錯誤膨脹內部類視圖

Question

我想膨脹一個內部類視圖，並得到「錯誤膨脹類」的問題。我引用了this post這是有幫助的，但我仍然失去了爲什麼我不能得到這個工作。

這裏是代碼摘錄，我的XML和logcat。

編輯：我也注意到，logcat的狀態的「沒有這樣的方法例外」爲「CupcakeMessageView（上下文，AttributeSet中）時，我顯然有它

感謝所有

public class CupcakeMessage extends Activity { 

    class CupcakeMessageView extends View { 
     private static final int TEXT_SIZE = 12; 
     private static final int X_OFFSET = 15; 

     private Paint mPaint; 

     public CupcakeMessageView(Context context) { 
      super(context); 
     } 

     public CupcakeMessageView(Context context, AttributeSet attrs) { 
      super(context, attrs); 
      mContext = context; 
      ... 
     } 

     more class stuff... 
    } 

    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState);   
     setContentView(R.layout.cupcake_message); 

     ...  
    } 
} 

這裏是！ XML

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:orientation="vertical" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" > 

    <view class="com.cmllc.zcc.CupcakeMessage$CupcakeMessageView" 
     android:id="@+id/cupcake_message_view" 
     android:screenOrientation="portrait" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" /> 
    more views... 

的logcat：

12-19 09:31:24.249: ERROR/AndroidRuntime(5435): FATAL EXCEPTION: main 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.cmllc.zcc/com.cmllc.zcc.CupcakeMessage}: android.view.InflateException: Binary XML file line #7: Error inflating class com.cmllc.zcc.CupcakeMessage$CupcakeMessageView 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663) 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679) 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435):  at android.app.ActivityThread.access$2300(ActivityThread.java:125) 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033) 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435):  at android.os.Handler.dispatchMessage(Handler.java:99) 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435):  at android.os.Looper.loop(Looper.java:123) 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435):  at android.app.ActivityThread.main(ActivityThread.java:4627) 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435):  at java.lang.reflect.Method.invokeNative(Native Method) 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435):  at java.lang.reflect.Method.invoke(Method.java:521) 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435):  at dalvik.system.NativeStart.main(Native Method) 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435): Caused by: android.view.InflateException: Binary XML file line #7: Error inflating class com.cmllc.zcc.CupcakeMessage$CupcakeMessageView 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435):  at android.view.LayoutInflater.createView(LayoutInflater.java:503) 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435):  at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:565) 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435):  at android.view.LayoutInflater.rInflate(LayoutInflater.java:618) 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435):  at android.view.LayoutInflater.inflate(LayoutInflater.java:407) 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435):  at android.view.LayoutInflater.inflate(LayoutInflater.java:320) 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435):  at android.view.LayoutInflater.inflate(LayoutInflater.java:276) 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435):  at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:198) 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435):  at android.app.Activity.setContentView(Activity.java:1647) 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435):  at com.cmllc.zcc.CupcakeMessage.onCreate(CupcakeMessage.java:119) 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627) 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435):  ... 11 more 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435): Caused by: java.lang.NoSuchMethodException: CupcakeMessageView(Context,AttributeSet) 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435):  at java.lang.Class.getMatchingConstructor(Class.java:660) 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435):  at java.lang.Class.getConstructor(Class.java:477) 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435):  at android.view.LayoutInflater.createView(LayoutInflater.java:475) 
12-19 09:31:24.249: ERROR/AndroidRuntime(5435):  ... 21 more 

Answer 1

您需要將public static添加到內部類。

• public因爲它需要從外部可見。
• static因爲如果沒有，你需要有CupcakeMessage來實例化它。

所有相同的我會建議做一個單獨的類View。