12.3

今日收获：

wView.setDownloadListener(new DownloadListener(){
@Override
public void onDownloadStart(String url, String userAgent, String contentDisposition, 
    String mimetype, long contentLength) {
        Log.e("HEHE","开始下载");
        Uri uri = Uri.parse(url);
        Intent intent = new Intent(Intent.ACTION_VIEW,uri);
        startActivity(intent);
    }
});

我们自己另外写一个下载的线程类：

DownLoadThread.java

/**
* Created by Jay on 2015/9/14 0014.
*/
public class DownLoadThread implements Runnable {

private String dlUrl;

public DownLoadThread(String dlUrl) {
this.dlUrl = dlUrl;
}

@Override
public void run() {
Log.e("HEHE", "开始下载~~~~~");
InputStream in = null;
FileOutputStream fout = null;
try {
URL httpUrl = new URL(dlUrl);
HttpURLConnection conn = (HttpURLConnection) httpUrl.openConnection();
conn.setDoInput(true);
conn.setDoOutput(true);
in = conn.getInputStream();
File downloadFile, sdFile;
if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
Log.e("HEHE","SD卡可写");
downloadFile = Environment.getExternalStorageDirectory();
sdFile = new File(downloadFile, "csdn_client.apk");
fout = new FileOutputStream(sdFile);
}else{
Log.e("HEHE","SD卡不存在或者不可读写");
}
byte[] buffer = new byte[1024];
int len;
while ((len = in.read(buffer)) != -1) {
fout.write(buffer, 0, len);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
if (in != null) {
try {
in.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (fout != null) {
try {
fout.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
Log.e("HEHE", "下载完毕~~~~");
}
}