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Android, the application crashed on screen rotation with the opening of a dialogue

My application has a dialogue and two actions, a landscape and a portrait.

when I am in one of the actions and the screen rotates when the dialog is open, the application crashes.

What should I “handle” to prevent this from happening?

This is the output of logcat: (a space indicates where everything starts to go south)

11-15 15:56:25.322: D/AndroidRuntime(956): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<< 11-15 15:56:25.322: D/AndroidRuntime(956): CheckJNI is ON 11-15 15:56:26.342: W/ThrottleService(77): unable to find stats for iface rmnet0 11-15 15:56:26.382: D/AndroidRuntime(956): Calling main entry com.android.commands.pm.Pm 11-15 15:56:26.442: D/AndroidRuntime(956): Shutting down VM 11-15 15:56:26.452: D/dalvikvm(956): GC_CONCURRENT freed 101K, 78% free 463K/2048K, paused 1ms+1ms 11-15 15:56:26.462: D/dalvikvm(956): Debugger has detached; object registry had 1 entries 11-15 15:56:26.472: I/AndroidRuntime(956): NOTE: attach of thread 'Binder Thread #3' failed 11-15 15:56:27.112: D/AndroidRuntime(969): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<< 11-15 15:56:27.112: D/AndroidRuntime(969): CheckJNI is ON 11-15 15:56:28.002: D/AndroidRuntime(969): Calling main entry com.android.commands.am.Am 11-15 15:56:28.032: I/ActivityManager(77): START {act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=com.soft.test/.myActivity} from pid 969 11-15 15:56:28.032: W/WindowManager(77): Failure taking screenshot for (130x178) to layer 21005 11-15 15:56:28.092: D/AndroidRuntime(969): Shutting down VM 11-15 15:56:28.142: D/dalvikvm(980): Not late-enabling CheckJNI (already on) 11-15 15:56:28.163: D/dalvikvm(969): GC_CONCURRENT freed 102K, 77% free 485K/2048K, paused 1ms+1ms 11-15 15:56:28.163: D/dalvikvm(969): Debugger has detached; object registry had 1 entries 11-15 15:56:28.172: I/AndroidRuntime(969): NOTE: attach of thread 'Binder Thread #3' failed 11-15 15:56:28.252: I/ActivityManager(77): Start proc com.soft.test for activity com.soft.test/.myActivity: pid=980 uid=10046 gids={3003} 11-15 15:56:28.362: I/dalvikvm(980): Turning on JNI app bug workarounds for target SDK version 8... 11-15 15:56:28.452: W/NetworkManagementSocketTagger(77): setKernelCountSet(10046, 1) failed with errno -2 11-15 15:56:29.652: D/dalvikvm(980): GC_CONCURRENT freed 222K, 5% free 6723K/7047K, paused 5ms+16ms 11-15 15:56:29.873: V/PhoneStatusBar(141): setLightsOn(true) 11-15 15:56:29.953: D/gralloc_goldfish(980): Emulator without GPU emulation detected. 11-15 15:56:30.303: I/ActivityManager(77): Displayed com.soft.test/.myActivity: +2s234ms 11-15 15:56:38.073: W/ActivityManager(77): Launch timeout has expired, giving up wake lock! 11-15 15:56:38.510: W/ActivityManager(77): Activity idle timeout for ActivityRecord{4119aad0 com.soft.test/.myActivity} 11-15 15:56:38.563: W/NetworkManagementSocketTagger(77): setKernelCountSet(10009, 0) failed with errno -2 11-15 15:56:54.973: D/dalvikvm(980): GC_CONCURRENT freed 93K, 3% free 7095K/7303K, paused 7ms+27ms 11-15 15:57:00.052: I/InputReader(77): Reconfiguring input devices. changes=0x00000004 11-15 15:57:00.052: I/InputReader(77): Device reconfigured: id=0, name='qwerty2', surface size is now 320x480, mode is 1 11-15 15:57:00.052: W/SurfaceFlinger(35): createScreenshotSurface failed (Function not implemented) 11-15 15:57:00.062: I/ActivityManager(77): Config changed: {1.0 310mcc260mnc en_US layoutdir=0 sw320dp w320dp h407dp smll port finger -keyb/v/h tball/v s.14} 11-15 15:57:01.072: D/dalvikvm(980): newInstance failed: no <init>() 11-15 15:57:01.072: D/AndroidRuntime(980): Shutting down VM 11-15 15:57:01.082: W/dalvikvm(980): threadid=1: thread exiting with uncaught exception (group=0x409c01f8) 11-15 15:57:01.122: E/AndroidRuntime(980): FATAL EXCEPTION: main 11-15 15:57:01.122: E/AndroidRuntime(980): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.soft.test/com.soft.test.myActivity}: android.support.v4.app.Fragment$InstantiationException: Unable to instantiate fragment com.soft.test.HistoryDialogFragment: make sure class name exists, is public, and has an empty constructor that is public 11-15 15:57:01.122: E/AndroidRuntime(980): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1956) 11-15 15:57:01.122: E/AndroidRuntime(980): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981) 11-15 15:57:01.122: E/AndroidRuntime(980): at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:3351) 11-15 15:57:01.122: E/AndroidRuntime(980): at android.app.ActivityThread.access$700(ActivityThread.java:123) 11-15 15:57:01.122: E/AndroidRuntime(980): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1151) 11-15 15:57:01.122: E/AndroidRuntime(980): at android.os.Handler.dispatchMessage(Handler.java:99) 11-15 15:57:01.122: E/AndroidRuntime(980): at android.os.Looper.loop(Looper.java:137) 11-15 15:57:01.122: E/AndroidRuntime(980): at android.app.ActivityThread.main(ActivityThread.java:4424) 11-15 15:57:01.122: E/AndroidRuntime(980): at java.lang.reflect.Method.invokeNative(Native Method) 11-15 15:57:01.122: E/AndroidRuntime(980): at java.lang.reflect.Method.invoke(Method.java:511) 11-15 15:57:01.122: E/AndroidRuntime(980): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 11-15 15:57:01.122: E/AndroidRuntime(980): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 11-15 15:57:01.122: E/AndroidRuntime(980): at dalvik.system.NativeStart.main(Native Method) 11-15 15:57:01.122: E/AndroidRuntime(980): Caused by: android.support.v4.app.Fragment$InstantiationException: Unable to instantiate fragment com.soft.test.HistoryDialogFragment: make sure class name exists, is public, and has an empty constructor that is public 11-15 15:57:01.122: E/AndroidRuntime(980): at android.support.v4.app.Fragment.instantiate(Fragment.java:399) 11-15 15:57:01.122: E/AndroidRuntime(980): at android.support.v4.app.FragmentState.instantiate(Fragment.java:97) 11-15 15:57:01.122: E/AndroidRuntime(980): at android.support.v4.app.FragmentManagerImpl.restoreAllState(FragmentManager.java:1760) 11-15 15:57:01.122: E/AndroidRuntime(980): at android.support.v4.app.FragmentActivity.onCreate(FragmentActivity.java:200) 11-15 15:57:01.122: E/AndroidRuntime(980): at com.soft.test.myActivity.onCreate(myActivity.java:66) 11-15 15:57:01.122: E/AndroidRuntime(980): at android.app.Activity.performCreate(Activity.java:4465) 11-15 15:57:01.122: E/AndroidRuntime(980): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049) 11-15 15:57:01.122: E/AndroidRuntime(980): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920) 11-15 15:57:01.122: E/AndroidRuntime(980): ... 12 more 11-15 15:57:01.122: E/AndroidRuntime(980): Caused by: java.lang.InstantiationException: can't instantiate class com.soft.test.HistoryDialogFragment; no empty constructor 11-15 15:57:01.122: E/AndroidRuntime(980): at java.lang.Class.newInstanceImpl(Native Method) 11-15 15:57:01.122: E/AndroidRuntime(980): at java.lang.Class.newInstance(Class.java:1319) 11-15 15:57:01.122: E/AndroidRuntime(980): at android.support.v4.app.Fragment.instantiate(Fragment.java:388) 11-15 15:57:01.122: E/AndroidRuntime(980): ... 19 more 11-15 15:57:01.192: W/ActivityManager(77): Force finishing activity com.soft.test/.myActivity 11-15 15:57:01.312: I/ARMAssembler(35): generated scanline__00000077:03545404_00008500_00000000 [ 29 ipp] (43 ins) at [0x41357cd8:0x41357d84] in 5238733 ns 11-15 15:57:01.322: W/WindowManager(77): Failure taking screenshot for (120x162) to layer 21010 11-15 15:57:01.832: W/ActivityManager(77): Activity pause timeout for ActivityRecord{4119aad0 com.soft.test/.myActivity} 11-15 15:57:01.932: W/NetworkManagementSocketTagger(77): setKernelCountSet(10009, 1) failed with errno -2 11-15 15:57:02.152: D/dalvikvm(141): GC_CONCURRENT freed 376K, 21% free 7320K/9159K, paused 4ms+121ms 11-15 15:57:02.282: D/dalvikvm(183): GC_EXPLICIT freed 201K, 8% free 7501K/8071K, paused 22ms+14ms 11-15 15:57:02.292: E/StrictMode(183): class com.android.launcher2.Launcher; instances=2; limit=1 11-15 15:57:02.292: E/StrictMode(183): android.os.StrictMode$InstanceCountViolation: class com.android.launcher2.Launcher; instances=2; limit=1 11-15 15:57:02.292: E/StrictMode(183): at android.os.StrictMode.setClassInstanceLimit(StrictMode.java:1) 11-15 15:57:03.432: W/NetworkManagementSocketTagger(77): setKernelCountSet(10046, 0) failed with errno -2 11-15 15:57:03.792: D/dalvikvm(209): GC_CONCURRENT freed 155K, 4% free 6694K/6919K, paused 4ms+3ms 11-15 15:57:04.933: I/Process(980): Sending signal. PID: 980 SIG: 9 11-15 15:57:05.273: I/ActivityManager(77): Process com.soft.test (pid 980) has died. 11-15 15:57:05.273: I/WindowManager(77): WIN DEATH: Window{4122bc60 com.soft.test/com.soft.test.myActivity paused=false} 11-15 15:57:05.513: D/dalvikvm(77): GC_EXPLICIT freed 237K, 11% free 8967K/10055K, paused 6ms+11ms 11-15 15:57:13.477: W/ActivityManager(77): Activity destroy timeout for ActivityRecord{4119aad0 com.soft.test/.myActivity}
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3 answers

When the phone turns, activity is always destroyed and recreated. This means that he will also try to recreate the Fragment. Since your fragment lacks an empty constructor, it cannot be recreated, so the error is: " com.soft.test.HistoryDialogFragment; no empty constructor ".

You can also use " setRetainInstance(true) " in your onCreate () snippets to make it not killed, but temporarily removed (removed from the action).

Here is an example: http://android-er.blogspot.se/2012/08/retain-fragment-instance-across.html

You can find out more here: fooobar.com/questions/14258 / ...

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If you agree to close DialogFragment while rotating the screen, this is another possible solution. Store the current_dialog instance variable that tracks the DialogFragment that is currently open, then add this code to your onPause() :

 if (current_dialog != null) current_dialog.dismiss();
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Try adding android: configChanges = "orientation" for your activity in AndroidManifest.xml

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Source: https://habr.com/ru/post/1446278/

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