生物识别与震动 (Biometrics)

1. 触感反馈 (Haptics)

在 Compose 中，你可以通过 LocalHapticFeedback 轻松触发系统触感。

@Composable
fun HapticSample() {
    val haptics = LocalHapticFeedback.current

    Column(verticalArrangement = Arrangement.spacedBy(8.dp)) {
        Button(onClick = {
            // 长按触感
            haptics.performHapticFeedback(HapticFeedbackType.LongPress)
        }) {
            Text("长按震动")
        }

        Button(onClick = {
            // 文本处理触感 (轻微)
            haptics.performHapticFeedback(HapticFeedbackType.TextHandleMove)
        }) {
            Text("轻微震动")
        }
    }
}

2. 生物识别 (Biometrics)

使用 AndroidX Biometric 库实现指纹/面容登录。

依赖

implementation("androidx.biometric:biometric:1.1.0")

封装 BiometricPrompt

@Composable
fun BiometricAuthScreen(onAuthSuccess: () -> Unit) {
    val context = LocalContext.current
    val activity = context as? FragmentActivity ?: return
    
    // 检查硬件是否可用
    val biometricManager = BiometricManager.from(context)
    val canAuthenticate = biometricManager.canAuthenticate(
        BiometricManager.Authenticators.BIOMETRIC_STRONG
    ) == BiometricManager.BIOMETRIC_SUCCESS

    val executor = ContextCompat.getMainExecutor(context)
    
    val promptInfo = BiometricPrompt.PromptInfo.Builder()
        .setTitle("请验证身份")
        .setSubtitle("使用指纹或面容登录")
        .setNegativeButtonText("取消")
        .build()

    val biometricPrompt = remember {
        BiometricPrompt(
            activity,
            executor,
            object : BiometricPrompt.AuthenticationCallback() {
                override fun onAuthenticationSucceeded(result: BiometricPrompt.AuthenticationResult) {
                    super.onAuthenticationSucceeded(result)
                    onAuthSuccess()
                }

                override fun onAuthenticationError(errorCode: Int, errString: CharSequence) {
                    super.onAuthenticationError(errorCode, errString)
                    // 处理错误
                }
            }
        )
    }

    Button(
        onClick = { biometricPrompt.authenticate(promptInfo) },
        enabled = canAuthenticate
    ) {
        Text("生物识别登录")
    }
}