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When I add <data android:scheme="http" /> in AndroidManifest.xml, it causes my app not to be listed in the launcher anymore. Why?
AndroidManifest.xml without <data android:scheme="http" />:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.ebookfrenzy.mywebview" >
<uses-permission android:name="android.permission.INTERNET" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MyWebViewActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
AndroidManifest.xml with <data android:scheme="http" />:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.ebookfrenzy.mywebview" >
<uses-permission android:name="android.permission.INTERNET" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MyWebViewActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
<data android:scheme="http" />
</intent-filter>
</activity>
</application>
</manifest>
639
See also the Intent Filters section in the manifest file overview. attributes: android:scheme. The scheme part of a URI. This is the minimal essential attribute for specifying a URI; at least one scheme attribute must be set for the filter, or none of the other URI attributes are meaningful.
URL Schemes are an advanced configuration option used to define a non-standard link format that will only open in your app and not the device browser e.g. youruniquestring://yoursite.com/path This functionality is helpful in authentication redirect flows or for a more seamless user experience.
The root element of the AndroidManifest. xml file. It must contain an <application> element and specify xmlns:android and package attributes. Defines the Android namespace.
The file is located at WorkspaceName>/temp/<AppName>/build/luaandroid/dist. The manifest file provides essential information about your app to the Android operating system, and Google Play store. The Android manifest file helps to declare the permissions that an app must have to access data from other apps.
Due to the intent-filter matching/resolution process, when Android "shows the applications" in the launcher, it shows the list using matching mechanism, and when you add you app doesn't match, because the system doesn't bring any data when it displays the launcher.
The solution is create another intent-filter, for example:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.ebookfrenzy.mywebview" >
<uses-permission android:name="android.permission.INTERNET" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MyWebViewActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<data android:scheme="http" />
</intent-filter>
</activity>
</application>
</manifest>
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