1-) Android RMOS - dinamik background color change2

backgront_1.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item>
    <shape>
        <gradient
            android:angle="225"
            android:startColor="#e63946"
            android:endColor="#f1faee"
            />
    </shape>
</item>
</selector>

backgront_2.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item>
    <shape>
        <solid
            android:color="#e63946"
            />
    </shape>
</item>
</selector>

backgront_3.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item>
    <shape>
        <gradient
            android:angle="315"
            android:startColor="#1d3557"
            android:endColor="#e63946"
            />
    </shape>
</item>
</selector>

gradient_list.xml

<?xml version="1.0" encoding="utf-8"?>
<animation-list xmlns:android="http://schemas.android.com/apk/res/android">
<item
    android:drawable="@drawable/background_1"
    android:duration="1000"
    />
    <item
        android:drawable="@drawable/background_2"
        android:duration="1000"
        />
    <item
        android:drawable="@drawable/background_3"
        android:duration="1000"
        />
</animation-list>

fragment.xml

<LinearLayout
    android:id="@+id/lineartAnasayfa"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/gradient_list"
    android:orientation="vertical">

KULLANIMI :

public  void  dinamikArkaplan(){
    AnimationDrawable animationDrawable = (AnimationDrawable) linearAnasayfa.getBackground();
    animationDrawable.setEnterFadeDuration(1000);
    animationDrawable.setExitFadeDuration(1000);
    animationDrawable.start();
}

kaynak : https://www.youtube.com/watch?v=4lEnLTqsnaw&ab_channel=PracticalCoding