Combining first user interface content into second user interface

1. A method, comprising:

displaying, within a messaging application running on a first device associated with a first user, a first user interface in which a camera of the first device is deactivated, the first user interface for viewing comprising a first media content item sent by a second device associated with a second user, the first user and the second user corresponding to contacts within the messaging application;

receiving user input via the first user interface, the user input corresponding to a pinch gesture; and

in response to receiving the user input,

activating the camera to capture an image in real-time, and

displaying a second user interface which replaces the first user interface, and the second user interface for generating a second media content item, for display in the second user interface, for sending to the second user as a reply to the first media content item, the second media content item including the image and a smaller version of the first media content item as a sticker overlaying the image.

2. The method of claim 1 , further comprising:

detecting a first object displayed in the first media content item;

detecting a second object displayed in the image; and

determining a ranking for a plurality of augmented reality content items for displaying with the image and the smaller version of first media content item, the ranking being based on the first object and the second object.

3. The method of claim 2 , wherein determining the ranking comprises:

sending, to a server, a request to rank the plurality of augmented reality content items, the request indicating the first object and the second object; and

receiving, from the server and in response to sending the request, an indication of the ranking for the plurality of augmented reality content items.

4. The method of claim 2 , further comprising:

displaying a carousel interface with icons ordered based on the ranking, the carousel interface comprising multiple icons, each icon being user-selectable to display a respective one of the plurality of augmented reality content items with the image.

5. The method of claim 1 , further comprising:

receiving second user input to create a second media content item which includes the smaller version of first media content item and the image; and

generate, in response to receiving the second user input, the second media content item.

6. The method of claim 1 , further comprising:

displaying an animation which resizes first media content item to the smaller version of first media content item.

7. The method of claim 1 , wherein first media content item corresponds to a received message sent by the second user of the second device.

8. The method of claim 1 ,

wherein display of first media content item within the first user interface is subject to one or more restrictions, and

wherein displaying the smaller version of first media content item conforms with the one or more restrictions.

9. The method of claim 8 , wherein the one or more restrictions comprise a time-based restriction which limits display of the smaller version of the first media content item to a time period specified by the second user.

10. The method of claim 8 , wherein the one or more restrictions comprise a sharing restriction, set by the second user, which restricts sharing of the second media content item to the second user.

11. A device, comprising:

a processor; and

a memory storing instructions that, when executed by the processor, cause the processor to:

display, within a messaging application running on a device associated with a first user, a first user interface in which a camera of the device is deactivated, the first user interface for viewing comprising a first media content item sent by a second device associated with a second user, the first user and the second user corresponding to contacts within the messaging application;

receive user input via the first user interface, the user input corresponding to a pinch gesture; and

in response to receiving the user input,

activate the camera to capture an image in real-time, and

display a second user interface which replaces the first user interface, and the second user interface for generating a second media content item, for display in the second user interface, for sending to the second user as a reply to the first media content item, the second media content item including the image and a smaller version of the first media content item as a sticker overlaying the image.

12. The device of claim 11 , wherein the instructions further cause the processor to:

detect a first object displayed in first media content item;

detect a second object displayed in the image; and

determine a ranking for a plurality of augmented reality content items for displaying with the image and the smaller version of first media content item, the ranking being based on the first object and the second object.

13. The device of claim 12 , wherein determining the ranking comprises:

send, to a server, a request to rank the plurality of augmented reality content items, the request indicating the first object and the second object; and

receive, from the server and in response to sending the request, an indication of the ranking for the plurality of augmented reality content items.

14. The device of claim 12 , wherein the instructions further cause the processor to:

display a carousel interface with icons ordered based on the ranking, the carousel interface comprising multiple icons, each icon being user-selectable to display a respective one of the plurality of augmented reality content items with the image.

15. The device of claim 11 , wherein the instructions further cause the processor to:

receive second user input to create a second media content item which includes the smaller version of first media content item and the image; and

generate, in response to receiving the second user input, the second media content item.

16. The device of claim 11 , wherein the instructions further cause the processor to:

display an animation which resizes first media content item to the smaller version of first media content item.

17. The device of claim 11 , wherein first media content item corresponds to a received message sent by the second user of the second device.

18. The device of claim 11 , wherein display of first media content item within the first user interface is subject to one or more restrictions, and

wherein displaying the smaller version of first media content item conforms with the one or more restrictions.

19. A non-transitory computer-readable storage medium, the computer-readable storage medium including instructions that when executed by a computer, cause the computer to:

display, within a messaging application running on a first device associated with a first user, a first user interface in which a camera of the first device is deactivated, the first user interface for viewing comprising a first media content item sent by a second device associated with a second user, the first user and the second user corresponding to contacts within the messaging application;

receive user input via the first user interface, the user input corresponding to a pinch gesture; and

in response to receiving the user input,

activate the camera to capture an image in real-time, and

display a second user interface which replaces the first user interface, and the second user interface for generating a second media content item, for display in the second user interface, for sending to the second user as a reply to the first media content item, the second media content item including the image and a smaller version of the first media content item as a sticker overlaying the image.

20. The computer-readable storage medium of claim 19 , wherein the instructions further configure the computer to:

detect a first object displayed in the first media content item;

detect a second object displayed in the image; and

determine a ranking for a plurality of augmented reality content items for displaying with the image and the smaller version of the first media content item, the ranking being based on the first object and the second object.