ViewPager系列之軟件主頁面切換製做

效果圖：ViewPager製做的頁面能左右滑動，而Fragment製做的頁面卻不能左右滑動。

   

代碼：

<?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"
    android:focusable="false"
    >
<android.support.v4.view.ViewPager
    android:id="@+id/viewPager"
    android:layout_height="fill_parent"
    android:layout_width="fill_parent">
</android.support.v4.view.ViewPager>

    <RadioGroup
        android:id="@+id/titleGroup"
        android:layout_width="match_parent"
        android:layout_height="80dp"
        android:orientation="horizontal"
        android:layout_alignParentBottom="true"
        android:clickable="true"
        >

        <RadioButton
            android:id="@+id/radioHome"
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:gravity="center"
            android:text="第一個頁面"
            android:checked="true"
            android:clickable="true"
            android:button="@null"
            android:drawableTop="@drawable/radio1"
            android:textColor="@drawable/text1"
            android:drawablePadding="5dp"
            android:padding="5dp"
            />

        <RadioButton
            android:id="@+id/radioSearch"
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="wrap_content"
            android:gravity="center"
            android:layout_gravity="center"
            android:text="第二個頁面"
            android:checked="false"
            android:button="@null"
            android:drawableTop="@drawable/radio2"
            android:textColor="@drawable/text2"
            android:drawablePadding="5dp"
            android:padding="5dp"/>

        <RadioButton
            android:id="@+id/radioMore"
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:gravity="center"
            android:text="第三個頁面"
            android:checked="false"
            android:button="@null"
            android:drawableTop="@drawable/radio3"
            android:textColor="@drawable/text3"
            android:drawablePadding="5dp"
            android:padding="5dp"/>

        <RadioButton
            android:id="@+id/radioPersonal"
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="wrap_content"
            android:gravity="center"
            android:layout_gravity="center"
            android:text="第四個頁面"
            android:checked="false"
            android:button="@null"
            android:drawableTop="@drawable/radio4"
            android:textColor="@drawable/text4"
            android:drawablePadding="5dp"
            android:padding="5dp"/>
    </RadioGroup>

</RelativeLayout>

 

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_checked="true"  android:drawable="@drawable/home_selected" ></item>
    <item android:state_checked="false" android:drawable="@drawable/home"></item>
</selector>

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_checked="true"  android:color="#1E90FF"></item>
    <item android:state_checked="false" android:color="#4D4D4D"></item>
</selector>

package com.tab.tabviewpager;

import android.os.Bundle;
import android.support.v4.view.PagerAdapter;
import android.support.v7.app.AppCompatActivity;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.RadioButton;
import android.widget.RadioGroup;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {
    private ViewPager viewPager;
    private List<View> viewList;
    private PagerAdapter pagerAdapter;
    private RadioGroup radioGroup;
    private RadioButton radioHome,radioSearch,radioMore,radioPersonal;
    private int[] all={0,1,2,3};
    private List<RadioButton> radioButtons;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        viewPager= (ViewPager) findViewById(R.id.viewPager);
        View view1= LayoutInflater.from(this).inflate(R.layout.layout1,null);
        View view2=LayoutInflater.from(this).inflate(R.layout.layout2,null);
        View view3=LayoutInflater.from(this).inflate(R.layout.layout3,null);
        View view4=LayoutInflater.from(this).inflate(R.layout.layout4,null);
        viewList=new ArrayList<View>();
        viewList.add(view1);
        viewList.add(view2);
        viewList.add(view3);
        viewList.add(view4);
        pagerAdapter=new ViewPagerAdapter();
        viewPager.setAdapter(pagerAdapter);
        radioHome= (RadioButton) findViewById(R.id.radioHome);
        radioSearch= (RadioButton) findViewById(R.id.radioSearch);
        radioMore= (RadioButton) findViewById(R.id.radioMore);
        radioPersonal= (RadioButton) findViewById(R.id.radioPersonal);
        radioButtons=new ArrayList<RadioButton>();
        radioButtons.add(radioHome);
        radioButtons.add(radioSearch);
        radioButtons.add(radioMore);
        radioButtons.add(radioPersonal);
        viewPager.setOnPageChangeListener(new pageChangeListener());
        radioGroup= (RadioGroup) findViewById(R.id.titleGroup);
        radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup group, int checkedId) {
                int i=0;
                for(RadioButton button:radioButtons){
                    if(button.getId()==checkedId){
                        viewPager.setCurrentItem(i);
                        break;
                    }
                    i++;
                }
            }
        });
    }

    class ViewPagerAdapter extends  PagerAdapter{
        @Override
        public int getCount() {
            return viewList.size();
        }

        @Override
        public boolean isViewFromObject(View view, Object object) {
            return view==object;
        }

        @Override
        public Object instantiateItem(ViewGroup container, int position) {
            container.addView(viewList.get(position));
            return viewList.get(position);
        }

        @Override
        public void destroyItem(ViewGroup container, int position, Object object) {
            container.removeView(viewList.get(position));
        }
    }


    class pageChangeListener  implements ViewPager.OnPageChangeListener{

        @Override
        public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {

        }

        @Override
        public void onPageSelected(int position) {
           for(int i:all){
               if(i==position){
                   radioButtons.get(i).setChecked(true);
               }else{
                   radioButtons.get(i).setChecked(false);
               }
         }
        }

        @Override
        public void onPageScrollStateChanged(int state) {

        }
    }
}