Question

我正在尝试使用getString作为我的viewpager选项卡标题，所以我可以支持多语言，但每次我使用getString我得到错误片段没有附加到日志中的活动和应用程序强制关闭！

这是我的片段代码

public class RecipesFragment extends Fragment {

ViewPager pager;
ViewPagerAdapter adapter;
SlidingTabLayout tabs;
CharSequence[] Titles = {(getResources().getString(R.string.invcraftingcardtitle)), (getResources().getString(R.string.wbcraftingcardtitle)), (getResources().getString(R.string.ovencraftingcardtitle)), (getResources().getString(R.string.painttitle))};
int Numboftabs = 4;

@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    View v = inflater.inflate(R.layout.recipes_fragment, container, false);
    return v;


}


@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);

    // Creating The ViewPagerAdapter and Passing Fragment Manager, Titles fot the Tabs and Number Of Tabs.
    adapter = new ViewPagerAdapter(getActivity().getSupportFragmentManager(), Titles, Numboftabs);

    // Assigning ViewPager View and setting the adapter
    pager = (ViewPager) getView().findViewById(R.id.pager);
    pager.setAdapter(adapter);

    // Assiging the Sliding Tab Layout View
    tabs = (SlidingTabLayout) getView().findViewById(R.id.tabs);
    tabs.setDistributeEvenly(true); // To make the Tabs Fixed set this true, This makes the tabs Space Evenly in Available width

    // Setting Custom Color for the Scroll bar indicator of the Tab View
    tabs.setCustomTabColorizer(new SlidingTabLayout.TabColorizer() {
        @Override
        public int getIndicatorColor(int position) {
            return getResources().getColor(R.color.tabsScrollColor);
        }
    });

    // Setting the ViewPager For the SlidingTabsLayout
    tabs.setViewPager(pager);


}

}

Answer 1

这是因为在调用Titles后可以使用getResources作为onAttach的变量

尝试在onAttach方法中初始化它，如下所示：

@Override
public void onAttach(Activity activity) {
    super.onAttach(activity);
    Titles = {(getResources().getString(R.string.invcraftingcardtitle)), (getResources().getString(R.string.wbcraftingcardtitle)), (getResources().getString(R.string.ovencraftingcardtitle)), (getResources().getString(R.string.painttitle))};
}

Answer 2

问题是getResources()实际上调用getActivity().getResources()并且您在变量启动中使用它（在附加到活动之前）。尝试在需要使用之前设置titles变量。

我也会避免让变量以大写字母开头，因为这会使它们看起来好像是类。

android片段没有附加到活动

2 个答案: