[imageView setImageWithURL:[NSURL URLWithString:IMAGE_URL]];
会报错：“App TransportSecurity has blocked a cleartext HTTP (http://) resource load since it isinsecure. Temporary exceptions can be configured via your app's Info.plistfile.”
解释：ATS禁止HTTP明文传输，因为不安全。
解决方案：修改Info.plist文件，让它临时允许明文传输。
在Info.plist文件中添加"App Transport Security Settings", Type为"Dictionary",再添加"Allow Arbitrary Loads", Type 为"Boolean"，“Value”为“YES”即可。
