16. The text input method as claimed in claim 15 , wherein a direction of a movement of the currently selected character on the key-related graphical user interface component from the first character or the second character to the first subsequent character is associated with a direction of the first touch operation track.
16. The text input method as claimed in claim 15 , wherein a direction of a movement of the currently selected character on the key-related graphical user interface component from the first character or the second character to the first subsequent character is associated with a direction of the first touch operation track. 17. The text input method as claimed in claim 16 , wherein the character input method further comprises: selecting another second subsequent character in the key-related graphical user interface component other than the first subsequent character as the currently selected character according to a second route of character presentation to traverse the plurality of character candidates in the key-related graphical user interface component in response to a second touch operation track based on the selected key.