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Intent

build an activity looks like a dialog, float over main activity or desktop

Create Transparent Theme

<?xml version="1.0" encoding="utf-8"?>
<resources><style name="Theme.TransparentActivity" parent="Theme.Material3.Light.NoActionBar"><item name="android:windowBackground">@color/transparent</item><item name="android:windowNoTitle">true</item><item name="android:windowIsTranslucent">true</item><item name="android:windowAnimationStyle">@android:style/Animation.Translucent</item></style>
</resources>

Apply Transparent Theme to Activity

<activityandroid:name=".viewlocator.DialogActivity"android:theme="@style/Theme.TransparentActivity" />

Make Activity Non-Fullscreen

class DialogActivity : AppCompatActivity() {private lateinit var binding: ActivityHomeBindingoverride fun onCreate(savedInstanceState: Bundle?) {super.onCreate(savedInstanceState)binding = ActivityHomeBinding.inflate(layoutInflater)setContentView(binding.root)}override fun onWindowFocusChanged(hasFocus: Boolean) {super.onWindowFocusChanged(hasFocus)if (hasFocus) {val lp = window.attributeslp.width = 500lp.height = 500lp.gravity = Gravity.CENTERwindow.attributes = lpwindow.setBackgroundDrawable(ColorDrawable(Color.TRANSPARENT))}}
}