package butterknife;

import java.lang.annotation.Retention;
import java.lang.annotation.Target;

import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

@Retention(RUNTIME) @Target(FIELD)
public @interface InjectView {
  int value();
}

package butterknife;

import java.lang.annotation.Retention;
import java.lang.annotation.Target;

import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.RetentionPolicy.CLASS;

@Retention(CLASS) @Target(FIELD)
public @interface InjectView {
  int value();
}

Reduce the retention of the annotation to compile-time only.