PullToFreshScrollView
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MainActivity 主要是viewpager和listview的操作=========================================================
package wangaimin.bwie.com.example.lenovo.scrollview;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.support.v4.view.ViewPager;import android.support.v7.app.AppCompatActivity;import android.widget.ListView;import android.widget.ScrollView;import com.google.gson.Gson;import com.handmark.pulltorefresh.library.ILoadingLayout;import com.handmark.pulltorefresh.library.PullToRefreshBase;import com.handmark.pulltorefresh.library.PullToRefreshScrollView;import java.text.SimpleDateFormat;import java.util.ArrayList;import java.util.Date;import java.util.List;public class MainActivity extends AppCompatActivity { private PullToRefreshScrollView refreshScrollView; private ViewPager viewPager; private ListView listView; private List<DataDataBean.ResultsBean> list = new ArrayList<>();//记录当前展示的所有数据 private int page_num = 1; private ListViewAdapter listViewAdapter; private ILoadingLayout startLabels; private List<String> imageUrlList; private Handler handler = new Handler(){ @Override public void handleMessage(Message msg) { if (msg.what == 0){ //显示下一页....拿到当前页+1 viewPager.setCurrentItem(viewPager.getCurrentItem() +1); //再次发送消息 handler.sendEmptyMessageDelayed(0,2000); } } }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); refreshScrollView = (PullToRefreshScrollView) findViewById(R.id.refresh_scroll_view); viewPager = (ViewPager) findViewById(R.id.image_view_pager); listView = (ListView) findViewById(R.id.scroll_list_view); listView.setFocusable(false); //轮播图 lunBoTu(); //listView展示数据 //1.获取网络数据,,,展示在listView上 getDataFromNet(); //2.设置刷新模式 /*设置pullToRefreshListView的刷新模式，BOTH代表支持上拉和下拉，PULL_FROM_END代表上拉,PULL_FROM_START代表下拉 */ refreshScrollView.setMode(PullToRefreshBase.Mode.BOTH); //3.通过getLoadingLayoutProxy 方法来指定上拉和下拉时显示的状态的区别(也就是设置向下拉的时候头部里面显示的文字) //此时这里设置的是下拉刷新的时候显示的文字,所以第一个设置true表示现在是刷新,第二个设置为false startLabels = refreshScrollView.getLoadingLayoutProxy(true, false); startLabels.setPullLabel("下拉刷新"); startLabels.setRefreshingLabel("正在刷新..."); startLabels.setReleaseLabel("放开刷新"); ILoadingLayout endLabels = refreshScrollView.getLoadingLayoutProxy(false, true); endLabels.setPullLabel("上拉刷新"); endLabels.setRefreshingLabel("正在载入..."); endLabels.setReleaseLabel("放开刷新..."); /** * 监听事件 */ refreshScrollView.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener2<ScrollView>() { @Override public void onPullDownToRefresh(PullToRefreshBase<ScrollView> refreshView) { getRefreshData(); } @Override public void onPullUpToRefresh(PullToRefreshBase<ScrollView> refreshView) { page_num++; getDataFromNet(); } }); } private void getRefreshData() { NetDataUtil.getData("http://gank.io/api/data/Android/10/1", MainActivity.this, new JsonCallBack() { @Override public void getJsonString(String json) { //解析 Gson gson = new Gson(); DataDataBean dataDataBean = gson.fromJson(json, DataDataBean.class); //先清空一下数据 list.clear(); //添加到集合的最前边,,,,(0,,,,) list.addAll(0,dataDataBean.getResults()); //设置适配器 setAdapter(); //设置适配器之后停止刷新的操作 refreshScrollView.onRefreshComplete(); //可以设置刷新的时间.... startLabels.setLastUpdatedLabel("上次更新时间:"+new SimpleDateFormat("HH:mm").format(new Date(System.currentTimeMillis())));//last最近的,最后一次update修改/更新 } }); } private void setAdapter() { if (listViewAdapter == null){ listViewAdapter = new ListViewAdapter(MainActivity.this,list); listView.setAdapter(listViewAdapter); }else { listViewAdapter.notifyDataSetChanged(); } } private void getDataFromNet() { //第一个参数是接口,第二个上下文,第三个回调json数据 NetDataUtil.getData("http://gank.io/api/data/Android/10/"+page_num,MainActivity.this, new JsonCallBack() { @Override public void getJsonString(String json) { //解析 Gson gson = new Gson(); DataDataBean dataDataBean = gson.fromJson(json, DataDataBean.class); //往后面添加... list.addAll(dataDataBean.getResults()); //设置适配器 setAdapter(); //停止刷新 refreshScrollView.onRefreshComplete(); } }); } private void lunBoTu() { NetDataUtil.getData("http://v3.wufazhuce.com:8000/api/reading/index/?version=3.5.0&platform=android", MainActivity.this, new JsonCallBack() { @Override public void getJsonString(String json) { //这个结合记录轮播图的所有地址 imageUrlList = new ArrayList<String>(); //解析数据 Gson gson = new Gson(); LunBoBean lunBoBean = gson.fromJson(json, LunBoBean.class); List<LunBoBean.DataBean.EssayBean> essay = lunBoBean.getData().getEssay(); for (LunBoBean.DataBean.EssayBean essayBean: essay) { //essayBean.getAuthor().get(0).getWeb_url() imageUrlList.add(essayBean.getAuthor().get(0).getWeb_url()); } //此时应该根据图片的路径,加载图片,设置适配器 ViewPagerAdapter viewPagerAdapter = new ViewPagerAdapter(MainActivity.this, imageUrlList); viewPager.setAdapter(viewPagerAdapter); //1.手动可以无限滑动....maxValue....把当前开始展示的位置放在足够大的某个位置 viewPager.setCurrentItem(imageUrlList.size()*100000); //2.自动轮播 handler.sendEmptyMessageDelayed(0,2000); } }); }}=========
ViewPagerAdapter viewpager的Adapter===================================================================
package wangaimin.bwie.com.example.lenovo.scrollview;import android.content.Context;import android.support.v4.view.PagerAdapter;import android.view.View;import android.view.ViewGroup;import android.widget.ImageView;import com.nostra13.universalimageloader.core.ImageLoader;import java.util.List;/** * @author Dash * @date 2017/10/19 * @description: */public class ViewPagerAdapter extends PagerAdapter { Context context; List<String> imageUrlList; public ViewPagerAdapter(Context context, List<String> imageUrlList) { this.context = context; this.imageUrlList = imageUrlList; } @Override public int getCount() { return Integer.MAX_VALUE; } @Override public boolean isViewFromObject(View view, Object object) { return view == object; } @Override public Object instantiateItem(ViewGroup container, int position) { //1.创建imageView...添加到容器中 ImageView imageView = new ImageView(context); imageView.setScaleType(ImageView.ScaleType.FIT_XY); //展示图片 ImageLoader.getInstance().displayImage(imageUrlList.get(position%imageUrlList.size()),imageView, ImageLoaderUtil.getDefaultOption()); //添加 container.addView(imageView); //2.返回当前展示的imageView控件 return imageView; } @Override public void destroyItem(ViewGroup container, int position, Object object) { container.removeView((View) object); }}==========
ListViewAdapter listview的适配器和多条目加载=======================================================package wangaimin.bwie.com.example.lenovo.scrollview;import android.content.Context;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.ImageView;import android.widget.TextView;import com.nostra13.universalimageloader.core.ImageLoader;import java.util.List;/** * @author Dash * @date 2017/10/18 * @description: * * 多条目加载 */public class ListViewAdapter extends BaseAdapter { Context context; List<DataDataBean.ResultsBean> list; private int TEXT_ONLY = 0; private int IMAGE_TEXT = 1; public ListViewAdapter(Context context, List<DataDataBean.ResultsBean> list) { this.context = context; this.list = list; } @Override public int getCount() { return list.size(); } @Override public Object getItem(int i) { return list.get(i); } @Override public long getItemId(int i) { return i; } @Override public int getViewTypeCount() {//返回有多少种条目的视图 return 2; } @Override public int getItemViewType(int position) {//返回当前条目视图的类型 //根据当前位置是否有图片决定,该条目的类型是什么 if (list.get(position).getImages() != null){ return IMAGE_TEXT; } return TEXT_ONLY; } @Override public View getView(int i, View view, ViewGroup viewGroup) { if (getItemViewType(i) == TEXT_ONLY){ TextHolder holder; if (view == null){ view = View.inflate(context, R.layout.item_text_layout,null); holder = new TextHolder(); holder.textView = view.findViewById(R.id.text_title); view.setTag(holder); }else { holder = (TextHolder) view.getTag(); } holder.textView.setText(list.get(i).getDesc()); }else if (getItemViewType(i) == IMAGE_TEXT){ ImageHolder holder; if (view == null){ view = View.inflate(context, R.layout.item_image_layout,null); holder = new ImageHolder(); holder.textView = view.findViewById(R.id.text_title); holder.imageView = view.findViewById(R.id.image_view); view.setTag(holder); }else { holder = (ImageHolder) view.getTag(); } holder.textView.setText(list.get(i).getDesc()); //设置图片的显示 ImageLoader.getInstance().displayImage(list.get(i).getImages().get(0),holder.imageView, ImageLoaderUtil.getRoundOption()); } return view; } private class TextHolder{ TextView textView; } private class ImageHolder{ TextView textView; ImageView imageView; }}==========
MyListView 在布局中用 记得改项目名========================================
package wangaimin.bwie.com.example.lenovo.scrollview;import android.content.Context;import android.util.AttributeSet;import android.widget.ListView;/** * @author Dash * @date 2017/10/19 * @description: * * 参考博客地址:http://blog.csdn.net/zhaokaiqiang1992/article/details/38585547 */public class MyListView extends ListView { public MyListView(Context context) { super(context); } public MyListView(Context context, AttributeSet attrs) { super(context, attrs); } public MyListView(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); } /** * 重新计算高度 * @param widthMeasureSpec * @param heightMeasureSpec */ @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST); super.onMeasure(widthMeasureSpec, expandSpec); } /* @Override protected void onLayout(boolean changed, int l, int t, int r, int b) { super.onLayout(changed, l, t, r, b); } @Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); }*/}==================activity_main============================================
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context="wangaimin.bwie.com.example.lenovo.scrollview.MainActivity"> <com.handmark.pulltorefresh.library.PullToRefreshScrollView xmlns:ptr="http://schemas.android.com/apk/res-auto" android:id="@+id/refresh_scroll_view" android:layout_width="match_parent" android:layout_height="match_parent" ptr:ptrAnimationStyle="flip" ptr:ptrDrawable="@drawable/default_ptr_flip" ptr:ptrHeaderBackground="#383838" ptr:ptrHeaderTextColor="#FFFFFF"> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <android.support.v4.view.ViewPager android:id="@+id/image_view_pager" android:layout_width="match_parent" android:layout_height="200dp"> </android.support.v4.view.ViewPager> <wangaimin.bwie.com.example.lenovo.scrollview.MyListView android:id="@+id/scroll_list_view" android:layout_width="match_parent" android:layout_height="match_parent"> </wangaimin.bwie.com.example.lenovo.scrollview.MyListView> </LinearLayout> </com.handmark.pulltorefresh.library.PullToRefreshScrollView></LinearLayout>============item_image_layout======================================
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="horizontal" android:padding="10dp" android:layout_width="match_parent" android:layout_height="match_parent"> <TextView android:id="@+id/text_title" android:layout_weight="1" android:layout_width="0dp" android:layout_height="wrap_content" /> <ImageView android:id="@+id/image_view" android:layout_width="100dp" android:layout_height="100dp" /></LinearLayout>===============item_text_layout=========================================
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="horizontal" android:padding="10dp" android:layout_width="match_parent" android:layout_height="match_parent"> <TextView android:id="@+id/text_title" android:layout_width="wrap_content" android:layout_height="wrap_content" /></LinearLayout>
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