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>

Register Activity for specific kind of Data android

So, whenever any number is clicked in any application, default Dialer is opened with that number pre-filled.
How can i register my activity for similar thing?.
Where any click on number, will also list out my app and on selecting I get data of it?
Thanks.

add this intent filter to your 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.DIAL" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.CALL_BUTTON" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
</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:mimeType="vnd.android.cursor.dir/calls" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<action android:name="android.intent.action.DIAL" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data android:scheme="tel" />
</intent-filter>
and add this permissions
<uses-permission android:name="android.permission.CALL_PHONE" />
<uses-permission android:name="android.permission.CALL_PRIVILEGED" />
Credit

Application not visible in menu

I am working on an android Dialer My MainActivity's intent-filter is given bellow
<intent-filter>
<action android:name="android.intent.action.DIAL" />
<action android:name="android.intent.action.CALL_PRIVILEGED" />
<data android:scheme="tel" />
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
after adding these filters my application is not seeing in phone menu.
<action android:name="android.intent.action.DIAL" />
<action android:name="android.intent.action.CALL_PRIVILEGED" />
<data android:scheme="tel" />
please tell me why??

Try to separate your intent-filters in two:
<intent-filter>
<action android:name="android.intent.action.DIAL" />
<action android:name="android.intent.action.CALL_PRIVILEGED" />
<data android:scheme="tel" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
It seems Android considers your filters as one.

need a customised dialer layout in android

I need to develop a dialer for my android application. i need to develop an activity which uses the customised dialer.Can anybody help me out??

put this as intent filter of your activity
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<action android:name="android.intent.action.CALL_BUTTON" />
<action android:name="android.intent.action.DIAL" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<action android:name="android.intent.action.DIAL" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data android:scheme="tel" />
</intent-filter>

Using implicit intent to launch activity?

I have a problem using implicit intent to launch activity within my application.
I have created activities RecordList (lists all the albums), RecordEditor (used to add/edit tracks of record) and TrackEditor. I've managed to get the RecordEditor to launch when user selects new or edit from the RecordList. Problem occurs when I try to add new track to the the record (launch the TrackEditor activity).
Here is how I have defined the activities in manifest:
RecordList
<activity android:name="RecordList">
<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" />
<action android:name="android.intent.action.EDIT" />
<action android:name="android.intent.action.PICK" />
<data android:mimeType="vnd.android.cursor.item/vnd.example.record" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.GET_CONTENT" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="vnd.android.cursor.item/vnd.example.record" />
</intent-filter>
</activity>
RecordEditor
<intent-filter>
<action android:name="android.intent.action.GET_CONTENT" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="vnd.android.cursor.item/vnd.example.track" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<action android:name="android.intent.action.EDIT" />
<action android:name="com.example.records.action.EDIT_RECORD" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="vnd.android.cursor.item/vnd.example.record" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.INSERT" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="vnd.android.cursor.dir/vnd.example.record" />
</intent-filter>
TrackEditor
<activity android:name="TrackEditor">
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<action android:name="android.intent.action.EDIT" />
<action android:name="com.example.records.action.EDIT_TRACK" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="vnd.android.cursor.item/vnd.example.track" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.INSERT" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="vnd.android.cursor.dir/vnd.example.track" />
</intent-filter>
</activity>
And here is the exception I keep getting when trying to add new track to Record:
android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.intent.action.INSERT dat=content://com.example.provider.Track/tracks }
I've used the NotePad example as base for this but I am unable to figure out where I am doing wrong. Any help would be appreciated. :)

It is unclear what you think you are gaining from these "implicit Intents".
That being said, your problem is with your content provider. It is not indicating that the MIME type for content://com.example.provider.Track/tracks is any of those for which you support the INSERT action.