Electronic device and operation method thereof

1 . An electronic device comprising:

a housing including a first housing part and a second housing part configured to move with respect to the first housing part;

a flexible display having a display area including a first area and a second area, wherein the first area of the flexible display is exposed outside of the housing in a retracted state in which at least a portion of the display area is drawn into the housing, and the first area and the second area are exposed outside of the housing in an expanded state in which the at least a portion of the display area is drawn out of the housing;

a memory; and

at least one processor operatively coupled to the flexible display and the memory,

wherein the memory stores one or more instructions which, when executed by the at least one processor individually or collectively, cause the electronic device to:

display a first user interface corresponding to a first page of a home screen including an object on the first area of the flexible display in the retracted state, wherein the object comprises an icon representing an application, a folder, or a file;

receive a first user input including a long touch input to select the object;

in response to receiving the first user input, change a state of the flexible display from the retracted state to the expanded state to expose the second area to the outside of the housing and display a second user interface corresponding to a second page of the home screen on the exposed second area;

receive a second user input including a drag input linked to the long touch input to move the object from the first user interface on the first area to the second user interface on the second area; and

in response to receiving the second user input, move the object to the second page of the home screen, wherein the drag input crosses from the first user interface to the second user interface.

2 . The electronic device of claim 1 , wherein the instructions cause the electronic device to:

identify a degree at which the at least a portion of the display area of the flexible display is drawn out of the housing by using a sensor;

sequentially display a third user interface corresponding to a third page of the home screen and the second user interface on the at least a portion of the display area based on the identified degree as the display changes from the retracted state to the expanded state.

3 . The electronic device of claim 1 , wherein the object is included in a first specified folder, and

wherein the instructions cause the electronic device to:

identify a degree at which the at least a portion of the display area of the flexible display is drawn out of the housing by using a sensor;

sequentially display the second user interface corresponding to a folder of a different level than the first specified folder on the at least a portion of the display area based on the identified degree as the display changes from the retracted state to the expanded state.

4 . The electronic device of claim 1 , wherein the at least a portion of the display areas includes a first sub-area and a second sub-area different from the first sub-area,

wherein the instructions cause the electronic device to:

display the second user interface on the first sub-area based on identifying that the at least a portion of the display area is drawn out by a first length value; and

display a third user interface on the second sub-area based on identifying that the at least a portion of the display area is drawn out by a second length value.

5 . The electronic device of claim 4 , wherein the instructions cause the electronic device to:

switch from the first user interface to the second user interface with a specified effect based on determining that the second user input related to the object is placed on the second user interface; and

switch from the second user interface to the third user interface with a specified effect based on determining that the second user input related to the object is placed on the third user interface.

6 . The electronic device of claim 4 , wherein the first user interface, the second user interface and the third user interface respectively correspond to different pages of the home screen, and

the instructions cause the electronic device to:

recognize that the second user input related to the object is placed on one of the second user interface or the third user interface;

recognize that the second user input related to the object is released from one of the second user interface or the third user interface; and

perform a specified function of locating the object on a specified page corresponding to the user interface in which the second user input related to the object is released among the pages, based on recognizing that the second user input related to the object is released.

7 . The electronic device of claim 4 , wherein the instructions cause the electronic device to:

execute a specified application hierarchically including a plurality of folders having different levels;

recognize that the second user input related to the object and received on the first user interface corresponding to a first folder among the plurality of folders is located on the second user interface corresponding to a second folder among the plurality of folders;

recognize that the second user input related to the object is released from the second user interface; and

perform a specified function of moving or copying the object to the second folder based on recognizing that the second user input related to the object is released from the second user interface, and

wherein the second folder includes the first folder.

8 . The electronic device of claim 4 , wherein the second user interface corresponds to an interface for inputting a first specified type of object,

wherein the third user interface corresponds to an interface for inputting a second specified type of object, and

wherein the instructions cause the electronic device to:

allow the flexible display to display an input interface in the retracted state; and

display the second user interface or the third user interface based on the first length value or the second length value while maintaining the input interface.

9 . The electronic device of claim 4 , wherein the instructions cause the electronic device to:

recognize that the second user input related to the object is located in one of the second user interface or the third user interface; and

locate the object on a user interface in which the second user input related to the object is located based on the recognition.

10 . The electronic device of claim 9 , wherein the instructions cause the electronic device to:

recognize a user input received at the first user interface while the object is located in a user interface in which the user input related to the object is located;

determine a specified page among a plurality of pages based on the recognized user input; and

perform the specified function of locating the object onto the specified page based on receiving a user input for locating the object onto the specified page.

11 . A method of operating an electronic device which includes a flexible display having a display area including a first area and a second area, wherein the first area of the flexible display is exposed outside of a housing in a retracted state in which at least a portion of the display area is drawn into the housing, the first area and the second area of the flexible display are exposed outside of the housing in an expanded state in which the at least a portion of the display area is drawn out of the housing, the method comprising:

displaying a first user interface corresponding to a first page of a home screen including an object on the first area of the flexible display when the flexible display is in the retracted state, wherein the object comprises an icon representing an application, a folder, or a file;

receiving a first user input including a long touch input to select the object;

in response to receiving the first user input, changing a state of the flexible display from the retracted state to the expanded state to expose the second area to the outside of the housing and display a second user interface corresponding to a second page of the home screen on the exposed second area;

receiving a second user input including a drag input linked to the long touch input to move the object from the first user interface on the first area to the second user interface on the second area; and

in response to receiving the second user input, moving the object to the second page of the home screen, wherein the drag input crosses from the first user interface to the second user interface.

12 . The method of claim 11 , further comprising:

identifying a degree at which the at least a portion of the display area of the flexible display is drawn out of the housing by using a sensor; and

sequentially displaying the second user interface and a third user interface corresponding to a third page of the home screen on the at least a portion of the display area based on the identified degree as the flexible display changes from the retracted state to the expanded state.

13 . The method of claim 11 , wherein the object is included in a first specified folder, and further comprising:

identifying a degree at which the at least a portion of the display area of the flexible display is drawn out of the housing by using a sensor; and

sequentially displaying the second user interface corresponding to a second folder of a different level than the first specified folder and a third user interface corresponding to a third folder of a different level than the first specified folder and the second folder on the at least a portion of the display area based on the identified degree as the flexible display changes from the retracted state to the expanded state.

14 . The method of claim 11 , wherein the at least a portion of the display areas includes a first sub-area and a second sub-area different from the first sub-area, and further comprising:

displaying the second user interface on the first sub-area based on determining that the at least a portion of the display area is drawn out by a first length value; and

displaying a third user interface on the second sub-area based on determining that the at least a portion of the display area is drawn out by a second length value.

15 . The method of claim 14 , wherein the first user interface, the second user interface and the third user interface respectively correspond to different pages of the home screen, and further comprising:

performing a specified function related to the object, wherein the performing of the specified function related to the object includes:

recognizing that the second user input related to the object is placed on one of the second user interface or the third user interface;

recognizing that the second user input related to the object is released from one of the second user interface or the third user interface; and

performing a specified function of locating the object on a specified page corresponding to the user interface in which the second user input related to the object is released among the pages, based on recognizing that the second user input related to the object is released.

16 . The method of claim 14 , further comprising:

executing a specified application hierarchically including a plurality of folders having different levels, and performing a specified function related to the object,

wherein the performing of the specified function related to the object includes:

recognizing that the second user input related to the object and received on the first user interface corresponding to a first folder among the plurality of folders is located on the second user interface corresponding to a second folder among the plurality of folders;

recognizing that the second user input related to the object is released from the second user interface; and

performing a specified function of moving or copying the object to the second folder based on recognizing that the second user input related to the object is released from the second user interface, and

wherein the second folder includes the first folder.