Merge commit '0a91a547ee32d559b7b737f69430d4d0732dfca9' * commit '0a91a547ee32d559b7b737f69430d4d0732dfca9': Fix the camera preview demo.
Merge commit '0a91a547ee32d559b7b737f69430d4d0732dfca9' * commit '0a91a547ee32d559b7b737f69430d4d0732dfca9': Fix the camera preview demo.