Screen projection method for electronic device and electronic device

A computer-readable storage medium comprising

• a computer program, which when executed by a processor, cause the processor to perform operations comprising:
• receiving an operation that an electronic device plays back a video, and, in response, obtaining a state identifier of the electronic device, wherein the state identifier indicates whether the electronic device is in a state of system-mirrored screen projection in which content displayed on the electronic device is mirrored on another device;
• starting a content observer to monitor whether the electronic device is in the state of the system-mirrored screen projection in response to determining, based on the state identifier, that the electronic device is not in the state of the system-mirrored screen projection;
• in response to receiving a screen projection operation by a user, performing mirrored screen projection from the electronic device to a screen projection device and, changing the state identifier to indicate that the electronic device is in the state of the system-mirrored screen projection;
• and
• in response to the content observer detecting that the electronic device is in the state of system-mirrored screen projection:
• searching for a first available screen projection device through a DLNA protocol, and obtaining second device information of the first available screen projection device, wherein the first available screen projection device is a device that is in a same local area network as the electronic device and that supports the DLNA screen projection, and the second device information comprises at least one of an IP address, a MAC address, a UUID, a device identifier, and a device name of the first available screen projection device,
• determining first device information matches the second device information, and
• in response to determining the first device information matches the second device information, performing digital living network alliance (DLNA) screen projection from the electronic device to the screen projection device based on the first device information to automatically switch the manner of screen projection between the electronic device and the screen projection device to the DLNA screen projection from the system-mirrored screen projection.

A screen projection method for an electronic device, wherein the method comprises:

• starting a content observer to monitor whether the electronic device is in the state of the system-mirrored screen projection in response to determining, based on the state identifier, that the electronic device is not in the state of the system-mirrored screen projection;
• in response to receiving a screen projection operation by a user, performing mirrored screen projection from the electronic device to a screen projection device and changing the state identifier to indicate that the electronic device is in the state of the system-mirrored screen projection;
• and
• in response to the content observer detecting that the electronic device is in the state of system-mirrored screen projection:
• searching for a first available screen projection device through a DLNA protocol, and obtaining second device information of the first available screen projection device, wherein the first available screen projection device is a device that is in a same local area network as the electronic device and that supports the DLNA screen projection, and the second device information comprises at least one of an IP address, a MAC address, a UUID, a device identifier, and a device name of the first available screen projection device,
• determining first device information matches the second device information, and
• in response to determining the first device information matches the second device information, performing digital living network alliance (DLNA) screen projection from the electronic device to the screen projection device based on the first device information to automatically switch the manner of screen projection between the electronic device and the screen projection device to the DLNA screen projection from the system-mirrored screen projection.