Groovy and Gradle applications in Android

As we all know, the build of Android Studio is based on Gradle, and Gradle is based on groovy, groovy is Java-based

Android Studio's Gradle itself is based on groovy, so the environment is not built to say much.

Groovy Language Basics

1. Note: Use the same as Java//,/** **/

2. Groovy statements can end without semicolons

3. Supports dynamic types, that is, when declaring variables, you can specify no type

4. Function definition:

Def getchanneloption () {    return "XX"}

5. String Support:

The contents of single quotation marks strictly correspond to the string in Java and do not escape the $ symbol

def singlequote= ' I am $ Dolloar '  //output is I am $ dolloar

The content of the double quotation mark "" is a bit like that of the scripting language, and if there is a $ number in the character, then it evaluates the $ expression first.

   def doublequotewithoutdollar = "I am one dollar"//output I am one dollar   def x = 1   def doublequotewithdollar = "I am $x Dolloar "//Output I am 1 dolloar

Three quotes "' xxx ' in the string support arbitrary line breaks such as

   def multielines = "Begin line     1 line  2     End"

Finally, in addition to each line of code, there is no need to add parentheses to the function call in groovy. Like what:

println("test") ---> println "test"

Groovy and Gradle applications in Android