CODEWITHSUNDEEP
javaandroid
user9582784
user9582784

Reputation: 185

cannot cast Integer to Float

I want to store a float variable as SharedPreferences in my fragment. So I try to set it up and edit it later, but I get an error in the line verbrauch = prefsver.getFloat("key", 0); that the Integer cannot be cast to a Float variable, although I thought I‘m not even using an int there. Am I storing it a wrong way?

My code, it’s just a snipped so I hope I didn’t cut anything relevant:

public class ItemThreeFragment extends Fragment {

    TextView textView11;
    float verbrauch;

    public static ItemThreeFragment newInstance() {
        ItemThreeFragment fragment = new ItemThreeFragment();
        return fragment;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {

        final View view = inflater.inflate(R.layout.fragment_item_three, container, false);

        SharedPreferences prefsver = getActivity().getBaseContext().getSharedPreferences("myPrefsKeyv",
                Context.MODE_PRIVATE);
        verbrauch = prefsver.getFloat("key",0);

        Button button = (Button) view.findViewById(R.id.button);

        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

        final EditText et = (EditText) getActivity().findViewById(R.id.editText);
                String str = et.getText().toString();

        verbrauch = Float.valueOf(str);

                SharedPreferences prefsver = getActivity().getSharedPreferences("myPrefsKeyv",
                        Context.MODE_PRIVATE);
                prefsver.edit().putFloat("key", verbrauch)
                        .apply();
            }
        });
}

Upvotes: 1

Views: 1911

Answers (2)

Luke
Luke

Reputation: 1344

0 is an int literal - not a float. Use 0f (with a suffix), or cast explicitly as (float)0.

Edit:

Also check whether you're actually storing a float, e.g. there could be some leftover value. The method will try to cast what is stored in prefs as float, and in case the cast doesn't succeed, it throws ClassCastException.

Upvotes: 2

Headcracker
Headcracker

Reputation: 521

verbrauch = prefsver.getFloat("key",0F); would be correct. Note the F after the 0 that makes it a float.

Upvotes: 1

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