相关疑难解决方法(0)

我正在一个包含三个选项卡的屏幕上工作我试图在选项卡中添加一个带有我的文本的图标,我希望图像在文本的上方,它们之间应该有一些空间,这是我的代码.

public class HomeScreen extends AppCompatActivity
    implements NavigationView.OnNavigationItemSelectedListener {

private Toolbar toolbar;
private ViewPager pager;
private ViewPagerAdapter adapter;
private SlidingTabLayout tabs;
private CharSequence Titles[] = {"News", "Most Views", "Chart"};
int Numboftabs = 3;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_home_screen);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
    ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
            this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
    drawer.setDrawerListener(toggle);
    toggle.syncState();

    NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
    navigationView.setNavigationItemSelectedListener(this);

    //MAhmoud Code Addtion
    // getSupportActionBar().setDisplayHomeAsUpEnabled(true);
   // getSupportActionBar().setIcon(R.drawable.ic_launcher);

    // Creating The …

我正在使用 TabbedPage 在xaml. 默认选项卡图标和文本大小很大，所以我需要减小图标和文本的大小。下面是我main.xaml设置图标的代码。

<TabbedPage  xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"              
             xmlns:local="clr-namespace:TabbedApp">
    <local:DairyTabs Icon="dairy" HeightRequest="10" WidthRequest="10" ></local:DairyTabs>
    <local:Mykid Icon="kid" ></local:Mykid>
    <local:Event Icon="about"></local:Event>    
</TabbedPage>

这是选项卡的第一页，我将选项卡的标题指定为 Title="Dairy"

<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"              
             Title="Dairy"> 
    <ContentPage.Content>
        <StackLayout>
            <Button x:Name="btnDemo" Text="Go for 2nd page"></Button>
        </StackLayout>
    </ContentPage.Content>
</ContentPage>

请参阅下面的屏幕截图，您可以在其中看到图标和标签文本。

我正在尝试使用选项卡和pagerview进行活动，我在博客中找到了此代码，但它并不像使选项卡具有图标而不是文本...我将代码放在：

ViewPagerAdapter.java

class ViewPagerAdapter extends FragmentPagerAdapter {
    private final List<Fragment> mFragmentList = new ArrayList<>();
    private final List<String> mFragmentTitleList = new ArrayList<>();

    public ViewPagerAdapter(FragmentManager manager) {
        super(manager);
    }

    @Override
    public Fragment getItem(int position) {
        return mFragmentList.get(position);
    }

    @Override
    public int getCount() {
        return mFragmentList.size();
    }

    public void addFrag(Fragment fragment, String title) {
        mFragmentList.add(fragment);
        mFragmentTitleList.add(title);
    }

    @Override
    public CharSequence getPageTitle(int position) {
        return mFragmentTitleList.get(position);
    }
}

Tablayout_in_Android.java

public class Tablayout_in_Android extends Fragment {

    public Tablayout_in_Android() {
        // Required empty public constructor
    } …