Calling an activity inside a android library module

Question

I have an android library module and I'm trying to start an activity like

 Intent intent = new Intent(mContext, DetailsScreen.class); mContext.startActivity(intent);

I'm making above request inside the module and I have referenced the module in app gradle file like compile project(':myModule')

Also i have defined activity in Manifest file of both app module and in myModule like

 <activity android:name="com.test.mymodule.DetailsScreen" > <intent-filter> <action android:name="com.test.mymodule.DetailsScreen" /> <category android:name="android.intent.category.DEFAULT" /> </intent-filter> </activity>

But the activity which opens is an blank activity.

Can some one kindly explain me what's wrong I'm doing ?.

Thanks in advance :) :)

Sree Reddy Menon · Accepted Answer · 2016-02-19 14:28:23Z

2

you should mention only your library activity in app manifest. like how we include for facebook or other sdk activities. and start the activity with intent from your app. just try with removing activities from manifest. include only on app module.(package must be from library's )

edited Feb 19, 2016 at 14:28

answered Feb 19, 2016 at 14:10

Sree Reddy Menon

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2 Comments

Beginner Over a year ago

i'm trying to make a call inside the library.. starting an activity with in library. not from outside library.

Sree Reddy Menon Over a year ago

updated .please try with removing activities from library manifest and mention only on app manifest.

Teja · Accepted Answer · 2019-08-21 12:45:30Z

This ans is copied from siddhesh

We can use reflection to get class object.

Class.forName("com.mypackage.myMainActivity")

Add this code in Library project to call,

try { Intent myIntent = new Intent(this,Class.forName("com.mypackage.myMainActivity")); startActivity(myIntent ); } catch (ClassNotFoundException e) { e.printStackTrace(); }

"com.mypackage.myMainActivity" is the Activity present in Main project, that we need to call from its Library project.

Federico Picci · Accepted Answer · 2016-02-19 14:15:33Z

0

Right click on App module, then Open Module Settings, choose App from the left, and on the last tab add the Module dependecy to your lib (you don't need to edit gradle file this way, even if what you have in your gradle seems correct). Then, declare the activity you want to open only in the android manifest of the library module.

<activity android:name=".myLibActivity"/>

answered Feb 19, 2016 at 14:15

Federico Picci

1,11311 silver badges17 bronze badges

6 Comments

Beginner Over a year ago

i have added dependency the same way as u explained. I have tried declaring activity in library module only, but no luck .

Beginner Over a year ago

not getting any error, but the view is not getting drawn. only a blank screen is visible.. no views.

Federico Picci Over a year ago

try put a log into onCreate method of your activity to see if the code is reached. Maybe the layout is not linked.

Beginner Over a year ago

tried putting a toast message. but toast is not getting displayed.

Federico Picci Over a year ago

Try to log since you don't need a context this way. BTW, is the xml linked to the library in the module's layout?

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