Launch App or Play Store by scanning QR code
Solution 1
You could create a URL which would be recognized by your app, and would open it automatically (you can declare these in your manifest). You could make that page display something like "Redirecting you to Google Play...", and then redirect in a few seconds.
So if they have the app installed, the URL would trigger opening it, if it is not opened, it would stay in the browser and redirect to Google Play.
Solution 2
This is the solution I've found for the same issue: 1. I've created a simple http landing-page with 2 badges, the 1st for Google-play android app and the 2nd for the Apple App Store app. (https://www.example.com/landingPage) 2. I've added the following lines in the manifest (as well described above):
<data android:scheme="https" android:host="www.example.com" android:pathPrefix="/landingPage" /> </intent-filter>
- I've generated a QrCode from the URL https://www.example.com/landingPage. You can eventually add some parameters at the end to handle in the App in the future (https://www.example.com/landingPage¶m1=value1 ecc.).
So, when you catch the QrCode for the first time, you are directed through the browser to the landing page and can choose the app to download and install. The coming times you catch the QrCode the device show you the app list to use to execute it and you will find there the app just installed. This works fine for me
Solution 3
you can through a html page
please note Android_URL like [scheme]://[host]/[path]?[query]
scheme：which App you want to start
host：note
path：key
query：Key and value
Android_URL = "myapp://www.test.com/openwith?uid=123";
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta content="telephone=no" name="format-detection" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0" />
<title>open or download App</title>
<script src="assets/plugins/jquery-1.8.3.min.js" type="text/javascript"></script>
</head>
<body>
<a id="vlink" onClick="try_to_open_app()" style="display:none"></a>
<script>
var browser={
versions:function(){
var u = navigator.userAgent, app = navigator.appVersion;
};
}()
}
var Android_URL = "myapp://www.test.com/openwith?uid=123";
function open_link() {
window.location=mtUrl;
}
function try_to_open_app() {
setTimeout('open_link()', 500);
}
//Android
else if(browser.versions.android){
document.getElementById("vlink").setAttribute("href",Android_URL);
document.getElementById("vlink").click();
}
else{
open_link();
}
</script>
</body>
</html>
**android**
<activity
android:name="net.laobanquan.im.splash.StartActivity"
android:launchMode="singleTop"
android:screenOrientation="portrait"
android:theme="@android:style/Theme.Black.NoTitleBar" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<!-- new in -->
<activity
android:name="net.test.WebStartActivity"
android:screenOrientation="portrait">
<intent-filter>
<action android:name="android.intent.action.VIEW"></action>
<category android:name="android.intent.category.DEFAULT"></category>
<category android:name="android.intent.category.BROWSABLE"></category>
<data android:scheme="myapp" android:host="www.test.com" android:path="/openwith"/>
</intent-filter>
</activity>
**activity**
String action = getIntent().getAction();
String uid = null;
if(Intent.ACTION_VIEW.equals(action)){
Uri uri = getIntent().getData();
if(uri != null){
uid = uri.getQueryParameter("uid");
}
}
Log.d(TAG, uid);
D. Müller
Updated on July 09, 2022Comments
-
D. Müller almost 2 years
I have an Android app with package name like
my.test.app. I want to generate a QR code, which:- If my app is installed: Open the app
- If not installed yet: Open the app page in PlayStore
Is there a possible way to do this, so that any Android QR scanner can handle the actions described above? I couldn't find an question/answer which realizes both... Thank you!
EDIT - What I did so far I added the following to my "App to open" manifest:
<application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:supportsRtl="true" android:theme="@style/AppTheme" android:exported="true" > <activity android:name=".MainActivity"> <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"/> <category android:name="android.intent.category.BROWSABLE"/> <data android:scheme="my.test.app"/> </intent-filter> </activity> ... </application>When I generate a QR code with content
my.test.app://testand scan it, the QR reader app shows the correct content, but won't open my app!2nd EDIT - Tried some URLs
I just tried to set a few other URLs in my Manifest's intent-filter:
<data android:scheme="http" android:host="play.google.com" android:pathPrefix="/store/apps/details?id=my.test.app"/>- this asks me whether to open the URL in browser or in PlayStore, if I scan the QR code with content
http://play.google.com/store/apps/details?id=my.test.app - BUT WON'T OPEN MY APP IF INSTALLED!
- this asks me whether to open the URL in browser or in PlayStore, if I scan the QR code with content
2.<data android:scheme="http" android:host="myapp.com" android:pathPrefix="/barcode"/>- this opens my app when scanning the QR code
http://myapp.com/barcode! BUT the problem would be, that there's no solution/target address when the app is not installed when scanning! A redirect via HTML site would be possible maybe, but I don't want to use a HTML server for this!