一起Talk Android吧（第二百六十八回：Android中的ViewPager大结局）

各位看官们大家好，上一回中咱们说的是Android中ViewPager的例子,这一回中咱们继续说该例子。闲话休提，言归正转。让我们一起Talk Android吧！
看官们，我们在前面章回中介绍了ViewPager的使用方法和注意事项，下面是完整的代码，请大家参考：
主页面的代码和布局:

package com.example.talk8.blogappall;

import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;

import java.util.ArrayList;

public class NaviActivity extends AppCompatActivity {


    private ViewPager mViewPager;
    private ArrayList<Fragment> mFragments;

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

       
        mFragments = new ArrayList<>();
        mFragments.add(new ViewpageFragmentA());
        mFragments.add(new ViewpageFragmentB());

        mViewPager = (ViewPager)findViewById(R.id.id_viewpage);
        FragmentManager fragmentManager = getSupportFragmentManager();
        mViewPager.setAdapter(new FragmentPagerAdapter(fragmentManager){
            @Override
            public Fragment getItem(int i) {
                if(mFragments != null)
                    return  mFragments.get(i);
                else
                    return null;
            }
            @Override
            public int getCount() {
                return mFragments.size();
            }
        });
    }

}

<?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:id="@+id/container"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".NaviActivity">
  

    <android.support.v4.view.ViewPager
        android:id="@+id/id_viewpage"
        android:layout_width="match_parent"
        android:layout_weight="5"
        android:layout_height="0dp">
    </android.support.v4.view.ViewPager>

</LinearLayout>

两个Fragment的代码和布局：

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
/**
 * A simple {@link Fragment} subclass.
 */
public class ViewpageFragmentA extends Fragment {

    public ViewpageFragmentA() {
        // Required empty public constructor
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_viewpage, container, false);
    }

}

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

    <!-- TODO: Update blank fragment layout -->
    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="This is FragmentA of Viewpage" />

</LinearLayout>

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

/**
 * A simple {@link Fragment} subclass.
 */
public class ViewpageFragmentB extends Fragment {

    public ViewpageFragmentB() {
        // Required empty public constructor
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_viewpage_fragment_b, container, false);
    }

}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:gravity="center"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".ViewpageFragmentB">

    <!-- TODO: Update blank fragment layout -->
    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textColor="@color/colorAccent"
        android:text="This is FragmentB of Viewpage" />

</LinearLayout>

各位看官，关于Android中ViewPager的例子咱们就介绍到这里，欲知后面还有什么例子，且听下回分解！