可能导致此异常的原因是什么?
E / AndroidRuntime(16901):FATAL EXCEPTION:main E / AndroidRuntime(16901):进程:com.borqs.karbonn.music,PID:16901 E / AndroidRuntime(16901):java.lang.IllegalStateException:无法执行此操作在onSaveInstanceState E / AndroidRuntime(16901)之后:在android.app.FragmentManagerImpl.checkStateLoss(FragmentManager.java:1323)E / AndroidRuntime(16901):在android.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1341)E / AndroidRuntime( 16901):在android.app.BackStackRecord.commitInternal(BackStackRecord.java:609)E / AndroidRuntime(16901):在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):在android.widget.AdapterView . 访问$ 200(AdapterView.java:48)E / AndroidRuntime(16901):在android.widget.AdapterView $ SelectionNotifier.run(AdapterView.java:861)E / AndroidRuntime(16901):在android.os.Handler.handleCallback(Handler) .java:808)E / AndroidRuntime(16901):在android.os.Handler.dispatchMessage(Handler.java:103)E / AndroidRuntime(16901):在android.os.Looper.loop(Looper.java:193)E / AndroidRuntime(16901):在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) ^ ME / 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.
1 回答
更改
至
可能你在代码中的其他地方提交了你的事务 - 你应该在那里使用commitAllowingStateLoss() . 但我建议你重写你的代码,以避免在onSaveInstanceState()后提交