sizeToFit在非常短的字符串周围放置填充

Question

我有一个UIButton，我在设置标题后调用@Override protected void onResume() { super.onResume(); camera = Camera.open(0); setPreviewSize(FULL_SCREEN); camera.setFaceDetectionListener(new Camera.FaceDetectionListener() { @Override public void onFaceDetection(Camera.Face[] faces, Camera camera) { Log.i("FACES:", Integer.toString(faces.length)); } }); camera.startFaceDetection(); camera.autoFocus(new Camera.AutoFocusCallback() { public void onAutoFocus(boolean success, Camera camera) { Log.i("AUTOFOCUS", "AutoFocus: " + (success ? "Succeeded" : "Failed")); } }); } 。在标题文本非常短（可能<20pt）的情况下，按钮在左侧和右侧采用几个填充点。任何更长的时间，填充消失。就好像按钮具有在调用sizeToFit时所遵循的内部最小宽度一样。有谁知道如何防止这种填充？

Answer 1

这样做，只需将字符串更改为任何内容，并享受调整大小的奇迹。

NSString * helloKitty = @"I love cats";
UIButton * ss = [UIButton buttonWithType:UIButtonTypeCustom];
[ss setTitle:helloKitty forState:UIControlStateNormal];
[[ss titleLabel] setFont:[UIFont systemFontOfSize:14]];
[ss setBackgroundColor:[UIColor pink] forState:UIControlStateNormal];
CGSize strSizer = [helloKitty sizeWithAttributes:@{NSForegroundColorAttributeName:[UIColor blackColor],
                                                 NSFontAttributeName:[UIFont systemFontOfSize:14]}];

[ss setFrame:CGRectMake(100,200,strSizer.width, strSizer.height)];
[self.view addSubview:ss];