Android™

Keeping Query Params in a Hashtable

Demonstrates how to use a Chilkat Hashtable to hold query params and re-emit as a query param string.

Note: The ToQueryString method was added in Chilkat v9.5.0.92.

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;

    CkHashtable ht = new CkHashtable();

    // Add name/value pairs from an existing query param string where the values are already URL encoded.
    String qp = "txt=this%20is%20a%20test&color=blue&fruits=apples%26oranges";
    success = ht.AddQueryParams(qp);

    // Add some additional name/value pairs.
    ht.AddStr("name","Jack Sparrow");
    ht.AddStr("movie","Pirates of the Carribean");

    // Iterate over the hash table to show what we have..

    CkStringTable keys = new CkStringTable();
    ht.GetKeys(keys);
    int numKeys = keys.get_Count();
    String key;
    String val;
    int i = 0;
    while (i < numKeys) {
        key = keys.stringAt(i);
        val = ht.lookupStr(key);
        Log.i(TAG, key + " = " + val);
        i = i + 1;
        }

    // Output for the above loop:

    // color = blue
    // name = Jack Sparrow
    // fruits = apples&oranges
    // txt = this is a test
    // movie = Pirates of the Carribean

    // Get all name/value pairs as a query parm string with values URL encoded
    qp = ht.toQueryString();
    Log.i(TAG, qp);

    // Result:
    // color=blue&name=Jack%20Sparrow&fruits=apples%26oranges&txt=this%20is%20a%20test&movie=Pirates%20of%20the%20Carribean

  }

  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."
  }
}