Apparatus including a touch screen under a multi-application environment and controlling method thereof

A method for controlling an electronic device, the method comprising:

• displaying, on a touch screen of the electronic device, a first window and a second window, wherein a first screen is displayed in a first direction in respect to the electronic device on the first window and a second screen is displayed in the first direction in respect to the electronic device;
• receiving, through the touch screen, a first touch input on the first window;
• detecting a motion of rotating or tilting the electronic device clockwise or counterclockwise while the first touch input is maintained on a first position of the first window;
• in response to detection of the motion of rotating or tilting the electronic device while the first touch input is maintained on the first position, determining whether an angle of the electronic device being rotated or tilted greater or equal to a threshold value;
• based on determining that the angle of the electronic device being rotated or tilted is less than the threshold value, displaying, on the touch screen, the first screen and the second screen in the first direction with respect to the electronic device while the electronic device is rotated or tilted;
• and
• based on determining that the angle of the electronic device being rotated or tilted is greater than or equal to the threshold value, displaying, on the touch screen, the first screen in the first direction with respect to the electronic device while the electronic device is rotated or tilted and rotating the second screen to be displayed in a second direction in respect to the electronic device, wherein the second direction is vertical to the first direction, and wherein an orientation of the second screen being rotated corresponds to an orientation of the electronic device being rotated or tilted.

A non-transitory computer-readable storage medium storing instructions, wherein the instructions are configured to, when executed by one or more processors of an electronic device, cause the one or more processors to:

• display, on a touch screen of the electronic device, a first window and a second window, wherein a first screen is displayed in a first direction in respect to the electronic device on the first window and a second screen is displayed in the first direction in respect to the electronic device;
• receive, through the touch screen, a first touch input on the first window;
• detect a motion of rotating or tilting the electronic device clockwise or counterclockwise while the first touch input is maintained on a first position of the first window;
• in response to detecting the motion of rotating or tilting the electronic device while the first touch input is maintained on the first position, determine whether an angle of the electronic device being rotated or tilted is greater than or equal to a threshold value;
• based on determining that the angle of the electronic device being rotated or tilted is less than the threshold value, display, on the touch screen, the first screen and the second screen in the first direction with respect to the electronic device while the electronic device is rotated or tilted;
• and
• based on determining that the angle of the electronic device being rotated or tilted is greater than or equal to the threshold value, display, on the touch screen, the first screen in the first direction with respect to the electronic device while the electronic device is rotated or tilted and rotate the second screen to be displayed in a second direction in respect to the electronic device, wherein the second direction is vertical to the first direction, and wherein an orientation of the second screen being rotated corresponds to an orientation of the electronic device being rotated or tilted.