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When you want to show the floating window while on the Activity, you can use the following code:
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```kotlin
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val floatingWindow =ComposeFloatingWindow(applicationContext)
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floatingWindow.show()
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```
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> See [Sample App](https://github.com/only52607/compose-floating-window/tree/master/app).
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## Advanced Usage
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### Make Floating Window Draggable
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Use the `Modifier.dragFloatingWindow()` modifier on the component you want to make draggable. Example:
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```kotlin
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FloatingActionButton(
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modifier =Modifier.dragFloatingWindow()
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) {
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Icon(Icons.Filled.Call, "Call")
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}
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```
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### Get the current instance of `ComposeFloatingWindow`
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### Service
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Using LocalComposeFloatingWindow to retrieve, here's an example:
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When you want to show the floating window while on the Service, you can use the following code:
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```kotlin
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val floatingWindow =LocalComposeFloatingWindow.current
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```
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### Show Dialog
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When the Context of the floating window is set to Application, using AlertDialog and Dialog in the Compose interface of the floating window may result in a 'token is null' exception. In such cases, you can use the SystemAlertDialog or SystemDialog components, which can be used in the same way as the built-in AlertDialog and Dialog components.
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Example：
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```kotlin
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SystemAlertDialog(
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onDismissRequest = { showDialog =false },
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confirmButton = {
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TextButton(onClick = { showDialog =false }) {
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Text(text ="OK")
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}
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},
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text = {
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Text(text ="This is a system dialog")
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val floatingWindow =ComposeServiceFloatingWindow(applicationContext)
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floatingWindow.setContent {
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FloatingActionButton(
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modifier =Modifier.dragFloatingWindow(),
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onClick = {
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Log.i("")
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}) {
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Icon(Icons.Filled.Call, "Call")
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}
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)
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```
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### ViewModel
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You can access the ViewModel from any Composable by calling the viewModel() function.
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```kotlin
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classMyViewModel : ViewModel() { /*...*/ }
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@Composable
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funMyScreen(
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viewModel:MyViewModel = viewModel()
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) {
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// use viewModel here
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}
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floatingWindow.show()
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```
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> See https://developer.android.com/jetpack/compose/libraries#viewmodel
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