[android][error]cannot find symbol variable HttpStatus

[message]

Error:(23, 23) error: package org.apache.http does not exist

Error:(59, 35) error: cannot find symbol variable HttpStatus

where T is a type-variable:

T extends Object declared in class

[why]

compileSdkVersion : 23 ~

[solved]

app> build.gradle

android {

useLibrary  'org.apache.http.legacy' //insert this line

}