Crash when exporting on API 26

[pegasign]

04-07 17:56:19.460 5086-5086/com.elixsr.portforwarder W/Ads: The webview is destroyed. Ignoring action. 04-07 17:56:20.014 5086-5086/com.elixsr.portforwarder E/AndroidRuntime: FATAL EXCEPTION: main Process: com.elixsr.portforwarder, PID: 5086 android.os.FileUriExposedException: file:///storage/emulated/0/Android/data/com.elixsr.portforwarder/cache/fwd_rule_list3598144147339057752.json exposed beyond app through ClipData.Item.getUri() at android.os.StrictMode.onFileUriExposed(StrictMode.java:1958) at android.net.Uri.checkFileUriExposed(Uri.java:2356) at android.content.ClipData.prepareToLeaveProcess(ClipData.java:941) at android.content.Intent.prepareToLeaveProcess(Intent.java:9735) at android.content.Intent.prepareToLeaveProcess(Intent.java:9741) at android.content.Intent.prepareToLeaveProcess(Intent.java:9720) at android.app.Instrumentation.execStartActivity(Instrumentation.java:1742) at android.app.Activity.startActivityForResult(Activity.java:5153) at android.app.Activity.startActivityFromFragment(Activity.java:5129) at android.app.Activity$HostCallbacks.onStartActivityFromFragment(Activity.java:7602) at android.app.Fragment.startActivity(Fragment.java:1179) at android.app.Fragment.startActivity(Fragment.java:1158) at com.elixsr.portforwarder.ui.preferences.SettingsFragment.exportRules(SettingsFragment.java:325) at com.elixsr.portforwarder.ui.preferences.SettingsFragment.access$400(SettingsFragment.java:72) at com.elixsr.portforwarder.ui.preferences.SettingsFragment$4.onPreferenceClick(SettingsFragment.java:206) at android.preference.Preference.performClick(Preference.java:1136) at android.preference.PreferenceScreen.onItemClick(PreferenceScreen.java:249) at android.widget.AdapterView.performItemClick(AdapterView.java:318) at android.widget.AbsListView.performItemClick(AbsListView.java:1165) at android.widget.AbsListView$PerformClick.run(AbsListView.java:3134) at android.widget.AbsListView$3.run(AbsListView.java:4049) at android.os.Handler.handleCallback(Handler.java:789) at android.os.Handler.dispatchMessage(Handler.java:98) at android.os.Looper.loop(Looper.java:164) at android.app.ActivityThread.main(ActivityThread.java:6541) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767) 04-07 17:56:20.118 1406-5140/? W/audio_hw_generic: Not supplying enough data to HAL, expected position 1004859 , only wrote 1002240 04-07 17:56:20.122 1406-5140/? W/audio_hw_generic: Not supplying enough data to HAL, expected position 1002384 , only wrote 1002240 04-07 17:56:20.133 5086-5086/com.elixsr.portforwarder E/UncaughtException: android.os.FileUriExposedException: file:///storage/emulated/0/Android/data/com.elixsr.portforwarder/cache/fwd_rule_list3598144147339057752.json exposed beyond app through ClipData.Item.getUri() at android.os.StrictMode.onFileUriExposed(StrictMode.java:1958) at android.net.Uri.checkFileUriExposed(Uri.java:2356) at android.content.ClipData.prepareToLeaveProcess(ClipData.java:941) at android.content.Intent.prepareToLeaveProcess(Intent.java:9735) at android.content.Intent.prepareToLeaveProcess(Intent.java:9741) at android.content.Intent.prepareToLeaveProcess(Intent.java:9720) at android.app.Instrumentation.execStartActivity(Instrumentation.java:1742) at android.app.Activity.startActivityForResult(Activity.java:5153) at android.app.Activity.startActivityFromFragment(Activity.java:5129) at android.app.Activity$HostCallbacks.onStartActivityFromFragment(Activity.java:7602) at android.app.Fragment.startActivity(Fragment.java:1179) at android.app.Fragment.startActivity(Fragment.java:1158) at com.elixsr.portforwarder.ui.preferences.SettingsFragment.exportRules(SettingsFragment.java:325) at com.elixsr.portforwarder.ui.preferences.SettingsFragment.access$400(SettingsFragment.java:72) at com.elixsr.portforwarder.ui.preferences.SettingsFragment$4.onPreferenceClick(SettingsFragment.java:206) at android.preference.Preference.performClick(Preference.java:1136) at android.preference.PreferenceScreen.onItemClick(PreferenceScreen.java:249) at android.widget.AdapterView.performItemClick(AdapterView.java:318) at android.widget.AbsListView.performItemClick(AbsListView.java:1165) at android.widget.AbsListView$PerformClick.run(AbsListView.java:3134) at android.widget.AbsListView$3.run(AbsListView.java:4049) at android.os.Handler.handleCallback(Handler.java:789) at android.os.Handler.dispatchMessage(Handler.java:98) at android.os.Looper.loop(Looper.java:164) at android.app.ActivityThread.main(ActivityThread.java:6541) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767) 04-07 17:56:20.377 5086-5635/com.elixsr.portforwarder I/FirebaseCrash: Sending crashes 04-07 17:56:20.384 1732-2469/system_process W/ActivityManager: Force finishing activity c