android 网络读取图片带进度条

package com.android;

import java.io.BufferedInputStream;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;
import android.app.Activity;
import android.app.ProgressDialog;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.widget.ImageView;
public class Loding extends Activity {
private static final int MESSAGETYPE_01 = 0x0001;
private ProgressDialog progressDialog = null;
private String strurl;
private ImageView imageView;
private Bitmap img;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.setContentView(R.layout.image);
imageView = (ImageView) findViewById(R.id.image);

strurl = "http://hiphotos.baidu.com/huyangdiy/pic/item/46dae2d2cac8796006088b3a.jpg";
progressDialog = ProgressDialog.show(Loding.this, "下载", "正在下载,请稍候！");

new Thread() {
public void run() {
try {
img = getImg(strurl);

} catch (Exception e) {

}

Message msg_listData = new Message();
msg_listData.what = MESSAGETYPE_01;
handler.sendMessage(msg_listData);
}
}.start();
}

private Handler handler = new Handler() {

public void handleMessage(Message message) {
switch (message.what) {
case MESSAGETYPE_01:
progressDialog.dismiss(); //关闭进度条
imageView.setImageBitmap(img);
break;
}
}
};

public Bitmap getImg(String strurl){
try{
URL url = new URL(strurl);
URLConnection conn = url.openConnection();
conn.connect();
InputStream in = conn.getInputStream();
BufferedInputStream bis= new BufferedInputStream(in);
Bitmap bitmap = BitmapFactory.decodeStream(bis);
in.close();
return bitmap;
}catch(Exception e){
return null;
}
}

}

更多相关文章

随机推荐

android 网络读取图片 带进度条

更多相关文章

随机推荐

android 网络读取图片带进度条