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Android4.0加载网络图片

2016-06-22

  4 0系统加载网络图片不能发在主线程中运行,否则会报异常,用新开线程方法可以解决:

  4.0系统加载网络图片不能发在主线程中运行,否则会报异常,用新开线程方法可以解决:

package com.smalt.thread; 

import java.io.InputStream; 

import android.graphics.Bitmap; 
import android.graphics.BitmapFactory; 
import android.os.AsyncTask; 
import android.util.Log; 
import android.widget.ImageView; 

/** 
* 在4.0系统中显示网络图片 
* 
* @author Administrator 
* 
*/ 
public class DownLoadImage extends AsyncTask { 
ImageView imageView; 

public DownLoadImage(ImageView imageView) { 
// TODO Auto-generated constructor stub 
this.imageView = imageView; 
} 

@Override 
protected Bitmap doInBackground(String... urls) { 
// TODO Auto-generated method stub 
String url = urls[0]; 
Bitmap tmpBitmap = null; 
try { 
InputStream is = new java.net.URL(url).openStream(); 
tmpBitmap = BitmapFactory.decodeStream(is); 
} catch (Exception e) { 
e.printStackTrace(); 
Log.i("test", e.getMessage()); 
} 
return tmpBitmap; 
} 

@Override 
protected void onPostExecute(Bitmap result) { 
// TODO Auto-generated method stub 
imageView.setImageBitmap(result); 
} 
}
加载图片方法:
String uriBaidu = "https://www.baidu.com/img/baidu_logo.gif";
new DownLoadImage((ImageView) findViewById(R.id.iv3)).execute(uriBaidu);

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