如果您使用的是Android Studio，请尝试利用gradle文件。

defaultConfig {
        applicationId "com.your.application.id"
        minSdkVersion 14
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"

        //Defining Log debugging
        buildConfigField "boolean", "LOG_DEBUG_MODE", "false"
        buildConfigField "boolean", "LOG_DEBUG_WITH_STACKTRACE_MODE", "false"
    }

    buildTypes {
        debug {
            testCoverageEnabled = "true"
            buildConfigField "boolean", "LOG_DEBUG_MODE", "true"
            buildConfigField "boolean", "LOG_DEBUG_WITH_STACKTRACE_MODE", "true"
        }

        release {
            minifyEnabled true
            shrinkResources true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }

只需使用静态变量debug，如下所示：

if(debug){
//do something
}

并在发布apk文件时将debug设置为false。
或者创建您自己的自定义日志方法：

public static void logInfo(String tag, String msg){
    if(DEBUG){
        Log.i(tag,msg);
    }
}

无论哪种方式，您都可以使用静态单一方法打印日志，如下所示：

/**
 * @param TAG
 * @param Message
 * @param LogType
 */
public static void Log(String TAG, String Message, int LogType) {
    switch (LogType) {
        // Case 1- To Show Message as Debug
        case 1:
            Log.d(TAG, Message);
            break;
        // Case 2- To Show Message as Error
        case 2:
            Log.e(TAG, Message);
            break;
        // Case 3- To Show Message as Information
        case 3:
            Log.i(TAG, Message);
            break;
        // Case 4- To Show Message as Verbose
        case 4:
            Log.v(TAG, Message);
            break;
        // Case 5- To Show Message as Assert
        case 5:
            Log.w(TAG, Message);
            break;
        // Case Default- To Show Message as System Print
        default:
            System.out.println(Message);
            break;
    }
}

public static void Log(String TAG, String Message) {
    AppDelegate.Log(TAG, Message, 1);
}

/* Function to show log for error message */
public static void LogD(String Message) {
    AppDelegate.Log(Tags.DATE, "" + Message, 1);
}

/* Function to show log for error message */
public static void LogDB(String Message) {
    AppDelegate.Log(Tags.DATABASE, "" + Message, 1);
}

/* Function to show log for error message */
public static void LogE(Exception e) {
    if (e != null) {
        AppDelegate.LogE(e.getMessage());
        e.printStackTrace();
    } else {
        AppDelegate.Log(Tags.ERROR, "exception object is also null.", 2);
    }
}

/* Function to show log for error message */
public static void LogE(OutOfMemoryError e) {
    if (e != null) {
        AppDelegate.LogE(e.getMessage());
        e.printStackTrace();
    } else {
        AppDelegate.Log(Tags.ERROR, "exception object is also null.", 2);
    }
}

/* Function to show log for error message */
public static void LogE(String message, Exception exception) {
    if (exception != null) {
        AppDelegate.LogE("from = " + message + " => "
                + exception.getMessage());
        exception.printStackTrace();
    } else {
        AppDelegate.Log(Tags.ERROR, "exception object is also null. at "
                + message, 2);
    }
}

/**
 * Funtion to log with tag RESULT, you need to just pass the message.
 *
 * @String Message = pass your message that you want to log.
 */
public static void LogR(String Message) {
    AppDelegate.Log(Tags.RESULT, "" + Message, 1);
}

/**
 * Funtion to log with tag RESULT, you need to just pass the message.
 *
 * @String Message = pass your message that you want to log.
 */
public static void LogI(String Message) {
    AppDelegate.Log(Tags.INTERNET, "" + Message, 1);
}

之后，你只需要为登录应用程序写：

AppDelegate.LogT("Hello for testing purpose");

当你不想显示日志的时候，就去AppDelegate类，注解掉日志行。就是这样。我希望你能理解。

你甚至可以使用Timber作为第三方库，你不需要每次都在类中声明TAG并设置它何时显示（Debug/Release）模式。

implementation 'com.jakewharton.timber:timber:4.7.1'

if (BuildConfig.DEBUG) {
    Timber.plant(new Timber.DebugTree());
}