自定义listView出错

自定义一个如下listview时

package com.example.test;import android.content.Context;import android.graphics.Canvas;import android.graphics.Paint;import android.text.Layout;import android.util.AttributeSet;import android.widget.ListView;public class SpinListView extends ListView{public SpinListView(Context context) {super(context);// TODO Auto-generated constructor stub}@Overrideprotected void onDraw(Canvas canvas) {// TODO Auto-generated method stubsuper.onDraw(canvas);Paint paint = new Paint(); final android.view.ViewGroup.LayoutParams layout = getLayoutParams(); final int left = getListPaddingLeft();        final int top = getListPaddingTop();paint.setColor(android.graphics.Color.BLACK);canvas.drawLine(left + layout.width, top, left + layout.width + 4, top + 4, paint);canvas.drawLine(left + layout.width + 4, top + 4, left + layout.width, top + 8 , paint);}}

出现如下错误:

D/dalvikvm( 9962): Debugger has detached; object registry had 1 entriesD/AndroidRuntime( 9972): Shutting down VMW/dalvikvm( 9972): threadid=1: thread exiting with uncaught exception (group=0x41124930)E/AndroidRuntime( 9972): FATAL EXCEPTION: mainE/AndroidRuntime( 9972): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.test/com.example.test.MainActivity}: android.view.InflateException: Binary XML file line #11: Error inflating class com.example.test.SpinListViewE/AndroidRuntime( 9972): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)E/AndroidRuntime( 9972): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)E/AndroidRuntime( 9972): at android.app.ActivityThread.access$600(ActivityThread.java:141)E/AndroidRuntime( 9972): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)E/AndroidRuntime( 9972): at android.os.Handler.dispatchMessage(Handler.java:99)E/AndroidRuntime( 9972): at android.os.Looper.loop(Looper.java:137)E/AndroidRuntime( 9972): at android.app.ActivityThread.main(ActivityThread.java:5041)E/AndroidRuntime( 9972): at java.lang.reflect.Method.invokeNative(Native Method)E/AndroidRuntime( 9972): at java.lang.reflect.Method.invoke(Method.java:511)E/AndroidRuntime( 9972): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)E/AndroidRuntime( 9972): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)E/AndroidRuntime( 9972): at dalvik.system.NativeStart.main(Native Method)E/AndroidRuntime( 9972): Caused by: android.view.InflateException: Binary XML file line #11: Error inflating class com.example.test.SpinListViewE/AndroidRuntime( 9972): at android.view.LayoutInflater.createView(LayoutInflater.java:596)E/AndroidRuntime( 9972): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:687)E/AndroidRuntime( 9972): at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)E/AndroidRuntime( 9972): at android.view.LayoutInflater.inflate(LayoutInflater.java:489)E/AndroidRuntime( 9972): at android.view.LayoutInflater.inflate(LayoutInflater.java:396)E/AndroidRuntime( 9972): at android.view.LayoutInflater.inflate(LayoutInflater.java:352)E/AndroidRuntime( 9972): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:270)E/AndroidRuntime( 9972): at android.app.Activity.setContentView(Activity.java:1881)E/AndroidRuntime( 9972): at com.example.test.MainActivity.onCreate(MainActivity.java:12)E/AndroidRuntime( 9972): at android.app.Activity.performCreate(Activity.java:5104)E/AndroidRuntime( 9972): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)E/AndroidRuntime( 9972): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)E/AndroidRuntime( 9972): ... 11 moreE/AndroidRuntime( 9972): Caused by: java.lang.NoSuchMethodException: <init> [class android.content.Context, interface android.util.AttributeSet]E/AndroidRuntime( 9972): at java.lang.Class.getConstructorOrMethod(Class.java:460)E/AndroidRuntime( 9972): at java.lang.Class.getConstructor(Class.java:431)E/AndroidRuntime( 9972): at android.view.LayoutInflater.createView(LayoutInflater.java:561)E/AndroidRuntime( 9972): ... 22 moreW/ActivityManager(  359):   Force finishing activity com.example.test/.MainActivityI/Process ( 9972): Sending signal. PID: 9972 SIG: 9I/ActivityManager(  359): Process com.example.test (pid 9972) has died.W/InputMethodManagerService(  359): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@4193d268 attribute=null, token = android.os.BinderProxy@418acda8

这是由于有一个构造函数没有定义，添加如下构造函数：

public SpinListView(Context context, AttributeSet attrs) {super(context, attrs);// TODO Auto-generated constructor stub}