Android   收集索引贴

android标题栏(titlebar)显示进度条

http://www.oschina.net/code/snippet_163910_6192

1. [代码][Java]代码 1protected void onCreate(Bundle savedInstanceState) {2 super.onCreate(savedInstanceState);3 requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);//先给Activity注册界面进度条功能4 setContentView(R.layout.main);5 setProgressBarIndeterminateVisibility(true);//在需要显示进度条的时候调用这个方法6 setProgressBarIndeterminateVisibility(false);//在不需要显示进度条的时候调用这个方法7}

2. [图片] device.png

android有进度条的下载图片并且显示图片
http://blog.csdn.net/springsky_/article/details/7208956

1. URL u = new URL(url);
2. URLConnection conn = u.openConnection();
3. conn.connect();
4. InputStream is = conn.getInputStream();
5. fileSize = conn.getContentLength();
6. if(fileSize<1||is==null)
7. {
8. sendMessage(DOWNLOAD_ERROR);
9. }else{
10. sendMessage(DOWNLOAD_PREPARE);
11. FileOutputStream fos = new FileOutputStream(getPath());
12. byte[] bytes = new byte[1024];
13. int len = -1;
14. while((len = is.read(bytes))!=-1)
15. {
16. fos.write(bytes, 0, len);
17. downloadSize+=len;
18. sendMessage(DOWNLOAD_WORK);
19. }
20. sendMessage(DOWNLOAD_OK);
21. is.close();
22. fos.close();
23. }