跑偏了的三周考—— tabLayout + viewPger + pullToRefresh

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"

xmlns:app="http://schemas.android.com/apk/res-auto"

android:orientation="vertical"><android.support.design.widget.TabLayoutandroid:id="@+id/tab"android:layout_width="match_parent"android:layout_height="wrap_content"

app:tabMode="scrollable"app:tabTextColor="@color/colorPrimary"
app:tabSelectedTextColor="@color/colorAccent"
app:tabTextAppearance="@android:style/TextAppearance.Large"
app:tabIndicatorHeight="1dp"

>
</android.support.design.widget.TabLayout>

<android.support.v4.view.ViewPager
android:id="@+id/vp"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1">
</android.support.v4.view.ViewPager>

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.v4.view.ViewPagerandroid:id="@+id/pull_vp"
android:layout_width="match_parent"
android:layout_height="100dp"></android.support.v4.view.ViewPager>
<com.handmark.pulltorefresh.library.PullToRefreshListView
android:id="@+id/pull1"
android:l
4000
ayout_width="match_parent"
android:layout_height="match_parent">
</com.handmark.pulltorefresh.library.PullToRefreshListView>

</LinearLayout>


<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">

<ImageView
android:id="@+id/item_img"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_marginLeft="20dp"/>
<TextViewandroid:id="@+id/item_tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:layout_marginTop="15dp"/>
</LinearLayout>


public class F1 extends Fragment {
//首页面使用tabLayout+viewPager实现。其它导航页面，内容自定义。
private TabLayout f1_tab;
private ViewPager f1_vp;
private List<Fragment> fal;
private List<String> list = new ArrayList<String>();

@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.f1, container, false);
f1_tab = view.findViewById(R.id.tab);
f1_vp = view.findViewById(R.id.vp);
return view;
}

@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
initData();

MyFragPageAdapter adapter = new MyFragPageAdapter(getChildFragmentManager());
f1_vp.setAdapter(adapter);

// setupWithViewPager必须在ViewPager.setAdapter()之后调用
// 具体原因查看源码
f1_tab.setupWithViewPager(f1_vp);

}

private void initData() {
fal = new ArrayList<>();
F01 f01 = new F01();
F01 f02 = new F01();
F01 f03 = new F01();
F01 f04 = new F01();
F01 f05 = new F01();
F01 f06 = new F01();
fal.add(f01);
fal.add(f02);
fal.add(f03);
fal.add(f04);
fal.add(f05);
fal.add(f06);
}

class MyFragPageAdapter extends FragmentPagerAdapter {
private int pages = 6;
private Context context;
private String[] datas = {"花边", "热点", "广告", "热门","推荐","其他"};

//构造必须一个FragmentManager管理器,注意也是v4里的
public MyFragPageAdapter(FragmentManager fm) {
super(fm);
this.context = context;
}

@Override
public int getCount() {
return pages;
}

@Override
public Fragment getItem(int position) {

return fal.get(position);
}

@Override
public CharSequence getPageTitle(int position) {
return datas[position];
}
}
}

public class F01 extends Fragment {

List<JavaBean.DataBean> mylist = new ArrayList<>();
private ViewPager f01_vp;
private PullToRefreshListView f01_pull;
int currentItem; //当前页
//int lastPosition = 0; //记录上次点的位置
//存放图片的集合
String [] imgs = {
"http://pic8.nipic.com/20100701/5290458_114840036316_2.jpg",
"http://pic2.nipic.com/20090424/1468853_230119053_2.jpg",
"http://img3.3lian.com/2013/s1/20/d/57.jpg",
"http://pic39.nipic.com/20140226/18071023_164300608000_2.jpg",
"http://a0.att.hudong.com/15/08/300218769736132194086202411_950.jpg"
};
private List<ImageView> imagesList;
private ScheduledExecutorService scheduledExecutorService;

private PullToRefreshListView f02_pull;

String baseUrl = "http://www.93.gov.cn/93app/data.do?channelId=0&startNum=";
//private ArrayAdapter<String> arrayAdapter;
private int page = 0;

private com.nostra13.universalimageloader.core.ImageLoader imageLoaderInstance;
private ListView lv;

//利用handler + 线程 实现无限轮播
Handler handler = new Handler(){
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
//设置当前页面
f01_vp.setCurrentItem(currentItem);
}
};
private MyItemAdapter myadapter;

@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.f01, container, false);
f01_pull = view.findViewById(R.id.pull1);
f01_vp = view.findViewById(R.id.pull_vp);
return view;
}

@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
//页面中最上方实现viewPager的无限自动轮播
initData();
MyAdapter adapter = new MyAdapter();
f01_vp.setAdapter(adapter);
f01_vp.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
//当VP滑动 设置当前页
currentItem = position;
}
@Override
public void onPageSelected(int position) {
}
@Override
public void onPageScrollStateChanged(int state) {
}
});
ListView lv = f01_pull.getRefreshableView();
imageLoaderInstance = com.nostra13.universalimageloader.core.ImageLoader.getInstance();
// arrayAdapter = new ArrayAdapter<>(getActivity(), android.R.layout.simple_list_item_1, list);
myadapter = new MyItemAdapter();
lv.setAdapter(myadapter);
f01_pull.setMode(PullToRefreshBase.Mode.PULL_FROM_START);
f01_pull.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener2<ListView>() {
@Override
public void onPullDownToRefresh(PullToRefreshBase<ListView> pullToRefreshBase) {
mylist.clear();
getNetData(0);
}

@Override
public void onPullUpToRefresh(PullToRefreshBase<ListView> pullToRefreshBase) {
getNetData(page++);
}
});
getNetData(0);//请求listview接口数据
}

private void getNetData(int page) {
new MAsyncTask().execute(baseUrl +page);

}

private void initData() {
imagesList = new ArrayList<>();
for (int i = 0; i<imgs.length; i++){
ImageView imageView = new ImageView(getActivity());
imageView.setMaxWidth(100);
//调用显示图片
ImageLoader instance = ImageLoader.getInstance();
instance.displayImage(imgs[i], imageView, ImageLoaderUtils_circle.getDisplayImageOption());
imagesList.add(imageView);
}

}
class MyItemAdapter extends BaseAdapter{
@Override
public int getCount() {
Log.e("wzq", "getCount:" + mylist.size());
return mylist.size();
}

@Override
public Object getItem(int i) {
return mylist.get(i);
}

@Override
public long getItemId(int i) {
return i;
}

@Override
public View getView(int i, View view, ViewGroup viewGroup) {
View view1 = View.inflate(getActivity(), R.layout.item1, null);
TextView tv = view1.findViewById(R.id.item_tv);
ImageView img = view1.findViewById(R.id.item_img);
tv.setText(mylist.get(i).getSUBTITLE());
// iv.setImageBitmap("url");

//调用显示图片
ImageLoader instance = ImageLoader.getInstance();
instance.displayImage(mylist.get(i).getIMAGEURL(),img);

return view1;
}

}
private class MyAdapter extends PagerAdapter {
@Override
public int getCount() {
return imagesList.size();
}
@Override
public boolean isViewFromObject(View arg0, Object arg1) {
return arg0 == arg1;
}
@Override
public void destroyItem(ViewGroup view, int position, Object object) {
view.removeView(imagesList.get(position));
}
@Override
public Object instantiateItem(ViewGroup view, int position) {
view.addView(imagesList.get(position));
return imagesList.get(position);
}
}

@Override
public void onStart() {
super.onStart();
//利用线程池执行动画轮播
scheduledExecutorService = Executors.newSingleThreadScheduledExecutor();
scheduledExecutorService.scheduleWithFixedDelay(
new ViewPageTask(),
2,
2,
TimeUnit.SECONDS);
}
//图片轮播任务
private class ViewPageTask implements Runnable {
@Override
public void run() {
//获取当前页面
currentItem = (currentItem +1)% imgs.length;
handler.sendEmptyMessage(0);
}
}
@Override
public void onStop() {
super.onStop();
if(scheduledExecutorService != null){
scheduledExecutorService.shutdown();
scheduledExecutorService = null;
}
}

class MAsyncTask extends AsyncTask<String ,Void, String>{

@Override
protected String doInBackground(String... strings) {
return NetUtils.getNetJson(strings[0]);
}

@Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
Gson gson = new Gson();
JavaBean product = gson.fromJson(s, JavaBean.class);
List<JavaBean.DataBean> datas = product.getData();
mylist.addAll(datas);
myadapter.notifyDataSetChanged();
f01_pull.onRefreshComplete();
}
}
}