list优化viewPager优化自动轮播图传值

MainActivity.java

package com.bwie.day06_demo1;

import com.bwie.day06_demo1.ListFragment.Fash;

import android.app.Activity;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.view.Menu;
import android.view.MenuItem;

public class MainActivity extends FragmentActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    ListFragment listFragment = new ListFragment();
    final PagerFragment pagerFragment = new PagerFragment();

    FragmentManager supportFragmentManager = getSupportFragmentManager();
    FragmentTransaction beginTransaction = supportFragmentManager.beginTransaction();
    beginTransaction.replace(R.id.frame1, listFragment);
    beginTransaction.replace(R.id.frame2, pagerFragment);

    beginTransaction.commit();


    listFragment.setFash(new Fash() {

        @Override
        public void send(String name) {
            // TODO Auto-generated method stub
            pagerFragment.setext(name);
        }
    });
}

}

---

ListFragment.java

package com.bwie.day06_demo1;

import java.util.ArrayList;

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.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;

public class ListFragment extends Fragment{

private ArrayList<String> list;
private ListView listView;
private Fash fash;//添加一个set


interface Fash{
    public void send(String name);
}


public void setFash(Fash fash) {
    this.fash = fash;
}

@Override
public View onCreateView(LayoutInflater inflater,
        @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    View view = View.inflate(getActivity(), R.layout.item_list, null);

    listView = (ListView) view.findViewById(R.id.listview);
    list = new ArrayList<String>();
    for (int i = 0; i < 10; i++) {
        list.add("第"+i+"条数据");
    }
    listView.setAdapter(new ListAdapter(getActivity(), list));

    listView.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> parent, View view,
                int position, long id) {
            // TODO Auto-generated method stub
            String name = list.get(position);
            if(fash != null){
                fash.send(name);
            }
        }
    });
    return view;
}

}

ListAdapter.java

package com.bwie.day06_demo1;

import java.util.ArrayList;

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

public class ListAdapter extends BaseAdapter {

private Context mContext;
private ArrayList<String> list;

public ListAdapter(Context mContext, ArrayList<String> list) {
    super();
    this.mContext = mContext;
    this.list = list;
}

@Override
public int getCount() {
    // TODO Auto-generated method stub
    return list.size();
}

@Override
public Object getItem(int position) {
    // TODO Auto-generated method stub
    return list.get(position);
}

@Override
public long getItemId(int position) {
    // TODO Auto-generated method stub
    return position;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    // TODO Auto-generated method stub
    ViewHolder holder = null;
    if (convertView == null) {
        convertView = View.inflate(mContext, R.layout.list, null);
        holder = new ViewHolder();
        holder.text = (TextView) convertView.findViewById(R.id.text);
        convertView.setTag(holder);
    } else {
        holder = (ViewHolder) convertView.getTag();
    }

    holder.text.setText(list.get(position));
    return convertView;
}

class ViewHolder {
    TextView text;
}

}

PagerFragment.java

package com.bwie.day06_demo1;

import java.util.ArrayList;

import android.R.integer;
import android.os.Bundle;
import android.os.Handler;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.RadioGroup;
import android.widget.TextView;

public class PagerFragment extends Fragment {

private ViewPager pager;
private ArrayList<Integer> list;
private RadioGroup group;
int i = 0;

@Override
public View onCreateView(LayoutInflater inflater,
        @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    View view = View.inflate(getActivity(), R.layout.item_pager, null);
    pager = (ViewPager) view.findViewById(R.id.viewpager);
    group = (RadioGroup) view.findViewById(R.id.radiogroup);
    list = new ArrayList<Integer>();
    list.add(R.drawable.t);
    list.add(R.drawable.u);
    list.add(R.drawable.v);
    pager.setAdapter(new ViewAdapter(list, getActivity()));
    pager.setCurrentItem(100000);
    handler.sendEmptyMessageDelayed(i, 1000);
    pager.setOnPageChangeListener(new OnPageChangeListener() {

        @Override
        public void onPageSelected(int arg0) {
            // TODO Auto-generated method stub
            switch (arg0 % list.size()) {
            case 0:
                group.check(R.id.btn1);
                break;
            case 1:
                group.check(R.id.btn2);
                break;
            case 2:
                group.check(R.id.btn3);
                break;

            default:
                break;
            }
        }

        @Override
        public void onPageScrolled(int arg0, float arg1, int arg2) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onPageScrollStateChanged(int arg0) {
            // TODO Auto-generated method stub

        }
    });
    textView = (TextView) view.findViewById(R.id.textview);
    return view;
}

public void setext(String name){
    textView.setText(name);
}
Handler handler = new Handler() {
    public void handleMessage(android.os.Message msg) {
        pager.setCurrentItem(pager.getCurrentItem()+1);
        handler.sendEmptyMessageDelayed(i, 1000);
    };
};
private TextView textView;
 @Override
public void onDestroy() {
    // TODO Auto-generated method stub
     handler.removeCallbacksAndMessages(null);
}

}

---

ViewAdapter.java

package com.bwie.day06_demo1;

import java.util.ArrayList;

import android.content.Context;
import android.support.v4.view.PagerAdapter;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;

public class ViewAdapter extends PagerAdapter{

private ArrayList<Integer> list;
private Context mContext;

public ViewAdapter(ArrayList<Integer> list, Context mContext) {
    super();
    this.list = list;
    this.mContext = mContext;
}

@Override
public int getCount() {
    // TODO Auto-generated method stub
    return Integer.MAX_VALUE;
}

@Override
public boolean isViewFromObject(View arg0, Object arg1) {
    // TODO Auto-generated method stub
    return arg0 == arg1;
}
@Override
public Object instantiateItem(ViewGroup container, int position) {
    // TODO Auto-generated method stub
    ImageView imageView = new ImageView(mContext);
    imageView.setImageResource(list.get(position % list.size()));
    imageView.setScaleType(ImageView.ScaleType.FIT_XY);
    container.addView(imageView);
    return imageView;
}
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
    // TODO Auto-generated method stub
    container.removeView((View) object);
}

}

---

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