tablayout用法

最新推荐文章于 2021-05-26 05:39:27 发布

原创最新推荐文章于 2021-05-26 05:39:27 发布 · 283 阅读

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CC 4.0 BY-SA版权

1.首先添加依赖：

com.android.support:design(com.android.support:design:26.0.0-alpha1)

2.主要代码：

public class MainActivity extends AppCompatActivity {

    private String[] arr = new String[]{"军事","头条","今日","每日","123","234","345","456","567","678","789","890"};
    private List<TextView> list;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //找到控件
        ViewPager viewPager = (ViewPager) findViewById(R.id.viewpager);
        TabLayout tab = (TabLayout) findViewById(R.id.tl);
        //设置可以滑动
        tab.setTabMode(TabLayout.MODE_SCROLLABLE);
        //与viewpager关联
        tab.setupWithViewPager(viewPager);
        //初始数据
        list = new ArrayList<TextView>();
        for (int i = 0; i < arr.length; i++) {
            //tab.addTab(tab.newTab().setText(arr[i]));
            TextView textView = new TextView(this);
            textView.setText(arr[i]);
            textView.setTextColor(Color.BLUE);
            textView.setTextSize(24);
            list.add(textView);
        }
        //适配器
        viewPager.setAdapter(new PagerAdapter() {
            @Override
            public int getCount() {
                return list.size();
            }
            @Override
            public boolean isViewFromObject(View view, Object object) {
                return view == object;
            }
            @Override
            public Object instantiateItem(ViewGroup container, int position) {
                container.addView(list.get(position));
                return list.get(position);
            }
            @Override
            public void destroyItem(ViewGroup container, int position, Object object) {
                container.removeView((View) object);
            }
            //tablayout与viewpager联动
            @Override
            public CharSequence getPageTitle(int position) {
                return arr[position];
            }
        });
    }
}

3.XML布局：

    <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        tools:context="com.ju.tablayout.MainActivity">

<android.support.design.widget.TabLayout
        android:id="@+id/tl"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        />
<android.support.v4.view.ViewPager
        android:id="@+id/viewpager"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

</LinearLayout>