我有一个名为
在
在
LoginActivity
的页面(用户登录)。它本质上是一个自己主题的Activity
,看起来像一个对话框。它出现在一个SherlockFragmentActivity
上方。我的要求是:如果登录成功,应该有两个FragmentTransaction
来更新视图。以下是代码:在
LoginActivity
中,如果登录成功,setResult(1, new Intent());
在
SherlockFragmentActivity
中:@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == 1) {
LoggedStatus = PrefActivity.getUserLoggedInStatus(this);
FragmentTransaction t = MainFragmentActivity.this.getSupportFragmentManager().beginTransaction();
SherlockListFragment mFrag = new MasterFragment();
t.replace(R.id.menu_frame, mFrag);
t.commit();
// Set up Main Screen
FragmentTransaction t2 = MainFragmentActivity.this.getSupportFragmentManager().beginTransaction();
SherlockListFragment mainFrag = new FeaturedFragment();
t2.replace(R.id.main_frag, mainFrag);
t2.commit();
}
}
第一次提交时,它会崩溃并显示以下LogCat:
E/AndroidRuntime(32072): Caused by: java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
E/AndroidRuntime(32072): at android.support.v4.app.FragmentManagerImpl.checkStateLoss(FragmentManager.java:1299)
E/AndroidRuntime(32072): at android.support.v4.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1310)
E/AndroidRuntime(32072): at android.support.v4.app.BackStackRecord.commitInternal(BackStackRecord.java:541)
E/AndroidRuntime(32072): at android.support.v4.app.BackStackRecord.commit(BackStackRecord.java:525)
E/AndroidRuntime(32072): at com.kickinglettuce.rate_this.MainFragmentActivity.onActivityResult(MainFragmentActivity.java:243)
E/AndroidRuntime(32072): at android.app.Activity.dispatchActivityResult(Activity.java:5293)
E/AndroidRuntime(32072): at android.app.ActivityThread.deliverResults(ActivityThread.java:3315)