Android ViewPager

viewpager

实现滑动效果的控件
使用：可以添加多个Fragment
适配器：viewPagerAdapter
作用：可以添加Fragment和TabLayout
用法：
自定义类继承viewPagerAdapter
重写四个方法
构造（调用父类构造）
getItem（int i）{Fragment集合 .get（i）}
getcount（）{Fragment集合.size（）}
getpageTitle（int i）{title集合.get(i)}
TabLayout：实现选项卡效果，配合viewPager搭配使用
用法：
导依赖
加标签
设置常用属性
tableColor:设置文字颜色；
tabSelectTextColor：设置选中时的颜色
tabIndicatorColor：设置横线颜色
tabIndicatorHeight：设置横线高度
tabMode=“scrollable” 支持翻页

写Fragment

// An highlighted block
public class Fragment3 extends Fragment {
    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        return  inflater.inflate(R.layout.view3,container,false);
    }
}

主类

// An highlighted block
ArrayList<Fragment> fragments =new ArrayList<>();
        Fragment1 fragment1=new Fragment1();
        Fragment2 fragment2=new Fragment2();
        Fragment3 fragment3=new Fragment3();
        Fragment4 fragment4=new Fragment4();
        Fragment5 fragment5=new Fragment5();
        fragments.add(fragment1);
        fragments.add(fragment2);
        fragments.add(fragment3);
        fragments.add(fragment4);
        fragments.add(fragment5);
        MyAdapter myAdapter=new MyAdapter(getSupportFragmentManager(),fragments);
        viewPager.setAdapter(myAdapter);

适配器

// An highlighted block
public class MyAdapter extends FragmentPagerAdapter {
    ArrayList<Fragment> fragments;

    public MyAdapter(FragmentManager fm, ArrayList<Fragment> fragments) {
        super(fm);
        this.fragments=fragments;

    }

同时添加Fragment和Tablayout的适配器

// An highlighted block
public class MyAdapter2 extends FragmentPagerAdapter {
    ArrayList<Fragment> fragments;
    ArrayList<String> title;

    public MyAdapter2(FragmentManager fm, ArrayList<Fragment> fragments, ArrayList<String> title) {
        super(fm);
        this.fragments=fragments;
        this.title=title;

    }

    @Override
    public Fragment getItem(int i) {
        return fragments.get(i);
    }

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

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