在adapter中实现点击图片，显示dialog public HomeMsgAdapter(Context context,List<HomeMsgBean> list){

第一步，首先确定在dialog中的布局文件

第二步：在adapter的构造函数中编写view，和dialog，因为这样面对所有类型的文件，都可以直接用构造函数创建的对象，提高性能

第三部：创建dialog中的布局文件的各个控件的实例对象

第四部：在控件的点击事件中，显示dialog,并且实现相应的操作，比如在dialog上面显示图片等等

下面为adapter中的代码：

    public HomeMsgAdapter(Context context,List<HomeMsgBean> list){        this.list=list;        mInflater = LayoutInflater.from(context);//        //将以前的实例化对象，放到这里来实现，之后对各个控件的赋值实例化都不是现在getView（）函数中//        View view = mInflater.inflate(R.layout.msg_write_layout, null);        /**         * 在Adapter中实现点击图片，可以实现放大缩小图片的功能，就可以将对象实例化放在构造函数中,代码如下         */        View view=mInflater.inflate(R.layout.weibo_img_dlg,null);        dialog=new Dialog(context,R.style.simple_dialog);        dialog.setContentView(view);        /**         * 实例化dialog中控件对象         */        imgView = (ImageView) view.findViewById(R.id.img_weibo_img);        pb = (ProgressBar) view.findViewById(R.id.progress_wbimg_load);        btnBig = (Button) view.findViewById(R.id.btn_big);    }

然后在imageview中实现点击事件：

holder.commont_head.setImageResource(list.get(position).getCommont());

holder.commont_head.setOnClickListener(new View.OnClickListener() {    @Override    public void onClick(View v) {        imgView.setImageResource(list.get(position).getCommont());        dialog.show();    }});

整个页面的源代码：

package Adapter;import android.app.Dialog;import android.content.Context;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.Button;import android.widget.ImageView;import android.widget.ProgressBar;import android.widget.TextView;import java.util.List;import Bean.HomeMsgBean;import app.coolweather.com.weibo.R;import imgCache.SimpleImageLoader;/**用于 * Created by Administrator on 2016/9/4. *十八章的重点：将超链接转换成不是超链接的数据，并且解析，得到你想要的数据 * holder.txt_wb_item_from.setMovementMethod(LinkMovementMethod.getInstance());       这句话表示能不能实现listview中控件的点击 * holder.txt_wb_item_from.setText("来着:"+Html.fromHtml(s.getSource())); */public class HomeMsgAdapter extends BaseAdapter  {    private List<HomeMsgBean> list;      //将数据放入Adapter中    private LayoutInflater mInflater;    private Dialog dialog;    public ImageView imgView;    public ProgressBar pb;    public Button btnBig;    public HomeMsgAdapter(Context context,List<HomeMsgBean> list){        this.list=list;        mInflater = LayoutInflater.from(context);//        //将以前的实例化对象，放到这里来实现，之后对各个控件的赋值实例化都不是现在getView（）函数中//        View view = mInflater.inflate(R.layout.msg_write_layout, null);        /**         * 在Adapter中实现点击图片，可以实现放大缩小图片的功能，就可以将对象实例化放在构造函数中,代码如下         */        View view=mInflater.inflate(R.layout.weibo_img_dlg,null);        dialog=new Dialog(context,R.style.simple_dialog);        dialog.setContentView(view);        /**         * 实例化dialog中控件对象         */        imgView = (ImageView) view.findViewById(R.id.img_weibo_img);        pb = (ProgressBar) view.findViewById(R.id.progress_wbimg_load);        btnBig = (Button) view.findViewById(R.id.btn_big);    }    @Override    public int getCount() {        return list==null?0:list.size();    }    @Override    public Object getItem(int position) {        return list==null?null:list.get(position);    }    @Override    public long getItemId(int position) {        return position;    }    @Override    public View getView(int position, View convertView, ViewGroup parent) {//        View view = convertView;//        if(view==null){//            Holder holder=new Holder();//            view = LayoutInflater.from(context).inflate(R.layout.msg_write_layout, null);//加载布局文件，该布局文件为listview中的文件，返回v对象,即自己的模板文件//            //创建对象//            holder.user_content_textView= (TextView) view.findViewById(R.id.user_content);//            holder.user_head= (ImageView) view.findViewById(R.id.user_head);//            holder.commont_head=(ImageView)view.findViewById(R.id.user_head_one);//            holder.user_time=(TextView)view.findViewById(R.id.time_put);//            holder.commont_child=(TextView)view.findViewById(R.id.user_content_one);//            holder.commont_head_two=(ImageView)view.findViewById(R.id.user_head_two);//            //给各个对象赋值//            holder.user_content_textView.setText(list.get(position).getName());//            holder.user_head.setImageResource(list.get(position).getHead());    //setImageResource()中间填写R.drawable.picture//            holder.commont_head.setImageResource(list.get(position).getCommont());//            holder.user_time.setText(list.get(position).getContent());//            holder.commont_child.setText(list.get(position).getContent_child());//            holder.commont_head_two.setImageResource(list.get(position).getCommont_head());   //setImageResource()中间填写R.drawable.picture////        }        return createViewFromResource(position,convertView);    }    private View createViewFromResource(int position, View convertView)    {        View v;        if (convertView == null) {            v = mInflater.inflate(R.layout.msg_write_layout, null);        } else {            v = convertView;        }        bindView(position, v);        return v;    }     private  void bindView(final int position,View view){         Holder holder=new Holder();         holder.user_content_textView= (TextView) view.findViewById(R.id.user_content);         holder.user_head= (ImageView) view.findViewById(R.id.user_head);         holder.commont_head=(ImageView)view.findViewById(R.id.user_head_one);         holder.user_time=(TextView)view.findViewById(R.id.time_put);         holder.commont_child=(TextView)view.findViewById(R.id.user_content_one);         holder.commont_head_two=(ImageView)view.findViewById(R.id.user_head_two);         //给各个对象赋值         holder.user_content_textView.setText(list.get(position).getName());  //       holder.user_head.setImageResource(list.get(position).getHead());    //setImageResource()中间填写R.drawable.picture         holder.commont_head.setImageResource(list.get(position).getCommont());         holder.user_time.setText(list.get(position).getContent());         holder.commont_child.setText(list.get(position).getContent_child());         holder.commont_head_two.setImageResource(list.get(position).getCommont_head());   //setImageResource()中间填写R.drawable.picture       SimpleImageLoader.showImg(holder.user_head,"http://image6.huangye88.com/2013/07/26/370d6cd0c79c4269.jpg");         holder.commont_head.setOnClickListener(new View.OnClickListener() {             @Override             public void onClick(View v) {                 imgView.setImageResource(list.get(position).getCommont());                 dialog.show();             }         });     }    //静态类用于声明各个控件的对象，实现性能的优化    private static class Holder{        TextView user_content_textView;        ImageView user_head;        ImageView commont_head;        TextView user_time;        TextView commont_child;        ImageView commont_head_two;    }}