ViewPage+Fragment实现区域顶部tab滑动切换(烟台杰瑞教育Android(2)

烟台杰瑞教育科技有限公司(Android开发培训部) 版权所有

3、PageFragmentAdapter适配器

public class PageFragmentAdapter extends FragmentPagerAdapter{ private List fragmentList; private FragmentManager fm;

public PageFragmentAdapter(FragmentManager fm,List fragmentList){ super(fm);

this.fragmentList=fragmentList; this.fm=fm; }

@Override

public Fragment getItem(int idx) {

return fragmentList.get(idx%fragmentList.size()); }

@Override

public int getCount() {

return fragmentList.size(); }

@Override

public int getItemPosition(Object object) {

return POSITION_NONE; //没有找到child要求重新加载 } }

4、NewsFragment组件：

public class NewsFragment extends Fragment { private String weburl; private String channelName; @Override

public void onAttach(Activity activity) { super.onAttach(activity); }

private View view; @Override

public View onCreateView(LayoutInflater inflater, ViewGroup container,

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烟台杰瑞教育科技有限公司(Android开发培训部) 版权所有

Bundle savedInstanceState) {

if(view==null){//优化View减少View的创建次数

//该部分可通过xml文件设计Fragment界面，再通过LayoutInflater转换为View组件

//这里通过代码为fragment添加一个TextView TextView tvTitle=new TextView(getActivity()); tvTitle.setText(channelName); tvTitle.setTextSize(16);

tvTitle.setGravity(Gravity.CENTER); tvTitle.setLayoutParams(new

LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.MATCH_PARENT)); view=tvTitle; }

ViewGroup parent=(ViewGroup)view.getParent();

if(parent!=null){//如果View已经添加到容器中，要进行删除，负责会报错 parent.removeView(view); }

return view; }

@Override

public void setArguments(Bundle bundle) {//接收传入的数据 weburl=bundle.getString(\ channelName=bundle.getString(\ } }

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