android > ListView > 加载 网络/assets图片

先设置 好 2 个 布局文件 一个 是 主的login.xml， 一个 是 listView 内部的 login_list.xml

 

 

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <ListView 
		  android:id="@android:id/list"  
		  android:layout_width="fill_parent"  
		  android:layout_height="wrap_content"  
		  android:drawSelectorOnTop="false"  
		  android:scrollbars="vertical"          
        ></ListView>

   
</LinearLayout>

 

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="horizontal" 
    android:padding="8dip"
    >
    <ImageView   
       android:id="@+id/login_list_left"  
       android:layout_width="wrap_content"  
       android:layout_height="wrap_content"  
       android:layout_alignParentLeft="true"  
       >     
   </ImageView>      
   <TextView   
       android:id="@+id/login_list_right"  
       android:layout_width="wrap_content"  
       android:layout_height="wrap_content"  
       android:layout_alignParentRight="true"  
       >     
   </TextView>  

</LinearLayout>

 

 

然后是 MyListAdapter.java

这个里面要设置  listView 内部布局文件 的对象， 和 里面 指针的 对应 

 

package login.mft;

import java.util.List;

import remote.mft.R;
import android.app.Activity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

public class MyListAdapter extends BaseAdapter {
	private Activity context;
	private List<Commentinfo> list;

	public MyListAdapter(Activity context, List<Commentinfo> list) {
		this.context = context;
		this.list = list;
	}


	public View getView(int position, View convertView, ViewGroup parent) {
		LayoutInflater inflater = context.getLayoutInflater();
		View itemView = inflater.inflate(R.layout.login_list, null);	//要设置listVeiw内部布局的layout
		Commentinfo info = list.get(position);
		
		TextView textView = (TextView) itemView.findViewById(R.id.login_list_right);	//要设置	
		ImageView imageView = (ImageView) itemView.findViewById(R.id.login_list_left);	//要设置
		
		textView.setText(info.getSensor_name());	//要设置
		imageView.setImageBitmap(info.getSensor_image());	//要设置
		
		return itemView;
	}

	public int getCount() {
		return list.size();
	}

	
	public Object getItem(int position) {
		return list.get(position);
	}

	
	public long getItemId(int position) {
		return position;
	}

	
}

 

然后是是 Commentinfo.java 类， 他是 listView 内部对象指针的定义 

 

package login.mft;

import android.graphics.Bitmap;

public class Commentinfo {
	
	private Bitmap sensor_image;	//要设置
    private String sensor_name;   //要设置
  
    public Commentinfo(Bitmap sensor_image, String sensor_name  ) {  
        super();  
        this.sensor_image = sensor_image;	//要设置
        this.sensor_name = sensor_name ;	//要设置
        
    }  
    public Bitmap getSensor_image() {
		return sensor_image;	//要设置
	}

	public String getSensor_name() {
		return sensor_name;	//要设置
	}


}

 

然后是主 Activity ,  LoginIndexActivity .java

 

package login.mft;

import gloabal.BitmapUtils;


import java.util.ArrayList;
import java.util.List;
import remote.mft.R;
import android.app.ListActivity;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;

public class LoginIndexActivity extends ListActivity {
    /** Called when the activity is first created. */

	private Bitmap bmp;
	
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.login);        
        ////////  
        
        String imagePath = "icon/rdt_right.png";
        
        bmp = BitmapUtils.getLoacalBitmapByAssets(LoginIndexActivity.this, imagePath);                
        ListView listView = getListView();	//加载setCOntentView 里面的 @android:id/list
        MyListAdapter adapter = new MyListAdapter(LoginIndexActivity.this, getData());
        listView.setAdapter(adapter);  
        
        ///////设置 点击事件
        listView.setOnItemClickListener(new OnItemClickListener() {  
            public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,  
                    long arg3) {  
                // TODO Auto-generated method stub  
                setTitle("点击第"+arg2+"个项目");  
            }  
        });  
   
    }

    
	 private List<Commentinfo> getData(){  
		   ArrayList<Commentinfo> arrayList = new ArrayList<Commentinfo>();  
        for(int i=0;i<10;i++){ 
            arrayList.add(new Commentinfo(bmp, "用户"+i));  
        }  
        return arrayList;  
          
     }  
	 
	 
	 
	 
    

   
}