2-VVI-材料设计之TabLayout下标签

[1].将下面线去掉，自定义条目样式，就可以实现下图效果
[2].以前实现这种效果一般用按钮组，有点麻烦
[3].Fragment同上篇

二、代码实现：

1.Activity的布局：a01_bottom.xml

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

    <android.support.v4.view.ViewPager
        android:id="@+id/vp_content"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1">
    </android.support.v4.view.ViewPager>

    <android.support.design.widget.TabLayout
        android:id="@+id/tl_tab"
        android:layout_width="match_parent"
        android:layout_height="@dimen/dp_72"
        android:background="@color/white">
    </android.support.design.widget.TabLayout>

</LinearLayout>

2.条目的布局：item_01_bottom.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="wrap_content"
              android:layout_height="wrap_content"
              android:layout_margin="5dp"
              android:gravity="center"
              android:orientation="vertical">

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/selector_menu_home"/>

    <TextView
        android:id="@+id/tv_menu_item"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Item"
        android:textColor="@color/selector_blue"/>

</LinearLayout>

3.Activity

public class V01_BottomActivity extends AppCompatActivity {

    private TabLayout mTabTl;
    private ViewPager mContentVp;

    private List<String> tabIndicators;
    private List<Fragment> tabFragments;
    private FragmentPagerAdapter contentAdapter;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.a01_bottom);

        mTabTl = findViewById(R.id.tl_tab);
        mContentVp = findViewById(R.id.vp_content);

        initContent();
        initTab();
    }

    private void initTab() {
        mTabTl.setTabMode(TabLayout.MODE_FIXED);
        //去除下面线
        mTabTl.setSelectedTabIndicatorHeight(0);
        ViewCompat.setElevation(mTabTl, 10);
        mTabTl.setupWithViewPager(mContentVp);

        for (int i = 0; i < tabIndicators.size(); i++) {
            //获取Tab对应条目
            TabLayout.Tab itemTab = mTabTl.getTabAt(i);
            if (itemTab != null) {
                //自定义布局加到对应条目上
                itemTab.setCustomView(R.layout.item_tab_layout_custom);
                TextView itemTv = itemTab.getCustomView().findViewById(R.id.tv_menu_item);
                itemTv.setText(tabIndicators.get(i));
            }
        }
    }

    private void initContent() {
        tabIndicators = DataUtils.getRandomName(5, true);

        tabFragments = new ArrayList<>();
        for (String s : tabIndicators) {
            tabFragments.add(V01_ContentV4Fragment.newInstance(s));
        }
        //创建适配器对象
        contentAdapter = new FragmentPagerAdapter(getSupportFragmentManager()) {
            @Override
            public Fragment getItem(int position) {
                return tabFragments.get(position);
            }

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

            @Override
            public CharSequence getPageTitle(int position) {
                return tabIndicators.get(position);
            }
        };
        mContentVp.setAdapter(contentAdapter);
    }

}

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