Android Open Source - AndroidCloud Log Utils

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License

The source code is released under:
GNU General Public License
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Java Source Code

package com.twlkyao.utils;
/* www.  j  av a  2  s .c om*/
/** 
 * @author wangli
 * @editor Shiyao Qi
 * @date 2014.2.19
 * @email qishiyao2008@126.com
 */

public final class LogUtils {
  
  private boolean logEnabled; // Indicate whether to enable to log.
  
  private String tag; // The Log tag.
  
  /**
   * Constructor
   * @param LogEnabled
   * @param Tag
   */
  public LogUtils(boolean logEnabled, String tag){
    this.logEnabled = logEnabled;
    this.tag = tag;
  }
  
  private final String TAG_CONTENT_PRINT = "%s:%s.%s:%d"; // The format of log.
  
  private static StackTraceElement getCurrentStackTraceElement() {
    return Thread.currentThread().getStackTrace()[4];
  }
  
  /**
   * Print log.
   */
  public void trace() {
    if (logEnabled) {
      android.util.Log.d(tag,
          getContent(getCurrentStackTraceElement()));
    }
  }
  
  /**
   * Get log.
   * @param trace
   * @return
   */
  private String getContent(StackTraceElement trace) {
    return String.format(TAG_CONTENT_PRINT, tag,
        trace.getClassName(), trace.getMethodName(),
        trace.getLineNumber());
  }
  
  /**
   * Print default log.
   */
  public void traceStack() {
    if (logEnabled) {
      traceStack(tag, android.util.Log.ERROR);
    }
  }
  
  /**
   * Print the stack call info.
   * @param tag
   * @param priority
   */
  public void traceStack(String tag, int priority) {

    if (logEnabled) {
      StackTraceElement[] stackTrace = Thread.currentThread().getStackTrace();
      android.util.Log.println(priority, tag, stackTrace[4].toString());
      StringBuilder str = new StringBuilder();
      String prevClass = null;
      for (int i = 5; i < stackTrace.length; i++) {
        String className = stackTrace[i].getFileName();
        int idx = className.indexOf(".java");
        if (idx >= 0) {
          className = className.substring(0, idx);
        }
        if (prevClass == null || !prevClass.equals(className)) {
          str.append(className.substring(0, idx));  
        }
        prevClass = className;
        str.append(".").append(stackTrace[i].getMethodName())
        .append(":").append(stackTrace[i].getLineNumber())
        .append("->");
      }
      android.util.Log.println(priority, tag, str.toString());
    }
  }

  /**
   * Set tag and message.
   * @param tag
   * @param msg
   */
  public void d(String tag, String msg) {
    if (logEnabled) {
      android.util.Log.d(tag, getContent(getCurrentStackTraceElement()) + ">" + msg);
    }
  }
  /**
   * Use default tag and set message.
   * @param msg
   */
  public void d(String msg) {
    if (logEnabled) {
      android.util.Log.d(tag, getContent(getCurrentStackTraceElement()) + ">" + msg);
    }
  }

  /**
   * Set tag and message.
   * @param tag
   * @param msg
   */
  public void i(String tag,String msg){
    if (logEnabled) {
      android.util.Log.i(tag, getContent(getCurrentStackTraceElement()) + ">" + msg);
    }
  }
  
  /**
   * Use default tag and set message.
   * @param tag
   */
  public void i(String msg) {
    if(logEnabled) {
      android.util.Log.i(tag, getContent(getCurrentStackTraceElement()) + ">" + msg);
    }
  }
  
  /**
   * Set tag and message.
   * @param tag
   * @param msg
   */
  public void v(String tag,String msg){
    if (logEnabled) {
      android.util.Log.v(tag, getContent(getCurrentStackTraceElement()) + ">" + msg);
    }
  }
  
  /**
   * Use default tag and set message.
   * @param tag
   */
  public void v(String msg) {
    if(logEnabled) {
      android.util.Log.v(tag, getContent(getCurrentStackTraceElement()) + ">" + msg);
    }
  }
  
  /**
   * Set tag and message.
   * @param tag
   * @param msg
   */
  public void e(String tag,String msg){
    if (logEnabled) {
      android.util.Log.e(tag, getContent(getCurrentStackTraceElement()) + ">" + msg);
    }
  }
  
  /**
   * Use default tag and set message.
   * @param tag
   */
  public void e(String msg) {
    if(logEnabled) {
      android.util.Log.e(tag, getContent(getCurrentStackTraceElement()) + ">" + msg);
    }
  }
  
  /**
   * Set tag and message.
   * @param tag
   * @param msg
   */
  public void w(String tag,String msg){
    if (logEnabled) {
      android.util.Log.w(tag, getContent(getCurrentStackTraceElement()) + ">" + msg);
    }
  }
  
  /**
   * Use default tag and set message.
   * @param tag
   */
  public void w(String msg) {
    if(logEnabled) {
      android.util.Log.w(tag, getContent(getCurrentStackTraceElement()) + ">" + msg);
    }
  }
}
Java Source Code List
