簡單按鈕事件不起作用？

Question

嗨，我想問問爲什麼不是我的按鈕不工作點擊我剛剛複製我的其他佈局按鈕代碼的作品，並嘗試創建它在我自己的，但仍然無法正常工作？

這裏是我的代碼

的.java 包com.thesis.logipic;

import android.app.Activity; 
import android.os.Bundle; 
import android.view.View; 
import android.view.Window; 
import android.widget.Button; 


public class Menu extends Activity 
{ 

Button beginner; 

@Override 
protected void onCreate(Bundle MenuButtons) { 
    super.onCreate(MenuButtons); 
} 

public void onClick(View v) 
{ 
    Button clickedButton = (Button) v; 
    switch (clickedButton.getId()) 
    { 

    case R.id.btnBeginner: 
     setContentView(R.layout.gameplay); 
     break; 

    case R.id.btnLearner: 
     setContentView(R.layout.menu); 
     break; 
    } 
} 

} 

的.xml

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

<RelativeLayout 
android:layout_width="match_parent" 
android:layout_height="wrap_content" 
android:orientation="vertical" 
android:background="@drawable/categories" > 

<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" /> 

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

</RelativeLayout> 

</ScrollView> 

</LinearLayout> 

和清單

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

</application> 

</manifest> 

Answer 1

試試這個：

@Override 
protected void onCreate(Bundle MenuButtons) { 
    super(MenuButtons); 
    ((Button) findViewById(R.id.btnBeginner)).setOnClickListener(new OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      setContentView(R.layout.gameplay); 
     } 
    }); 
    ((Button) findViewById(R.id.btnLearner)).setOnClickListener(new OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      setContentView(R.layout.menu); 
     } 
    }); 
} 

Answer 2

您必須修改自己的活動：

import android.app.Activity; 
import android.os.Bundle; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.Button; 

public class Menu extends Activity implements OnClickListener { 

    private Button beginner, learner; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); // Your layout 

     beginner = (Button) findViewById(R.id.btnBeginner); 
     beginner.setOnClickListener(this); 

     learner = (Button) findViewById(R.id.btnLearner); 
     learner.setOnClickListener(this); 

    } 

    @Override 
    public void onClick(View v) { 

     switch (v.getId()) { 

     case R.id.btnBeginner: 
      setContentView(R.layout.gameplay); 
      break; 

     case R.id.btnLearner: 
      setContentView(R.layout.menu); 
      break; 
     } 
    } 

} 

Answer 3

將contentview設置到您的onCreate方法中。

setContentView(R.layout.menu); 

然後將下面的標籤添加到xml Button元素中。

android:onClick="onClick" 

編輯

爲了您的方便。它是您的修改代碼。

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

和XML

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

<RelativeLayout 
android:layout_width="match_parent" 
android:layout_height="wrap_content" 
android:orientation="vertical" 
android:background="@drawable/categories" > 

<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_alignLeft="@+id/btnLearner" 
    android:layout_alignParentTop="true" 
    android:background="@drawable/beginner_menu" 
    android:onClick="onClick" 
    /> 


</RelativeLayout> 

</ScrollView>