adb shell input events

By 'adb shell input keyevent', either an event_code or a string will be sent to the device.

usage: input [text|keyevent]
  input text <string>
  input keyevent <event_code>

Event_code could be:

0 -->  "KEYCODE_UNKNOWN" 

1 -->  "KEYCODE_MENU" 

2 -->  "KEYCODE_SOFT_RIGHT" 

3 -->  "KEYCODE_HOME" 

4 -->  "KEYCODE_BACK" 

5 -->  "KEYCODE_CALL" 

6 -->  "KEYCODE_ENDCALL" 

7 -->  "KEYCODE_0" 

8 -->  "KEYCODE_1" 

9 -->  "KEYCODE_2" 

10 -->  "KEYCODE_3" 

11 -->  "KEYCODE_4" 

12 -->  "KEYCODE_5" 

13 -->  "KEYCODE_6" 

14 -->  "KEYCODE_7" 

15 -->  "KEYCODE_8" 

16 -->  "KEYCODE_9" 

17 -->  "KEYCODE_STAR" 

18 -->  "KEYCODE_POUND" 

19 -->  "KEYCODE_DPAD_UP" 

20 -->  "KEYCODE_DPAD_DOWN" 

21 -->  "KEYCODE_DPAD_LEFT" 

22 -->  "KEYCODE_DPAD_RIGHT" 

23 -->  "KEYCODE_DPAD_CENTER" 

24 -->  "KEYCODE_VOLUME_UP" 

25 -->  "KEYCODE_VOLUME_DOWN" 

26 -->  "KEYCODE_POWER" 

27 -->  "KEYCODE_CAMERA" 

28 -->  "KEYCODE_CLEAR" 

29 -->  "KEYCODE_A" 

30 -->  "KEYCODE_B" 

31 -->  "KEYCODE_C" 

32 -->  "KEYCODE_D" 

33 -->  "KEYCODE_E" 

34 -->  "KEYCODE_F" 

35 -->  "KEYCODE_G" 

36 -->  "KEYCODE_H" 

37 -->  "KEYCODE_I" 

38 -->  "KEYCODE_J" 

39 -->  "KEYCODE_K" 

40 -->  "KEYCODE_L" 

41 -->  "KEYCODE_M" 

42 -->  "KEYCODE_N" 

43 -->  "KEYCODE_O" 

44 -->  "KEYCODE_P" 

45 -->  "KEYCODE_Q" 

46 -->  "KEYCODE_R" 

47 -->  "KEYCODE_S" 

48 -->  "KEYCODE_T" 

49 -->  "KEYCODE_U" 

50 -->  "KEYCODE_V" 

51 -->  "KEYCODE_W" 

52 -->  "KEYCODE_X" 

53 -->  "KEYCODE_Y" 

54 -->  "KEYCODE_Z" 

55 -->  "KEYCODE_COMMA" 

56 -->  "KEYCODE_PERIOD" 

57 -->  "KEYCODE_ALT_LEFT" 

58 -->  "KEYCODE_ALT_RIGHT" 

59 -->  "KEYCODE_SHIFT_LEFT" 

60 -->  "KEYCODE_SHIFT_RIGHT" 

61 -->  "KEYCODE_TAB" 

62 -->  "KEYCODE_SPACE" 

63 -->  "KEYCODE_SYM" 

64 -->  "KEYCODE_EXPLORER" 

65 -->  "KEYCODE_ENVELOPE" 

66 -->  "KEYCODE_ENTER" 

67 -->  "KEYCODE_DEL" 

68 -->  "KEYCODE_GRAVE" 

69 -->  "KEYCODE_MINUS" 

70 -->  "KEYCODE_EQUALS" 

71 -->  "KEYCODE_LEFT_BRACKET" 

72 -->  "KEYCODE_RIGHT_BRACKET" 

73 -->  "KEYCODE_BACKSLASH" 

74 -->  "KEYCODE_SEMICOLON" 

75 -->  "KEYCODE_APOSTROPHE" 

76 -->  "KEYCODE_SLASH" 

77 -->  "KEYCODE_AT" 

78 -->  "KEYCODE_NUM" 

79 -->  "KEYCODE_HEADSETHOOK" 

80 -->  "KEYCODE_FOCUS" 

81 -->  "KEYCODE_PLUS" 

82 -->  "KEYCODE_MENU" 

83 -->  "KEYCODE_NOTIFICATION" 

84 -->  "KEYCODE_SEARCH" 

85 -->  "TAG_LAST_KEYCODE"

The sendevent utility sends touch or keyboard events, as well as other events for simulating the hardware events. Refers to "android-low-level-shell-click-on-screen".