Pop up dialog in Android home screen

Is it possible to show pop up dialog (AlertDialog) in home screen开发者_C百科 on the android device via services?

You could create an Activity with the Theme.Dialog theme. In your AndroidManifest.xml file add the theme to the activity, like this:

<activity android:name=".DialogActivity" android:theme="@android:style/Theme.Dialog"></activity>

From your service simply start this Activity. You will have to start the activity with the Intent.FLAG_ACTIVITY_NEW_TASK flag. See How to start an Activity from a Service

Does anyone needs option, "android:launchMode="singleInstance", when pop activity in the broadcast receiver or Service?? Without this option, my app started automatically and pop MyDialogActivity above it. And then, something happened wrong. (My app has the Main Activity with auto-login function. When the other new Activity started automatically, MyDialogActivity is hided by it.)

So, this is my sample xml code.

    <activity
        android:name=".MyDialogActivity"
        android:launchMode="singleInstance"
        android:screenOrientation="portrait"
        android:theme="@android:style/Theme.Dialog" />
    <activity

I hope someone needs my comments. :)

You can not create dialog from service but we have one alternative solution is that You can create dialog activity and start that activity from your service

You can set Theme of activity as dialog by below way

<activity android:name=".MyDialogActivity" android:theme="@android:style/Theme.Dialog"
        android:label="@string/app_name">
</activity>

Create CustomDialog As Activity

add to manifest

<activity android:name=".view.activity.CustomDialog"
        android:launchMode="singleInstance"
        android:screenOrientation="fullSensor"
        android:theme="@style/AlertDialogTheme"
        />

add Style AlertDialogTheme to style.xml

<style name="AlertDialogTheme" parent="Theme.MaterialComponents.Light.Dialog.Alert.Bridge">

</style>