Android topoche searchable spinner cannot cast error [closed]

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Error Message Inconvertible types; cannot cast ‘android.view.View’ to ‘com.toptoche.searchablespinnerlibrary.SearchableSpinner’

Answer

Spinner 1 is assigned to the wrong thing you have it assigned as a View not a spinner Easier way to do this,

Before your onCreate you do

Spinner spinnername; 

so then the spinner is available to call throughout the entire activity

Then under your your onCreate you do

spinnername=findViewById(R.id.nameofspinnerinxml);

And in your xml you must make your spinner something like this

  <com.toptoche.searchablespinnerlibrary.SearchableSpinner
    android:id="@+id/nameofspinnerinxml"
    style="@android:style/Widget.Holo.Light.Spinner"
    android:layout_width="match_parent"
    android:layout_height="51dp"
    tools:layout_editor_absoluteY="24dp" />

Adding a more complete example for you

Spinner spinner1;

    @TargetApi(Build.VERSION_CODES.N)
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_edit_project);

        spinner1=findViewById(R.id.spinnerid);

and then in the xml

  <com.toptoche.searchablespinnerlibrary.SearchableSpinner
    android:id="@+id/spinnerid"
    style="@android:style/Widget.Holo.Light.Spinner"
    android:layout_width="match_parent"
    android:layout_height="51dp"
    tools:layout_editor_absoluteY="24dp" />


Source: stackoverflow