我在 main.xml 中声明了以下 Button
<Button android:name="@+id/clickedStartService"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:onClick="clickedStartService"
android:text="Start"
/>
<Button android:name="@+id/clickedStopService"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:onClick="clickedStopService"
android:text="Stop"
/>
我在活动中有以下方法..
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
public void clickedStartService(View v)
{
startService(new Intent(this, LocalService.class));
}
public void clickedStopService(View v)
{
stopService(new Intent(this, LocalService.class));
}
单击按钮时出现以下错误。我已经尝试在我的 IDE 中重建项目,并且还重新启动了模拟器,但同样的错误再次出现。我已经关注了Android 开发者网站上的文档,并且我已经在一个单独的项目中进行了这个工作,我只是无法让它在这里工作..
ERROR/AndroidRuntime(335): FATAL EXCEPTION: main
java.lang.IllegalStateException: Could not find a method clickedStartService(View) in the activity class com.jameselsey.observerpattern.MyApp for onClick handler on view class android.widget.Button
at android.view.View$1.onClick(View.java:2059)
at android.view.View.performClick(View.java:2408)
at android.view.View$PerformClick.run(View.java:8816)
at android.os.Handler.handleCallback(Handler.java:587)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:4627)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:521)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NoSuchMethodException
at java.lang.Class.getDeclaredMethods(Native Method)
at java.lang.ClassCache.getDeclaredPublicMethods(ClassCache.java:166)
at java.lang.ClassCache.getDeclaredMethods(ClassCache.java:179)
at java.lang.ClassCache.findAllMethods(ClassCache.java:249)
at java.lang.ClassCache.getFullListOfMethods(ClassCache.java:223)
at java.lang.ClassCache.getAllPublicMethods(ClassCache.java:204)
at java.lang.Class.getMethod(Class.java:984)
at android.view.View$1.onClick(View.java:2052)
... 11 more