TabLayout + ViewPager + Fragment 实现动态框架

转载自：https://blog.csdn.net/qq_16666847/article/details/53291941

我只设置了两个fragment显示，简单明了。

一. 导入依赖

compile 'com.android.support:appcompat-v7:24.2.0'
compile 'com.android.support:design:24.2.0'

二. xml布局

activity.xml

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

            android:id="@+id/tabLayout"
        android:layout_width="match_parent"
        android:layout_height="50dp" />

            android:id="@+id/viewPager"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

fragment.xml

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

            android:text="fragment1"
        android:background="#c1c1c1"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        />

三. fragment

两个Fragment 格式一样，这里我就放一个吧

package com.jmg.viewpagerfragment;

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

public class Fragment1 extends Fragment {

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment_layout1, container, false);
    }
}

四. 设置fragment工厂

package com.jmg.viewpagerfragment;

import android.support.v4.app.Fragment;

public class FragmentFactory {
    public static Fragment getFragment(int position) {
        Fragment fragment = null;
        switch (position) {
            case 0:
                fragment = new Fragment1();
                break;
            case 1:
                fragment = new Fragment2();
                break;
        }
        return fragment;
    }
}

五. MainActivity.java实现

package com.jmg.viewpagerfragment;

import android.support.design.widget.TabLayout;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;

public class MainActivity extends AppCompatActivity {

    TabLayout tab;
    ViewPager viewpager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        tab = (TabLayout) findViewById(R.id.tabLayout);
        viewpager = (ViewPager) findViewById(R.id.viewPager);

        viewpager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tab));
        tab.setupWithViewPager(viewpager);    //tab和viewPager绑定
        setAdapter();
    }
    private void setAdapter() {
        viewpager.setAdapter(new FragmentPagerAdapter(getSupportFragmentManager()) {
            @Override
            public Fragment getItem(int position) {
                return FragmentFactory.getFragment(position);
            }

            @Override
            public int getCount() {
                return 2;        //tab的个数
            }

            @Override
            public CharSequence getPageTitle(int position) {
                String[] str = new String[]{"首页", "应用"};    //tab显示的文字，数量要相同
                return str[position];
            }
        });
    }
}

每天进步一点点！