Java 错误:";限定符必须是表达式";-安卓工作室
活动:Java 错误:";限定符必须是表达式";-安卓工作室,java,android,android-studio,layout,android-tablayout,Java,Android,Android Studio,Layout,Android Tablayout,活动: public class PreviewsFragment extends Fragment { private ViewPager mPager; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { ViewGroup root = (ViewGroup) inflater.inflate(R.layout.
public class PreviewsFragment extends Fragment {
private ViewPager mPager;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
ViewGroup root = (ViewGroup) inflater.inflate(R.layout.section_all_icons, container, false);
ActionBar toolbar = ((AppCompatActivity) getActivity()).getSupportActionBar();
if (toolbar != null)
toolbar.setTitle(R.string.section_two);
mPager = (ViewPager) root.findViewById(R.id.pager);
mPager.setAdapter(new MyPagerAdapter(getActivity().getSupportFragmentManager()));
TabLayout mTabs = (TabLayout) layout.findViewById(R.id.tabs); //layout: qualifier must be an expression.
mTabs.setupWithViewPager(mPager);
mTabs.setTabTextColors(getResources().getColor(R.color.semitransparent_white),
getResources().getColor(android.R.color.white));
mTabs.setSelectedTabIndicatorColor(getResources().getColor(R.color.accent));
mTabs.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
@Override
public void onTabSelected(TabLayout.Tab tab) {
mPager.setCurrentItem(tab.getPosition());
}
@Override
public void onTabUnselected(TabLayout.Tab tab) {
}
@Override
public void onTabReselected(TabLayout.Tab tab) {
}
});
return root;
}
@Override
public void onResume() {
super.onResume();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
Toolbar appbar = (Toolbar) getActivity().findViewById(R.id.toolbar);
appbar.setElevation(0);
}
}
@Override
public void onPause() {
super.onPause();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
Toolbar appbar = (Toolbar) getActivity().findViewById(R.id.toolbar);
appbar.setElevation((int) getResources().getDimension(R.dimen.toolbar_elevation));
}
}
class MyPagerAdapter extends FragmentStatePagerAdapter {
final String[] tabs;
public MyPagerAdapter(android.support.v4.app.FragmentManager fm) {
super(fm);
tabs = getResources().getStringArray(R.array.tabs);
}
@Override
public Fragment getItem(int position) {
Fragment f = new Fragment();
switch (position) {
case 0:
f = IconsFragment.newInstance(R.array.latest);
break;
case 1:
f = IconsFragment.newInstance(R.array.system);
break;
case 2:
f = IconsFragment.newInstance(R.array.google);
break;
case 3:
f = IconsFragment.newInstance(R.array.games);
break;
case 4:
f = IconsFragment.newInstance(R.array.icon_pack);
break;
case 5:
f = IconsFragment.newInstance(R.array.drawer);
break;
}
return f;
}
@Override
public CharSequence getPageTitle(int position) {
return tabs[position];
}
@Override
public int getCount() {
return tabs.length;
}
}
我对TabLayout mtab=(TabLayout)layout.findviewbyd(R.id.tabs)有问题因为布局不被视为限定符。我试着编造一些东西,但还是不起作用。
谢谢。限定符必须是表达式
***Appears when you skipped something in the root of the path. Exemple:***
(错误):package.method(不带类)
(很好的例子:)package.class.method**用root替换布局并测试它。我已经尝试过了,但什么都没有。在您的onCreate try中:
更改您的视图组root=(视图组)充气器。充气(R.layout.section\u所有图标,容器,false)代码>至视图根=充气机。充气(R.layout.section\u所有图标,容器,错误)代码>