当我点击时间选择器更改时间时，我强制关闭。
谁能告诉我我的代码哪里出了问题。安卓。 这是我的代码......
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);
我的 Logcat 显示了一个NullPointerException:
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)
最佳答案
这是一个已知的 native android 错误。 参见 bug #24387 in Android Bug Tracker .
关于android - 更改时间强制关闭 : Time Picker (NPE)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/11150655/