Android导航中Fragment里实现ViewPager滑动和RadioButton单击事件
一、首先写好XML导航页布局，没有布局，怎么看效果，俗话说的好：有图有真相！
1、导航页布局，代码中RadioButton中有2自定义选择器，点击换图和点击文字变色
（1）
1、绑定ViewPager中的4个碎片布局，建议新建一个Fragment包，其他真心不想多说，自己看着办吧。。。。。。
2、绑定导航中第一个Fragment---吃，里面的逻辑需要说说，直接上代码吧！（自己导包，有V4的导V4）
public class EatFragment extends Fragment {
private ViewPager vp;
private List list;
private EatPagerAadapter adapter;
private RadioGroup rg;
private RadioButton rb1, rb2, rb3, rb4;
private Context context;
Fragment honePage, appraisal, knowledge, cate;
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
context = activity;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_eat, null);
initView(view);
list = new ArrayList();
list.add(new EatHomePageFragment());
list.add(new EatAppraisalFragment());
list.add(new EatKnowledgeFragment());
list.add(new EatCateFragment());
adapter = new EatPagerAadapter(getChildFragmentManager(), list,
getActivity());
vp.setAdapter(adapter);
addListener();
return view;
}
private void addListener() {
vp.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageSelected(int arg0) {
Log.e("onPageSelected", "----" + arg0);
switch (arg0) {
case 0:
rb1.setChecked(true);
break;
case 1:
rb2.setChecked(true);
break;
case 2:
rb3.setChecked(true);
break;
case 3:
rb4.setChecked(true);
break;
}
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
@Override
public void onPageScrollStateChanged(int arg0) {
}
});
rb1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
vp.setCurrentItem(0);
}
});
rb2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
vp.setCurrentItem(1);
}
});
rb3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
vp.setCurrentItem(2);
}
});
rb4.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
vp.setCurrentItem(3);
}
});
}
private void initView(View view) {
vp = (ViewPager) view.findViewById(R.id.pager);
rg = (RadioGroup) view.findViewById(R.id.fragment_eat_rg);
rb1 = (RadioButton) view.findViewById(R.id.fragment_eat_home_page_rbtn);
rb2 = (RadioButton) view.findViewById(R.id.fragment_eat_appraisal_rbtn);
rb3 = (RadioButton) view.findViewById(R.id.fragment_eat_knowledge_rbtn);
rb4 = (RadioButton) view.findViewById(R.id.fragment_eat_cate_rbtn);
}
}
3、是不是还有报错，适配器写了么？（建议新建个“adapter“包）包还是自己导，有V4的导V4
public class EatPagerAadapter extends FragmentPagerAdapter{
private Context context;
private List list;
public EatPagerAadapter(FragmentManager fm) {
super(fm);
}
public EatPagerAadapter(FragmentManager fm,List list,Context context){
super(fm);
this.list=list;
this.context=context;
}
@Override
public Fragment getItem(int arg0) {
return list==null?null:list.get(arg0);
}
@Override
public int getCount() {
return list==null?0:list.size();}
}
4、所有准备工作就绪，最后在导航页主类中加个单击事件就OK了
public class MainActivity extends FragmentActivity implements OnClickListener{
private RadioButton mEatBtn,mFoodBtn,mShopBtn,mMyBtn;//后面三个按钮只做声明、初始化和绑定监听，单击事件参考第一个按钮
Fragment eat,food,shop,my;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
addListener();
eat=new EatFragment();
getSupportFragmentManager().beginTransaction().replace(R.id.main_llayout,eat).commit();
mEatBtn.setChecked(true);
}
@Override
protected void onResume() {
super.onResume();
}
private void addListener() {
mEatBtn.setOnClickListener(this);
mFoodBtn.setOnClickListener(this);
mShopBtn.setOnClickListener(this);
mMyBtn.setOnClickListener(this);
}
private void initView() {
mEatBtn=(RadioButton) findViewById(R.id.activity_main_eat_rbtn);
mFoodBtn=(RadioButton) findViewById(R.id.activity_main_food_rbtn);
mShopBtn=(RadioButton) findViewById(R.id.activity_main_shop_rbtn);
mMyBtn=(RadioButton) findViewById(R.id.activity_main_my_rbtn);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.activity_main_eat_rbtn:
eat=new EatFragment();
getSupportFragmentManager().beginTransaction().replace(R.id.main_llayout,eat).commit();
break;
case R.id.activity_main_food_rbtn:
break;
case R.id.activity_main_shop_rbtn:
break;
case R.id.activity_main_my_rbtn:
break;
}
}
}
试一试效果吧