Method and mobile phone for capturing audio file or video file

A mobile phone, comprising:

• a display screen, configured to implement at least one of (a) displaying an application interface, and (b) receiving an operation;
• a start-capturing module, configured to:
• in a process of playing an audio file or a video file, when a long-press event on a trackball displaying a play progress on the display screen is received, start capturing the audio file or video file;
• a stop-capturing module, configured to:
• in a process of capturing the audio file or video file, when the long-press event on the trackball displaying the play progress is received, stop capturing;
• and
• a saving module, configured to save the captured audio file or video file;
• an output prompting module, configured to output a capture prompt;
• wherein the output prompting module at least comprises any one of following modules:
• (a) a first output prompting module, configured to display a capture progress on the display screen of the mobile phone;
• (b) a second output prompting module, configured to display a capture state on the display screen of the mobile phone;
• and
• (c) a third output prompting module, configured to change a color of the trackball before and after starting capturing.