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LTMorphingLabel Swift4错误

[英]LTMorphingLabel Swift4 Error

我得到以下错误。

无法将类型“(_)->()”的值转换为预期的参数类型“ LTEmitterConfigureClosure?” (aka'可选<((CAEmitterLayer,CAEmitterCell)->()>')

我该如何解决?

self.emitterView.createEmitter(
                "fragments",
                particleName: "Fragment",
                duration: 0.6
                ) {_ in}.update { (layer, _) in
                    if progress > end {
                        layer.birthRate = 0
                    }
                }.play()

只需将尾随闭包{_ in}替换为configureClosure: nil

self.emitterView.createEmitter(
                "fragments",
                particleName: "Fragment",
                duration: 0.6,
                configureClosure: nil).update { (layer, _) in
                    if progress > end {
                        layer.birthRate = 0
                    }
                }.play()

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