package com.example.demo20180624_demo1;
import android.graphics.Color;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.HorizontalScrollView;
import android.widget.LinearLayout;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
private HorizontalScrollView hs;
private LinearLayout linearLayout;
private ViewPager viewPager;
private String title[] = {"推荐", "视频", "热点", "北京", "娱乐", "图片", "懂车帝", "体育","财经", "国际","健康"};
private List<TextView> list;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
hs = findViewById(R.id.hs);
linearLayout = findViewById(R.id.linear);
viewPager = findViewById(R.id.pager);
list = new ArrayList<>();
for (int i = 0; i < title.length; i++){
TextView textView = new TextView(this);
textView.setText(title[i]);
textView.setTextSize(20);
textView.setId(i+1000);
textView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
int id = v.getId();
viewPager.setCurrentItem(id-1000);
}
});
if (i == 0){
textView.setTextColor(Color.RED);
}else {
textView.setTextColor(Color.BLACK);
}
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(ViewPager.LayoutParams.WRAP_CONTENT, ViewPager.LayoutParams.WRAP_CONTENT);
layoutParams.setMargins(50,10,50,10);
linearLayout.addView(textView,layoutParams);
list.add(textView);
}
viewPager.setAdapter(new Myadapter(getSupportFragmentManager()));
viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
for (int i = 0; i < list.size(); i++){
if (position == i){
list.get(i).setTextColor(Color.RED);
}else{
list.get(i).setTextColor(Color.BLACK);
}
TextView textView = list.get(position);
int width = textView.getWidth()+10;
hs.scrollTo(width*position,0);
}
}
@Override
public void onPageSelected(int position) {
}
@Override
public void onPageScrollStateChanged(int state) {
}
});
}
class Myadapter extends FragmentPagerAdapter{
public Myadapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
return Frgment1.getInstance(list.get(position).getText().toString());
}
@Override
public int getCount() {
return list.size();
}
}
}
package com.example.demo20180624_demo1;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.google.gson.Gson;
import com.youth.banner.Banner;
import java.util.ArrayList;
import java.util.List;
public class Frgment1 extends Fragment {
private Banner banner;
private String image = "https://www.zhaoapi.cn/ad/getAd";
private List<String> lists;
private HttpUtils httpUtils;
private String images;
private List<ImageBean.TuijianBean.ListBean> list;
public static Fragment getInstance(String title){
Frgment1 frgment1 = new Frgment1();
Bundle bundle = new Bundle();
bundle.putString("title",title);
frgment1.setArguments(bundle);
return frgment1;
}
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment1,container,false);
Bundle arguments = getArguments();
String title = arguments.getString("title");
banner = view.findViewById(R.id.banner);
lists = new ArrayList<>();
httpUtils = HttpUtils.getInstance();
httpUtils.getdata(image);
httpUtils.getHttpLienter(new HttpUtils.HttpLienter() {
@Override
public void getjsondata(String json) {
Gson gson = new Gson();
ImageBean imageBean = gson.fromJson(json, ImageBean.class);
list = imageBean.getTuijian().getList();
for (int i = 0; i < list.size(); i++){
images = list.get(i).getImages();
lists.add(images);
}
}
});
if (arguments.get("title").equals("推荐")){
banner.setImageLoader(new GlideBanner());
banner.setImages(lists);
banner.start();
}
return view;
}
}
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
tools:context=".MainActivity">
<HorizontalScrollView
android:id="@+id/hs"
android:layout_width="match_parent"
android:scrollbars="none"
android:layout_height="wrap_content">
<LinearLayout
android:id="@+id/linear"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"></LinearLayout>
</HorizontalScrollView>
<android.support.v4.view.ViewPager
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@id/hs"></android.support.v4.view.ViewPager>
</RelativeLayout>
<?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">
<com.youth.banner.Banner
android:id="@+id/banner"
android:layout_width="match_parent"
android:layout_height="200dp"></com.youth.banner.Banner>
</LinearLayout>