利用viewPager实现底部导航，各个layout的对应方法如何同时实现

[L_MoonNight]

发现用viewPager只是实现了页面的显示，如何同时实现页面的方法。页面的方法已经写完，就是如何实现导航？本人菜鸟一枚，都是现学现卖
viewPager的导航方法和viewPager的适配器代码如下

public class Bottom_Guide extends Activity {  
    private ViewPager viewPager;      
    private RadioGroup radioGroup;  
    private RadioButton tab1;  
    private RadioButton tab2;  
    private RadioButton tab3;  
      
    private List<View> viewList;  
  
    @Override  
    protected void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.bottom_guide);  
  
        viewPager = (ViewPager) findViewById(R.id.viewpager);
        radioGroup = (RadioGroup) findViewById(R.id.radiogroup);
        tab1 = (RadioButton) findViewById(R.id.tab1);
        tab2 = (RadioButton) findViewById(R.id.tab2);
        tab3 = (RadioButton) findViewById(R.id.tab3);
        
        initViewPager();  
        radioGroup.setOnCheckedChangeListener(new OnCheckedChangeListener() {  
  
            public void onCheckedChanged(RadioGroup group, int checkedId) {  
                switch (checkedId) {  
                case R.id.tab1:  
                    viewPager.setCurrentItem(0);  
                    break;  
                case R.id.tab2:  
                    viewPager.setCurrentItem(1);  
                    break;  
                case R.id.tab3:  
                    viewPager.setCurrentItem(2);  
                    break;  
                }  
            }  
        });  
    }  
  
    private void initViewPager() {  
        viewList = new ArrayList<View>();  
        viewList.add(LayoutInflater.from(this).inflate(R.layout.act_map,  
                null));  
        viewList.add(LayoutInflater.from(this).inflate(R.layout.act_search,  
                null));  
        viewList.add(LayoutInflater.from(this).inflate(R.layout.act_mine,  
                null));  
        viewPager.setAdapter(new MyViewPagerAdapter());  
        viewPager.setOnPageChangeListener(new OnPageChangeListener() {  
  
            public void onPageSelected(int arg0) {  
                switch (arg0) {  
                case 0:  
                    tab1.setChecked(true);  
                    tab2.setChecked(false);  
                    tab3.setChecked(false);  
                    break;  
                case 1:  
                    tab1.setChecked(false);  
                    tab2.setChecked(true);  
                    tab3.setChecked(false);  
                    break;  
                case 2:  
                    tab1.setChecked(false);  
                    tab2.setChecked(false);  
                    tab3.setChecked(true);  
                    break;  
                }  
            }  
  
            public void onPageScrolled(int arg0, float arg1, int arg2) {  
            }  
  
            public void onPageScrollStateChanged(int arg0) {  
            }  
        });  
    }  
  
    private class MyViewPagerAdapter extends PagerAdapter {  
  
        @Override  
        public int getCount() {  
            return viewList.size();  
        }  
  
        @Override  
        public boolean isViewFromObject(View arg0, Object arg1) {  
            return arg0 == arg1;  
        }  
  
        @Override  
        public void destroyItem(ViewGroup container, int position, Object object) {  
            container.removeView(viewList.get(position));  
        }  
  
        @Override  
        public Object instantiateItem(ViewGroup container, int position) {  
            View view = viewList.get(position);  
            container.addView(view);   
            return view;  
        }  
  
    }  
}  

[zzzhehe]

public void onPageSelected(int id) { view_pager.setCurrentItem(id); }

[L_MoonNight]

引用 1 楼 qq_16400583 的回复:

public void onPageSelected(int id) { view_pager.setCurrentItem(id); }

大佬，我的方法就是在onPageSelected中判断Radiobutton的选择状态，再由状态判断执行setCurrentItem。这种方法不是一样吗？

[moonFY]

楼上的方法

[zzzhehe]

setChecked确定会调用这个方法setOnCheckedChangeListener