ios - 移动 iOS 后单击时按钮消失

Question

当我将我的按钮旋转到横向时，移动正确，但当我点击时，它们都消失了。有谁知道为什么？

UIButton *recordingButton = (UIButton *)[self.view viewWithTag:1];
CGRect frame1 = [recordingButton frame];
frame1.origin.x += 255;
frame1.origin.y -= 250;// change the location
[recordingButton setFrame:frame1];

UIButton *streamingButton = (UIButton *)[self.view viewWithTag:2];
CGRect frame2 = [streamingButton frame];
frame2.origin.x += 255;
frame2.origin.y -= 250;// change the location
[streamingButton setFrame:frame2];

UIButton *uploadButton = (UIButton *)[self.view viewWithTag:3];
CGRect frame3 = [uploadButton frame];
frame3.origin.x += 255;
frame3.origin.y -= 250;// change the location
[uploadButton setFrame:frame3];

Answer 1

这是因为您在 Storyboard中使用了自动布局。您不能更改使用自动布局约束定位的 View 的 frame；它是定位它的约束。使用约束(最好是 Storyboard中的约束)在代码中执行您在此处执行的操作。