CODEWITHSUNDEEP
android
John Baum
John Baum

Reputation: 3331

Access string resource by key

I am trying to use an xml resource file to store the mappings of certain values. Then, in my app, when i want to get their values, i would like a way to just access the values in the xml file by key. The problem is that I dont know the key beforehand. There is some logic that evaluates what key to get and then i have to get that key's value. For example:

    switch(id) {
       case 0:
         key = hello;
         break;
       case 1:
         key = world;
         break;
    }

Now i would like to access the value for these keys that i have stored in an xml file. How can i accomplish this? I dont want to use the SharedPreferences and i cant exactly use resources.getString(R.string. _ ) because i dont know the key beforehand.

Upvotes: 3

Views: 4210

Answers (2)

Ozzy
Ozzy

Reputation: 8312

Just use the R.id. within the switch, for example:

public String getStringById(id) {
    switch(id) {
       case 0:
         return getString(R.id.hello); break;
       case 1:
         return getString(R.id.world); break;
    }
}

But if you can't do it like that you could get the int id for the String like so:

int text_id = YourActivity.this.getResources()
    .getIdentifier("hello", "string", YourActivity.this.getPackageName());

So your code will now be like this:

String key = "";
switch(id) {
   case 0:
     key = hello;
     break;
   case 1:
     key = world;
     break;
}
int text_id = YourActivity.this.getResources()
    .getIdentifier(key, "string", YourActivity.this.getPackageName());
String text = YourActivity.this.getResources()
    .getString(text_id);
return text;

Upvotes: 4

Ariel Capozzoli
Ariel Capozzoli

Reputation: 795

if i understood correctly, you only have a String "key" to get the resources?

getResources().getString(
        getResources().getIdentifier(key, "string", getPackageName()))

Upvotes: 2

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