單擊AlertDialog上的按鈕可以設置鬧鐘嗎?我想在單擊AlertDialog的貪睡按鈕時創建警報。使用DialogAlert創建鬧鐘
builder.setNegativeButton("Snooze", new DialogInterface.OnClickListener() //@Override
public void onClick(DialogInterface dialog, int which) {
Intent i = new Intent("com.example.servicealarmdemo2.demoactivity");
PendingIntent operation = PendingIntent.getActivity(getActivity().getBaseContext(), 0, i, Intent.FLAG_ACTIVITY_NEW_TASK);
AlarmManager alarmManager = (AlarmManager)getActivity().getSystemService(Context.ALARM_SERVICE);
long time= System.currentTimeMillis();
EditText text=(EditText)getActivity().findViewById(R.id.editText1);
String str = text.getText().toString();
long t=Long.parseLong(str);
alarmManager.set(AlarmManager.RTC_WAKEUP,
time+(t*60*1000), operation);
}
});
錯誤:
11-22 19:52:23.018: E/AndroidRuntime(363): FATAL EXCEPTION: main
11-22 19:52:23.018: E/AndroidRuntime(363): java.lang.NullPointerException
11-22 19:52:23.018: E/AndroidRuntime(363): at com.example.servicealarmdemo2.AlertDemo$2.onClick(AlertDemo.java:60)
11-22 19:52:23.018: E/AndroidRuntime(363): at com.android.internal.app.AlertController$ButtonHandler.handleMessage(AlertController.java:159)
11-22 19:52:23.018: E/AndroidRuntime(363): at android.os.Handler.dispatchMessage(Handler.java:99)
11-22 19:52:23.018: E/AndroidRuntime(363): at android.os.Looper.loop(Looper.java:123)
11-22 19:52:23.018: E/AndroidRuntime(363): at android.app.ActivityThread.main(ActivityThread.java:3683)
11-22 19:52:23.018: E/AndroidRuntime(363): at java.lang.reflect.Method.invokeNative(Native Method)
11-22 19:52:23.018: E/AndroidRuntime(363): at java.lang.reflect.Method.invoke(Method.java:507)
11-22 19:52:23.018: E/AndroidRuntime(363): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
11-22 19:52:23.018: E/AndroidRuntime(363): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
11-22 19:52:23.018: E/AndroidRuntime(363): at dalvik.system.NativeStart.main(Native Method)
是的。查看[AlarmManager](http://developer.android.com/reference/android/app/AlarmManager.html),嘗試一下,如果遇到困難,請回來。 –
我已經嘗試過,但某些方法未定義爲Alert Dialog類 – user3008437
哪些方法? – Naddy