Change how to generate IDs

[cs-bruno-silva]

We're currently using String.hashCode() to parse a string to a int id, but it can produce errors since Ids can't be negative.

[brunodles]

The cause of this problem can be found on android sources, as we talked about.

This is the source code of findViewById method, explaining the reason why ids aren't negative.

public final View findViewById(int id) {
    if (id < 0) {
        return null;
    }
    return findViewTraversal(id);
}

https://android.googlesource.com/platform/frameworks/base/+/a175a5b/core/java/android/view/View.java#12583

[cs-matheus-candido]

Proposed solution: have an ArrayMap that will hold a String key (indicating the "resource id" name) and an Integer value holding the result of View.generateViewId(). The rest of the library can use this data structure to query the safe ids.