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Fix a retain cycle in the Objective-C platform_channel example (#22321)

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James D. Lin 2018-09-27 09:45:50 -07:00 committed by Dan Field
parent 7d47f04ddc
commit 1dc3e98af0
1 changed files with 2 additions and 1 deletions
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3
examples/platform_channel/ios/Runner/AppDelegate.m
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@ -19,10 +19,11 @@
FlutterMethodChannel* batteryChannel = [FlutterMethodChannel FlutterMethodChannel* batteryChannel = [FlutterMethodChannel
methodChannelWithName:@"samples.flutter.io/battery" methodChannelWithName:@"samples.flutter.io/battery"
binaryMessenger:controller]; binaryMessenger:controller];
__weak typeof(self) weakSelf = self;
[batteryChannel setMethodCallHandler:^(FlutterMethodCall* call, [batteryChannel setMethodCallHandler:^(FlutterMethodCall* call,
FlutterResult result) { FlutterResult result) {
if ([@"getBatteryLevel" isEqualToString:call.method]) { if ([@"getBatteryLevel" isEqualToString:call.method]) {
int batteryLevel = [self getBatteryLevel]; int batteryLevel = [weakSelf getBatteryLevel];
if (batteryLevel == -1) { if (batteryLevel == -1) {
result([FlutterError errorWithCode:@"UNAVAILABLE" result([FlutterError errorWithCode:@"UNAVAILABLE"
message:@"Battery info unavailable" message:@"Battery info unavailable"