Occasionally in low-memory conditions the UIImagePickerController I use gets 'stuck' with the shutter closed. Generally when this the WatchDog is allready jettisoning other background apps so within a second or two the low memory condition is over, yet the UIImagePicker controller is still stuck.Occasionally in low-memory conditions the UIIma
阅读背景：
相机模式下的UIImagePickerController在快门关闭时“卡住”
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