Logger.java

package fr.prcaen.externalresources;

import android.support.annotation.IntDef;
import android.util.Log;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;

@SuppressWarnings("unused") public final class Logger {
  public static final int LEVEL_OFF = 0;
  public static final int LEVEL_ERROR = 1;
  public static final int LEVEL_WARN = 2;
  public static final int LEVEL_INFO = 3;
  public static final int LEVEL_DEBUG = 4;
  public static final int LEVEL_VERBOSE = 5;
  @Level private static int level = LEVEL_ERROR;

  @Retention(RetentionPolicy.SOURCE) @IntDef({
      LEVEL_OFF, LEVEL_ERROR, LEVEL_WARN, LEVEL_INFO, LEVEL_DEBUG, LEVEL_VERBOSE
  }) public @interface Level {
  }

  public static void v(String tag, String msg) {
    if (level == LEVEL_VERBOSE) {
      Log.v(tag, msg);
    }
  }

  public static void d(String tag, String msg) {
    if (level >= LEVEL_DEBUG) {
      Log.d(tag, msg);
    }
  }

  public static void i(String tag, String msg) {
    if (level >= LEVEL_INFO) {
      Log.i(tag, msg);
    }
  }

  public static void w(String tag, String msg) {
    if (level >= LEVEL_WARN) {
      Log.w(tag, msg);
    }
  }

  public static void e(String tag, String msg) {
    if (level >= LEVEL_ERROR) {
      Log.e(tag, msg);
    }
  }

  public static void e(String tag, String msg, Throwable tr) {
    if (level >= LEVEL_ERROR) {
      Log.e(tag, msg, tr);
    }
  }

  @Level public static int getLevel() {
    return level;
  }

  public static void setLevel(@Level int level) {
    Logger.level = level;
  }
}