向工具栏添加按钮并在单击时打开微调器

Question

I am new to android and I would like to know how to add a button to a toolBar and on Click of the button, I would like to open a Spinner.

Thanks

Answer 1

Since the spinner dropdown is not like the new LollyPop Design like Spinner:

So you need to add small code for the spinner control

android:dropDownVerticalOffset="-52dp" for Kitkat and below

android:dropDownVerticalOffset="0dp" for LollyPop

        <Spinner
        android:id="@+id/spinner_nav"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:dropDownVerticalOffset="@dimen/dropDownVerticalOffset" />

-> For more detail with example, visit the link :-

http://android-pratap.blogspot.in/2015/01/spinner-in-toolbar-example-in-android.html

Answer 2

its very easy Spinner before = (Spinner) findViewById(R.id.beforeSpinner); before.performClick();

it will open your spinner