Question

我是android的新手，非常感谢一些帮助。

我正在尝试在我的ViewPager底部显示标签。但问题是TabLayout显示没有任何文字。

这是我在UploadActivity.java类中编写的内容

require

在XML内部，我有

public class UploadActivity extends AppCompatActivity {

    @Override
    public void onCreate(Bundle savedInstanceState){
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_upload);

        ViewPager vpager = (ViewPager)findViewById(R.id.upload_viewpager);
        PagerAdapter adapter = new UploadPagerAdapter(getSupportFragmentManager());
        vpager.setAdapter(adapter);
    }

    public static class UploadPagerAdapter extends FragmentPagerAdapter{

        String[] titles = new String[]{"Gallery", "Photo", "Video"};
        public UploadPagerAdapter(FragmentManager manager){
            super(manager);
        }
        @Override
        public Fragment getItem(int position) {
            switch(position){
                case 0:
                    return new RestaurantListFragment();
                case 1:
                    return new Fragment();
                case 2:
                    return new Fragment();
            }

            return null;
        }

        @Override
        public CharSequence getPageTitle(int position) {
            // Generate title based on item position
            return titles[position];
        }

        @Override
        public int getCount() {
            return 3;
        }
    } 
}

我已经在SOC上尝试了多个例子，但这没有帮助。请指教。

提前致谢

Answer 1

在这里找到了问题：

Made string Array一个静态变量，它开始工作：

public static String[] titles = new String[]{"Gallery", "Photo", "Video"};

Tablayout不会在viewpager底部显示制表符标题

1 个答案: