动画

1private async void ChangeImageScale(object sender, EventArgs e)
2{
3    imageScale = imageScale == 1 ? 2 : 1;
4    await PageImage.ScaleTo(imageScale);
5}

1private async void RotateImage(object sender, EventArgs e)
2{
3    await PageImage.RelRotateTo(180);
4}

1private async void TranslateImage(object sender, EventArgs e)
2{
3    translationCoordinates = translationCoordinates == 0 ? -100 : 0;
4    await PageImage.TranslateTo(translationCoordinates, translationCoordinates);
5}

1private async void FadeImage(object sender, EventArgs e)
2{
3    PageImage.Opacity = 0;
4    await PageImage.FadeTo(1, 2000);
5}

1private async void RotateAndScaleImage(object sender, EventArgs e)
2{
3    imageScale = imageScale == 1 ? 2 : 1;
4    PageImage.RelRotateTo(180);
5    await PageImage.ScaleTo(imageScale);
6}