使用Gradle自定义你的BuildConfig

通过 build.gradle 编译生成BuildConfig.java类

    buildTypes {
        debug {
            buildConfigField("boolean", "LOG_ENABLE", "true")
        }
        release {
            buildConfigField("boolean", "LOG_ENABLE", "false")
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
            signingConfig android.signingConfigs.release
        }
    }

其中, buildConfigField这行就是自定义的BuildConfig字段

项目编译后的BuildConfig类如下:

/**
 * Automatically generated file. DO NOT MODIFY
 */
package com.hola.weather;

public final class BuildConfig {
  public static final boolean DEBUG = Boolean.parseBoolean("true");
  public static final String APPLICATION_ID = "com.hola.weather";
  public static final String BUILD_TYPE = "debug";
  public static final String FLAVOR = "";
  public static final int VERSION_CODE = 10010000;
  public static final String VERSION_NAME = "1.0.0";
  // Fields from build type: debug
  public static final boolean LOG_ENABLE = true;
}

可见, 生成了自定义的"LOG_ENABLE"字段.

在需要判断是否是release版的位置这样使用

public class JLog {
    private static final boolean DEBUG = BuildConfig.LOG_ENABLE;
    ... ...
}

refer to:
http://blog.csdn.net/buaaroid/article/details/49496779