弹出展示Presentation

alertalert

用于确认、错误提示和简短的重要反馈。Used for confirmations, errors, and short important feedback.

入门Beginner • 3 分钟3 min

更新于Updated Apr 22, 2026

重要反馈Critical Feedback

alert 应该只用于重要且需要用户留意的反馈，避免过度打断。Use alert only for important feedback that deserves interruption.

删除确认Delete Confirmation

swift

1@State private var showingAlert = false
2
3Button("Delete") {
4    showingAlert = true
5}
6.alert("Delete file?", isPresented: $showingAlert) {
7    Button("Cancel", role: .cancel) {}
8    Button("Delete", role: .destructive) {}
9}