Question

嗨我有一个带有textview的fragmentA。当我点击它时，我去了fragmentB，它有一个项目列表。当点击listitem时，iam返回fragmentA并使用listitem值更新textview。现在再次当iam点击textview时它抛出 Illegalstateexception：无法更改片段的标签

boreselect.setOnClickListener(new OnClickListener() {
             Fragment newContentbore = new BoreValuesListFragment();
            @Override
            public void onClick(View v) {

                Fragment currentFragment = getFragmentManager().findFragmentByTag(FragmentChangeActivity.mFragmentStack.peek());
                String tagbore = newContentbore.toString();
                FragmentChangeActivity.mFragmentStack.add(tagbore);
                FragmentTransaction transaction = getFragmentManager().beginTransaction();
                transaction.add(R.id.content_frame, newContentbore,tagbore);
                transaction.hide(currentFragment);
                transaction.addToBackStack(tagbore);
                transaction.commit();
            }
        });

我的堆栈跟踪

01-20 00:14:59.819: E/AndroidRuntime(26655): FATAL EXCEPTION: main
01-20 00:14:59.819: E/AndroidRuntime(26655): java.lang.IllegalStateException: Can't change tag of fragment BoreValuesListFragment{42a283a0 #2 id=0x7f090044 BoreValuesListFragment{42a283a0}}: was BoreValuesListFragment{42a283a0} now BoreValuesListFragment{42a283a0 #2 id=0x7f090044 BoreValuesListFragment{42a283a0}}
01-20 00:14:59.819: E/AndroidRuntime(26655):    at android.support.v4.app.BackStackRecord.doAddOp(BackStackRecord.java:351)
01-20 00:14:59.819: E/AndroidRuntime(26655):    at android.support.v4.app.BackStackRecord.add(BackStackRecord.java:342)

Answer 1

这可能是因为你要添加相同的片段实例三时间到列表。您应该为每个页面创建一个新实例。

Android错误：无法更改片段的标记。不使用viewpager

1 个答案: