I am pretty new to this. I made 2 Activities. From Activity A I want to be able to open Activity B as a dialog window instead of it taking over the screen. I figured out how to make a dialog, but it seems its functionality needs to be programmed into the same Activity Java file. I want to keep my code separate.
Is there a way to show a dialog window that contains another activity along with all of it's coded functionality?
In your AndroidManifest manifest file define your activity like this :
<activity android:theme="@android:style/Theme.Dialog"
android:excludeFromRecents="true" />
and If you want your activity to not be cancelable when the user clicks outside it just add the following line in your Activity.Java file inside onCreate method :
this.setFinishOnTouchOutside(false);
Try the following for the activity : In the activity,set the Theme by calling
setTheme(R.style.AppTheme_DialogTheme)
and create a corresponding style :
<style name="AppTheme.DialogTheme"
parent="Base.Theme.AppCompat.Light.Dialog.FixedSize">
<!-- removing the dialog's action bar -->
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
<item name="windowFixedHeightMajor">400dp</item>
<item name="windowFixedHeightMinor">400dp</item>
</style>
Set you activity B theme from manifest.
<activity android:theme="@android:style/Theme.Dialog" />
Yes, you have to make some changes in the Manifest.
you can refer to this because your question has already been asked: