行的代碼，您所做的一切錯誤是您創建按鈕的對象還並有setOnclicklistener它，這樣你就創建了一個監聽器兩次。無論是在您的活動文件中添加

public void onClick(View v){ 

} 

，並使用

android:onClick="onClick" 

使用它，或者使用已經正在使用的一個。但只能使用單一方式來處理點擊偵聽器。您的建議