是什么导致此异常?
E / AndroidRuntime(16901):致命异常:主要
E / AndroidRuntime(16901):进程:com.borqs.karbonn.music,PID:16901
E / AndroidRuntime(16901):java.lang.IllegalStateException:在onSaveInstanceState之后无法执行此操作
E / AndroidRuntime(16901):位于android.app.FragmentManagerImpl.checkStateLoss(FragmentManager.java:1323)
E / AndroidRuntime(16901):位于android.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1341)
E / AndroidRuntime(16901):位于android.app.BackStackRecord.commitInternal(BackStackRecord.java:609)
E / AndroidRuntime(16901):位于android.app.BackStackRecord.commit(BackStackRecord.java:587)
E / AndroidRuntime(16901):位于com.borqs.music.MusicHubMainActivity.onNavigationItemSelected(MusicHubMainActivity.java:1167)
E / AndroidRuntime(16901):位于com.android.internal.widget.ActionBarView $ 1.onItemSelected(ActionBarView.java:148)
E / AndroidRuntime(16901):位于android.widget.AdapterView.fireOnSelected(AdapterView.java:893)
E / AndroidRuntime(16901):位于android.widget.AdapterView.access $ 200(AdapterView.java:48)
E / AndroidRuntime(16901):位于android.widget.AdapterView $ SelectionNotifier.run(AdapterView.java:861)
E / AndroidRuntime(16901):位于android.os.Handler.handleCallback(Handler.java:808)
E / AndroidRuntime(16901):位于android.os.Handler.dispatchMessage(Handler.java:103)
E / AndroidRuntime(16901):位于android.os.Looper.loop(Looper.java:193)
E / AndroidRuntime(16901):位于android.app.ActivityThread.main(ActivityThread.java:5299)
E / AndroidRuntime(16901):位于java.lang.reflect.Method.invokeNative(本机方法)
E / AndroidRuntime(16901):位于java.lang.reflect.Method.invoke(Method.java:515)
E / AndroidRuntime(16901):位于com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:825)
E / AndroidRuntime(16901):位于com.android.internal.os.ZygoteInit.main(ZygoteInit.java:641)^ M
E / AndroidRuntime(16901):位于dalvik.system.NativeStart.main(本机方法)
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
更改
fragmentTransaction.commit();
至
fragmentTransaction.commitAllowingStateLoss();
可能您在代码中的其他位置提交了事务-您也应该在那里使用commitAllowingStateLoss()。但是我建议您重写代码,以避免在onSaveInstanceState()之后提交