package com.qy.glide;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageView;
import android.widget.RadioGroup;
import com.bumptech.glide.Glide;
import com.qy.glide.fragment.Frag01;
import com.qy.glide.fragment.Frag02;
import com.qy.glide.fragment.Frag03;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity {
private ViewPager pager;
private RadioGroup radioGroup;
private ArrayList<Fragment> list;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
pager = findViewById(R.id.vp);
radioGroup = findViewById(R.id.radioG);
//页面数据
list = new ArrayList<>();
list.add(new Frag01());
list.add(new Frag02());
list.add(new Frag03());
//view pager 适配器
pager.setAdapter(new FragmentPagerAdapter(getSupportFragmentManager()) {
@Override
public Fragment getItem(int i) {
return list.get(i);
}
@Override
public int getCount() {
return list.size();
}
});
///滑动的时候切换按钮选中状态
pager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageScrolled(int i, float v, int i1) {
}
@Override
public void onPageSelected(int i) {
radioGroup.check(radioGroup.getChildAt(i).getId());
}
@Override
public void onPageScrollStateChanged(int i) {
}
});
//点击按钮切换
radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
switch (checkedId) {
case R.id.r1:
pager.setCurrentItem(0);
break;
case R.id.r2:
pager.setCurrentItem(1);
break;
case R.id.r3:
pager.setCurrentItem(2);
break;
}
}
});
}
}