Android 视图的形状变换
我想创建Android 视图的形状变换,android,android-animation,transformation,Android,Android Animation,Transformation,我想创建视图形状的变换动画。例如,将矩形更改为椭圆形。我尝试用与彩色动画相同的方法进行此操作: ColorDrawable[] color = {new ColorDrawable(Color.RED), new ColorDrawable(Color.BLUE), new ColorDrawable(Color.RED)}; TransitionDrawable drawable = new TransitionDrawable(color); drawable.startTransi
视图
形状的变换动画。例如,将矩形
更改为椭圆形
。我尝试用与彩色动画相同的方法进行此操作:
ColorDrawable[] color = {new ColorDrawable(Color.RED), new ColorDrawable(Color.BLUE), new ColorDrawable(Color.RED)};
TransitionDrawable drawable = new TransitionDrawable(color);
drawable.startTransition(1000);
image.setBackground(drawable);
但是当我尝试使用ShapeDrawable[]
时,我无法进行形状转换,但是imageView
变黑了
float[] outerR = new float[] {4, 4, 4, 4, 4, 4, 4, 4};
ShapeDrawable oval = new ShapeDrawable(new OvalShape());
ShapeDrawable rect = new ShapeDrawable(new RoundRectShape(outerR, null, null));
rect.setBounds(0,0,120,120);
oval.setBounds(0,0,120,120);
ShapeDrawable [] draws = {rect, oval};
TransitionDrawable drawable = new TransitionDrawable(draws);
drawable.startTransition(1000);
image.setBackground(drawable);
那么,Android中有没有任何编程方法可以平滑地转换(更改)
视图的形状?您可能想尝试Android.View.ViewAnimationUtils,但它只在api 19以上工作