Abstract: An electronic device, while displaying a user interface with a favored navigation axis, detects first movement of a contact on a touch-sensitive surface that includes a first component along the favored navigation axis and a second component in a direction different from the favored navigation axis. In response, if first movement meets direction-lock termination criteria, the device moves one or more user interface objects in two dimensions in accordance with both components of the first movement; and if first movement does not meet the direction-lock termination criteria, the device moves user interface objects in one dimension along the favored navigation axis in accordance with the first component of the first movement. After meeting the direction-lock termination criteria, in response to continued second movement of the contact, the device moves user interface objects in accordance with the second movement without regard to whether the second movement meets the direction-lock termination criteria.

Abstract: The subject technology receives a command to initiate an application. The subject technology, in response to the command, generates a root node related to a root view of a first hierarchy of views representing a user interface (UI). The subject technology generates a child node of the root node for including in the first hierarchy of views, the child node corresponding to a first type of view. The subject technology generates a first child node of the child node for including in the first hierarchy of views, the first child node corresponding to a second type of view. The subject technology generates a graph including nodes, each node corresponding to a different attribute of the UI, wherein the root node, the child node, and the first child node have relationships with respective nodes from the graph.

Abstract: The subject technology sends, from a parent node of a hierarchy of views, information related to a preference list, the preference list include preference keys corresponding to respective attributes of a UI, where the hierarchy of views represents the UI. The subject technology receives, at a child node of the parent node, the information related to the preference list. The subject technology updates, by the child node, a particular preference key from the preference list to a particular value, the particular preference key related to an attribute of the UI.

Abstract: An electronic device, while displaying a user interface with a favored navigation axis, detects first movement of a contact on a touch-sensitive surface that includes a first component along the favored navigation axis and a second component in a direction different from the favored navigation axis. In response, if first movement meets direction-lock termination criteria, the device moves one or more user interface objects in two dimensions in accordance with both components of the first movement; and if first movement does not meet the direction-lock termination criteria, the device moves user interface objects in one dimension along the favored navigation axis in accordance with the first component of the first movement. After meeting the direction-lock termination criteria, in response to continued second movement of the contact, the device moves user interface objects in accordance with the second movement without regard to whether the second movement meets the direction-lock termination criteria.

Abstract: An electronic device with a display and a touch-sensitive surface displays a user interface with a plurality of content units, where the content units are arranged along a first axis in the user interface, and a respective content unit is associated with corresponding metadata. The device detects a contact on the touch-sensitive surface and a first movement of the contact. In response to detecting the first movement of the contact, the device moves a first set of one or more of the content units perpendicular to the first axis in the user interface in accordance with the first movement, and for one or more respective content units in the first set of content units, the device displays metadata for the respective content unit adjacent to the respective content unit that was not displayed immediately prior to detecting the first movement of the contact.

Abstract: An electronic device with a display and a touch-sensitive surface displays a user interface with a first electronic message, where the first electronic message is associated with corresponding message time metadata. While displaying the first electronic message, the electronic device detects only a single contact on the touch-sensitive surface and detect a first movement of only the single contact. In response to detecting the first movement of only the single contact, display message time metadata for the first electronic message adjacent to the first electronic messages, wherein the message time metadata was not displayed immediately prior to detecting the first movement of the single contact.

Abstract: Implementations of the subject technology provide a framework to support creating user interfaces (UI) and animations within the UIs. The subject technology receives first information related to an animation, the first information including an initial state, a destination state, and an animation function. The subject technology generates a copy of the destination state, the copy of the destination state comprising a record for the animation based at least in part on the first information related to the animation and further information related to the animation function. The subject technology updates a value related to an intermediate state of the animation in the copy of the destination state, the intermediate state being between the initial state and the destination state. Further, the subject technology provides the copy of the destination state that includes the value related to the intermediate state for rendering the animation.

Abstract: An electronic device with a display and a touch-sensitive surface displays a user interface with a first electronic message, where the first electronic message is associated with corresponding message time metadata. While displaying the first electronic message, the electronic device detects only a single contact on the touch-sensitive surface and detect a first movement of only the single contact. In response to detecting the first movement of only the single contact, display message time metadata for the first electronic message adjacent to the first electronic messages, wherein the message time metadata was not displayed immediately prior to detecting the first movement of the single contact.

Abstract: A device provides user interfaces for displaying messages in a messaging application. The device receives a plurality of messages from a first participant within a time interval and determines whether the plurality of messages meets message grouping criteria. In accordance with a determination that the plurality of messages does not meet the message grouping criteria, the device displays a plurality of separate bounded message areas representing the plurality of messages. In accordance with a determination that the plurality of messages meets the message grouping criteria, the device displays a single group bounded message area representing the plurality of messages.

Abstract: The subject technology receives a command to initiate an application. The subject technology, in response to the command, generates a root node related to a root view of a first hierarchy of views representing a user interface (UI). The subject technology generates a child node of the root node for including in the first hierarchy of views, the child node corresponding to a first type of view. The subject technology generates a first child node of the child node for including in the first hierarchy of views, the first child node corresponding to a second type of view. The subject technology generates a graph including nodes, each node corresponding to a different attribute of the UI, wherein the root node, the child node, and the first child node have relationships with respective nodes from the graph.

Abstract: The subject technology sends, from a parent node of a hierarchy of views, information related to a preference list, the preference list include preference keys corresponding to respective attributes of a UI, where the hierarchy of views represents the UI. The subject technology receives, at a child node of the parent node, the information related to the preference list. The subject technology updates, by the child node, a particular preference key from the preference list to a particular value, the particular preference key related to an attribute of the UI.

Abstract: Implementations of the subject technology provide a framework to support creating user interfaces (UI) and animations within the UIs. The subject technology receives first information related to an animation, the first information including an initial state, a destination state, and an animation function. The subject technology generates a copy of the destination state, the copy of the destination state comprising a record for the animation based at least in part on the first information related to the animation and further information related to the animation function. The subject technology updates a value related to an intermediate state of the animation in the copy of the destination state, the intermediate state being between the initial state and the destination state. Further, the subject technology provides the copy of the destination state that includes the value related to the intermediate state for rendering the animation.

Abstract: A device provides user interfaces for capturing and sending media, such as audio, video, or images, from within a messaging application. The device displays a message conversation having a media affordance. Responsive to contact on the media affordance, the device displays a record affordance and a send affordance. Responsive to contact on the record affordance, the device begins to record a video. Responsive to contact on the send affordance, the device sends the recorded video to the participants of the message conversation.

Abstract: A device provides user interfaces for displaying messages in a messaging application. The device receives a plurality of messages from a first participant within a time interval and determines whether the plurality of messages meets message grouping criteria. In accordance with a determination that the plurality of messages does not meet the message grouping criteria, the device displays a plurality of separate bounded message areas representing the plurality of messages. In accordance with a determination that the plurality of messages meets the message grouping criteria, the device displays a single group bounded message area representing the plurality of messages.

Abstract: A device provides user interfaces for capturing and sending media, such as audio, video, or images, from within a messaging application. The device displays a message conversation having a media affordance. Responsive to contact on the media affordance, the device displays a record affordance and a send affordance. Responsive to contact on the record affordance, the device begins to record a video. Responsive to contact on the send affordance, the device sends the recorded video to the participants of the message conversation.

Abstract: A device provides user interfaces for capturing and sending media, such as audio, video, or images, from within a message application. The device detects a movement of the device and in response, plays or records an audio message. The device detects a movement of the device and in response, sends a recorded audio message. The device removes messages from a conversation based on expiration criteria. The device shares a location with one or more message participants in a conversation.

Abstract: A device provides user interfaces for capturing and sending media, such as audio, video, or images, from within a message application. The device detects a movement of the device and in response, plays or records an audio message. The device sends the recorded audio message in response to detecting a movement of the device. The device removes messages from a conversation based on expiration criteria. The device shares a location with one or more message participants in a conversation.

Abstract: A device provides user interfaces for capturing and sending media, such as audio, video, or images, from within a message application. The device detects a movement of the device and in response, plays or records an audio message. The device detects a movement of the device and in response, sends a recorded audio message. The device removes messages from a conversation based on expiration criteria. The device shares a location with one or more message participants in a conversation.

Abstract: A device provides user interfaces for capturing and sending media, such as audio, video, or images, from within a message application. The device detects a movement of the device and in response, plays or records an audio message. The device sends the recorded audio message in response to detecting a movement of the device. The device removes messages from a conversation based on expiration criteria. The device shares a location with one or more message participants in a conversation.

Abstract: A device provides user interfaces for capturing and sending media, such as audio, video, or images, from within a message application. The device detects a movement of the device and in response, plays or records an audio message. The device sends the recorded audio message in response to detecting a movement of the device. The device removes messages from a conversation based on expiration criteria. The device shares a location with one or more message participants in a conversation.