錯誤膨脹二進制XML文件

Question

我想在xml中膨脹自定義類（scrollView）然後這個錯誤顯示任何人都可以解釋我的代碼是怎麼回事？

我試圖禁用滾動特定點的滾動，然後再次啓用它。

partnerScrollView = (LockableScrollView) findViewById(R.id.partnerScrollView); 


    <com.mibag.utils.LockableScrollView 
     android:id="@+id/partnerScrollView" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:fillViewport="true" > 

    </com.mibag.utils.LockableScrollView> 



08-09 15:38:03.270: E/AndroidRuntime(22013): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.mibag/com.mibag.PartnerListDetail_Activity}: android.view.InflateException: Binary XML file line #9: Error inflating class com.mibag.utils.LockableScrollView 
    08-09 15:38:03.270: E/AndroidRuntime(22013): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2345) 
    08-09 15:38:03.270: E/AndroidRuntime(22013): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2405) 
    08-09 15:38:03.270: E/AndroidRuntime(22013): at android.app.ActivityThread.access$800(ActivityThread.java:149) 
    08-09 15:38:03.270: E/AndroidRuntime(22013): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1324) 
    08-09 15:38:03.270: E/AndroidRuntime(22013): at android.os.Handler.dispatchMessage(Handler.java:102) 
    08-09 15:38:03.270: E/AndroidRuntime(22013): at android.os.Looper.loop(Looper.java:211) 
    08-09 15:38:03.270: E/AndroidRuntime(22013): at android.app.ActivityThread.main(ActivityThread.java:5317) 
    08-09 15:38:03.270: E/AndroidRuntime(22013): at java.lang.reflect.Method.invoke(Native Method) 
    08-09 15:38:03.270: E/AndroidRuntime(22013): at java.lang.reflect.Method.invoke(Method.java:372) 
    08-09 15:38:03.270: E/AndroidRuntime(22013): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1016) 
    08-09 15:38:03.270: E/AndroidRuntime(22013): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:811) 
    08-09 15:38:03.270: E/AndroidRuntime(22013): Caused by: android.view.InflateException: Binary XML file line #9: Error inflating class com.mibag.utils.LockableScrollView 
    08-09 15:38:03.270: E/AndroidRuntime(22013): at android.view.LayoutInflater.createView(LayoutInflater.java:616) 
    08-09 15:38:03.270: E/AndroidRuntime(22013): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:743) 
    08-09 15:38:03.270: E/AndroidRuntime(22013): at android.view.LayoutInflater.rInflate(LayoutInflater.java:806) 
    08-09 15:38:03.270: E/AndroidRuntime(22013): at android.view.LayoutInflater.inflate(LayoutInflater.java:504) 
    08-09 15:38:03.270: E/AndroidRuntime(22013): at android.view.LayoutInflater.inflate(LayoutInflater.java:414) 
    08-09 15:38:03.270: E/AndroidRuntime(22013): at android.view.LayoutInflater.inflate(LayoutInflater.java:365) 
    08-09 15:38:03.270: E/AndroidRuntime(22013): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:381) 
    08-09 15:38:03.270: E/AndroidRuntime(22013): at android.app.Activity.setContentView(Activity.java:2144) 
    08-09 15:38:03.270: E/AndroidRuntime(22013): at com.mibag.PartnerListDetail_Activity.onCreate(PartnerListDetail_Activity.java:201) 
    08-09 15:38:03.270: E/AndroidRuntime(22013): at android.app.Activity.performCreate(Activity.java:5933) 
    08-09 15:38:03.270: E/AndroidRuntime(22013): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105) 
    08-09 15:38:03.270: E/AndroidRuntime(22013): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2298) 
    08-09 15:38:03.270: E/AndroidRuntime(22013): ... 10 more 
    08-09 15:38:03.270: E/AndroidRuntime(22013): Caused by: java.lang.NoSuchMethodException: <init> [class android.content.Context, interface android.util.AttributeSet] 
    08-09 15:38:03.270: E/AndroidRuntime(22013): at java.lang.Class.getConstructor(Class.java:531) 
    08-09 15:38:03.270: E/AndroidRuntime(22013): at java.lang.Class.getConstructor(Class.java:495) 
    08-09 15:38:03.270: E/AndroidRuntime(22013): at android.view.LayoutInflater.createView(LayoutInflater.java:580) 

Answer 1

我並修復它是在這條線： 08-09 15：38：03.270：E/AndroidRuntime（22013）：java.lang.NoSuchMethodException：致[類android.content.Context ，interface android.util.AttributeSet] 我必須在自定義類中添加這個構造函數。

public LockableScrollView(Context context, AttributeSet attrs, 
     int defStyleAttr, int defStyleRes) { 
    super(context, attrs, defStyleAttr, defStyleRes); 
    // TODO Auto-generated constructor stub 
}