如需检测用于平移、缩放和旋转的多点触控手势，您可以使用 transformable 修饰符。此修饰符本身不会转换元素，只会检测手势。
@Composable private fun TransformableSample() { // set up all transformation states var scale by remember { mutableFloatStateOf(1f) } var rotation by remember { mutableFloatStateOf(0f) } var offset by remember { mutableStateOf(Offset.Zero) } val state = rememberTransformableState { zoomChange, offsetChange, rotationChange -> scale *= zoomChange rotation += rotationChange offset += offsetChange } Box( Modifier // apply other transformations like rotation and zoom // on the pizza slice emoji .graphicsLayer( scaleX = scale, scaleY = scale, rotationZ = rotation, translationX = offset.x, translationY = offset.y ) // add transformable to listen to multitouch transformation events // after offset .transformable(state = state) .background(Color.Blue) .fillMaxSize() ) }
如果您需要将缩放、平移和旋转与其他手势结合使用，可以使用 PointerInputScope.detectTransformGestures 检测器。
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- 了解手势