AndroidAPP顶部导航栏Tab点击和左右滑动实现切换界面

APP市场中大多数资讯App都有导航菜单，导航菜单是一组标签的集合，在新闻APP中，每个标签标示一个类别，对应下面ViewPager控件的一个分页面。

随着版本迭代的更新，带来了许多控件，案例主要用到了TabLayout，ViewPage，RecyclerView，CardView等新控件。

效果如图：

以前的实现方法是 ：ViewPagerIndicator + Fragment + ViewPager 相结合来实现

请看博客： ViewPagerIndicator实现新闻App导航栏。

今天主要讲的是另一种实现方式：TabLayout+ Fragment + ViewPager

添加程序所需要的依赖：

compile 'com.android.support:design:23.2.1'
compile 'com.android.support:recyclerview-v7:23.1.1'
compile 'com.android.support:cardview-v7:23.2.1'

主布局

<?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"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">

<android.support.design.widget.TabLayout
android:id="@+id/tablayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#E0E0E0"
app:tabIndicatorColor="@color/ind_red"
app:tabMode="fixed"
app:tabSelectedTextColor="@color/material_orange"
app:tabTextColor="@android:color/black"
app:tabIndicatorHeight="5dp"
app:tabTextAppearance="@style/TabStyle"
/>
<android.support.v4.view.ViewPager
android:id="@+id/tab_viewpager"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="@android:color/white" />

</LinearLayout>

<?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"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">

<android.support.design.widget.TabLayout
android:id="@+id/tablayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#E0E0E0"
app:tabIndicatorColor="@color/ind_red"
app:tabMode="fixed"
app:tabSelectedTextColor="@color/material_orange"
app:tabTextColor="@android:color/black"
app:tabIndicatorHeight="5dp"
app:tabTextAppearance="@style/TabStyle"
/>
<android.support.v4.view.ViewPager
android:id="@+id/tab_viewpager"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="@android:color/white" />

</LinearLayout>

Tablayout控件包含很多属性 例如 tabIndicatorColor：菜单下方移动的横线的颜色 属性很多就不一 一介绍了，代码中有注释。

Activity.Java

public class TabLessActivity extends AppCompatActivity {

private TabLayout tabLayout = null;

private ViewPager viewPager;

private Fragment[] mFragmentArrays = new Fragment[5];

private String[] mTabTitles = new String[5];

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
supportRequestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.tab_layout);
tabLayout = (TabLayout) findViewById(R.id.tablayout);
viewPager = (ViewPager) findViewById(R.id.tab_viewpager);
initView();
}

private void initView() {
mTabTitles[0] = "推荐";
mTabTitles[1] = "热点";
mTabTitles[2] = "科技";
mTabTitles[3] = "体育";
mTabTitles[4] = "健康";
tabLayout.setTabMode(TabLayout.MODE_FIXED);
//设置tablayout距离上下左右的距离
//tab_title.setPadding(20,20,20,20);
mFragmentArrays[0] = TabFragment.newInstance();
mFragmentArrays[1] = TabFragment.newInstance();
mFragmentArrays[2] = TabFragment.newInstance();
mFragmentArrays[3] = TabFragment.newInstance();
mFragmentArrays[4] = TabFragment.newInstance();
PagerAdapter pagerAdapter = new MyViewPagerAdapter(getSupportFragmentManager());
viewPager.setAdapter(pagerAdapter);
//将ViewPager和TabLayout绑定
tabLayout.setupWithViewPager(viewPager);
}
}

Fragment.java

public class TabFragment extends Fragment {

public static Fragment newInstance() {
TabFragment fragment = new TabFragment();
return fragment;
}
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_tab, container, false);
RecyclerView recyclerView = (RecyclerView) rootView.findViewById(R.id.recycler);
LinearLayoutManager layoutManager = new LinearLayoutManager(getActivity());
layoutManager.setOrientation(LinearLayoutManager.VERTICAL);
recyclerView.setLayoutManager(layoutManager);
recyclerView.setAdapter(new RecyclerAdapter());
return rootView;
}
}

技术在更新，我们在进步,TabLayout实现tab导航效果比以前那些方法来的更加简单方便。

源码点击下载