Android 更改时间时强制关闭:时间选择器(NPE)
当我点击时间选择器来更改强制关闭的时间时 谁能告诉我代码中的问题在哪里。安卓 这是我的密码Android 更改时间时强制关闭:时间选择器(NPE),android,nullpointerexception,forceclose,Android,Nullpointerexception,Forceclose,当我点击时间选择器来更改强制关闭的时间时 谁能告诉我代码中的问题在哪里。安卓 这是我的密码 timePickerDateTimePickerPopup = (TimePicker) layoutDateTimePickerPopup.findViewById(R.id.timePicker_datetimepicker); timePickerDateTimePickerPopup.setDescendantFocusability(TimePicker.FOCUS_BL
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);
我的日志猫显示一个空点异常:
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)
这是一个已知的本地android bug。
请参阅。如前所述,这似乎是一个已知的错误。一种可能的解决方法是迭代子对象,直到找到EditText并将其“focusable”属性设置为false 递归地
// level is just a counter for reading better Logs
private void hideFocusable(ViewGroup vg, int level)
{
for(int i=0; i < vg.getChildCount(); i++)
{
try
{
ViewGroup vt = (ViewGroup) vg.getChildAt(i);
Log.i("NODE",level+") "+ vg.getChildAt(i).getClass().getName());
hideFocusable(vt, level+1);
}catch (ClassCastException e) {
View vf = (View) vg.getChildAt(i);
Log.i("LEAF",level+") "+ vf.getClass().getName());
// here you can pick EditText and setFocusable to false
if(vf.getClass().equals(EditText.class))
vf.setFocusable(false);
}
}
}
//级别只是读取更好日志的计数器
私有void可隐藏(视图组vg,int级别)
{
对于(int i=0;i
在我的AndroidManifest.xml
中将我的应用程序的主题更改为android:theme.Black
。帮我解决了这个问题
将此样式添加到styles.xml
我的片段的样式看起来不同,但现在它可以工作了
更新:
我已经在不改变样式的情况下解决了这个问题,添加了属性android:genderantfocusability=“blocksDescendants”
给我的计时员
<TimePicker
android:id="@+id/toTimePicker"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:descendantFocusability="blocksDescendants" />
请发布您的代码片段….@PanjaabiMunda:确保您当前的活动布局为layoutDateTimePickerPopup?在哪一行您会收到此异常?您的mCalendar是否正确实例化???Calendar mCalendar=Calendar.getInstance();你在做这个吗???