HorizontalScrollView 使用

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import android.graphics.Color;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.HorizontalScrollView;
import android.widget.LinearLayout;
import android.widget.TextView;

import java.util.ArrayList;
import java.util.List;

class MainActivity extends AppCompatActivity implements View.OnClickListener {
private HorizontalScrollView hsv;
private ViewPager vp;

private LinearLayout container_id;
private int position;
private List<String> titleList;
private MyPagerAdapter adapter;
private List<Fragment> fragmentList;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
hsv = (HorizontalScrollView) findViewById(R.id.hsv);
vp = (ViewPager) findViewById(R.id.vp);
container_id = (LinearLayout) findViewById(R.id.container_id);

initData();
addTitleAndFragment();
adapter = new MyPagerAdapter(getSupportFragmentManager(), fragmentList);
vp.setAdapter(adapter);
/**
* 监听ViewPager事件
*/
vp.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {

}

@Override
public void onPageSelected(int position) {
// 选中切换变色
clickChangeColor(position);
// 计算控件要滑动的距离
// 共有多少margin
int margins = 20 * position;
int totalWidth = 0;
for (int j = 0; j < position; j++) {
TextView tView = (TextView) container_id.getChildAt(j);
int width = tView.getWidth();
totalWidth += width;
}
// hsv计算滑动的位置
hsv.scrollTo((totalWidth + margins), 0);
}

@Override
public void onPageScrollStateChanged(int state) {

}
});
}
// 1. 向LinearLayout里面添加数据
// 2. 向ViewPager里面添加Fragment
private void addTitleAndFragment() {
for (int i = 0; i < titleList.size(); i++) {
TextView tex = new TextView(this);
tex.setText(titleList.get(i));
tex.setTextSize(20);
if (i == 0) {
tex.setTextColor(Color.RED);
} else {
tex.setTextColor(Color.BLACK);
}
tex.setOnClickListener(this);
tex.setId(i + 1000);
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT);
layoutParams.setMargins(15, 8, 15, 8);
tex.setLayoutParams(layoutParams);
container_id.addView(tex);
ContentFragment contentFragment = new ContentFragment();
fragmentList.add(contentFragment);

}

}

//设置tetle 标题
private void initData() {
fragmentList = new ArrayList<>();
titleList = new ArrayList<>();
String[] srt = {"热点", "科技", "文化", "中国", "视频", "微头条", "军事", "游戏", "直播", "养殖", "风景", "大海", "制度", "古董", "女性"};
for (int i = 0; i < 15; i++) {
titleList.add(srt[i]);
}
}

//设置字体变色
private void clickChangeColor(int position) {
for (int i = 0; i < titleList.size(); i++) {
TextView txtview = (TextView) container_id.getChildAt(i);
if (position == i) {
txtview.setTextColor(Color.RED);
} else {
txtview.setTextColor(Color.BLACK);
}
}
}

@Override
public void onClick(View view) {
int id = view.getId();
position = id - 1000;
vp.setCurrentItem(position);
clickChangeColor(position);
}

}

2.

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;

import com.google.gson.Gson;

import org.xutils.common.Callback;
import org.xutils.http.RequestParams;
import org.xutils.x;

import java.util.ArrayList;
import java.util.List;

public class ContentFragment extends Fragment {
private ListView list_view;
private List<Bean.DataBean> list=new ArrayList<>();
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

return inflater.inflate(R.layout.fragment_loyout,container,false);
}

@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
getDataFragment();
}

public void getDataFragment() {
String url="http://api.expoon.com/AppNews/getNewsList/type/1/p/1";
RequestParams params=new RequestParams();
params.setUri(url);
x.http().get(params, new Callback.CommonCallback<String>() {
@Override
public void onSuccess(String result) {

if (result != null){

Gson gson=new Gson();
Bean bean = gson.fromJson(result, Bean.class);

List<Bean.DataBean> data = bean.getData();

list_view = (ListView) getView().findViewById(R.id.list_view);
MyListAdapter adapter=new MyListAdapter(getContext(),data);
list_view.setAdapter(adapter);

}
}

@Override
public void onError(Throwable ex, boolean isOnCallback) {

}

@Override
public void onCancelled(CancelledException cex) {

}

@Override
public void onFinished() {

}
});

}
}

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import org.xutils.x;

import java.util.List;

public class MyListAdapter extends BaseAdapter {
private Context context;
private List<Bean.DataBean> list;

public MyListAdapter(Context context, List<Bean.DataBean> 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 View getView(int i, View view, ViewGroup viewGroup) {
MyViewHolder holder;
if (view==null){
holder=new MyViewHolder();
view = LayoutInflater.from(context).inflate(R.layout.itme_layout, null);
holder.tvtetle= (TextView) view.findViewById(R.id.tvtetle);
holder.tvContent= (TextView) view.findViewById(R.id.tvContent);
holder.ivIcon= (ImageView) view.findViewById(R.id.ivIcon);
view.setTag(holder);
}else{
holder= (MyViewHolder) view.getTag();
}
Bean.DataBean bean = list.get(i);
holder.tvtetle.setText(bean.getNews_title());
holder.tvContent.setText(bean.getNews_summary());
x.image().bind(holder.ivIcon,bean.getPic_url());
return view;
}
static class MyViewHolder{
private TextView tvtetle,tvContent;
private ImageView ivIcon;
}
}

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;

import java.util.List;

public class MyPagerAdapter extends FragmentPagerAdapter {
private List<Fragment> fragmentList;
public MyPagerAdapter(FragmentManager fm,List<Fragment> fragmentList) {
super(fm);
this.fragmentList=fragmentList;
}

@Override
public Fragment getItem(int position) {
return fragmentList.get(position);
}

@Override
public int getCount() {
return fragmentList.size();
}
}

//布局1

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:id="@+id/activity_main"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical">    <HorizontalScrollView        android:id="@+id/hsv"        android:layout_width="match_parent"        android:layout_height="55dp"        android:scrollbars="none">        <LinearLayout            android:id="@+id/container_id"            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:orientation="horizontal"></LinearLayout>    </HorizontalScrollView>    <android.support.v4.view.ViewPager        android:id="@+id/vp"        android:layout_width="match_parent"        android:layout_height="match_parent"></android.support.v4.view.ViewPager></LinearLayout>

//布局2

<?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">    <ListView        android:id="@+id/list_view"        android:layout_width="match_parent"        android:layout_height="match_parent"></ListView></LinearLayout>

//布局3

<?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/ivIcon"        android:layout_width="100dp"        android:layout_height="100dp"        />    <LinearLayout        android:layout_width="match_parent"        android:layout_height="100dp"        android:orientation="vertical">        <TextView            android:id="@+id/tvtetle"            android:layout_width="match_parent"            android:layout_height="40dp"            android:textSize="20sp" />        <TextView            android:id="@+id/tvContent"            android:layout_width="match_parent"            android:layout_height="60dp"            android:maxLines="2"            android:textSize="14sp" />    </LinearLayout></LinearLayout>

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