对于IllegalStateException：使用ViewPager在onSaveInstanceState之后无法执行此操作感兴趣的读者，本文将提供您所需要的所有信息，我们将详细讲解请使用webd
对于IllegalStateException：使用ViewPager在onSaveInstanceState之后无法执行此操作感兴趣的读者，本文将提供您所需要的所有信息，我们将详细讲解请使用webdav，并且为您提供关于Android java.lang.IllegalStateException：无法执行活动的方法、android – CookieSyncManager :: createInstance()IllegalStateException？、android – IllegalArgumentException：savedInstanceState指定为Non-Null为Null、android – java.lang.IllegalStateException(在onSaveInstanceState之后无法执行此操作)的宝贵知识。
本文目录一览：- IllegalStateException：使用ViewPager在onSaveInstanceState之后无法执行此操作（请使用webdav）
- Android java.lang.IllegalStateException：无法执行活动的方法
- android – CookieSyncManager :: createInstance()IllegalStateException？
- android – IllegalArgumentException：savedInstanceState指定为Non-Null为Null
- android – java.lang.IllegalStateException(在onSaveInstanceState之后无法执行此操作)
IllegalStateException：使用ViewPager在onSaveInstanceState之后无法执行此操作（请使用webdav）
我从市场上的应用程序中获取用户报告，但出现以下异常：
java.lang.IllegalStateException: Can not perform this action after onSaveInstanceStateat android.app.FragmentManagerImpl.checkStateLoss(FragmentManager.java:1109)at android.app.FragmentManagerImpl.popBackStackImmediate(FragmentManager.java:399)at android.app.Activity.onBackPressed(Activity.java:2066)at android.app.Activity.onKeyUp(Activity.java:2044)at android.view.KeyEvent.dispatch(KeyEvent.java:2529)at android.app.Activity.dispatchKeyEvent(Activity.java:2274)at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchKeyEvent(PhoneWindow.java:1803)at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112)at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112)at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112)at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchKeyEvent(PhoneWindow.java:1855)at com.android.internal.policy.impl.PhoneWindow.superDispatchKeyEvent(PhoneWindow.java:1277)at android.app.Activity.dispatchKeyEvent(Activity.java:2269)at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchKeyEvent(PhoneWindow.java:1803)at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112)at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112)at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112)at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112)at android.widget.TabHost.dispatchKeyEvent(TabHost.java:297)at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112)at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112)at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112)at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchKeyEvent(PhoneWindow.java:1855)at com.android.internal.policy.impl.PhoneWindow.superDispatchKeyEvent(PhoneWindow.java:1277)at android.app.Activity.dispatchKeyEvent(Activity.java:2269)at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchKeyEvent(PhoneWindow.java:1803)at android.view.ViewRoot.deliverKeyEventPostIme(ViewRoot.java:2880)at android.view.ViewRoot.handleFinishedEvent(ViewRoot.java:2853)at android.view.ViewRoot.handleMessage(ViewRoot.java:2028)at android.os.Handler.dispatchMessage(Handler.java:99)at android.os.Looper.loop(Looper.java:132)at android.app.ActivityThread.main(ActivityThread.java:4028)at java.lang.reflect.Method.invokeNative(Native Method)at java.lang.reflect.Method.invoke(Method.java:491)at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:844)at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:602)at dalvik.system.NativeStart.main(Native Method)显然，它与FragmentManager有关，我不使用。stacktrace不显示我自己的任何类，因此我不知道发生此异常的位置以及如何防止它。
作为记录：我有一个tabhost，在每个选项卡中都有一个ActivityGroup在Activity之间切换。
答案1
小编典典基本上我只需要：
@Overrideprotected void onSaveInstanceState(Bundle outState) { //No call for super(). Bug on API Level > 11.}不要super()在saveInstanceState方法上进行调用。这太糟了…
这是支持包中的已知错误。
如果需要保存实例并向其中添加一些内容，则outState Bundle可以使用以下命令：
@Overrideprotected void onSaveInstanceState(Bundle outState) { outState.putString("WORKAROUND_FOR_BUG_19917_KEY", "WORKAROUND_FOR_BUG_19917_VALUE"); super.onSaveInstanceState(outState);}最后，使用适当的解决方案（如注释中所示）：
transaction.commitAllowingStateLoss();当添加或执行FragmentTransaction导致的时Exception。
Android java.lang.IllegalStateException：无法执行活动的方法
您好，我是学习android的新手，我正尝试在学习Android时制作一个半有用的应用程序（对我自己），基本上我是在第一时间接受有用的Java代码（ping
X，端口扫描）并添加将它们添加到我的应用中，我无法弄清楚 为什么
会发生此错误，我确实认为这与代码的第77行有关，但是我想了解为什么它无法正常工作，因此下次我可以更好地帮助自己。很抱歉出现罗word的问题，我不知道什么时候闭嘴。
01-25 20:42:42.139: E/AndroidRuntime(1307): FATAL EXCEPTION: main
01-25 20:42:42.139: E/AndroidRuntime(1307): java.lang.IllegalStateException: Could not execute method of the activity
01-25 20:42:42.139: E/AndroidRuntime(1307): at android.view.View$1.onClick(View.java:3597)
01-25 20:42:42.139: E/AndroidRuntime(1307): at android.view.View.performClick(View.java:4202)
01-25 20:42:42.139: E/AndroidRuntime(1307): at android.view.View$PerformClick.run(View.java:17340)
01-25 20:42:42.139: E/AndroidRuntime(1307): at android.os.Handler.handleCallback(Handler.java:725)
01-25 20:42:42.139: E/AndroidRuntime(1307): at android.os.Handler.dispatchMessage(Handler.java:92)
01-25 20:42:42.139: E/AndroidRuntime(1307): at android.os.Looper.loop(Looper.java:137)
01-25 20:42:42.139: E/AndroidRuntime(1307): at android.app.ActivityThread.main(ActivityThread.java:5191)
01-25 20:42:42.139: E/AndroidRuntime(1307): at java.lang.reflect.Method.invokeNative(Native Method)
01-25 20:42:42.139: E/AndroidRuntime(1307): at java.lang.reflect.Method.invoke(Method.java:511)
01-25 20:42:42.139: E/AndroidRuntime(1307): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795)
01-25 20:42:42.139: E/AndroidRuntime(1307): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562)
01-25 20:42:42.139: E/AndroidRuntime(1307): at dalvik.system.NativeStart.main(Native Method)
01-25 20:42:42.139: E/AndroidRuntime(1307): Caused by: java.lang.reflect.InvocationTargetException
01-25 20:42:42.139: E/AndroidRuntime(1307): at java.lang.reflect.Method.invokeNative(Native Method)
01-25 20:42:42.139: E/AndroidRuntime(1307): at java.lang.reflect.Method.invoke(Method.java:511)
01-25 20:42:42.139: E/AndroidRuntime(1307): at android.view.View$1.onClick(View.java:3592)
01-25 20:42:42.139: E/AndroidRuntime(1307): ... 11 more
01-25 20:42:42.139: E/AndroidRuntime(1307): Caused by: java.lang.NullPointerException
01-25 20:42:42.139: E/AndroidRuntime(1307): at com.seven.up.MainActivity.OnClickPort(MainActivity.java:77)
01-25 20:42:42.139: E/AndroidRuntime(1307): ... 14 more
01-25 20:44:42.549: E/MPL-storeload(511): calData from inv_save_mpl_states,size=2
01-25 20:45:39.759: E/InputDispatcher(511): channel '41b55368 com.seven.up/com.seven.up.MainActivity (server)' ~ Channel is unrecoverably broken and will be disposed!
01-25 20:45:50.279: E/AndroidRuntime(1625): FATAL EXCEPTION: main
01-25 20:45:50.279: E/AndroidRuntime(1625): java.lang.IllegalStateException: Could not execute method of the activity
01-25 20:45:50.279: E/AndroidRuntime(1625): at android.view.View$1.onClick(View.java:3597)
01-25 20:45:50.279: E/AndroidRuntime(1625): at android.view.View.performClick(View.java:4202)
01-25 20:45:50.279: E/AndroidRuntime(1625): at android.view.View$PerformClick.run(View.java:17340)
01-25 20:45:50.279: E/AndroidRuntime(1625): at android.os.Handler.handleCallback(Handler.java:725)
01-25 20:45:50.279: E/AndroidRuntime(1625): at android.os.Handler.dispatchMessage(Handler.java:92)
01-25 20:45:50.279: E/AndroidRuntime(1625): at android.os.Looper.loop(Looper.java:137)
01-25 20:45:50.279: E/AndroidRuntime(1625): at android.app.ActivityThread.main(ActivityThread.java:5191)
01-25 20:45:50.279: E/AndroidRuntime(1625): at java.lang.reflect.Method.invokeNative(Native Method)
01-25 20:45:50.279: E/AndroidRuntime(1625): at java.lang.reflect.Method.invoke(Method.java:511)
01-25 20:45:50.279: E/AndroidRuntime(1625): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795)
01-25 20:45:50.279: E/AndroidRuntime(1625): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562)
01-25 20:45:50.279: E/AndroidRuntime(1625): at dalvik.system.NativeStart.main(Native Method)
01-25 20:45:50.279: E/AndroidRuntime(1625): Caused by: java.lang.reflect.InvocationTargetException
01-25 20:45:50.279: E/AndroidRuntime(1625): at java.lang.reflect.Method.invokeNative(Native Method)
01-25 20:45:50.279: E/AndroidRuntime(1625): at java.lang.reflect.Method.invoke(Method.java:511)
01-25 20:45:50.279: E/AndroidRuntime(1625): at android.view.View$1.onClick(View.java:3592)
01-25 20:45:50.279: E/AndroidRuntime(1625): ... 11 more
01-25 20:45:50.279: E/AndroidRuntime(1625): Caused by: java.lang.NullPointerException
01-25 20:45:50.279: E/AndroidRuntime(1625): at com.seven.up.MainActivity.OnClickPort(MainActivity.java:78)
01-25 20:45:50.279: E/AndroidRuntime(1625): ... 14 more
01-25 20:46:32.409: E/InputDispatcher(511): channel '416e8e78 com.seven.up/com.seven.up.MainActivity (server)' ~ Channel is unrecoverably broken and will be disposed!
01-25 20:46:35.449: E/AndroidRuntime(1830): FATAL EXCEPTION: main
01-25 20:46:35.449: E/AndroidRuntime(1830): java.lang.IllegalStateException: Could not execute method of the activity
01-25 20:46:35.449: E/AndroidRuntime(1830): at android.view.View$1.onClick(View.java:3597)
01-25 20:46:35.449: E/AndroidRuntime(1830): at android.view.View.performClick(View.java:4202)
01-25 20:46:35.449: E/AndroidRuntime(1830): at android.view.View$PerformClick.run(View.java:17340)
01-25 20:46:35.449: E/AndroidRuntime(1830): at android.os.Handler.handleCallback(Handler.java:725)
01-25 20:46:35.449: E/AndroidRuntime(1830): at android.os.Handler.dispatchMessage(Handler.java:92)
01-25 20:46:35.449: E/AndroidRuntime(1830): at android.os.Looper.loop(Looper.java:137)
01-25 20:46:35.449: E/AndroidRuntime(1830): at android.app.ActivityThread.main(ActivityThread.java:5191)
01-25 20:46:35.449: E/AndroidRuntime(1830): at java.lang.reflect.Method.invokeNative(Native Method)
01-25 20:46:35.449: E/AndroidRuntime(1830): at java.lang.reflect.Method.invoke(Method.java:511)
01-25 20:46:35.449: E/AndroidRuntime(1830): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795)
01-25 20:46:35.449: E/AndroidRuntime(1830): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562)
01-25 20:46:35.449: E/AndroidRuntime(1830): at dalvik.system.NativeStart.main(Native Method)
01-25 20:46:35.449: E/AndroidRuntime(1830): Caused by: java.lang.reflect.InvocationTargetException
01-25 20:46:35.449: E/AndroidRuntime(1830): at java.lang.reflect.Method.invokeNative(Native Method)
01-25 20:46:35.449: E/AndroidRuntime(1830): at java.lang.reflect.Method.invoke(Method.java:511)
01-25 20:46:35.449: E/AndroidRuntime(1830): at android.view.View$1.onClick(View.java:3592)
01-25 20:46:35.449: E/AndroidRuntime(1830): ... 11 more
01-25 20:46:35.449: E/AndroidRuntime(1830): Caused by: java.lang.NullPointerException
01-25 20:46:35.449: E/AndroidRuntime(1830): at com.seven.up.MainActivity.OnClickPort(MainActivity.java:77)
01-25 20:46:35.449: E/AndroidRuntime(1830): ... 14 more
01-25 20:47:40.119: E/AndroidRuntime(2009): FATAL EXCEPTION: main
01-25 20:47:40.119: E/AndroidRuntime(2009): java.lang.IllegalStateException: Could not execute method of the activity
01-25 20:47:40.119: E/AndroidRuntime(2009): at android.view.View$1.onClick(View.java:3597)
01-25 20:47:40.119: E/AndroidRuntime(2009): at android.view.View.performClick(View.java:4202)
01-25 20:47:40.119: E/AndroidRuntime(2009): at android.view.View$PerformClick.run(View.java:17340)
01-25 20:47:40.119: E/AndroidRuntime(2009): at android.os.Handler.handleCallback(Handler.java:725)
01-25 20:47:40.119: E/AndroidRuntime(2009): at android.os.Handler.dispatchMessage(Handler.java:92)
01-25 20:47:40.119: E/AndroidRuntime(2009): at android.os.Looper.loop(Looper.java:137)
01-25 20:47:40.119: E/AndroidRuntime(2009): at android.app.ActivityThread.main(ActivityThread.java:5191)
01-25 20:47:40.119: E/AndroidRuntime(2009): at java.lang.reflect.Method.invokeNative(Native Method)
01-25 20:47:40.119: E/AndroidRuntime(2009): at java.lang.reflect.Method.invoke(Method.java:511)
01-25 20:47:40.119: E/AndroidRuntime(2009): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795)
01-25 20:47:40.119: E/AndroidRuntime(2009): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562)
01-25 20:47:40.119: E/AndroidRuntime(2009): at dalvik.system.NativeStart.main(Native Method)
01-25 20:47:40.119: E/AndroidRuntime(2009): Caused by: java.lang.reflect.InvocationTargetException
01-25 20:47:40.119: E/AndroidRuntime(2009): at java.lang.reflect.Method.invokeNative(Native Method)
01-25 20:47:40.119: E/AndroidRuntime(2009): at java.lang.reflect.Method.invoke(Method.java:511)
01-25 20:47:40.119: E/AndroidRuntime(2009): at android.view.View$1.onClick(View.java:3592)
01-25 20:47:40.119: E/AndroidRuntime(2009): ... 11 more
01-25 20:47:40.119: E/AndroidRuntime(2009): Caused by: java.lang.NullPointerException
01-25 20:47:40.119: E/AndroidRuntime(2009): at com.seven.up.MainActivity.OnClickPort(MainActivity.java:77)
01-25 20:47:40.119: E/AndroidRuntime(2009): ... 14 more
01-25 20:49:29.979: E/InputDispatcher(511): channel '414e7770 com.seven.up/com.seven.up.MainActivity (server)' ~ Channel is unrecoverably broken and will be disposed!
01-25 20:49:30.149: E/jdwp(2216): Failed sending reply to debugger: Broken pipe
01-25 20:49:41.599: E/MPL-storeload(511): calData from inv_save_mpl_states,size=2
01-25 20:50:12.539: E/InputDispatcher(511): channel '41c0a160 com.seven.up/com.seven.up.MainActivity (server)' ~ Channel is unrecoverably broken and will be disposed!
01-25 20:50:13.629: E/InputManager-JNI(511): An exception was thrown by callback 'interceptKeyBeforeQueueing'.
01-25 20:50:13.629: E/InputManager-JNI(511): java.lang.NullPointerException
01-25 20:50:13.629: E/InputManager-JNI(511): at com.android.internal.policy.impl.PhoneWindowManager.interceptKeyBeforeQueueing(PhoneWindowManager.java:3948)
01-25 20:50:13.629: E/InputManager-JNI(511): at com.android.server.wm.InputMonitor.interceptKeyBeforeQueueing(InputMonitor.java:337)
01-25 20:50:13.629: E/InputManager-JNI(511): at com.android.server.input.InputManagerService.interceptKeyBeforeQueueing(InputManagerService.java:1346)
01-25 20:50:13.629: E/InputManager-JNI(511): at dalvik.system.NativeStart.run(Native Method)
01-25 20:50:13.899: E/InputManager-JNI(511): An exception was thrown by callback 'interceptKeyBeforeQueueing'.
01-25 20:50:13.899: E/InputManager-JNI(511): java.lang.NullPointerException
01-25 20:50:13.899: E/InputManager-JNI(511): at com.android.internal.policy.impl.PhoneWindowManager.interceptKeyBeforeQueueing(PhoneWindowManager.java:3948)
01-25 20:50:13.899: E/InputManager-JNI(511): at com.android.server.wm.InputMonitor.interceptKeyBeforeQueueing(InputMonitor.java:337)
01-25 20:50:13.899: E/InputManager-JNI(511): at com.android.server.input.InputManagerService.interceptKeyBeforeQueueing(InputManagerService.java:1346)
01-25 20:50:13.899: E/InputManager-JNI(511): at dalvik.system.NativeStart.run(Native Method)
01-25 20:50:19.759: E/InputDispatcher(511): channel '41419b38 com.seven.up/com.seven.up.MainActivity (server)' ~ Channel is unrecoverably broken and will be disposed!
01-25 20:51:49.459: E/WeatherXmlParser(2522): Couldn't parse Yahoo weather XML
01-25 20:51:49.459: E/WeatherXmlParser(2522): java.lang.NumberFormatException: Invalid float: ""
01-25 20:51:49.459: E/WeatherXmlParser(2522): at java.lang.StringToReal.invalidReal(StringToReal.java:63)
01-25 20:51:49.459: E/WeatherXmlParser(2522): at java.lang.StringToReal.parseFloat(StringToReal.java:289)
01-25 20:51:49.459: E/WeatherXmlParser(2522): at java.lang.Float.parseFloat(Float.java:300)
01-25 20:51:49.459: E/WeatherXmlParser(2522): at com.cyanogenmod.lockclock.weather.WeatherXmlParser.getFloatForAttribute(WeatherXmlParser.java:86)
01-25 20:51:49.459: E/WeatherXmlParser(2522): at com.cyanogenmod.lockclock.weather.WeatherXmlParser.parseWeatherResponse(WeatherXmlParser.java:108)
01-25 20:51:49.459: E/WeatherXmlParser(2522): at com.cyanogenmod.lockclock.weather.WeatherUpdateService$WeatherUpdateTask.doInBackground(WeatherUpdateService.java:210)
01-25 20:51:49.459: E/WeatherXmlParser(2522): at com.cyanogenmod.lockclock.weather.WeatherUpdateService$WeatherUpdateTask.doInBackground(WeatherUpdateService.java:126)
01-25 20:51:49.459: E/WeatherXmlParser(2522): at android.os.AsyncTask$2.call(AsyncTask.java:287)
01-25 20:51:49.459: E/WeatherXmlParser(2522): at java.util.concurrent.FutureTask.run(FutureTask.java:234)
01-25 20:51:49.459: E/WeatherXmlParser(2522): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
01-25 20:51:49.459: E/WeatherXmlParser(2522): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
01-25 20:51:49.459: E/WeatherXmlParser(2522): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
01-25 20:51:49.459: E/WeatherXmlParser(2522): at java.lang.Thread.run(Thread.java:856)
01-25 20:52:24.619: E/MPL-storeload(511): calData from inv_save_mpl_states,size=2
01-25 20:57:07.229: E/AndroidRuntime(2410): FATAL EXCEPTION: main
01-25 20:57:07.229: E/AndroidRuntime(2410): java.lang.IllegalStateException: Could not execute method of the activity
01-25 20:57:07.229: E/AndroidRuntime(2410): at android.view.View$1.onClick(View.java:3597)
01-25 20:57:07.229: E/AndroidRuntime(2410): at android.view.View.performClick(View.java:4202)
01-25 20:57:07.229: E/AndroidRuntime(2410): at android.view.View$PerformClick.run(View.java:17340)
01-25 20:57:07.229: E/AndroidRuntime(2410): at android.os.Handler.handleCallback(Handler.java:725)
01-25 20:57:07.229: E/AndroidRuntime(2410): at android.os.Handler.dispatchMessage(Handler.java:92)
01-25 20:57:07.229: E/AndroidRuntime(2410): at android.os.Looper.loop(Looper.java:137)
01-25 20:57:07.229: E/AndroidRuntime(2410): at android.app.ActivityThread.main(ActivityThread.java:5191)
01-25 20:57:07.229: E/AndroidRuntime(2410): at java.lang.reflect.Method.invokeNative(Native Method)
01-25 20:57:07.229: E/AndroidRuntime(2410): at java.lang.reflect.Method.invoke(Method.java:511)
01-25 20:57:07.229: E/AndroidRuntime(2410): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795)
01-25 20:57:07.229: E/AndroidRuntime(2410): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562)
01-25 20:57:07.229: E/AndroidRuntime(2410): at dalvik.system.NativeStart.main(Native Method)
01-25 20:57:07.229: E/AndroidRuntime(2410): Caused by: java.lang.reflect.InvocationTargetException
01-25 20:57:07.229: E/AndroidRuntime(2410): at java.lang.reflect.Method.invokeNative(Native Method)
01-25 20:57:07.229: E/AndroidRuntime(2410): at java.lang.reflect.Method.invoke(Method.java:511)
01-25 20:57:07.229: E/AndroidRuntime(2410): at android.view.View$1.onClick(View.java:3592)
01-25 20:57:07.229: E/AndroidRuntime(2410): ... 11 more
01-25 20:57:07.229: E/AndroidRuntime(2410): Caused by: java.lang.NullPointerException
01-25 20:57:07.229: E/AndroidRuntime(2410): at com.seven.up.MainActivity.OnClickPort(MainActivity.java:77)
01-25 20:57:07.229: E/AndroidRuntime(2410): ... 14 more
01-25 20:59:12.549: E/AndroidRuntime(3168): FATAL EXCEPTION: main
01-25 20:59:12.549: E/AndroidRuntime(3168): java.lang.IllegalStateException: Could not execute method of the activity
01-25 20:59:12.549: E/AndroidRuntime(3168): at android.view.View$1.onClick(View.java:3597)
01-25 20:59:12.549: E/AndroidRuntime(3168): at android.view.View.performClick(View.java:4202)
01-25 20:59:12.549: E/AndroidRuntime(3168): at android.view.View$PerformClick.run(View.java:17340)
01-25 20:59:12.549: E/AndroidRuntime(3168): at android.os.Handler.handleCallback(Handler.java:725)
01-25 20:59:12.549: E/AndroidRuntime(3168): at android.os.Handler.dispatchMessage(Handler.java:92)
01-25 20:59:12.549: E/AndroidRuntime(3168): at android.os.Looper.loop(Looper.java:137)
01-25 20:59:12.549: E/AndroidRuntime(3168): at android.app.ActivityThread.main(ActivityThread.java:5191)
01-25 20:59:12.549: E/AndroidRuntime(3168): at java.lang.reflect.Method.invokeNative(Native Method)
01-25 20:59:12.549: E/AndroidRuntime(3168): at java.lang.reflect.Method.invoke(Method.java:511)
01-25 20:59:12.549: E/AndroidRuntime(3168): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795)
01-25 20:59:12.549: E/AndroidRuntime(3168): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562)
01-25 20:59:12.549: E/AndroidRuntime(3168): at dalvik.system.NativeStart.main(Native Method)
01-25 20:59:12.549: E/AndroidRuntime(3168): Caused by: java.lang.reflect.InvocationTargetException
01-25 20:59:12.549: E/AndroidRuntime(3168): at java.lang.reflect.Method.invokeNative(Native Method)
01-25 20:59:12.549: E/AndroidRuntime(3168): at java.lang.reflect.Method.invoke(Method.java:511)
01-25 20:59:12.549: E/AndroidRuntime(3168): at android.view.View$1.onClick(View.java:3592)
01-25 20:59:12.549: E/AndroidRuntime(3168): ... 11 more
01-25 20:59:12.549: E/AndroidRuntime(3168): Caused by: java.lang.NullPointerException
01-25 20:59:12.549: E/AndroidRuntime(3168): at com.seven.up.MainActivity.OnClickPort(MainActivity.java:76)
01-25 20:59:12.549: E/AndroidRuntime(3168): ... 14 more
01-25 21:01:13.939: E/MPL-storeload(511): calData from inv_save_mpl_states,size=2
package com.seven.up;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.*;
import android.app.Activity;
import android.os.Bundle;
import android.text.Editable;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity implements OnClickListener {
EditText ip_address_field;
TextView scan_out;
TextView port_results;
EditText startPort;
EditText stopPort;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ip_address_field = (EditText) findViewById(R.id.ip_address_field);
ip_address_field.getText();
scan_out = (TextView) findViewById(R.id.scan_out);
Button scan_button = (Button) findViewById(R.id.scan_button);
scan_button.setOnClickListener(this);
}
public void onClick(View v) {
Editable host = ip_address_field.getText();
switch (v.getId()) {
case R.id.scan_button:
try {
String pingCmd = "ping -c 5 " + host;
String pingResult = "";
Runtime r = Runtime.getRuntime();
Process p = r.exec(pingCmd);
BufferedReader in = new BufferedReader(new InputStreamReader(
p.getInputStream()));
String inputLine;
while ((inputLine = in.readLine()) != null) {
System.out.println(inputLine);
scan_out.setText(inputLine + "\n" + "\n");
pingResult += inputLine;
scan_out.setText("/n" + pingResult);
}
in.close();
}// try
catch (IOException e) {
System.out.println(e);
}
break;
default:
break;
}
}
public void OnClickPort(View v) {
switch (v.getId()) {
case R.id.button1:
int startPortRange = Integer.parseInt(startPort.getText().toString());
int stopPortRange = Integer.parseInt(stopPort.getText().toString());
for (int i = startPortRange; i <= stopPortRange; i++) {
try {
Socket ServerSok = new Socket("192.168.0.1",i);
Toast.makeText(getApplicationContext(),"Port in use: " + i,Toast.LENGTH_LONG).show();
ServerSok.close();
} catch (Exception e) {
}
System.out.println("Port not in use: " + i);
}
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.activity_main,menu);
return super.onCreateOptionsMenu(menu);
}
}
android – CookieSyncManager :: createInstance()IllegalStateException？
我的应用程序最近开始收到很多CookieSyncManager异常：
java.lang.IllegalStateException: CookieSyncManager::createInstance()
needs to be called before CookieSyncManager::getInstance()
at android.webkit.CookieSyncManager.getInstance(CookieSyncManager.java:81)
at android.webkit.CookieManager$2.run(CookieManager.java:532)
at java.lang.Thread.run(Thread.java:1096)
堆栈跟踪中的错误很明显,但它的起源不是(这是来自Play商店报告).附加到堆栈跟踪的用户消息表明它正在我正在使用facebook SDK的地方发生,它确实使用了CookieSyncManager：
// From Facebook.java
private void startDialogAuth(Activity activity,String[] permissions) {
...
CookieSyncManager.createInstance(activity); // <-- here
dialog(activity,LOGIN,params,new DialogListener() {
public void onComplete(Bundle values) {
CookieSyncManager.getInstance().sync(); // <-- here
...
https://github.com/facebook/facebook-android-sdk/blob/master/facebook/src/com/facebook/android/Facebook.java#L342
这对我来说没问题,但上述用法有什么问题吗？我无法在任何测试设备上重现错误,可能存在实现差异？
谢谢
解决方法
应该像异常说：
public void onComplete(Bundle values) {
CookieSyncManager.createInstance( activity ); // <-- this line was missing
CookieSyncManager.getInstance().sync();
...
android – IllegalArgumentException：savedInstanceState指定为Non-Null为Null
当我启动MainActivity时出现一个奇怪的错误：
06-16 16:01:05.193 2083-2083/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.android.example.github, PID: 2083
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.android.example.github/com.android.example.github.ui.MainActivity}: java.lang.IllegalArgumentException: Parameter specified as non-null is null: method kotlin.jvm.internal.Intrinsics.checkParameterIsNotNull, parameter savedInstanceState
at android.app.ActivityThread.performlaunchActivity(ActivityThread.java:2666)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2727)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1478)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6121)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:889)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:779)
Caused by: java.lang.IllegalArgumentException: Parameter specified as non-null is null: method kotlin.jvm.internal.Intrinsics.checkParameterIsNotNull, parameter savedInstanceState
at com.android.example.github.injection.AppInjector$init$1.onActivityCreated(AppInjector.kt)
at android.app.Application.dispatchActivityCreated(Application.java:197)
at android.app.Activity.onCreate(Activity.java:961)
at android.support.v4.app.BaseFragmentActivityGingerbread.onCreate(BaseFragmentActivityGingerbread.java:54)
at android.support.v4.app.FragmentActivity.onCreate(FragmentActivity.java:319)
at com.android.example.github.ui.MainActivity.onCreate(MainActivity.kt:20)
at android.app.Activity.performCreate(Activity.java:6682)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
at android.app.ActivityThread.performlaunchActivity(ActivityThread.java:2619)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2727)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1478)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6121)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:889)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:779)
这是我的MainActivity类：
class MainActivity : LifecycleActivity(), HasSupportFragmentInjector {
lateinit var dispatchingAndroidInjector: dispatchingAndroidInjector<Fragment>
@Inject set
lateinit var navigationController: NavigationController
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.main_activity)
if (savedInstanceState == null) {
navigationController.navigatetoSearch()
}
}
override fun supportFragmentInjector(): AndroidInjector<Fragment> {
return dispatchingAndroidInjector
}
}
该错误表明参数savedInstanceState为null,当它被指定为非null时;但它可以为空(savedInstanceState：Bundle？),并且onCreate()方法在源中标记为@Nullable.
我在任何其他Kotlin项目中都没有遇到过这个错误.我正在使用Kotlin版本1.1.2-5;与1.1.2-3有同样的错误.
解决方法:
似乎问题不在onCreate方法中.尝试查看com.android.example.github.injection.AppInjector $init $1.onActivityCreated(AppInjector.kt).我不知道它是否是一个生成的类,但它应该让你知道下一步该做什么.
android – java.lang.IllegalStateException(在onSaveInstanceState之后无法执行此操作)
我在不同场景中收到以下消息时出现此错误：
>活动已被破坏
>在onSaveInstanceState之后无法执行此操作
我正在编写一个应用程序,其中两个活动互相交互. Activity-A使用Intent启动Activity-B.这个Activity-B类有两个片段子级. Fragment-A使用公共活动方法来启动另一个Fragment-B.
public void beginTransaction(ID id, Bundle bundle) {
Fragment fragment = getFragmentItem(id);
// In case this activity was started with special instructions from an Intent,
// pass the Intent's extras to the fragment as arguments
fragment.setArguments(bundle);
// Add the fragment to the 'fragment_container' FrameLayout
fragmentManager.beginTransaction()
.add(R.id.fragment_container, fragment).commitAllowingStateLoss();
}
Fragment-B每次调用finish()来杀死Activity-B,因此控制再次返回Activity-A.同样的过程重复.做了2-3次我得到了：
java.lang.IllegalStateException: Can not perform this action after
onSaveInstanceState E/AndroidRuntime( 9008): at
android.support.v4.app.FragmentManagerImpl.checkStateLoss(FragmentManager.java:1354)
E/AndroidRuntime( 9008): at
android.support.v4.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1372)
所以为了避免它,我遵循https://stackoverflow.com/a/10261438/2624806,它开始给我
java.lang.IllegalStateException: Activity has been destroyed
E/AndroidRuntime( 9235): at
android.support.v4.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1376)
E/AndroidRuntime( 9235): at
android.support.v4.app.BackStackRecord.commitInternal(BackStackRecord.java:595)
任何建议我在这里缺少什么.
GOT IT我得到了解决方案..在添加片段的事务中发生了错误.我使用.add代替使用.replace(因为我的要求不维护堆栈)并使用commitAllowTransaction来提交它.我也阅读了http://www.androiddesignpatterns.com/2013/08/fragment-transaction-commit-state-loss.html,看起来我所做的可能是昂贵的,但对于正常的片段交易,提到解决方法很好.
解决方法:
由于声誉较低,我无法对您的问题发表评论.
我认为这是改变片段的公共方法.
public void beginTransaction(ID id, Bundle bundle)
每次将片段添加到活动时,在此方法中.因此,如果您是第一次添加片段,这将正常工作,但如果是第二个片段,您应该使用替换不添加
fragmentManager.beginTransaction()
.replace(R.id.fragment_container, fragment).commitAllowingStateLoss();
我认为这样做之后你不应该面对这个问题.或者您可以对第一个和第二个片段使用“替换”.
我希望这能帮到您.
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