PersistableBundle.java 文件源码

@RestrictTo(RestrictTo.Scope.LIBRARY)
@SuppressWarnings("unchecked")
public PersistableBundle(Map<String, ?> map, int depth) {
    if (depth <= 0) {
        this.map = new HashMap<>(0);
    } else {
        this.map = new HashMap<>(map);
        for (String key : this.map.keySet()) {
            Object object = this.map.get(key);
            if (object instanceof Map) {
                this.map.put(key, new PersistableBundle((Map<String, Object>) object, depth - 1));
            }
        }
    }
}