Android 自定义控件时出现: Caused by: java.lang.NoSuchMethodException

来源：互联网发布：英语词汇记忆知乎编辑：程序博客网时间：2024/05/17 06:34

错误日志:

Caused by: android.view.InflateException: Binary XML file line #20: Error inflating class sourceforge.titlelan.VisualizerView            at android.view.LayoutInflater.createView(LayoutInflater.java:606)            at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:699)            at android.view.LayoutInflater.rInflate(LayoutInflater.java:758)            at android.view.LayoutInflater.inflate(LayoutInflater.java:495)            at android.view.LayoutInflater.inflate(LayoutInflater.java:400)            at android.view.LayoutInflater.inflate(LayoutInflater.java:353)            at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:290)            at android.app.Activity.setContentView(Activity.java:1943)            at sourceforge.titlelan.MainActivity.onCreate(MainActivity.java:31)            at android.app.Activity.performCreate(Activity.java:5245)            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2164)            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2249)            at android.app.ActivityThread.access$800(ActivityThread.java:141)            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1212)            at android.os.Handler.dispatchMessage(Handler.java:102)            at android.os.Looper.loop(Looper.java:136)            at android.app.ActivityThread.main(ActivityThread.java:5052)            at java.lang.reflect.Method.invokeNative(Native Method)            at java.lang.reflect.Method.invoke(Method.java:515)            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:609)            at dalvik.system.NativeStart.main(Native Method)     Caused by: java.lang.NoSuchMethodException: <init> [class android.content.Context, interface android.util.AttributeSet]            at java.lang.Class.getConstructorOrMethod(Class.java:472)            at java.lang.Class.getConstructor(Class.java:446)            at android.view.LayoutInflater.createView(LayoutInflater.java:571)            at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:699)            at android.view.LayoutInflater.rInflate(LayoutInflater.java:758)            at android.view.LayoutInflater.inflate(LayoutInflater.java:495)            at android.view.LayoutInflater.inflate(LayoutInflater.java:400)            at android.view.LayoutInflater.inflate(LayoutInflater.java:353)            at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:290)            at android.app.Activity.setContentView(Activity.java:1943)            at sourceforge.titlelan.MainActivity.onCreate(MainActivity.java:31)            at android.app.Activity.performCreate(Activity.java:5245)            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2164)            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2249)            at android.app.ActivityThread.access$800(ActivityThread.java:141)            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1212)            at android.os.Handler.dispatchMessage(Handler.java:102)            at android.os.Looper.loop(Looper.java:136)            at android.app.ActivityThread.main(ActivityThread.java:5052)            at java.lang.reflect.Method.invokeNative(Native Method)            at java.lang.reflect.Method.invoke(Method.java:515)            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:609)            at dalvik.system.NativeStart.main(Native Method)

上面的VisualizerView是我自定义的控件,而控件只有下面一个构造方法而已

public VisualizerView(Context context) {        super(context);        init();    }

解决方案:

上面的构造方法应该有两个:

public VisualizerView(Context context) {      this(context, null);    }    public VisualizerView(Context context, AttributeSet attrs) {        super(context, attrs);        init();    }

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