无限轮播+商品展示+下拉刷新
//页面布局
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".GoodsActivity"
android:orientation="vertical"
>
android:layout_width="fill_parent"
android:layout_height="fill_parent">
android:layout_height="match_parent"
android:orientation="vertical"
>
android:layout_height="240dp"
android:orientation="vertical"
>
android:layout_height="240dp">
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#0f0"
>
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_alignParentBottom="true"
android:background="#ff5656"
android:gravity="center"
android:orientation="horizontal">
android:layout_width="match_parent"
android:layout_height="match_parent">
//java代码
public class GoodsActivity extends AppCompatActivity {
private static final String TAG = "GoodsActivity---";
private MyListView listview;
private PullToRefreshScrollView pull;
private MyGoodsAdapter adapter;
private ViewPager viewpager;
private LinearLayout line;
private List
private List
private List
private int page = 1;
private Handler handler = new Handler() {
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
viewpager.setCurrentItem(viewpager.getCurrentItem() + 1);
for (int i = 0; i < cir.size(); i++) {
if (i == viewpager.getCurrentItem() % cir.size()) {
cir.get(i).setSelected(true);
} else {
cir.get(i).setSelected(false);
}
}
handler.sendEmptyMessageDelayed(0, 2000);
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_goods);
//初始化页面
initViews();
//请求轮播图
getDataFormNet();
// getGoods();
}
//轮播图
public void getDataFormNet() {
HttpUtils httpUtils = HttpUtils.getHttpUtils();
httpUtils.get(HttpConfig.URL4);
httpUtils.setHttpListener(new HttpUtils.HttpListener() {
private MyPageAdapter adapter;
@Override
public void getSuccess(String json) {
Log.d(TAG, "getSuccess: " + json);
Gson gson = new Gson();
GoodsBean goods = gson.fromJson(json, GoodsBean.class);
//将数据添加到集合
final List
for (int i = 0; i < data.size(); i++) {
String icon = data.get(i).getIcon();
ImageView imageView = new ImageView(GoodsActivity.this);
//缩放
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
ImageLoader.getInstance().displayImage(icon, imageView, MyApp.getOptions());
lunbo.add(imageView);
//点击标题进行吐司
final int j = i;
imageView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(GoodsActivity.this, data.get(j).getTitle(), Toast.LENGTH_SHORT).show();
}
});
//添加小圆点
ImageView img = new ImageView(GoodsActivity.this);
img.setImageResource(R.drawable.select_end);
cir.add(img);
//img.setPadding(5,0,5,0);
LinearLayout.LayoutParams li = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
li.setMargins(10, 0, 10, 0);
img.setLayoutParams(li);
line.addView(img, i);
}
//默认显示第一个
cir.get(0).setSelected(true);
//设置适配器
adapter = new MyPageAdapter(lunbo);
viewpager.setAdapter(adapter);
//请求商品
getGoods();
//发送hndler请求开始自动轮播
handler.sendEmptyMessageDelayed(0, 2000);
}
@Override
public void getError(String error) {
}
});
}
//请求商品数据
private void getGoods() {
HttpUtils httpUtils = HttpUtils.getHttpUtils();
httpUtils.get(HttpConfig.URL5 + page);
httpUtils.setHttpListener(new HttpUtils.HttpListener() {
@Override
public void getSuccess(String json) {
Log.d(TAG, "商品数据: " + json);
Gson gson = new Gson();
ShopBean shop = gson.fromJson(json, ShopBean.class);
List
Log.d(TAG, "数--------- " + sh);
if (page == 1) {
list.clear();
}
if (sh.size() == 0) {
Toast.makeText(GoodsActivity.this, "数据一倒头，没有了", Toast.LENGTH_SHORT).show();
}
if (sh != null) {
list.addAll(sh);
}
//请求商品数据
adapter = new MyGoodsAdapter(GoodsActivity.this, list);
listview.setAdapter(adapter);
//刷新适配器
adapter.notifyDataSetChanged();
pull.onRefreshComplete();
}
@Override
public void getError(String error) {
}
});
}
//初始化页面
private void initViews() {
pull = findViewById(R.id.goods_scrollview);
viewpager = findViewById(R.id.goods_viewpager);
line = findViewById(R.id.goods_line);
listview = findViewById(R.id.goods_listview);
//刷新
pull.setMode(PullToRefreshBase.Mode.BOTH);
pull.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener2
@Override
public void onPullDownToRefresh(PullToRefreshBase
page = 1;
//调用请求数据的方法
getGoods();
}
@Override
public void onPullUpToRefresh(PullToRefreshBase
page++;
//调用请求数据的方法
getGoods();
}
});
viewpager.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()){
case MotionEvent.ACTION_DOWN:
handler.removeCallbacksAndMessages(null);
break;
case MotionEvent.ACTION_UP:
handler.sendEmptyMessageDelayed(0,2000);
break;
case MotionEvent.ACTION_MOVE:
handler.removeCallbacksAndMessages(null);
break;
}
return false;
}
});
}
}
//轮播的适配器
public class MyPageAdapter extends PagerAdapter{
private List
public MyPageAdapter(List
this.list = list;
}
@Override
public int getCount() {
return Integer.MAX_VALUE;
}
@Override
public boolean isViewFromObject(@NonNull View view, @NonNull Object object) {
return view==object;
}
@NonNull
@Override
public Object instantiateItem(@NonNull ViewGroup container, int position) {
ImageView imageView = list.get(position%list.size());
container.addView(imageView);
return imageView;
}
@Override
public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
container.removeView((ImageView) object);
}
}
//商品展示适配器
public class MyGoodsAdapter extends BaseAdapter {
private Context context;
private List
public MyGoodsAdapter(Context context, List
this.context = context;
this.list = list;
}
@Override
public int getCount() {
return list.size();
}
@Override
public Object getItem(int position) {
return list.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if(convertView==null){
convertView=View.inflate(context,R.layout.item_goods,null);
holder = new ViewHolder();
holder.img=convertView.findViewById(R.id.g_img);
holder.text=convertView.findViewById(R.id.g_text);
convertView.setTag(holder);
}else{
holder=(ViewHolder) convertView.getTag();
}
String pic = list.get(position).getImages();
String s = pic.split("\\|")[0];
ImageLoader.getInstance().displayImage(s,holder.img, MyApp.getOptions());
holder.text.setText(list.get(position).getTitle());
return convertView;
}
class ViewHolder{
ImageView img;
TextView text;
}
}
//商品展示的适配器
public class MyGoodsAdapter extends BaseAdapter {
private Context context;
private List
public MyGoodsAdapter(Context context, List
this.context = context;
this.list = list;
}
@Override
public int getCount() {
return list.size();
}
@Override
public Object getItem(int position) {
return list.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if(convertView==null){
convertView=View.inflate(context,R.layout.item_goods,null);
holder = new ViewHolder();
holder.img=convertView.findViewById(R.id.g_img);
holder.text=convertView.findViewById(R.id.g_text);
convertView.setTag(holder);
}else{
holder=(ViewHolder) convertView.getTag();
}
String pic = list.get(position).getImages();
String s = pic.split("\\|")[0];
ImageLoader.getInstance().displayImage(s,holder.img, MyApp.getOptions());
holder.text.setText(list.get(position).getTitle());
return convertView;
}
class ViewHolder{
ImageView img;
TextView text;
}
}