Android Studio's Buildconfig class

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Android Studio Development, a module output packaged as a jar file, we will find that there is a buildconfig class, but throughout the development process we have never written this class, what is the matter?

Originally, the Buildconfig class is a class that is automatically generated according to the Build.gradle configuration file, a bit similar to R.class, and cannot be modified after it is generated. It has the following characteristics:

1. The position under ApplicationID (Application package name), such as

2, skillfully use the Build_type attribute for version viewing, debug attribute log control, and so on.

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1. LOG.D ("Com.emp.unionpay", Buildconfig.build_type);

Production Package Buildconfig.build_type = "Release";

Test Package Buildconfig.build_type = "Debug";

Log Output control:

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1. if (buildconfig.debug) {
2. LOG.D ("<span style=" font-family:arial, Helvetica, Sans-serif;" >com.emp.unionpay</span><span style= "font-family:arial, Helvetica, Sans-serif; ">", "I am a Debug");</span>
3. }

3. Customizing the contents of the Buildconfig class

The following code shows us how to add some of the values you want to buildconfig. To modify the Build.gradle file:

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2. Android {
6. Buildtypes {
8. Debug {
10. Buildconfigfield "String", "URL", "\" http://www.baidu.com/\ ""
12. Buildconfigfield "int", "money", " $"
14. }
16. Release {
18. Minifyenabled false
20. Proguardfiles getdefaultproguardfile (' proguard-android.txt '), ' Proguard-rules.txt '
22. }
24. }
26. }

We do this by entering the Buildconfigfield syntax in any type (including custom) in BuildType, which has three parameters Buildconfigfield (String type,string name,string Value), explained below:

String type	The type of field to create, such as the above string and int
String Name	The name of the field to create, such as base_url and date above
String value	Create a value for this field, such as \ "Http://www.baidu.com/\" above

But one thing to note here is that when you create a type of string, you need to be careful when you define value with a double quote "" that cannot be missing from the string, so we add an escape character when adding the type, because the argument itself is a string.

Android Studio's Buildconfig class