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Function Type Specification for Headless Tasks, onFetch and onTimeout #228

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Function Type Specification for Headless Tasks, onFetch and onTimeout #228

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10 changes: 6 additions & 4 deletions lib/background_fetch.dart
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Original file line number Diff line number Diff line change
@@ -1,8 +1,8 @@
import 'dart:async';
import 'dart:ui';

import 'package:flutter/services.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';

const _PLUGIN_PATH = "com.transistorsoft/flutter_background_fetch";
const _METHOD_CHANNEL_NAME = "$_PLUGIN_PATH/methods";
Expand Down Expand Up @@ -418,8 +418,9 @@ class BackgroundFetch {
/// BackgroundFetch.finish(taskId);
/// })
/// ```
static Future<int> configure(BackgroundFetchConfig config, Function onFetch,
[Function? onTimeout]) {
static Future<int> configure(
BackgroundFetchConfig config, Function(String taskId) onFetch,
[Function(String taskId)? onTimeout]) {
if (_eventsFetch == null) {
_eventsFetch = _eventChannelTask.receiveBroadcastStream();
if (onTimeout == null) {
Expand Down Expand Up @@ -605,7 +606,8 @@ class BackgroundFetch {
/// }
/// ```
///
static Future<bool> registerHeadlessTask(Function callback) async {
static Future<bool> registerHeadlessTask(
Function(HeadlessTask task) callback) async {
Completer completer = Completer<bool>();

// Two callbacks: the provided headless-task + _headlessRegistrationCallback
Expand Down