Create Instant app for existing application

Question

I have an application that I want to create an instantApp for it. I successfully apply changes to my project and it builds successfully.

But there is 2 problem: -I couldn't run the application and the error is:

Default Activity not found

And another problem is that when I run the instantApp I see an error message that says Google Play Store has stoped

I have an app and two Instant App Feature Module that are base and feature.

And these is my feature manifest:

<manifest xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools"
          package="instantapp.samples.yaramobile.com.base.feature">

    <application tools:ignore="GoogleAppIndexingWarning">

        <activity android:name=".presenter.MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>

                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>

            <intent-filter
                    android:autoVerify="true"
                    android:order="1">
                <action android:name="android.intent.action.VIEW"/>

                <category android:name="android.intent.category.BROWSABLE"/>
                <category android:name="android.intent.category.DEFAULT"/>

                <data android:host="test.com"/>
                <data android:pathPattern="/"/>
                <data android:scheme="https"/>
                <data android:scheme="http"/>
            </intent-filter>
        </activity>

        <activity android:name=".presenter.display.DisplayActivity"/>
        <activity android:name=".presenter.display.PermissionActivity"/>
    </application>
</manifest>

Regarding "Default Activity not Found", check out https://stackoverflow.com/questions/46862821, https://stackoverflow.com/questions/46120608 posts. — Julia K, Jan 16 '19 at 18:29
For your `Google Play Store has stopped` issue, it's best if you split this off to a new question, and you should provide a stacktrace from your logcat. — TWL, Jan 16 '19 at 19:07

score 1 · Accepted Answer · answered Jan 19 '19 at 09:59

I finally found the problems and solutions:

The problem was about AppCompact dependency:

implementation 'androidx.appcompat:appcompat:1.0.2'

there was a conflict and I had to use of api instead of implementation

api 'androidx.appcompat:appcompat:1.0.2'

and there was another conflict with room dependencies:

 implementation 'androidx.lifecycle:lifecycle-extensions:2.0.0'
 kapt 'androidx.lifecycle:lifecycle-compiler:2.0.0'
 implementation 'androidx.room:room-runtime:2.1.0-alpha02'
 kapt 'androidx.room:room-compiler:2.1.0-alpha02'

I had to replaced with api too:

 api 'androidx.lifecycle:lifecycle-extensions:2.0.0'
 kapt 'androidx.lifecycle:lifecycle-compiler:2.0.0'
 api 'androidx.room:room-runtime:2.1.0-alpha02'
 kapt 'androidx.room:room-compiler:2.1.0-alpha02'

Another problem was about databinding I Just added databinding in my base module but it's needed in installed module too:

  dataBinding{
        enabled = true
    }

and again is about room: I had to add a provider into the manifest of the base module because I had an error in merge manifest in my installed module because of these provider that is used in room dependencies:

<provider
        tools:replace="android:authorities"
        android:name="androidx.lifecycle.ProcessLifecycleOwnerInitializer"
        android:authorities="codenevisha.ir.mvvmwithdagger.base.lifecycle-process"
        android:exported="false"
        android:multiprocess="true"/>

don't forget to replace this provider with adding tools:replace="android:authorities"

Hope these guidelines will you too.

score 0 · Answer 2 · answered Jan 16 '19 at 16:27

Based from this thread, if you see that error occur after upgrading versions of IntelliJ IDEA or Android Studio, or after Generating a new APK, you may need to refresh the IDE's cache.

File -> Invalidate Caches / Restart...

It also means that you don't have an activity declared in AndroidManifest.xml that is marked as the main activity to be launched when the application starts.

Create Instant app for existing application

2 Answers2