feat: Add rememberFileSaverDialog

app/src/main/java/app/myzel394/locationtest/ui/utils/file.kt

@@ -0,0 +1,31 @@
+package app.myzel394.locationtest.ui.utils
+
+import androidx.activity.compose.rememberLauncherForActivityResult
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.platform.LocalContext
+import java.io.File
+
+@Composable
+fun rememberFileSaverDialog(mimeType: String): ((File) -> Unit) {
+    val context = LocalContext.current
+
+    var file: File? = null
+
+    val launcher = rememberLauncherForActivityResult(contract = ActivityResultContracts.CreateDocument(mimeType)) {
+        it?.let {
+            context.contentResolver.openOutputStream(it)?.use { outputStream ->
+                file!!.inputStream().use { inputStream ->
+                    inputStream.copyTo(outputStream)
+                }
+            }
+        }
+
+        file = null
+    }
+
+    return {
+        file = it
+        launcher.launch(it.name)
+    }
+}