Touch-based gesture recognition and application navigation

An electronic device, comprising:

• a display;
• a touch-sensitive surface;
• one or more processors;
• and
• memory, the memory storing one or more programs that are configured to be executed by the one or more processors, the one or more programs including instructions for:
• displaying a first user interface of a software application, wherein:
• the software application has a hierarchy of user interfaces,
• the first user interface is associated with at least a first pan gesture recognizer and a second pan gesture recognizer,
• the first pan gesture recognizer is configured to recognize a pan gesture that has an initial direction along a first axis on the touch-sensitive surface in a plurality of predefined axes and/or a first direction on the touch-sensitive surface in a plurality of predefined directions, and
• the second pan gesture recognizer is configured to recognize a pan gesture that has an initial direction along a second axis on the touch-sensitive surface in the plurality of predefined axes and/or a second direction on the touch-sensitive surface distinct from the first direction, in the plurality of predefined directions;
• detecting a first pan gesture on the touch-sensitive surface while displaying the first user interface, wherein the first pan gesture has an initial direction across the touch-sensitive surface;
• while detecting the first pan gesture on the touch-sensitive surface, identifying, between the first pan gesture recognizer and the second pan gesture recognizer, a pan gesture recognizer that is configured to recognize the first pan gesture based at least on the initial direction of the first pan gesture;
• and
• processing the first pan gesture using the identified pan gesture recognizer.

A method, comprising:

• at an electronic device having a display, a touch-sensitive surface, one or more processors, and memory, the memory storing one or more programs for execution by the one or more processors:
• displaying a first user interface of a software application, wherein:
• the software application has a hierarchy of user interfaces,
• the first user interface is associated with at least a first pan gesture recognizer and a second pan gesture recognizer,
• the first pan gesture recognizer is configured to recognize a pan gesture that has an initial direction along a first axis on the touch-sensitive surface in a plurality of predefined axes and/or a first direction on the touch-sensitive surface in a plurality of predefined directions, and
• the second pan gesture recognizer is configured to recognize a pan gesture that has an initial direction along a second axis on the touch-sensitive surface in the plurality of predefined axes and/or a second direction on the touch-sensitive surface distinct from the first direction, in the plurality of predefined directions;
• detecting a first pan gesture on the touch-sensitive surface while displaying the first user interface, wherein the first pan gesture has an initial direction across the touch-sensitive surface;
• while detecting the first pan gesture on the touch-sensitive surface, identifying, between the first pan gesture recognizer and the second pan gesture recognizer, a pan gesture recognizer that is configured to recognize the first pan gesture based at least on the initial direction of the first pan gesture;
• and
• processing the first pan gesture using the identified pan gesture recognizer.