Android的HTTP通信 XML解析和异步消息处理

核心提示：});Button btn4 = (Button) this.findViewById(R.id.btn4);// SAX - Simple API for XMLbtn4.setText("SAX 解析 XML");btn4.setOnClickListener(new Button.OnClic

});

Button btn4 = (Button) this.findViewById(R.id.btn4);

// SAX - Simple API for XML

btn4.setText("SAX 解析 XML");

btn4.setOnClickListener(new Button.OnClickListener() {

public void onClick(View v) {

SAXDemo();

}

});

}

// Android 调用 http 协议的 get 方法

// 本例：以 http 协议的 get 方法获取远程页面响应的内容

private void httpGetDemo(){

try {

// 模拟器测试时，请使用外网地址

URL url = new URL("http://xxx.xxx.xxx");

URLConnection con = url.openConnection();

String result = "http status code: " + ((HttpURLConnection)con).getResponseCode() + " ";

// HttpURLConnection.HTTP_OK

InputStream is = con.getInputStream();

BufferedInputStream bis = new BufferedInputStream(is);

ByteArrayBuffer bab = new ByteArrayBuffer(32);

int current = 0;

while ( (current = bis.read()) != -1 ){

bab.append((byte)current);

}

result += EncodingUtils.getString(bab.toByteArray(), HTTP.UTF_8);

bis.close();

is.close();

textView.setText(result);

} catch (Exception e) {

textView.setText(e.toString());

}

}

// Android 调用 http 协议的 post 方法

// 本例：以 http 协议的 post 方法向远程页面传递参数，并获取其响应的内容

private void httpPostDemo(){

try {

// 模拟器测试时，请使用外网地址

String url = "http://5billion.com.cn/post.php";

Map data = new HashMap();

data.put("name", "webabcd");

data.put("salary", "100");

DefaultHttpClient httpClient = new DefaultHttpClient();

HttpPost httpPost = new HttpPost(url);

ArrayList postData = new