我正在做一個非常簡單的應用程序,它必須在用戶點擊一個按鈕時執行一個動作。我試圖用OnClickListener來做到這一點,但這會導致程序在執行期間停止運行 。我尋找不同的解決方案,但沒有任何可以幫助我。 我發現問題位於哪裏放置的行:Button.setOnClickListenerAndroid:Button.setOnClickListener在運行時產生錯誤
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(0x7f030000);
Button b = (Button) findViewById (0x7f05000a) ;
b.setOnClickListener((android.view.View.OnClickListener) buttonL) ;
}
private OnClickListener buttonL = new OnClickListener () {
@Override
public void onClick(DialogInterface arg0, int arg1) {
//perform action}
};
通過logcat的給出的誤差:
02-04 19:45:46.101: E/AndroidRuntime(27043): FATAL EXCEPTION: main
02-04 19:45:46.101: E/AndroidRuntime(27043): java.lang.RuntimeException: Unable to start activity ComponentInfo{me.sms.smsReminder/me.sms.smsReminder.SmsReminderActivity}: java.lang.ClassCastException: me.sms.smsReminder.SmsReminderActivity$1
02-04 19:45:46.101: E/AndroidRuntime(27043): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1830)
02-04 19:45:46.101: E/AndroidRuntime(27043): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1851)
02-04 19:45:46.101: E/AndroidRuntime(27043): at android.app.ActivityThread.access$1500(ActivityThread.java:132)
02-04 19:45:46.101: E/AndroidRuntime(27043): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1038)
02-04 19:45:46.101: E/AndroidRuntime(27043): at android.os.Handler.dispatchMessage(Handler.java:99)
02-04 19:45:46.101: E/AndroidRuntime(27043): at android.os.Looper.loop(Looper.java:150)
02-04 19:45:46.101: E/AndroidRuntime(27043): at android.app.ActivityThread.main(ActivityThread.java:4277)
02-04 19:45:46.101: E/AndroidRuntime(27043): at java.lang.reflect.Method.invokeNative(Native Method)
02-04 19:45:46.101: E/AndroidRuntime(27043): at java.lang.reflect.Method.invoke(Method.java:507)
02-04 19:45:46.101: E/AndroidRuntime(27043): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
02-04 19:45:46.101: E/AndroidRuntime(27043): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
02-04 19:45:46.101: E/AndroidRuntime(27043): at dalvik.system.NativeStart.main(Native Method)
02-04 19:45:46.101: E/AndroidRuntime(27043): Caused by: java.lang.ClassCastException: me.sms.smsReminder.SmsReminderActivity$1
02-04 19:45:46.101: E/AndroidRuntime(27043): at me.sms.smsReminder.SmsReminderActivity.onCreate(SmsReminderActivity.java:28)
02-04 19:45:46.101: E/AndroidRuntime(27043): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1072)
02-04 19:45:46.101: E/AndroidRuntime(27043): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1794)
02-04 19:45:46.101: E/AndroidRuntime(27043): ... 11 more
謝謝,湯姆
謝謝,這確實是問題所在。 – tb96 2012-02-05 11:41:47