相关疑难解决方法(0)

问题描述

我写的应用程序有3个片段.当我按下搜索按钮时,主片段活动有一个带搜索按钮的搜索框,调用下面的函数:

Fragments.values()[tabControl.getCurrentItem()].getFragment().search(tv.getText().toString(), MainActivity.this.getApplicationContext());

一切正常,直到我按下HOME按钮等待30分钟并重新启动应用程序,在我按下FragmentYellowPagesFragment应用程序中的搜索按钮后崩溃

lvYellowPages.setVisibility(View.VISIBLE);

因为lvYellowPages在这种情况下是null,但在日志中我可以看到该onCreateView函数被调用.能帮帮我吗,我可以和你分享我的代码.

FragmentPagerAdapter

public class FragmentAdapter extends FragmentPagerAdapter {

    Fragments[] mFragments;

    public FragmentAdapter(FragmentManager fm) {
        super(fm);

        mFragments = Fragments.values();
    }

    public enum Fragments {

        Favorites(App.getStringByResId(R.string.favorites), new FragmentFavorites()),
        Categories(App.getStringByResId(R.string.categories), new FragmentCategories()),
        YellowPages(App.getStringByResId(R.string.yellow_pages), new FragmentYellowPages());

        Fragments(String title, BaseListFragment fragment) {
            this.mTitle = title;
            this.mFragment = fragment;
        }

        String mTitle;
        BaseListFragment mFragment;

        public String getTitle() {
            return mTitle;
        }

        public BaseListFragment getFragment() {
            return mFragment;
        }
    };

    @Override
    public CharSequence getPageTitle(int position) …