Develop Reference

I am creating a Browser App but Android won't detect my app in chooser while I click on any URL

I am creating a Browser app and I want Android to treat my app as a browser and show up in the app chooser to open with.
I want my app to show up in this list.
Here is my manifest Activity code:
<activity
android:name=".Activity.LinkDetectorActivity"
android:exported="true"
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>
<data android:scheme="testscheme" />
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.BROWSABLE" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>

Replace your intent-filter with below,
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<data android:scheme="http"/>
<category android:name="android.intent.category.DEFAULT" />
<!-- The BROWSABLE category is required to get links from web
pages. -->
<category android:name="android.intent.category.BROWSABLE" />
</intent-filter>
</activity>

Try to change testcheme to "http" and "https"
<activity
android:name=".Activity.LinkDetectorActivity"
android:exported="true"
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>
<data android:scheme="http" />
<data android:scheme="https" />
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.BROWSABLE" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>

Why do I have to separate the <intent-filter> to show the "open" button on google play?

I have an app on GooglePlay, but the Open button is missing. It just says Uninstall.
This is my mainfest.xml:
<application
android:name=".preview_refresh"
android:allowBackup="true"
android:icon="#mipmap/ic_launcher_round"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".Login_Activity">
<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="www.url.com"
android:path="/launch"
android:scheme="https" />
</intent-filter>
</activity>
</application>
I figured out, the problem is:
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
But I have these lines in my code. When I remove:
<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.url.com"
android:path="/launch"
android:scheme="https" />
the open button is shown.
How can I fix it? I need these tags to open my app via link.
EDIT
I solved my problem, but now I have a new question:
Why do I have to separate the <intent-filter>? It's very confusing, because it shouldn't make any difference.

Ok, now I figured it out. The solution is to separate the <intent-filter>. Like this:
<activity android:name=".Login_Activity">
<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="www.urlk.com"
android:path="/launch"
android:scheme="https" />
</intent-filter>
</activity>

Open app when user visits url

My problem is that I set my manifest but visiting the website still just loads it in chrome and doesn't open the app. Here's my manifest code for the main activity:
<activity
android:name=".activity.MainActivity"
android:launchMode="singleTop"
android:screenOrientation="portrait">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<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:scheme="https" android:host="www.example.com" />
</intent-filter>
</activity>

My Android App is not showing on the App Drawer

I have an application with a single activity:
<activity android:name=".MainActivity"
android:label="#string/app_name"
android:screenOrientation="landscape"
android:launchMode="singleTask"
android:configChanges="mcc|mnc|locale|touchscreen|keyboard|keyboardHidden|navigation|orientation|screenLayout|uiMode|screenSize|smallestScreenSize|fontScale">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
<category android:name="com.google.intent.category.CARDBOARD" />
<data android:scheme="myscheme" android:host="action1"/>
<data android:scheme="myscheme" android:host="action2"/>
<data android:scheme="myscheme" android:host="action3"/>
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
</intent-filter>
<meta-data android:name="unityplayer.UnityActivity" android:value="true" />
</activity>
I need it to respond to myscheme:// urls, and it is working in that regard. Unfortunately, it does not show in my App Drawer. If I remove the android:scheme lines, then it shows on the App Drawer, but then it no longer responds to myscheme:// urls, obviously.
How can I fix this activity to make it both show on the app drawer and respond to the custom urls?

Try splitting the intent-filter into two:
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<intent-filter>
<category android:name="com.google.intent.category.CARDBOARD" />
<data android:scheme="myscheme" android:host="action1"/>
<data android:scheme="myscheme" android:host="action2"/>
<data android:scheme="myscheme" android:host="action3"/>
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
</intent-filter>

Android - url scheme does not work and application does not open

I want to run my app from a custom url.
I added the following to the AndroidManifest:
<activity android:name=".app.RunFromUrlActivity"
android:launchMode="singleInstance">
<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="myapp"/>
</intent-filter>
</activity>
However, when i try to go to myapp://data the browser simply searches fot that string instead of running my Activity.
What am i doing wrong?

Try something like this for "data":
<data
android:host="com.yourpackage.yourotherstuff.TheActivity"
android:scheme="yourscheme" />
Here's one that works for my app:
<activity android:name=".BrowserActivity" >
<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="com.mypackage.otherstuff.BrowserActivity"
android:scheme="myapp" />
</intent-filter>
</activity>
This makes my activity accessible via myapp://com.mypackage.otherstuff.BrowserActivity.