Password Protection for Images on Android

I am planning to create an application which protects images from unauthorized access by anyone. What I'm planning to do is protect t开发者_StackOverflow社区he images by putting a password in the image so that every time I view the image it will prompt to input first the password assigned. How can I do this? or is it possible?

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You can probably find a way to store a password somewhere in the data of an image file, but you cannot force the consumers of that image file to enter a password or otherwise restrict access to the image from the image itself. Images aren't programs.

@walkingTarget's comment would be the best way to universally restrict access to the image -- encrypt the image file using some user-definable key. Your question then becomes "how do I encrypt/decrypt files in Java on the Android platform?" This SO question might nudge you toward an answer.

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You may use zip with password to encrypt the image and then use android to open it by prompting the user to give password