AndroidManifest.xml

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

    <uses-permission android:name="android.permission.CAMERA" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.INTERNET" />

    <uses-feature
        android:name="android.hardware.camera"
        android:required="true" />

    <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=".splash.splashScreen"
            android:screenOrientation="portrait">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name=".register.advisorRegister"
            android:label="Advisor Registration"
            android:screenOrientation="portrait"
            android:theme="@style/AppTheme1" />
        <activity
            android:name=".register.studentRegister"
            android:label="Student Registration"
            android:screenOrientation="portrait"
            android:theme="@style/AppTheme1" />
        <activity
            android:name=".actionareas.userAreaActivity"
            android:screenOrientation="portrait"
            android:theme="@style/AppTheme1" />
        <activity
            android:name=".register.representativeRegister"
            android:label="Representative Registration"
            android:screenOrientation="portrait"
            android:theme="@style/AppTheme1" />
        <activity
            android:name=".actionareas.applyodActivity"
            android:label="Apply Leave"
            android:screenOrientation="portrait"
            android:theme="@style/AppTheme1" />
        <activity
            android:name=".recycler.odApproveActivity"
            android:label="Approve Leave"
            android:screenOrientation="portrait"
            android:theme="@style/AppTheme1" />
        <activity
            android:name=".actionareas.MainActivity"
            android:screenOrientation="portrait"
            android:theme="@style/AppTheme" />

        <provider
            android:name="android.support.v4.content.FileProvider"
            android:authorities="com.example.android.fileprovider"
            android:exported="false"
            android:grantUriPermissions="true">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"