Adapter for a spinner makes NullPointerException

Question

I made an array list in one of my value's folder, now when i want to adapt it to the spinner by retrieving it from the source folder it says NullPointerException:

 spinner = (Spinner) findViewById(R.id.spinner);

    ArrayAdapter adapter = ArrayAdapter.createFromResource(this,R.array.worker,android.R.layout.simple_list_item_1);
    spinner.setAdapter(adapter);
    spinner.setOnItemSelectedListener(this);

Messages in LogCat:

 Caused by: android.content.res.Resources$NotFoundException: String array resource ID #0x7f090001 at android.content.res.Resources.getStringArray(Resources.java:527) at com.example.hay.myapplication.UserCreatingActivity.onCreate(UserCreatingActivity‌.java:46) at android.app.Activity.performCreate(Activity.java:5990) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:227

Added my answer, it is probably related to not using a type for the Array Adapter and the layout type (check my modifications) — Lucas Crawford, Sep 18 '15 at 22:45
@LucasCrawford Caused by: android.content.res.Resources$NotFoundException: String array resource ID #0x7f090001 at android.content.res.Resources.getStringArray(Resources.java:527) at com.example.hay.myapplication.UserCreatingActivity.onCreate(UserCreatingActivity.java:46) at android.app.Activity.performCreate(Activity.java:5990) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:227 — Mika Izmylove, Sep 18 '15 at 22:48
@LucasCrawford מנהל אחראי משמרת צ׳קר מלצר טבח — Mika Izmylove, Sep 18 '15 at 22:53

Lucas Crawford · Answer 1 · 2015-09-18T22:53:32.810

0

Try giving the ArrayAdapter a type:

ArrayAdapter<String> adapter = ArrayAdapter.createFromResource(this, R.array.worker, android.R.layout.simple_spinner_item);

edited Sep 18 '15 at 22:53

answered Sep 18 '15 at 22:42

Lucas Crawford

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It still shows me a nullPointerExeption : Caused by: java.lang.NullPointerException: Attempt to get length of null array at android.content.res.AssetManager.getResourceTextArray(AssetManager.java:214) at android.content.res.Resources.getTextArray(Resources.java:503) at android.widget.ArrayAdapter.createFromResource(ArrayAdapter.java:430) at com.example.hay.myapplication.UserCreatingActivity.onCreate(UserCreatingActivity.java:45) at android.app.Activity.performCreate(Activity.java:5990) at – Mika Izmylove Sep 18 '15 at 22:44
I made another edit. Try that. Also link your R.array.worker – Lucas Crawford Sep 18 '15 at 22:48
מנהל אחראי משמרת צ׳קר מלצר טבח – Mika Izmylove Sep 18 '15 at 22:51

Distwo · Answer 2 · 2015-09-18T23:10:58.397

Try to flip the two last parameters in createFromRessource:

Replace:

ArrayAdapter adapter = ArrayAdapter.createFromResource(this,R.array.worker,android.R.layout.simple_list_item_1);

By:

ArrayAdapter<String> adapter = ArrayAdapter.createFromResource(this, android.R.layout.simple_list_item_1, R.array.worker);

In your code:

    spinner = (Spinner) findViewById(R.id.spinner);

    ArrayAdapter<String> adapter = ArrayAdapter.createFromResource(this, android.R.layout.simple_list_item_1, R.array.worker);
    spinner.setAdapter(adapter);
    spinner.setOnItemSelectedListener(this);

score 0 · Answer 3 · answered Sep 18 '15 at 23:08

since you have the exception:

 `Caused by: android.content.res.Resources$NotFoundException: String array resource ID #0x7f090001 at

I see that your problem is the last value inside the createFromResource() method:

 ArrayAdapter adapter = ArrayAdapter.createFromResource(this,R.array.worker,android.R.layout.simple_list_item_1);

the last value must be the array:

 ArrayAdapter adapter = ArrayAdapter.createFromResource(this,android.R.layout.simple_list_item_1,R.array.worker);

geeekfa · Answer 4 · 2018-06-25T12:58:03.353

-1

change

 attr.xml

Adapter for a spinner makes NullPointerException

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