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。我尝试在IDE中重建项目并重新启动模拟器,但重新出现相同的错误。我已经按照Android developers网站上的文档进行了操作,而且我已经在一个单独的项目中工作了,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
答案 0 :(得分:3)
在Android 1.6中添加了XML点击侦听器。检查您的AndroidManifest以验证您的min SDK版本未设置为cupcake(1.5或API level 3) -
如果您将Eclipse与ADT插件一起使用,还要检查项目属性&gt; Android并检查构建目标,确保它是甜甜圈或更高。
答案 1 :(得分:3)
你需要这样做:
import android.view.View
而不是:
import view.View