Show arrow rotation animation when showing. Then dismiss method will be called automatically before activity or fragment would be tLifecycleOwner(lifecycleOwner) So we can solve the memory leak issue so easily. have memory leak issue if not dismissed before activity or fragment are destroyed.īut Lifecycles are now integrated with the Support Library since Architecture Components 1.0 Stable released. To define the selection event handler for a spinner, implement the AdapterView.OnItemSelectedListener interface and the corresponding onItemSelected() callback method.A lightweight dropdown popup spinner with an arrow and animations.Īdd below codes to your root adle file (not your module adle file). When the user selects an item from the drop-down, the Spinner object
The layout the adapter should use to display the list of spinner choices ( simple_spinner_dropdown_item is another standard layout defined by theĬall setAdapter() to apply the adapter to your
You should then call setDropDownViewResource(int) to specify Platform and is the default layout you should use unless you'd like to define your own layout The simple_spinner_item layout is provided by the This method is a layout resource that defines how the selected choice appears in the You to create an ArrayAdapter from the string array. R.anets_array, android.R.layout.simple_spinner_item) ĪtDropDownViewResource(android.R.layout.simple_spinner_dropdown_item) Spinner spinner = (Spinner) findViewById(R.id.spinner) ĪrrayAdapter adapter = ArrayAdapter.createFromResource(this, Specify the layout to use when the list of choices appearsĪtDropDownViewResource(android.R.layout.simple_spinner_dropdown_item) Create an ArrayAdapter using the string array and a default spinner layout
Val spinner: Spinner = findViewById(R.id.spinner) With an array such as this one, you can use the following code in your Activity or Fragment to supply the spinner with the array using Them with a string array defined in a string The choices you provide for the spinner can come from any source, but must be provided throughĪn SpinnerAdapter, such as an ArrayAdapter if theĬhoices are available in an array or a CursorAdapter if the choices areįor instance, if the available choices for your spinner are pre-determined, you can provide To populate the spinner with a list of choices, you then need to specify a SpinnerAdapter in your Activity or Fragment Should usually do so in your XML layout with a element. You can add a spinner to your layout with the Spinner object. Touching the spinner displays a dropdown menu with all otherĪvailable values, from which the user can select a new one. Spinners provide a quick way to select one value from a set.
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