Android4.0加載網絡圖片

 <p>4.0系統加載網絡圖片不能發在主線程中運行,否則會報異常,用新開線程方法可以解決:</p>

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系統中顯示網絡圖片
*
* @author Administrator
*
*/
public class DownLoadImage extends AsyncTask<String, Void, Bitmap> {
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);
}
}

加載圖片方法:

String uriBaidu = "https://www.baidu.com/img/baidu_logo.gif";

new DownLoadImage((ImageView) findViewById(R.id.iv3)).execute(uriBaidu);