Question

运行应用程序时，为什么BuildConfig.DEBUG返回false？

我用它来控制日志，如下所示：

public static void d(String LOG_TAG, String msg){
    if(BuildConfig.DEBUG){
        Log.d(LOG_TAG,msg);
    }
}

Answer 1

检查类中的导入，确保使用正确的BuildConfig路径。您可以不使用应用程序中的BuildConfig，而是使用某些库。

Answer 2

在您的Android Studio 构建变体中，您是否使用调试变体？

对flavors或debug使用release时适用。

在调试模式下，BuildConfig.BUILD为真，在发布模式下，它为假。

Answer 3

如果该代码在库中，那么由于3-year-old bug in gradle，它总是错误的。

Answer 4

此问题有一种解决方法：

应用

import java.io.*; import java.util.Arrays; //import java.util.concurrent.TimeUnit; public class JavacTest { private static void printLines(String name, InputStream ins) throws Exception { String line; BufferedReader in = new BufferedReader(new InputStreamReader(ins)); while ((line = in.readLine()) != null) { System.out.println(name + " " + line); } } private static void runProcess(String command) throws Exception { Process pro = Runtime.getRuntime().exec(command); printLines(command + " stdin:", pro.getInputStream()); printLines(command + " stderr:", pro.getErrorStream()); //Take your time pro.waitFor(); System.out.println(command + " exitValue() " + pro.exitValue()); } private static void runProcess2(String [] command) throws Exception { Process pro = Runtime.getRuntime().exec(command); printLines(Arrays.toString(command) + " stdin:", pro.getInputStream()); printLines(Arrays.toString(command) + " stderr:", pro.getErrorStream()); //Take your time pro.waitFor(); System.out.println(Arrays.toString(command) + " exitValue() " + pro.exitValue()); } /* Note about paths: When NetBeans runs a .java program, the compiled class .class is put in a subfolder of build in the same folder of the project: build/classes/Programs. When a .java program is run with javac from inside another master .java program, the corresponding .class file is put in the same folder as the master .java program. */ public static void main(String[] args) { try { System.out.println("\nCompiling with javac: .java -> .class"); runProcess("/home/jose/jdk1.8.0_101/bin/javac " + " /home/jose/NetBeansProjects/eJVolu17P/src" + "/Programs/AddTwoIntegers.java"); //take your time //TimeUnit.SECONDS.sleep(1); System.out.println("\n\nShowing the bytecode " + "content of the .class file with javap"); runProcess("/home/jose/jdk1.8.0_101/bin/javap " + "-c /home/jose/NetBeansProjects/eJVolu17P/src" + "/Programs/AddTwoIntegers.class"); System.out.println("\n\nWorking Directory = " + System.getProperty("user.dir")); //TimeUnit.SECONDS.sleep(1); System.out.println("\n\nRunning the .class file with java"); String[] Commands = new String[4]; //Path to java Commands[0] = "/home/jose/jdk1.8.0_101/bin/java"; //Command: claspath Commands[1] = "-cp"; //Path to parent folder of package with the .java program = Programs Commands[2] = "/home/jose/NetBeansProjects/eJVolu17P/src/"; //Used package + name of compiled class without suffix .class Commands[3] = "Programs.AddTwoIntegers"; runProcess2(Commands ); } catch (Exception e) { } } }

<强>库

dependencies { releaseCompile project(path: ':library', configuration: 'release') debugCompile project(path: ':library', configuration: 'debug') }

Answer 5

也许并不理想，但我最终创造了自己的

    buildTypes {
    debug {
        buildConfigField "boolean", "IS_DEBUG", "true" // Had issues with BuildConfig.DEBUG, created IS_DEBUG to ensure functionality behaved as expected.
    }
    release {
        signingConfig signingConfigs.release
        buildConfigField "boolean", "IS_DEBUG", "false"
    }
}

然后以BuildConfig.IS_DEBUG编程方式解决它。

Answer 6

确保类顶部的build config自动导入语句属于您的项目。

com.your.package.name.BuildConfig

BuildConfig导入可能属于已发布的库，其中DEBUG为假。

Answer 7

请勿导入BuildConfig。这是一个自动生成的类，即使Android Studio会告诉您，也无需导入它。

如果Android Studio提示您导入BuildConfig，则可能是因为您需要进行初始Gradle构建来创建自动生成的类，该类最终在com.yourdomain.yourapp.BuildConfig中创建。升级Android Studio和Gradle或运行 Build-> Clean project 。

如果您导入另一个软件包的BuildConfig，那么它当然永远是错误的，因为它们仅发布其发行版本而不是其调试版本。

关于建议修改build.gradle的其他答案，我发现指定buildType与Android Studio的默认行为及其生成的BuildConfig冲突，并指出我有重复的条目。

从本质上说：