錯誤寫法1

// ViewModel
@property (nonatomic, strong) UIViewController *controller;

// 在Viewcontroller中
@property (nonatomic, strong) VerityOtpViewModel *viewModel;

 self.viewModel.controller = self;

錯誤1.png

正確寫法1

// ViewModel
@property (nonatomic, weak) UIViewController *controller;

// 在Viewcontroller中
@property (nonatomic, strong) VerityOtpViewModel *viewModel;

 self.viewModel.controller = self;;

正確1.png

錯誤寫法2

[[_signInBtn rac_signalForControlEvents:UIControlEventTouchUpInside] subscribeNext:^(__kindof UIControl * _Nullable x) {
    [self.view endEditing:YES];
    self.viewModel.signInType = SignInTypeDictPassword;
}];

錯誤2.png

正確寫法2

@weakify(self);
[[_signInBtn rac_signalForControlEvents:UIControlEventTouchUpInside] subscribeNext:^(__kindof UIControl * _Nullable x) {
    @strongify(self);
    [self.view endEditing:YES];
    self.viewModel.signInType = SignInTypeDictPassword;
}];

正確2.png

錯誤寫法3

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    DeviceManagerCell *cell = [DeviceManagerCell cellWithTableView:tableView];
    cell.selectionStyle = UITableViewCellSelectionStyleNone;
    cell.queryTrustDeviceModel = self.deviceLists[indexPath.section];
    cell.deleteBlock = ^{
        QueryTrustDeviceModel *subModel = self.deviceLists[indexPath.section];
        [self deleteAlert:subModel.model andWithDeleteModel:subModel];
    };
    return cell;
}

錯誤3.png

正確寫法3

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    DeviceManagerCell *cell = [DeviceManagerCell cellWithTableView:tableView];
    cell.selectionStyle = UITableViewCellSelectionStyleNone;
    cell.queryTrustDeviceModel = self.deviceLists[indexPath.section];
    @weakify(self);
    cell.deleteBlock = ^{
        @strongify(self);
        QueryTrustDeviceModel *subModel = self.deviceLists[indexPath.section];
        [self deleteAlert:subModel.model andWithDeleteModel:subModel];
    };
    return cell;
}

正確3.png

錯誤寫法4

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    Cell *cell = [tableView dequeueReusableCellWithIdentifier:@"identifer"];
    @weakify(self);
    cell.clickItemBlock = ^(CellModel * _Nonnull model) {
        @strongify(self);
        [self didSelectRowMehod:model tableView:tableView];
    };
    return cell;
}

錯誤4.png

正確寫法4

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    Cell *cell = [tableView dequeueReusableCellWithIdentifier:@"identifer"];
    @weakify(self);
    @weakify(tableView);
    cell.clickItemBlock = ^(CellModel * _Nonnull model) {
        @strongify(self);
        @strongify(tableView);
        [self didSelectRowMehod:model tableView:tableView];
    };
    return cell;
}

正確4.png

錯誤寫法5

MRPinAlertConfig *config = [[MRPinAlertConfig alloc] init];
MRPinAlert *alert = [[MRPinAlert alloc] initWithConfig:config];
self.pinAlert = alert;
[alert show];
alert.pinBlock = ^(NSString * _Nonnull pin) {
    [self.pinAlert hide];
    self.viewModel.pin = pin;
    [self activateBiometryWithPin:pin];
};
alert.cancelBlock = ^{
    kStrongSelf(self)
    [self.tableView reloadData];
};
alert.forgotBlock = ^{
    kStrongSelf(self)
    [self.tableView reloadData];
};

錯誤5.png

正確寫法5

MRPinAlertConfig *config = [[MRPinAlertConfig alloc] init];
MRPinAlert *alert = [[MRPinAlert alloc] initWithConfig:config];
self.pinAlert = alert;
[alert show];
@weakify(self)
alert.pinBlock = ^(NSString * _Nonnull pin) {
    @strongify(self);
    [self.pinAlert hide];
    self.viewModel.pin = pin;
    [self activateBiometryWithPin:pin];
};
alert.cancelBlock = ^{
    kStrongSelf(self)
    [self.tableView reloadData];
};
alert.forgotBlock = ^{
    kStrongSelf(self)
    [self.tableView reloadData];
};

正確5.png

注意: 如果block未訪問self,不需要寫@weakify(self),kStrongSelf(self)否則會出現(xiàn)警告“Unused variable 'self'”