Abstract: A method includes: When detecting preview requests for a plurality of cameras, a first device creates views and buffers that correspond to the plurality of cameras in a camera Android application package APK, delivers the buffers corresponding to the views to a framework FWK layer, and obtains camera data streams corresponding to the plurality of cameras from a hardware abstraction layer HAL through the FWK layer; and the first device renders the plurality of camera data streams to the corresponding buffers respectively through a layer transferring module of the FWK layer. The camera data streams of the plurality of cameras are carried and displayed by using the plurality of views, and the plurality of camera data streams are rendered to the buffers of the corresponding views through the layer transferring module, so as to implement quick preview.

Abstract: A method includes: When detecting preview requests for a plurality of cameras, a first device creates views and buffers that correspond to the plurality of cameras in a camera Android application package APK, delivers the buffers corresponding to the views to a framework FWK layer, and obtains camera data streams corresponding to the plurality of cameras from a hardware abstraction layer HAL through the FWK layer; and the first device renders the plurality of camera data streams to the corresponding buffers respectively through a layer transferring module of the FWK layer. The camera data streams of the plurality of cameras are carried and displayed by using the plurality of views, and the plurality of camera data streams are rendered to the buffers of the corresponding views through the layer transferring module, so as to implement quick preview.