Control the virtual keyboard in Android

 

1 package com. dome;
2
3 import android. app. Activity;
4 import android. content. Intent;
5 import android. OS. Bundle;
6 import android. view. KeyEvent;
7 import android. view. View;
8 import android. view. WindowManager;
9 import android. view. inputmethod. InputMethodManager;
10 import android. widget. Button;
11 import android. widget. Toast;
12
13 /**
14 * This is a Dome that controls the virtual keyboard.
15 *
16 * @ author wuxin
17 *
18 */
19 public class KeyCodeDomeActivity extends Activity {
20
21 // customize a button that can open the virtual keyboard
22 private Button button;
23
24/** Called when the activity is first created .*/
25 @ Override
26 public void onCreate (Bundle savedInstanceState ){
27 super. onCreate (savedInstanceState );
28 setContentView (R. layout. main );
29
30 // obtain its resources
31 button = (Button) findViewById (R. id. button1 );
32
33 // set its listening events
34 button. setOnClickListener (new View. OnClickListener (){
35
36 @ Override
37 public void onClick (View v ){
38 // TODO Auto-generated method stub
39
40 // obtain the Class Object of the control keyboard
41 InputMethodManager imm = (InputMethodManager) KeyCodeDomeActivity. this
42. getSystemService (INPUT_METHOD_SERVICE );
43
44 // open (automatically click the button again to disappear)
45 imm. toggleSoftInput (0, InputMethodManager. HIDE_NOT_ALWAYS );
46}
47 });
48
49}
50
51 /**
52 * When the button event is triggered (only the virtual keyboard, Return key, Home key, and menu key are allowed ....)
53 */
54 @ Override
55 public boolean onKeyDown (int keyCode, KeyEvent event ){
56 // TODO Auto-generated method stub
57
58 /*
59 * the button to determine whether to click is the return key/Note: Add permission: android. permission. BIND_INPUT_METHOD
60 */
61 if (keyCode = KeyEvent. KEYCODE_BACK & event. getRepeatCount () = 0 ){
62
63 Toast. makeText (KeyCodeDomeActivity. this, "I am the return key ",
64 Toast. LENGTH_SHORT). show ();
65
66 return true; // be sure to set it to true; otherwise, roll back
67
68}
69
70 /*
71 * determine whether to click the Home Key/Note: Add permission: android. permission. DISABLE_KEYGUARD
72 * important: the following onAttachedToWindow () method must be added.
73 */
74 if (KeyEvent. KEYCODE_HOME = keyCode ){
75
76 Toast. makeText (getApplicationContext (), "I am the Home Key ",
77 Toast. LENGTH_SHORT). show ();
78
79 return true;
80
81}
82
83 /*
84 * click the menu key
85 */
86 if (KeyEvent. KEYCODE_MENU = keyCode ){
87
88 Toast. makeText (getApplicationContext (), "I am the Menu key ",
89 Toast. LENGTH_SHORT). show ();
90
91 return true;
92
93}
94
95 /*
96 * determine whether the key clicked is the search key
97 */
98 if (KeyEvent. KEYCODE_SEARCH = keyCode ){
99
100 Toast. makeText (getApplicationContext (), "I am a search key ",
101 Toast. LENGTH_SHORT). show ();
102
103 return true;
104
105}
106
107
108 return super. onKeyDown (keyCode, event );
109}
110
111 /*
112 * (non-Javadoc)
113 * @ see android. app. Activity # onAttachedToWindow ()
114 */
115 public void onAttachedToWindow (){
116 this. getWindow (). setType (WindowManager. LayoutParams. TYPE_KEYGUARD );
117 super. onAttachedToWindow ();
118}
119
120}