Question 131035 in Xcode Question posted in
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Xcode – how to share instance variable between class methods in objective c

So I was building a flutter native plugin. I have two method (in xyzPlugin.m) which looks like this

+ (void)registerWithRegistrar:(nonnull NSObject<FlutterPluginRegistrar> *)registrar {

and

- (void)handleMethodCall:(FlutterMethodCall *)call result:(FlutterResult)result {

Now, I want to share instance variable between both of them.

Suppose. I initialize meetingView like this inside registerWithRegistrar

 MeetingView *meetingView = [MeetingView new];

How can I use the same in handleMethodCall?

What have I tried?

@implementation xyzPlugin {
    MeetingView *_view;
}

and then in

- (void)handleMethodCall:(FlutterMethodCall *)call result:(FlutterResult)result {
    _view = [MeetingView new];

but this gives following error

Instance variable ‘_view’ accessed in class method

Tags:

2

Answers


  1. 0

    Maybe you need a global variable, so you can claim your object with a static keyword like:

    static MeetingView *_meetingView = ...

    then you can access this object in between class methods in Objective-C.

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  2. 0 
    + (instancetype)shared{
    static id obj;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        obj = [self new];
    });
    return obj;
}
// [MeetingView shared]...
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