首先,这是与Create circular reveal for pre-Lollipop devices (Android)不同的问题
我正在使用那里提到的库来创建Circular Reveal,但它似乎对我不起作用.
XML
JAVA
View myView = findViewById(R.id.circBack);
// get the center for the clipping circle
int cx = (myView.getLeft() + myView.getRight()) / 2;
int cy = (myView.getTop() + myView.getBottom()) / 2;
// get the final radius for the clipping circle
int finalRadius = Math.max(myView.getWidth(),myView.getHeight());
SupportAnimator animator = ViewAnimationUtils.createCircularReveal(myView,cx,cy,finalRadius);
animator.setInterpolator(new AccelerateDecelerateInterpolator());
animator.setDuration(1000);
myView.setVisibility(View.VISIBLE);
animator.start();
Logcat显示了这一点
07-01 19:15:47.498 27556-27556/com.ledo.ledoapp I/art﹕ Rejecting re-init on prevIoUsly-Failed class java.lang.ClassIoUsly-Failed class java.lang.ClassIoUsly-Failed class java.lang.ClassIoUsly-Failed class java.lang.ClassIoUsly-Failed class java.lang.Class502 27556-27556/com.ledo.ledoapp I/art﹕ Rejecting re-init on prevIoUsly-Failed class java.lang.Class502 27556-27556/com.ledo.ledoapp I/art﹕ Rejecting re-init on prevIoUsly-Failed class java.lang.Class502 27556-27556/com.ledo.ledoapp I/art﹕ Rejecting re-init on prevIoUsly-Failed class java.lang.ClassIoUsly-Failed class java.lang.ClassIoUsly-Failed class java.lang.ClassIoUsly-Failed class java.lang.Class 但是,如果将视图设置为在XML文件中可见,则圆形显示确实有效,但问题是如果我将视图“circBack”设置为在XML中可见,它从应用程序启动时开始显示,这通常是.
最佳答案
看起来你正在“Gone”视图中初始化这个动画？
尝试获得视图的可见性,并确保在内部运行它
if (mView.getVisibility() == View.VISIBLE)
{
..
..
anim.start();
}
代码块.
