If you look at Androidmanifest.xml
file, you will see this XML:
<?xml version="1.0" encoding="utf-8" standalone="no"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.microsoft.office.officelens" platformBuildVersionCode="21" platformBuildVersionName="5.0.1-1624448">
<uses-permission android:name="android.permission.CAMERA" android:required="true"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.GET_ACCOUNTS"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.AUTHENTICATE_ACCOUNTS"/>
<uses-permission android:name="android.permission.ACCESS_DOWNLOAD_MANAGER"/>
<uses-permission android:name="android.permission.DOWNLOAD_WITHOUT_NOTIFICATION"/>
<uses-permission android:name="android.permission.READ_CONTACTS"/>
<uses-permission android:name="android.permission.READ_PROFILE"/>
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
<uses-permission android:name="android.permission.RECEIVE_SMS"/>
<uses-feature android:name="android.hardware.camera" android:required="true"/>
<uses-feature android:name="android.hardware.camera.autofocus" android:required="false"/>
<application android:allowBackup="true" android:icon="@drawable/ic_officelens" android:label="@string/officelens_app_name" android:largeHeap="true" android:name="com.microsoft.office.officelens.OfficeLensApplication" android:theme="@style/OfficeLensAppTheme">
<activity android:label="@string/officelens_app_name" android:name="com.microsoft.office.apphost.LaunchActivity" android:theme="@style/OfficeLensSplashTheme">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
<activity android:configChanges="orientation|screenSize" android:label="@string/officelens_app_name" android:launchMode="singleTask" android:name="com.microsoft.office.officelens.MainActivity" android:theme="@style/FullscreenTheme"/>
<activity android:label="@string/officelens_app_name" android:name="com.microsoft.office.officelens.SecureActivity" android:parentActivityName="com.microsoft.office.officelens.MainActivity" android:windowSoftInputMode="stateHidden"/>
<activity android:label="@string/title_activity_settings" android:name="com.microsoft.office.officelens.SettingsActivity" android:parentActivityName="com.microsoft.office.officelens.MainActivity"/>
<activity android:configChanges="orientation|screenSize" android:label="" android:name="com.microsoft.office.officelens.AboutActivity" android:parentActivityName="com.microsoft.office.officelens.SettingsActivity"/>
<activity android:label="" android:name="com.microsoft.office.officelens.FirstRunActivity" android:parentActivityName="com.microsoft.office.officelens.MainActivity" android:screenOrientation="portrait" android:theme="@style/OfficeLensFirstRunTheme"/>
<activity android:label="@string/title_activity_section_picker" android:name="com.microsoft.onenote.pickerlib.OneNotePickerActivity" android:theme="@style/Theme.AppCompat.Light"/>
<activity android:exported="false" android:icon="@drawable/ms_logo" android:label="@string/webflow_header" android:name="com.microsoft.onlineid.authenticator.AccountAddPendingActivity" android:theme="@style/Theme.MSA"/>
<activity android:configChanges="orientation|screenSize" android:exported="false" android:icon="@drawable/ms_logo" android:label="@string/webflow_header" android:name="com.microsoft.onlineid.internal.ui.WebWizardActivity" android:theme="@style/Theme.MSA" android:windowSoftInputMode="adjustResize">
<intent-filter>
<action android:name="com.microsoft.onlineid.internal.SIGN_IN"/>
<action android:name="com.microsoft.onlineid.internal.RESOLVE_INTERRUPT"/>
<category android:name="android.intent.category.DEFAULT"/>
</intent-filter>
</activity>
<activity android:configChanges="orientation|screenSize" android:exported="false" android:icon="@drawable/ms_logo" android:label="@string/webflow_header" android:name="com.microsoft.onlineid.ui.AddAccountActivity" android:theme="@style/Theme.MSA" android:windowSoftInputMode="adjustResize">
<intent-filter>
<action android:name="com.microsoft.onlineid.internal.ADD_ACCOUNT"/>
<action android:name="com.microsoft.onlineid.internal.SIGN_UP_ACCOUNT"/>
<category android:name="android.intent.category.DEFAULT"/>
</intent-filter>
</activity>
<activity android:configChanges="orientation|screenSize" android:exported="false" android:name="com.microsoft.onlineid.ui.SignOutActivity" android:theme="@style/Theme.MSA.Transparent"/>
<activity android:exported="false" android:icon="@drawable/ms_logo" android:label="@string/webflow_header" android:name="com.microsoft.onlineid.internal.ui.AccountPickerActivity" android:theme="@style/Theme.MSA.Dialog">
<intent-filter>
<action android:name="com.microsoft.onlineid.internal.PICK_ACCOUNT"/>
<category android:name="android.intent.category.DEFAULT"/>
</intent-filter>
</activity>
<service android:exported="false" android:name="com.microsoft.onlineid.internal.MsaService">
<intent-filter>
<action android:name="com.microsoft.onlineid.internal.GET_TICKET"/>
<action android:name="com.microsoft.onlineid.internal.UPDATE_PROFILE"/>
<action android:name="com.microsoft.onlineid.internal.SIGN_OUT"/>
<action android:name="com.microsoft.onlineid.internal.SIGN_OUT_ALL_APPS"/>
<category android:name="android.intent.category.DEFAULT"/>
</intent-filter>
</service>
<service android:enabled="true" android:exported="false" android:name="com.microsoft.onlineid.sso.service.MsaSsoService">
<intent-filter>
<action android:name="com.microsoft.msa.action.SSO_SERVICE"/>
</intent-filter>
<meta-data android:name="com.microsoft.msa.service.sso_version" android:value="1"/>
<meta-data android:name="com.microsoft.msa.service.sdk_version" android:value="@string/sdk_version_name"/>
</service>
</application>
<uses-permission android:name="com.android.vending.CHECK_LICENSE"/>
<uses-permission android:name="android.permission.MANAGE_ACCOUNTS"/>
<uses-permission android:name="android.permission.USE_CREDENTIALS"/>
<uses-feature android:name="android.hardware.telephony" android:required="false"/>
</manifest>
If you read this file carefully you will see that this is impossible to interact this the other API's. Neither 'broadcast' no proper 'intent-filter' to interact this the other applications.
This is impossible nowadays.
Anyway, obviously, you can save to local storage and retrieve the data from SD card using your app.