回调完成后如何执行原始方法？

Question

there are some problem when I develop my code. for ex)

a.java

public OnResultCallbackListener(){

part C

}


protected void onCreate(){

(skipped)
      button.setOnClickListener(){
            method a(arg0, arg1, arg2, ...., OnResultCallbackListener);
            --------------------------------
            part B
            --------------------------------
      }
}

I want to execute in this order. when I click button, method a executed. And method A will call callback(OnResultCallbackListener) and when OnResultCallbackListener finished(part C), code below method a executed(part B)

so, the order is method A - OnResultCallbackListener (part C) - part B. but my code executes part B first. OnResultCallbackListener needs server connection, so I cannot modify it.

in this situation, How can I execute my code in the way that I want?

Answer 1

Wrapper the callback listener with a compound listener.

public OnResultCallbackListener(){
    // part C
}
public CompoundCallbackListener(){
    OnResultCallbackListener();
    // part B
}

protected void onCreate() {
    // (skipped)
    button.setOnClickListener(){
        method a(arg0, arg1, arg2, ...., CompoundCallbackListener);
    }
}