Android buttona tıklanma.. Önce xml sayfasına giderek button oluşturulur. <?xml version="1.0" encoding="utf-8"?> <RelativeLayout 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" tools:context=".Aktivity.GostermeActivity"> <com.google.android.material.button.MaterialButton android:id="@+id/ayarla" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="2" android:layout_margin="5dp" android:fontFamily="@font/abril_fatface" style="@style/Widget.MaterialComponents.TimePicker.ImageButton"