viewpager轮播图--狸菇凉__ic class indexviewpager { private static int index-优快云博客

本文链接：https://blog.youkuaiyun.com/HiSunyl/article/details/71149452

packagecom.main.mouthtest;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.Toast;
import com.google.gson.Gson;
import com.lidroid.xutils.HttpUtils;
import com.lidroid.xutils.exception.HttpException;
import com.lidroid.xutils.http.ResponseInfo;
import com.lidroid.xutils.http.callback.RequestCallBack;
import com.lidroid.xutils.http.client.HttpRequest;
import com.main.bean.Weather_bean;
import com.nostra13.universalimageloader.core.DisplayImageOptions;
import com.nostra13.universalimageloader.core.ImageLoader;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
import java.util.List;
/**
*时间：2017/4/28
* 类用途：Fragment1的类查询天气
*/
public class Fragment1extends Fragment {
private staticViewPager view_pager;
private static List<View>dots;
private static int lodposition= 0;
private static int index= 0;
private ArrayList<String>arr;
private LinearLayoutlin_dot;
private boolean istrue= true;
private MyHandlermyHandler;
protected voidonCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.f1);
istrue =true;
initview();
pricture();
//实例化
MyViewPagerAdapter adapter =new MyViewPagerAdapter();
view_pager.setAdapter(adapter);
setdot();
myHandler =new MyHandler((MainActivity) getActivity());
new Thread(){
@Override
public voidrun() {
while(istrue){
try{
sleep(1000);
myHandler.sendEmptyMessage(0);
}catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}.start();
}
//view_pager和设置小圆点的地方
public voidsetdot() {
//监听
view_pager.addOnPageChangeListener(newViewPager.OnPageChangeListener() {
@Override
public voidonPageScrolled(intposition, floatpositionOffset, intpositionOffsetPixels) {
}
@Override
public voidonPageSelected(intposition) {
dots.get(position %dots.size()).setBackgroundResource(R.mipmap.dot_true);
dots.get(lodposition).setBackgroundResource(R.mipmap.doy_false);
lodposition= (position % dots.size());
index= position;
}
@Override
public voidonPageScrollStateChanged(intstate) {
}
});
}
//加载图片
private voidpricture() {
arr= newArrayList<>();
arr.add("https://timgsa.baidu.com/timg?"+
"image&quality=80&size=b9999_10000&sec=1493378180369&di=ea0f7952dd3fc7e202b26e7d70e3cbd9&"+
"imgtype=0&src=http%3A%2F%2Fimg15.3lian.com%2F2015%2Fh1%2F35%2Fd%2F192.jpg");
arr.add("https://timgsa.baidu.com/timg?"+
"image&quality=80&size=b9999_10000&sec=1493378222373&di=acc62bc138e69acacbf6c8a9a2439f3d&"+
"imgtype=0&src=http%3A%2F%2Fimg3.duitang.com%2Fuploads%2Fitem%2F201608%2F08%2F20160808124358_sH4Ea.thumb.700_0.jpeg");
arr.add("https://timgsa.baidu.com/timg?"+
"image&quality=80&size=b9999_10000&sec=1493378274676&di=f3349d7217e0f3b7269f16abc0d35b7e&"+
"imgtype=0&src=http%3A%2F%2Fimg3.duitang.com%2Fuploads%2Fitem%2F201608%2F03%2F20160803105655_QMznk.thumb.700_0.jpeg");
/**
* for循环小圆点的
*/
dots= newArrayList<View>();
for (inti = 0;i < arr.size();i++) {
View view = newView(getActivity());
LinearLayout.LayoutParams layoutParams =new LinearLayout.LayoutParams(30,30);
view.setLayoutParams(layoutParams);
dots.add(view);
if (i ==0) {
dots.get(i).setBackgroundResource(R.mipmap.dot_true);
}else {
dots.get(i).setBackgroundResource(R.mipmap.doy_false);
}
lin_dot.addView(dots.get(i));
}
}
//各个控件的id和button_act的监听
private voidinitview() {
lin_dot= (LinearLayout) getActivity().findViewById(R.id.lin_dot);
//找到view_pager的控件
view_pager= (ViewPager) getActivity().findViewById(R.id.view_pager);
button_act.setOnClickListener(newView.OnClickListener() {
@Override
public voidonClick(View v) {
getweather(edit_act.getText().toString());
}
});
}
/**
* viewpager的适配器
*/
private classMyViewPagerAdapter extendsPagerAdapter {
@Override
public intgetCount() {
returnInteger.MAX_VALUE;
}
@Override
public booleanisViewFromObject(View view,Object object) {
returnview == object;
}
@Override
public voiddestroyItem(ViewGroup container, intposition,Object object) {
}
@Override
publicObject instantiateItem(ViewGroup container, final intposition) {
ImageView imageView = new ImageView(getActivity());
DisplayImageOptions builder =new DisplayImageOptions.Builder()
.showImageOnLoading(R.mipmap.ic_launcher)
.showImageOnFail(R.mipmap.ic_launcher)
.cacheOnDisk(true)
.cacheInMemory(false)
.build();
//youcuo
ImageLoader.getInstance().displayImage(arr.get(position % arr.size()),imageView,builder);
imageView.setOnClickListener(newView.OnClickListener() {
@Override
public voidonClick(View v) {
Toast.makeText(getActivity(),"点击了"+ position,Toast.LENGTH_SHORT).show();
}
});
container.addView(imageView);
return imageView;
}
}
//失去焦点
@Override
public voidonPause() {
super.onPause();
istrue= false;
}
private static classMyHandler extendsHandler{
private finalWeakReference<MainActivity> reference;
public MyHandler(MainActivity mainActivity) {
reference= newWeakReference<>(mainActivity);
}
@Override
public voidhandleMessage(Message msg) {
super.handleMessage(msg);
if (reference.get() !=null) {
switch(msg.what){
case0:
{
view_pager.setCurrentItem(index,false);
index++;
}
break;
}
}
}
}
}