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Layout Resource Notes[res -> values -> styles.xml && Menifests]

Basically in Android we are using Styles and themes for app design from the user interface structure and behavior, like cascade stylesheet in web development.

A style can specify attributes such as UI accentcolor and buttoncolor,textcolor, textsize, screen backgroundcolor,.we can call as a collection of attributes

A theme is a type of style that is applied to an entire app accentcolor change , activity, fragment and or view hierarchy, not just an individual view alone . When we apply our style as a theme, every view in the app or activity applies each style attribute supports for in application whole screen and particularly themes also apply styles to non-view elements.

<resources>

    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>

</resources>

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.androidfeeders.stylesandthemes">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

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Android Development and IOS Development & React Native Application

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