Develop Reference

How to open specific app's specific activity clicking on an external link?

I am developing an android app, in which user must need to login first to use it's features. So as usual user must need to login using provided user credential.
But I don't want user always enter username and password again and again, so that I am just sharing a URL with user and if user click on shared link from anywhere in phone (via mail, or WhatsApp, or Facebook, etc.) phone must prompt to choose my app and app should automatically extract the URL and directly redirect the app to my Home Screen by hitting the login api if username and password are correct.
The shared url will be look like this - http://www.myurl.com/sso?username=Scb56745&password=!l0Aeu0yQazxssx
For now I have managed to prompt the dialog using this code in my AndroidManifest file -
<activity
android:name="com.my.par.activities.UserActivity"
android:label="#string/app_name"
android:screenOrientation="portrait"
android:windowSoftInputMode="stateHidden">
<intent-filter android:autoVerify="true" tools:targetApi="m">
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data
android:host="www.myurl.com"
android:path="/sso"
android:scheme="http" />
<data
android:host="www.yoururl.com"
android:path="/sso1"
android:scheme="https" />
</intent-filter>
</activity>
I am getting this clicked URL link in my UserAcitivity's on getIntent() method, like this -
Uri uri = getIntent().getData();
String path = uri.getPath();
So my real question is how to extract the username and password separately and so that I can call my login api by sending this username and password from this url (for ex. http://www.myurl.com/sso?username=Scb56745&password=!l0Aeu0yQazxssx). - Done
And how can I put a dynamic URL or host name, path and scheme in AndroidMenifest file? - Done
How can we force our app to always directly open the app,(don't need to show the chooser dialog) because no use of it even user click on browser nothing gonna happen.
Happy coding :-)

Karzel is also right but it's written in Kotlin, I believe you are expecting the solution for Java I'll answer the same in Java
Uri uri = getIntent().getData();
String strUsername = "", strPassword = "";
if (uri != null) {
strUsername = uri.getQueryParameter("username");
strPassword = uri.getQueryParameter("password");
}
else {
// Your app will pop up even if http://www.myurl.com/sso is clicked, so better to handle null uri
}
To answer your next part about dynamic URL, you can have multiple intent-filters for that purpose
<activity
android:name="com.my.par.activities.UserActivity"
android:label="#string/app_name"
android:screenOrientation="portrait"
android:windowSoftInputMode="stateHidden">
<intent-filter android:autoVerify="true" tools:targetApi="m">
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data
android:host="www.myurl.com"
android:path="/sso"
android:scheme="http" />
</intent-filter>
<intent-filter android:autoVerify="true" tools:targetApi="m">
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data
android:host="www.myurl.com"
android:path="/sso"
android:scheme="https" />
</intent-filter>
<intent-filter android:autoVerify="true" tools:targetApi="m">
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data
android:host="www.myurl.com"
android:path="/debug"
android:scheme="http" />
</intent-filter>
</activity>
and so on.
To open your app directly by clicking the link and not show a chooser dialog you'll have to use a custom URI, for example:
syn3sthete://myurl.com/sso?username=Scb56745&password=!l0Aeu0yQazxssx
You can change syn3sthete to any custom value you want.
Don't forget to add an intent-filter for your custom URI.
<intent-filter android:autoVerify="true" tools:targetApi="m">
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data
android:host="myurl.com"
android:path="/sso"
android:scheme="syn3sthete" />
</intent-filter>

Try using code like this :
fun getUsernameFromUrl(url: String): String? {
return Uri.parse(url).getQueryParameter("username")
}
fun getPasswordFromUrl(url: String): String? {
return Uri.parse(url).getQueryParameter("password")
}
And call it
val username = getUsernameFromUrl(path)
etc.
UPDATE:
The only "dynamic" way of adding URL I know is using something like this :
https://developer.android.com/studio/build/manifest-build-variables
you can change this URL depending on your Build Variant.
As is said here :
https://stackoverflow.com/a/43339476/8713068
you cannot update Android Manifest directly from code

Firebase dynamic link not opening/launching my installed app [duplicate]

I have developed an android app locally on my device (app not yet on android play store). I have the following logic to get deep link in MainActivity.
GoogleApiClient mGoogleApiClient = new GoogleApiClient.Builder(this)
.enableAutoManage(this, null)
.addApi(AppInvite.API)
.build();
// Check if this app was launched from a deep link. Setting autoLaunchDeepLink to true
// would automatically launch the deep link if one is found.
boolean autoLaunchDeepLink = false;
AppInvite.AppInviteApi.getInvitation(mGoogleApiClient, this, autoLaunchDeepLink)
.setResultCallback(
new ResultCallback<AppInviteInvitationResult>() {
#Override
public void onResult(#NonNull AppInviteInvitationResult result) {
if (result.getStatus().isSuccess()) {
// Extract deep link from Intent
Intent intent = result.getInvitationIntent();
String deepLink = AppInviteReferral.getDeepLink(intent);
Toast.makeText(getApplicationContext(), deepLink, Toast.LENGTH_LONG).show();
// Handle the deep link. For example, open the linked
// content, or apply promotional credit to the user's
// account.
// ...
} else {
Log.d(TAG, "getInvitation: no deep link found.");
}
}
});
I built some dynamic links using Firebase console and open in mobile browser. But it is not opening my app and reaching to line String deepLink = AppInviteReferral.getDeepLink(intent);
Instead it is opening the URL in mobile browser itself.
How to open the app and handle deep link in activity while using firebase dynamic link??
Edit:
I have intent filter in the manifest file.
<activity android:name="MainActivity"
android:label="#string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
<action android:name="android.intent.action.VIEW"/>
<category android:name="android.intent.category.DEFAULT"/>
<category android:name="android.intent.category.BROWSABLE"/>
<data android:host="example.com" android:scheme="http"/>
<data android:host="example.com" android:scheme="https"/>
</intent-filter>
</activity>

Action View and Action Main both are of different Intent category. So, you need to put them in different blocks like this:
<activity android:name=".DynamicLinkActivity">
<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:host="example.com"
android:scheme="http" />
<data
android:host="example.com"
android:scheme="https" />
</intent-filter>
</activity>

Alternatively, you could also provide the data in your intent-filter, like stated in the "regular" deep links doc (https://developer.android.com/training/app-indexing/deep-linking.html)
The intent filter would then look like the following :
<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:host="https://XXYYZZ42.app.goo.gl/" // <- Replace with your deep link from the console
android:scheme="https"/>
</intent-filter>
That said link can be obtained in your console, right here :
EDIT : Added the picture to show where to find this link

Update January 2019
Ensure that you have added the SHA256 certificate fingerprint for your app into your project in the Firebase console.
Add the below code in the AndroidManifest.xml under the activity which you want the dynamic link to lunch:
<intent-filter android:autoVerify="true">
<action android:name="android.intent.action.VIEW"/>
<category android:name="android.intent.category.DEFAULT"/>
<category android:name="android.intent.category.BROWSABLE"/>
<data android:host="mydomainname.page.link" android:scheme="http"/>
<data android:host="mydomainname.page.link" android:scheme="https"/>
</intent-filter>
Remove android:autoVerify="true" if you have Android 6.0 (API level 23) and below or the app will crash.

As explained in another answer, your intent filter seems to have some problems. Also your url may have some problems. When I was playing with those, I had created faulty URL to FireBase web site without noticing it. It is possible to test you code by opening the whole url in your app. I wrote all urls to be tested to an email and sent to myself, open in the device and started clicking. After that you can create the url you want in FireBase. Below are few examples (typos and other errors possible):
If you clicked this url on your device:
https://<myapp>.app.goo.gl/?link=https://mysite.fi/112972&apn=com.mydomain.myapp
and had this in you manifest:
<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="https"
android:host="mysite.fi"
android:pathPattern=".*" />
</intent-filter>
It should open https://mysite.fi/112972 in your app (com.mydomain.myapp) and if you opened the link on your PC, it would open https://mysite.fi/112972 in the browser.
If you opened this url in your device:
https://<myapp>.app.goo.gl/?link=https://mysite.fi/112972&apn=com.mydomain.myapp&al=myscheme://mydeeplink/112972&afl=http://fallback.fi
and had this in you manifest:
<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="myscheme"
android:host="mydeeplink"
android:pathPattern=".*" />
</intent-filter>
It would open myscheme://mydeeplink/112972 in your app (com.mydomain.myapp). You would need to have code for handling it. If the app is not installed, it would open http://fallback.fi in your browser. On the PC it would still open https://mysite.fi/112972.
(edit 19.3.2018) It seems that Firebase does not fully support 'al=' anymore. The code works, but it is missing from the documentation and Firebase console generated urls.

I had the same problem with deep links not working and the former answers wasn't helping. What did the trick was splitting the "data" tag like this:
Instead of:
<data android:host="example.com" android:scheme="http"/>
<data android:host="example.com" android:scheme="https"/>
Do this:
<data android:host="example.com"/>
<data android:scheme="http"/>
<data android:scheme="https"/>
Hope that will help anyone else :)

Android Deep Linking without android:scheme

I have a activity that apply intent filter to open deeplink, this is my intent filter :
<intent-filter android:autoVerify="true">
<category android:name="android.intent.category.DEFAULT" />
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.BROWSABLE" />
<data
android:host="www.example.com"
android:pathPattern="/..*"
android:scheme="https" />
</intent-filter>
my problem is, when user open a link i.e "www.example.com/somepage" from messaging apps e.g Hangout,Whatsapp, Android app chooser doesn't display may apps in its list, it just show all browser app in the options. But when user put "https://www.example.com/somepage" in a message then it works, Android show my app in its App chooser to open the link.
It also doesn't work When I try to remove android:scheme="https" from my intent filter.
is there anyone has same problem and have a solution?
Any help really appreciated.

This is expected behavior.
What the following snippet does is register your app as a handler for the URL scheme https://
<data
android:host="www.example.com"
android:pathPattern="/..*"
android:scheme="https" />
This means your app will be offered as an option for any link beginning with https:// and containing www.example.com. The string www.example.com/somepage doesn't qualify, as it is missing the https:// part.
You could try adding a second filter for http:// links. I'm not sure if Android automatically infers that as the scheme for web links without a scheme specified, so it's possible this could resolve the issue.
<intent-filter android:autoVerify="true">
<category android:name="android.intent.category.DEFAULT" />
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.BROWSABLE" />
<data
android:host="www.example.com"
android:pathPattern="/..*"
android:scheme="https" />
<data
android:host="www.example.com"
android:pathPattern="/..*"
android:scheme="http" />
</intent-filter>

Android deeplink two separate activities

I have two activities to deep link
One activity to link with follow url
http://abc.or/deals
Following is intent filter for it
<intent-filter>
<data
android:host="abc.or"
android:path="/deals"
android:scheme="http" />
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.BROWSABLE" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
Another activity with following url
http://abc.or/deals?category=Air+Conditioner-Refrigerator-
<intent-filter>
<data
android:host="abc.or"
android:path="/deals"
android:pathPattern="*deals/?category*"
android:scheme="http" />
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.BROWSABLE" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
But on clicking any of the url deep link is working for both activies which is the issue how I can fix this

Unfortunately, that won't be possible.
as the path is same in both the intent filters.
As an alternative, to have only one suggestion for the user,
Remove the intent filter from second activity
Parse the URI data fromintent.getDataString() in first activity and redirect the user to second activity on basis of this data.

Matching a URL to an Intent not working

I'm writing an Android app that accompanies a website and I wanted to make the app intercept certain URLs. I found multiple examples through Google and on SO but none of them work. I create my Intent:
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://xgn.nl/article/" + String.valueOf(id)));
and then launch it from another Activity (where i is the intent from above)
startActivity(i);
The intent filter for the activity that should receive this is:
<activity android:name=".ArticleActivity" android:theme="#style/XGN.Red">
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<data android:scheme="http" android:host="xgn.nl" android:pathPrefix="/article/" android:mimeType="text/*" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
</intent-filter>
</activity>
I also tried it without the mimeType in the filter. The intent resolver sees the filter but complains that the data does not match with the data in the intent and launches the browser instead.
What am I doing wrong?

I actually solved it 5s after I posted it, the problem was that you need to specify the fully qualified class name for this to work :)
<activity android:name="nl.xgn.ArticleActivity" android:theme="#style/XGN.Red">
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<data android:scheme="http" android:host="xgn.nl" android:pathPrefix="/article/" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
</intent-filter>
</activity>
EDIT: To be more precise, the error I was seeing in logcat was wrong. The data type did match, but it chose the more visible browser class over my lazily defined activity. Specifying the full class name and removing the mimeType made this work.