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android - 如何修复 onSaveInstanceState 中的 java.lang.IllegalStateException

转载 作者:行者123 更新时间:2023-11-29 20:59:23 25 4
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可能导致此异常的原因是什么?

E/AndroidRuntime(16901): FATAL EXCEPTION: main
E/AndroidRuntime(16901): Process: com.borqs.karbonn.music, PID: 16901
E/AndroidRuntime(16901): java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
E/AndroidRuntime(16901): at android.app.FragmentManagerImpl.checkStateLoss(FragmentManager.java:1323)
E/AndroidRuntime(16901): at android.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1341)
E/AndroidRuntime(16901): at android.app.BackStackRecord.commitInternal(BackStackRecord.java:609)
E/AndroidRuntime(16901): at android.app.BackStackRecord.commit(BackStackRecord.java:587)
E/AndroidRuntime(16901): at com.borqs.music.MusicHubMainActivity.onNavigationItemSelected(MusicHubMainActivity.java:1167)
E/AndroidRuntime(16901): at com.android.internal.widget.ActionBarView$1.onItemSelected(ActionBarView.java:148)
E/AndroidRuntime(16901): at android.widget.AdapterView.fireOnSelected(AdapterView.java:893)
E/AndroidRuntime(16901): at android.widget.AdapterView.access$200(AdapterView.java:48)
E/AndroidRuntime(16901): at android.widget.AdapterView$SelectionNotifier.run(AdapterView.java:861)
E/AndroidRuntime(16901): at android.os.Handler.handleCallback(Handler.java:808)
E/AndroidRuntime(16901): at android.os.Handler.dispatchMessage(Handler.java:103)
E/AndroidRuntime(16901): at android.os.Looper.loop(Looper.java:193)
E/AndroidRuntime(16901): at android.app.ActivityThread.main(ActivityThread.java:5299)
E/AndroidRuntime(16901): at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime(16901): at java.lang.reflect.Method.invoke(Method.java:515)
E/AndroidRuntime(16901): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:825)
E/AndroidRuntime(16901): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:641)^M
E/AndroidRuntime(16901): at dalvik.system.NativeStart.main(Native Method)

这是我的onSave实例代码

@Override
public void onSaveInstanceState(Bundle state)
{
super.onSaveInstanceState(state);
saveInstance =true;
if (state == null)
{
FragmentManager mFragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = mFragmentManager.beginTransaction();
MediaPlaybackFragment fragment = new MediaPlaybackFragment();
fragmentTransaction.add(R.id.content_frame, fragment);
fragmentTransaction.commit();
} else {
state.putInt("position", mPostion);
selectedTab = tabHost.getCurrentTab();
state.putInt("tabhostselected", selectedTab);
state.putBoolean("isSaveInstance", saveInstance);
// state.putBoolean("draweropened", mDrawergarment.isDrawerOpened());
}
}

这是我的导航代码

@Override
public boolean onNavigationItemSelected(int position, long itemId) {
Fragment newFragment = null;
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction ft = fragmentManager.beginTransaction();
newFragment = new MediaPlaybackFragment();
ft.replace(R.id.content_frame, newFragment, "Music");
ft.commit();
}

Any help would be much appreciated, if you need more information please ask.

最佳答案

改变

fragmentTransaction.commit();

fragmentTransaction.commitAllowingStateLoss();

可能您在代码的其他地方提交了您的交易——您也应该在那里使用 commitAllowingStateLoss()。但我建议您重写代码以避免在 onSaveInstanceState() 之后提交

关于android - 如何修复 onSaveInstanceState 中的 java.lang.IllegalStateException,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/26624009/

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