|
1、下载：
https://github.com/loopj/android-async-http
2、在工程中加入jar包，或直接把源文件加到工程中
AsyncHttp使用回调的方法处得请求的结果。
AsyncHttpClient client = new AsyncHttpClient();
client.get("http://www.google.com", new AsyncHttpResponseHandler() {
@Override
public void onSuccess(String response) {
System.out.println(response);
}
});
最好建一个静态的AsyncHttpClient
public class HttpUtil {
private static AsyncHttpClient client = new AsyncHttpClient(); // 实例话对象
static {
client.setTimeout(10000); // 设置链接超时，如果不设置，默认为10s
}
// 用一个完整url获取一个string对象
public static void get(String urlString, AsyncHttpResponseHandler res) {
client.get(urlString, res);
}
// url里面带参数
public static void get(String urlString, RequestParams params,
AsyncHttpResponseHandler res){
client.get(urlString, params, res);
}
// 不带参数，获取json对象或者数组
public static void get(String urlString, JsonHttpResponseHandler res) {
client.get(urlString, res);
}
// 带参数，获取json对象或者数组
public static void get(String urlString, RequestParams params,
JsonHttpResponseHandler res) {
client.get(urlString, params, res);
}
// 下载数据使用，会返回byte数据
public static void get(String uString, BinaryHttpResponseHandler bHandler) {
client.get(uString, bHandler);
}
public static AsyncHttpClient getClient(){
return client;
}
}
下载：
public void downloadClick(View view) {
String url = "http://f.hiphotos.baidu.com/album/w% 3D2048/sign=38c43ff7902397ddd6799f046dbab3b7/9c16fdfaaf51f3dee973bf7495eef01f3b2979d8.jpg";
HttpUtil.get(url, new BinaryHttpResponseHandler() {
@Override
public void onSuccess(byte[] arg0) {
super.onSuccess(arg0);
File file = Environment.getExternalStorageDirectory();
File file2 = new File(file, "cat");
file2.mkdir();
file2 = new File(file2, "cat.jpg");
try {
FileOutputStream oStream = new FileOutputStream(file2);
oStream.write(arg0);
oStream.flush();
oStream.close();
textView.setText("可爱的猫咪已经保存在sdcard里面");
} catch (Exception e) {
e.printStackTrace();
Log.i("hck", e.toString());
}
}
});
}
上传：
public void uploadClick(View view){
String path="http://10.0.2.2:8080/jsontest/servlet/UploadServlet";
File myFile = new File("/sdcard/cat/cat.jpg");
RequestParams params = new RequestParams();
try {
params.put("filename", myFile);
AsyncHttpClient client = new AsyncHttpClient();
client.post(path, params, new AsyncHttpResponseHandler(){
@Override
public void onSuccess(int statusCode, String content) {
super.onSuccess(statusCode, content);
Toast.makeText(MainActivity.this, "上传成功！", Toast.LENGTH_LONG).show();
}
});
} catch(FileNotFoundException e) {
}
}
| 
转播
