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  • 滑动viewpage

    Adapter:

    package com.example.fashionyuan.Adatader;

    import android.support.v4.app.Fragment;
    import android.support.v4.app.FragmentManager;
    import android.support.v4.app.FragmentPagerAdapter;

    import java.util.ArrayList;

    /**
    * Created by 梁Sir on 2017/9/26.
    */

    public class Adatader extends FragmentPagerAdapter{
    private ArrayList<Fragment>list;

    public Adatader(FragmentManager fm, ArrayList<Fragment> list) {
    super(fm);
    this.list = list;
    }

    public Adatader(FragmentManager fm) {
    super(fm);
    }

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

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

    mian:

    
    
    package com.example.fashionyuan.main;

    import android.os.Bundle;
    import android.support.v4.app.Fragment;
    import android.support.v4.app.FragmentManager;
    import android.support.v4.view.ViewPager;
    import android.support.v7.app.AppCompatActivity;
    import android.widget.RadioButton;
    import android.widget.RadioGroup;

    import com.example.fashionyuan.Adatader.Adatader;
    import com.example.fashionyuan.Fragment.FragmentA;
    import com.example.fashionyuan.Fragment.FragmentB;
    import com.example.fashionyuan.Fragment.FragmentC;
    import com.example.fashionyuan.Fragment.FragmentD;
    import com.example.fashionyuan.Fragment.FragmentE;
    import com.example.fashionyuan.R;

    import java.util.ArrayList;

    public class MainActivity extends AppCompatActivity implements RadioGroup.OnCheckedChangeListener, ViewPager.OnPageChangeListener {
    private ArrayList<Fragment> list;
    private FragmentManager fm;
    private ViewPager vp;
    private RadioButton[] radioButtons;
    private RadioGroup rg;

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

    private void initView() {
    vp = (ViewPager) findViewById(R.id.vp);
    rg = (RadioGroup) findViewById(R.id.rg);
    radioButtons =new RadioButton[rg.getChildCount()];
    for (int i = 0; i <radioButtons.length; i++) {
    radioButtons[i] = (RadioButton) rg.getChildAt(i);
    }
    FragmentA fragmentA=new FragmentA();
    FragmentB fragmentB=new FragmentB();
    FragmentC fragmentC=new FragmentC();
    FragmentD fragmentD=new FragmentD();
    FragmentE fragmentE=new FragmentE();
    list = new ArrayList<>();
    list.add(fragmentA);
    list.add(fragmentB);
    list.add(fragmentC);
    list.add(fragmentD);
    list.add(fragmentE);
    fm = getSupportFragmentManager();
    Adatader adatader = new Adatader(fm,list);
    vp.setAdapter(adatader);
    radioButtons[0].setChecked(true);
    rg.setOnCheckedChangeListener(this);
    vp.setOnPageChangeListener(this);


    }

    @Override
    public void onCheckedChanged(RadioGroup radioGroup, int i) {
    for (int j = 0; j <radioButtons.length; j++) {
    if (radioButtons[j].getId()==i){
    vp.setCurrentItem(j);

    }
    }
    }

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

    }

    @Override
    public void onPageSelected(int position) {
    radioButtons[position].setChecked(true);

    }

    @Override
    public void onPageScrollStateChanged(int state) {

    }
    }
    
    
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  • 原文地址:https://www.cnblogs.com/98k98k/p/7822860.html
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