Crear una aplicación para Android

Target device: -Android 5.0 or higher -API level 21 -Landscape 1920x1080 -Need the source not just apk MainActivity: -SurfaceView or TextureView fullscreen (the one you think is better for camera preview) and 6 ImageButtons (dispose the elements on the layout as you prefer, I have to work on the format after). -On SurfaceView or TextureView show preview from camera (it's not for mobile devices, it's for a mini pc with one usb webcam). -On touch of any of each button show countdown (3, 2, 1 – I don't know what to use for this), take a picture from camera preview on countdown ends, store image “temporaly” on folder of the app (that is created if it does not exist). By store “temporaly” I mean that only the last image taken is stored, once you take a new picture on MainActivity the one that already exists is overwritten by the new one. Other 6 Activities: -Basically the same activity six times, each button from MainActivity addresses to one of these activities (I need 6 activities because the layouts for them will be different but if there is an easier way to do it I'm open to consider it). -The content is just an ImageView where the picture taken on MainActivity is shown and two imageButtons one to go back to MainActivity and one to send a sreenshot to a “code defined” email (I mean that the screenshot will be sent always to the same email – the user will not write an email adrress to send it). The screenshot will not be fullscreen (you can set the coordinates you want and once the layout of each activity is finished I'll change them). Suggested names for the different elements (so I can identify them easily for modifications): Activities -MainActivity -FemaleCar -FemaleTravel -FemaleBoat -MaleCar -MaleTravel -MaleBoat (Layouts names more or less related to their activity) MainActivity -surfaceView or textureView or something like that -button_fc -button_ft -button_fb -button_mc -button_mt -button_mb Other Activities -button_back -button_send These are an orientation but you can use different names easy to identify after. You can use sample images for buttons, I'll change them. Of course if there are things I haven't considered or better ways to do I'm 100% open to any suggestions.