ERROR: Failed to resolve: com.github.yalantis:ucrop:2.2.2-native

解决方法，按照https://github.com/Yalantis/uCrop/issues/309

hello,
Did you add "maven { url "https://jitpack.io" }" within build.gradle?

allprojects {
  repositories {
    jcenter()
    maven { url "https://jitpack.io" }
   }
}