Android™

Send UTF-16 on TCP or TLS Socket

See more Socket/SSL/TLS Examples

Demonstrates how to send a string on a connected TCP or SSL/TLS socket such that it is the utf-16 byte representation that is sent. Android™

// Important: Don't forget to include the call to System.loadLibrary
// as shown at the bottom of this code sample.
package com.test;

import android.app.Activity;
import com.chilkatsoft.*;

import android.widget.TextView;
import android.os.Bundle;

public class SimpleActivity extends Activity {

  private static final String TAG = "Chilkat";

  // Called when the activity is first created.
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    boolean success = false;

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkSocket socket = new CkSocket();

    boolean tls = false;
    int maxWaitMs = 20000;
    String domainOrIpAddr = "example.com";
    int port = 1234;

    // Connect to the whatever is expecting our connection...
    success = socket.Connect(domainOrIpAddr,port,tls,maxWaitMs);
    if (success != true) {
        Log.i(TAG, socket.lastErrorText());
        return;
        }

    // Let's say we have an XML file saved in the utf-16 byte representation,
    // and we want to send it over the connection using the utf-16 byte representation...

    // First the file into a Chilkat StringBuilder.
    // Tell the LoadFile method that we are reading utf-16 bytes..
    CkStringBuilder sbXml = new CkStringBuilder();
    success = sbXml.LoadFile("qa_data/xml/myUtf16.xml","utf-16");
    if (success != true) {
        Log.i(TAG, "Failed to load utf-16 XML file..");
        return;
        }

    // Tell the socket object that we wish to send the utf-16 byte representation of the string.
    socket.put_StringCharset("utf-16");

    // Send the string as utf-16 bytes.
    success = socket.SendSb(sbXml);
    if (success != true) {
        Log.i(TAG, socket.lastErrorText());
        return;
        }

    // Let's say we wanted to instead send the string as utf-8 bytes.
    // Just tell the socket object...
    socket.put_StringCharset("utf-8");

    // Send the string as utf-8 bytes.
    success = socket.SendSb(sbXml);
    if (success != true) {
        Log.i(TAG, socket.lastErrorText());
        return;
        }

    // If our XML file was utf-8, then just tell the StringBuilder that we're reading utf-8.
    // Once the text is properly contained in the StringBuilder, we can send the contents in any other charset (windows-1252, utf-16, utf-8, etc.) 
    // as long as it make sense (i.e. we obviously can't send Japanese text using a single-byte charset such as Windows-1252).
    success = sbXml.LoadFile("qa_data/xml/myUtf8.xml","utf-8");
    if (success != true) {
        Log.i(TAG, "Failed to load utf-8 XML file..");
        return;
        }

    // Send as utf-16
    socket.put_StringCharset("utf-16");

    // Send the string as utf-16 bytes.
    success = socket.SendSb(sbXml);
    if (success != true) {
        Log.i(TAG, socket.lastErrorText());
        return;
        }

    // ...
    // ...

  }

  static {
      System.loadLibrary("chilkat");

      // Note: If the incorrect library name is passed to System.loadLibrary,
      // then you will see the following error message at application startup:
      //"The application <your-application-name> has stopped unexpectedly. Please try again."
  }
}