Implementation of Android Network Communication
- 2021-07-22 11:18:18
- OfStack
There are two types of Android network programming: http protocol-based and socket-based.
Based on Http protocol: HttpClient, HttpURLConnection, AsyncHttpClient framework, etc.
Based on Socket:
(1) Socket, ServerSocket for TCP/IP
(2) DatagramSocket and DatagramPackage for UDP/IP
(3) Apache Mina Framework
1. Implementation of HttpURLConnection
String response = null;
Url url = new URL(path);
HttpURLConnection connection = (HttpURLConnection) url.openConnection(); // New Connection Instance
connection.setConnectTimeout(20000);// Set the connection timeout in milliseconds
//connection.setReadTimeout(20000);// Set the timeout for reading data in milliseconds
connection.setDoInput(true);// Do you want to open the input stream true|false
connection.setRequestMethod("POST");// Submission method POST|GET
//connection.setUseCaches(false);// Whether to cache true|false
//connection.setRequestProperty("accept", "*/*");
//connection.setRequestProperty("Connection", "Keep-Alive");
//connection.setRequestProperty("Charset", "UTF-8");
//connection.setRequestProperty("Content-Length", String.valueOf(data.length));
//connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
connection.connect();// Open the connection port
int responseCode = conn.getResponseCode();
BufferedReader reader = null;
if (responseCode == 200) {
reader = new BufferedReader(new InputStreamReader(connection.getInputStream(), "utf-8"));
StringBuffer buffer = new StringBuffer();
String line = "";
while ((line = reader.readLine()) != null) {
buffer.append(line);
}
response = buffer.toString();
} else {
response = " Return code: "+responseCode;
}
reader.close();
conn.disconnect();
2. Implementation of HttpClient
HttpResponse mHttpResponse = null;
HttpEntity mHttpEntity = null;
// Create HttpPost Object
//HttpPost httppost = new HttpPost(path);
// Settings httpPost Request parameter
//httppost.setEntity(new UrlEncodedFormEntity(params,HTTP.UTF_8));
HttpGet httpGet = new HttpGet(path);
HttpClient httpClient = new DefaultHttpClient();
InputStream inputStream = null;
BufferedReader bufReader = null;
String result = "";
// Send the request and get the response object
mHttpResponse = httpClient.execute(httpGet);// If it is " POST "The way is passed down httppost
if (mHttpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
// Get the message entity of the response
mHttpEntity = mHttpResponse.getEntity();
// Get 1 Input streams
inputStream = mHttpEntity.getContent();
bufReader = new BufferedReader(new InputStreamReader(inputStream));
String line = "";
while (null != (line = bufReader.readLine())) {
result += line;
}
//result = EntityUtils.toString(mHttpResponse.getEntity());
}
if (inputStream != null) {
inputStream.close();
}
bufReader.close();
if (httpClient != null) {
httpClient.getConnectionManager().shutdown();
}
3. Implementation of Practical AsyncHttpClient Framework
AsyncHttpClient client = new AsyncHttpClient();
client.get(url, new AsyncHttpResponseHandler() {
@Override
public void onSuccess(int i, Header[] headers, byte[] bytes) {
String response = new String(bytes, 0, bytes.length, "UTF-8");
}
@Override
public void onFailure(int i, Header[] headers, byte[] bytes, Throwable throwable) {
}
});
4. Use the WebView view component to display a Web page
myWebView.getSettings().setJavaScriptEnabled(true);
myWebView.setWebViewClient(new WebViewClient() {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
});
myWebView.loadUrl("http://"+networkAddress);
The above is the Android network communication in several ways of the whole content, I hope to help you learn.