Android™

Enter/Leave Context in Logging

Demonstrates EnterContext and LeaveContext using the Chilkat Log API. 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);

    CkLog log = new CkLog();

    // Initialize the log object with an initial context tag:
    log.Clear("myLog");

    // Add some information..
    log.LogInfo("Hello, I'm here...");

    // Open a sub-context
    log.EnterContext("abc");

    // New information is now logged within the "abc" context.
    log.LogInfo("This is inside the abc context");
    log.LogError("File not found.");

    // Perhaps open a new context...
    log.EnterContext("fileInfo");
    log.LogData("filename","something.txt");
    log.LogData("path","/somedir/xyz");
    log.LeaveContext();

    // Close the "abc" context.
    log.LeaveContext();

    // Examine the content of the log:
    Log.i(TAG, log.lastErrorText());

    // This is the output:

    // myLog:
    //   Hello, I'm here...
    //   abc:
    //     This is inside the abc context
    //     File not found.
    //     fileInfo:
    //       filename: something.txt
    //       path: /somedir/xyz
    //     --fileInfo
    //   --abc
    // --myLog

  }

  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."
  }
}