Wenn ich auf die Zeitauswahl klicke, um die Zeit zu ändern, werde ich nahe dran.

Kann mir jemand sagen, wo das Problem in meinem Code liegt. Android. und das ist mein Code ......

timePickerDateTimePickerPopup = (TimePicker) layoutDateTimePickerPopup.findViewById(R.id.timePicker_datetimepicker);
            timePickerDateTimePickerPopup.setDescendantFocusability(TimePicker.FOCUS_BLOCK_DESCENDANTS);
            timePickerDateTimePickerPopup.setIs24HourView(true);
            timePickerDateTimePickerPopup.setCurrentHour(mCalendar.get(Calendar.HOUR_OF_DAY));
            timePickerDateTimePickerPopup.setCurrentMinute(mCalendar.get(Calendar.MINUTE));

            timePickerDateTimePickerPopup.setOnTimeChangedListener(this);

            dateTimePickerPopup.setTouchable(true);
            dateTimePickerPopup.setFocusable(true);
            dateTimePickerPopup.setOutsideTouchable(true);
            Drawable image_saved = context.getResources().getDrawable(R.drawable.dummy_bg);
            dateTimePickerPopup.setBackgroundDrawable(image_saved);

Mein Logcat zeigt aNullPointerException:

STACK_TRACE=java.lang.NullPointerException
at android.widget.TimePicker.updateInputState(TimePicker.java:553)
at android.widget.TimePicker.access$000(TimePicker.java:55)
at android.widget.TimePicker$2.onValueChange(TimePicker.java:149)
at android.widget.NumberPicker.notifyChange(NumberPicker.java:1777)
at android.widget.NumberPicker.changeCurrent(NumberPicker.java:1455)
at android.widget.NumberPicker.changeCurrentByOne(NumberPicker.java:1481)
at android.widget.NumberPicker.access$100(NumberPicker.java:70)
at android.widget.NumberPicker$2.onClick(NumberPicker.java:592)
at android.view.View.performClick(View.java:3519)
at android.view.View$PerformClick.run(View.java:14140)
at android.os.Handler.handleCallback(Handler.java:605)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4424)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:787)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:554)
at dalvik.system.NativeStart.main(Native Method)