使用TabLayout、ViewPager和Fragment实现顶部菜单可滑动切换

转载请标明出处：http://blog.csdn.net/liu1252247624/article/details/51546618

效果图如下



首先，要使用控件需要添加design library，在Android Studio中添加

compile 'com.android.support:design:23.4.0'

然后是布局文件

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
tools:context="com.lg.tablayoutdemo.MainActivity">

<android.support.design.widget.TabLayout
android:id="@+id/tab_layou"
android:layout_width="match_parent"
app:tabIndicatorColor="@android:color/holo_blue_light"
app:tabTextColor="@android:color/darker_gray"
app:tabSelectedTextColor="@android:color/black"
android:layout_height="wrap_content" />

<android.support.v4.view.ViewPager
android:id="@+id/view_pager"
android:layout_below="@id/tab_layou"
android:layout_width="match_parent"
android:layout_height="match_parent" />

</RelativeLayout>

其中TabLayout中tabIndicatorColor属性为标签底部下滑线颜色，tabTextColor为标签未选中时字体颜色,tabSelectedTextColor为选中时字体颜色

自定一个FragmentPagerAdapter适配器

public class MyViewPagerAdapter extends FragmentPagerAdapter {
private List<Fragment> fragments;
private String[] titles;

public MyViewPagerAdapter(FragmentManager fm, String[] titles, List<Fragment> fragments) {
super(fm);
this.titles = titles;
this.fragments = fragments;
}

@Override
public Fragment getItem(int arg0) {
return fragments.get(arg0);
}

@Override
public CharSequence getPageTitle(int position) {
return titles[position];
}

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

Fragment代码我就不贴了，会在下面奉上源码地址

public class MainActivity extends AppCompatActivity implements TabLayout.OnTabSelectedListener {
private TabLayout tabLayout;
private ViewPager viewPager;
private MyViewPagerAdapter viewPagerAdapter;
//TabLayout标签
private String[] titles=new String[]{"ANDROID","JAVA","C#","PHP"};
private List<Fragment> fragments=new ArrayList<>();

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
init();
}

private void init(){
tabLayout=(TabLayout)findViewById(R.id.tab_layou);
viewPager=(ViewPager)findViewById(R.id.view_pager);
//设置TabLayout标签的显示方式
tabLayout.setTabMode(TabLayout.MODE_FIXED);
//循环注入标签
for (String tab:titles){
tabLayout.addTab(tabLayout.newTab().setText(tab));
}
//设置TabLayout点击事件
tabLayout.setOnTabSelectedListener(this);

fragments.add(new AndroidFragment());
fragments.add(new JavaFragment());
fragments.add(new CshapFragment());
fragments.add(new PhpFragment());
viewPagerAdapter=new MyViewPagerAdapter(getSupportFragmentManager(),titles,fragments);
viewPager.setAdapter(viewPagerAdapter);
tabLayout.setupWithViewPager(viewPager);
}

@Override
public void onTabSelected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
}

@Override
public void onTabUnselected(TabLayout.Tab tab) {

}

@Override
public void onTabReselected(TabLayout.Tab tab) {

}
}

以上是核心代码，至此功能就实现了，当然也可 以根据不同的需求进行改动

源码地址:http://download.csdn.net/detail/liu1252247624/9536588