Toast
activity_main.xml <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="center" android:orientation="vertical" tools:context=".MainActivity"> <Button android:id="@+id/showToast" android:layout_width="121dp" android:layout_height="68dp" android:layout_gravity="center" android:background="@color/colorPrimary" android:text="Show Toast" android:textColor="#fff" /> </LinearLayout> MainActivit...