ViewPager简单介绍(三) ViewPager+Fragment+TabLayout

前两篇文章中介绍了TabLayout和ViewPgaer+Fragment的使用,这篇文章将三者结合起来,做成一个比较常见的布局,如图:


如果对着这两者有什么不清楚的,可以看看这两篇,都是一些简单的使用。

TabLayout的使用

ViewPager+Fragment的简单使用

废话不多说,直接上代码。

要使用TabLayout,必须先在app的build.gradle中添加:

compile 'com.android.support:design:23.1.1'

在主布局中添加TabLayout和ViewPager

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:orientation="vertical"
    xmlns:android="http://schemas.android.com/apk/res/android">
    <android.support.design.widget.TabLayout
        android:id="@+id/tab"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        app:tabIndicatorColor="@color/colorPrimaryDark"
        app:tabSelectedTextColor="@color/colorPrimary"
        app:tabTextColor="@color/colorAccent" />
    <android.support.v4.view.ViewPager
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/vp">
    </android.support.v4.view.ViewPager>
</LinearLayout>

创建两个Fragement类

fragment1.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/colorAccent">
    <TextView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="fragment1"
        />
</LinearLayout>

fragment2.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/colorPrimary">
    <TextView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="fragment2"
        />

</LinearLayout>

Fragment1.class

public class Fragment1 extends Fragment{
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        View view= inflater.inflate(R.layout.fragment1, container, false);
        return view;
    }
}

Fragment2.class

public class Fragment1 extends Fragment{
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        View view= inflater.inflate(R.layout.fragment2, container, false);
        return view;
    }
}

创建ViewPager的适配器

FragAdapter.calss

public class FragAdapter extends FragmentPagerAdapter {
    private List<Fragment> fragmentList;
    private List<String> title;
    public FragAdapter(FragmentManager fm,List<Fragment> fragments,List<String> titles) {
        super(fm);
        fragmentList = fragments;
        title = titles;
    }

    @Override
    public Fragment getItem(int position) {
        return fragmentList.get(position);
    }

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

其中getPageTitle方法是获取标题的。


MainActivity中

public class MainActivity extends AppCompatActivity {
    private TabLayout mTabLayout;
    //标题列表
    ArrayList<String> titleList= new ArrayList<String>();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //构造适配器
        List<Fragment> fragments=new ArrayList<Fragment>();
        fragments.add(new Fragment1());
        fragments.add(new Fragment2());
        titleList.add("武侠");
        titleList.add("科幻");
        FragAdapter adapter = new FragAdapter(getSupportFragmentManager(), fragments,titleList);

        //设定适配器
        ViewPager vp = (ViewPager)findViewById(R.id.vp);
        vp.setAdapter(adapter);
        mTabLayout= (TabLayout) findViewById(R.id.tab);
        mTabLayout.setupWithViewPager(vp);
    }
}

到此,最简单的使用方法就结束了。当然,TabLayout的样式属性有很多,大家可以试着修改一下,做出自己想要的标题。还有就是TabLayout的属性中没有修改下划线宽度的方法,需要我们自己去写代码修改。这个我在后面的文章中会补充的。

最后附上遇到的一个小问题:

ClassNotFoundException: Didn't find class "android.support.v7.internal.widget.TintManager

就是这句代码:indiactor.setupWithViewPager(vpnewInfo);
在给TabLayout关联ViewPager的时候报错,

在引入design包的时候,版本要和appcompat版本一致。

compile 'com.android.support:design:25.0.0'
compile 'com.android.support:appcompat-v7:25.0.0'

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转载自blog.csdn.net/hua93/article/details/79387706