How to use SharedPreferences to save a URI, or any Storage?

Question

URI imageUri = null;

//Setting the Uri of aURL to imageUri.
try {
    imageUri = aURL.toURI();
} catch (URISyntaxException e1) {
    // TODO Auto-generated catch bl         


        

Answer 1

To get started using SharedPreferences for storage you'll need to have something like this in your onCreate():

SharedPreferences myPrefs = getSharedPreferences(myTag, 0);
SharedPreferences.Editor myPrefsEdit = myPrefs.edit();

I think you can do something like this to store it:

myPrefsEdit.putString("url", imageUri.toString());
myPrefsEdit.commit();

And then something like this to retrieve:

try {
    imageUri = URI.create(myPrefs.getString("url", "defaultString"));
} catch (IllegalArgumentException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}

Answer 2

To save the uri as a preference you first need to translate it to a string using the getPath() method. Then you can store it like this.

SharedPreferences pref = getSharedPreferences("whateveryouwant", MODE_PRIVATE);
SharedPreferences.Editor prefEditor = userSettings.edit();  
prefEditor.putString("key", uriString);  
prefEditor.commit();

Answer 3

You can just save a string representation of your URI.

SharedPreferences settings = getSharedPreferences(PREFS_NAME, 0);
SharedPreferences.Editor editor = settings.edit();
editor.putString("imageURI", imageUri.toString()); <-- toString()

Then use the Uri parse method to retrieve it.

SharedPreferences settings = getSharedPreferences(PREFS_NAME, 0);
String imageUriString = settings.getString("imageURI", null);
Uri imageUri = Uri.parse(imageUriString); <-- parse