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updated readme

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Stanimir Karoserov
2014-05-13 16:46:29 +03:00
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UserPreferences/Readme.md
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Sample code: 
Used to store strings, booleans and numbers in built-in key/value store
Uses SharedPreferences on Android and NSUserDefaults on iOS
Sample code:
``` ```
// TODO: Add API usage UserPreferences.setBoolean("boolKey", false);
// TODO: We may think to expose an instance through the Application class - e.g. tk.ui.Application.userPreferences, like in Windows (Phone) 8. var bValue = UserPreferences.getBoolean("boolKey");
var sValue = UserPreferences.getString("noSuchStringKey", "No string value");
// will return "No string value" if there is no such value
var weHaveKey = UserPreferences.hasKey("boolKey");
if (weHaveKey) {
UserPreferences.remove("boolKey");
}
``` ```