开关preference(preferenceAtivity) - Android的空 [英] SwitchPreference (PreferenceAtivity) - Android NULL
问题描述
我有一个屏幕preferences,正因为如此,使用了preferenceActivity,我拥有一切建成并发挥作用,但电话(4.1.2版)通过单击文本转换preference(即任何地方的行而不在同一个交换机是)他迸出一个空指针EXCETION,但如果你点击相同的马桶盖工作正常。
那会是什么?
错误:
E / AndroidRuntime:致命异常:主要
显示java.lang.NullPointerException
在android.widget.Switch.onPopulateAccessibilityEvent(Switch.java:550)
在android.view.View.dispatchPopulateAccessibilityEventInternal(View.java:4621)
在android.view.View.dispatchPopulateAccessibilityEvent(View.java:4611)
。在安卓preference.TwoState preference.sendAccessibilityEvent(TwoState preference.java:197)
。在安卓preference.Switch preference.onBindView(开关preference.java:114)
在安卓preference preference.getView(preference.java:463)。
在安卓preference preferenceGroupAdapter.getView(preferenceGroupAdapter.java:221)。
在android.widget.AbsListView.obtainView(AbsListView.java:2308)
在android.widget.ListView.makeAndAddView(ListView.java:1769)
在android.widget.ListView.fillDown(ListView.java:672)
在android.widget.ListView.fillSpecific(ListView.java:1330)
在android.widget.ListView.layoutChildren(ListView.java:1600)
在android.widget.AbsListView.onLayout(AbsListView.java:2143)
在android.view.View.layout(View.java:13850)
在android.view.ViewGroup.layout(ViewGroup.java:4364)
在android.widget.LinearLayout.setChildFrame(LinearLayout.java:1680)
在android.widget.LinearLayout.layoutVertical(LinearLayout.java:1538)
在android.widget.LinearLayout.onLayout(LinearLayout.java:1451)
在android.view.View.layout(View.java:13850)
在android.view.ViewGroup.layout(ViewGroup.java:4364)
在android.widget.LinearLayout.setChildFrame(LinearLayout.java:1680)
在android.widget.LinearLayout.layoutHorizontal(LinearLayout.java:1669)
在android.widget.LinearLayout.onLayout(LinearLayout.java:1453)
在android.view.View.layout(View.java:13850)
在android.view.ViewGroup.layout(ViewGroup.java:4364)
在android.widget.LinearLayout.setChildFrame(LinearLayout.java:1680)
在android.widget.LinearLayout.layoutVertical(LinearLayout.java:1538)
在android.widget.LinearLayout.onLayout(LinearLayout.java:1451)
在android.view.View.layout(View.java:13850)
在android.view.ViewGroup.layout(ViewGroup.java:4364)
在android.widget.FrameLayout.onLayout(FrameLayout.java:448)
在android.view.View.layout(View.java:13850)
在android.view.ViewGroup.layout(ViewGroup.java:4364)
在android.widget.LinearLayout.setChildFrame(LinearLayout.java:1680)
在android.widget.LinearLayout.layoutVertical(LinearLayout.java:1538)
在android.widget.LinearLayout.onLayout(LinearLayout.java:1451)
在android.view.View.layout(View.java:13850)
在android.view.ViewGroup.layout(ViewGroup.java:4364)
在android.widget.FrameLayout.onLayout(FrameLayout.java:448)
在android.view.View.layout(View.java:13850)
在android.view.ViewGroup.layout(ViewGroup.java:4364)
在android.view.ViewRootImpl.performLayout(ViewRootImpl.java:1894)
在android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1710)
在android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1013)
在android.view.ViewRootImpl $ TraversalRunnable.run(ViewRootImpl.java:4245)
在android.view.Choreographer $ CallbackRecord.run(Choreographer.java:725)
在android.view.Choreographer.doCallbacks(Choreographer.java:555)
在android.view.Choreographer.doFrame(Choreographer.java:525)
在android.view.Choreographer $ FrameDisplayEventReceiver.run(Choreographer.java:711)
在android.os.Handler.handleCallback(Handler.java:615)
在android.os.Handler.dispatchMessage(Handler.java:92)
在android.os.Looper.loop(Looper.java:153)
在android.app.ActivityThread.main(ActivityThread.java:5071)
在java.lang.reflect.Method.invokeNative(本机方法)
在java.lang.reflect.Method.invoke(Method.java:511)
在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:790)
在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557)
在dalvik.system.NativeStart.main(本机方法)
添加到您的自定义开关prefrences成分
@覆盖
保护无效的onClick(){
// Log.e(CustomSwitch preferences,的onClick称为);
}
保留空白别叫super.onClick();
这将让您在prefrenceChange除了点击(开关动作不会受到影响,只是该行上点击)
I have a screen preferences, and as such, used the PreferenceActivity, I have everything built and functioning, however a phone (Version 4.1.2) by clicking on the text SwitchPreference (ie anywhere on the row without being in the same switch ) he bursts with a Null Pointer Excetion, but if you click on the same swtich works fine.
What could this be?
error:
E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.NullPointerException
at android.widget.Switch.onPopulateAccessibilityEvent(Switch.java:550)
at android.view.View.dispatchPopulateAccessibilityEventInternal(View.java:4621)
at android.view.View.dispatchPopulateAccessibilityEvent(View.java:4611)
at android.preference.TwoStatePreference.sendAccessibilityEvent(TwoStatePreference.java:197)
at android.preference.SwitchPreference.onBindView(SwitchPreference.java:114)
at android.preference.Preference.getView(Preference.java:463)
at android.preference.PreferenceGroupAdapter.getView(PreferenceGroupAdapter.java:221)
at android.widget.AbsListView.obtainView(AbsListView.java:2308)
at android.widget.ListView.makeAndAddView(ListView.java:1769)
at android.widget.ListView.fillDown(ListView.java:672)
at android.widget.ListView.fillSpecific(ListView.java:1330)
at android.widget.ListView.layoutChildren(ListView.java:1600)
at android.widget.AbsListView.onLayout(AbsListView.java:2143)
at android.view.View.layout(View.java:13850)
at android.view.ViewGroup.layout(ViewGroup.java:4364)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1680)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1538)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1451)
at android.view.View.layout(View.java:13850)
at android.view.ViewGroup.layout(ViewGroup.java:4364)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1680)
at android.widget.LinearLayout.layoutHorizontal(LinearLayout.java:1669)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1453)
at android.view.View.layout(View.java:13850)
at android.view.ViewGroup.layout(ViewGroup.java:4364)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1680)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1538)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1451)
at android.view.View.layout(View.java:13850)
at android.view.ViewGroup.layout(ViewGroup.java:4364)
at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
at android.view.View.layout(View.java:13850)
at android.view.ViewGroup.layout(ViewGroup.java:4364)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1680)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1538)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1451)
at android.view.View.layout(View.java:13850)
at android.view.ViewGroup.layout(ViewGroup.java:4364)
at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
at android.view.View.layout(View.java:13850)
at android.view.ViewGroup.layout(ViewGroup.java:4364)
at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:1894)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1710)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1013)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4245)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
at android.view.Choreographer.doCallbacks(Choreographer.java:555)
at android.view.Choreographer.doFrame(Choreographer.java:525)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
at android.os.Handler.handleCallback(Handler.java:615)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:153)
at android.app.ActivityThread.main(ActivityThread.java:5071)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557)
at dalvik.system.NativeStart.main(Native Method)
add this to your custom switchPrefrences component
@Override
protected void onClick() {
// Log.e("CustomSwitchPreferences", "onClick called");
}
Leave it empty and DO NOT call super.onClick();
This will keep your onPrefrenceChange aside from clicks (switch action won't get affected, just the clicks on the row)
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