CODEWITHSUNDEEP
androidhashmap
edi233
edi233

Reputation: 3031

Compare object to object from hash map in android

I have HashMap<Shop, String> shopMap where I put two values:

shopMap(shopModel1, shopModel1.getName());
shopMap(shopModel2, shopModel2.getName());

In my method for search shop by name I passed object of shop identical like shopModel1 to get his name:

public String getNameForShop(Shop filter) {
        return shopMap.get(filter);
    }

but I get null. Objects have the same all values. There is any way to get shop name from hash map using object?

Upvotes: 0

Views: 128

Answers (1)

Stoica Mircea
Stoica Mircea

Reputation: 782

It is not ok to have the object as key value. Map it by name.

I guess mapping by object, in fact, it happens with the object's memory address. Then you search in map for an object it doesn't compare objects fields, just the addresses.

HashMap<String, Shop> shopMap;
if( shopMap.get("shopname").equals(anotherShop) ){
    //do staff
}

Upvotes: 1

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