android 简单实现获取网络图片

<?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" >

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="@string/imagePaht" 
     />
    <EditText 
        android:id="@+id/imagepath"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="http://10.0.2.2:8080/1.png"
        />
    
    <Button 
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/button"
        />
    
    <ImageView 
       android:id="@+id/imageView"
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
        />
</LinearLayout>

mainActivity

import java.io.InputStream;

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;

public class netImageActivity extends Activity {
    /** Called when the activity is first created. */
	private Button button = null;
	private EditText pathText;
	private ImageView imageView;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        pathText = (EditText) findViewById(R.id.imagepath);
       button = (Button) findViewById(R.id.button);
       imageView = (ImageView) findViewById(R.id.imageView);
        button.setOnClickListener(new OnClickListener()
		{
			
			public void onClick(View v)
			{
				// TODO Auto-generated method stub
				String path = pathText.getText().toString();
				Log.i("path", path);
				InputStream is;
				try
				{
					is = ImageService.getImage(path);  //获取图片数据流
					Bitmap bitMap = BitmapFactory.decodeStream(is);
					imageView.setImageBitmap(bitMap);
					
				}
				catch (Exception e)
				{
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
		});
        
    }
    
}

	public static InputStream getImage(String path) throws Exception
	{
		// TODO Auto-generated method stub
		URL url = new URL(path);
		 HttpURLConnection conn =   (HttpURLConnection) url.openConnection();
		
		conn.setConnectTimeout(5000);
		conn.setRequestMethod("GET");
		
		
		return conn.getInputStream();
	}