解决DialogFragment调用show方法报错问题

最新推荐文章于 2025-11-10 10:11:48 发布

转载最新推荐文章于 2025-11-10 10:11:48 发布 · 4.4k 阅读

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#DialogFragment调用show方法异常 #java.lang.IllegalStateExceptio

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针对Android中DialogFragment在特定情况下出现的Caused by: java.lang.IllegalStateException: Cannot perform this action after onSaveInstanceState错误，本文提供了一个基类ResolveShowBugDialogFragment来解决此问题。

在Android 3.0以后，Google官方推荐使用DialogFragment代替Dialog使用，但是这个有个bug，就是DialogFragment调用show方法会出现

Caused by: java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState

这个恶心的错误，如何解决呢？

解决方案就是写一个基类继承DialogFragment

public class ResolveShowBugDialogFragment extends DialogFragment {

    @Override
    public void show(FragmentManager manager, String tag) {
        try {
            FragmentTransaction ft = manager.beginTransaction();
            ft.add(this, tag).addToBackStack(null);
            ft.commitAllowingStateLoss();
        } catch (IllegalStateException e) {
        }
    }

    boolean mIsStateAlreadySaved = false;
    boolean mPendingShowDialog = false;

    @Override
    public void onResume() {
        onResumeFragments();
        super.onResume();
    }

    public void onResumeFragments() {
        mIsStateAlreadySaved = false;
        if (mPendingShowDialog) {
            mPendingShowDialog = false;
            showSnoozeDialog();
        }
    }

    @Override
    public void onPause() {
        super.onPause();
        mIsStateAlreadySaved = true;
    }

    private void showSnoozeDialog() {
        if (mIsStateAlreadySaved) {
            mPendingShowDialog = true;
        } else {
            FragmentManager fm = getFragmentManager();
            ResolveShowBugDialogFragment snoozeDialog = new ResolveShowBugDialogFragment();
            snoozeDialog.show(fm, "BaseDialogFragment");
        }
    }
}

参考链接： https://stackoverflow.com/questions/14262312/java-lang-illegalstateexception-can-not-perform-this-action-after-onsaveinstanc