Android:What is difference between setFlags and addFlags for intent

Question

What is difference between setFlags and addFlags for intent. Could any one explain it please. Help Appreciated.

Answer 1

 public Intent addFlags(int flags) {
    mFlags |= flags;
    return this;
}
public Intent setFlags(int flags) {
    mFlags = flags;
    return this;
}

Just found this from the source code,for reference.