自定义键盘的布局及实现

步骤：

1.在res下新建xml文件夹，在xml文件夹中新建.xml文件，用来实现软键盘的布局

2.标签Keyboard代表是软键盘，标签Row代表的是一行，Key代表的是一个按键

3.每一个按键都有一个codes值，在类中就是通过codes的值来监听每一个按钮。keylabel的值是键盘所要显示的文字

注：

Keyborad：说明是一个软键盘定义文件

Row:说明是一行按键的定义

Key:说明是一个按键的定义

Codes:代表按键对应的输出值

keyLabel:代表按键显示的文本内容

keyIcon:代表按键显示的图标内容，如果指定了该值则在显示的时候显示为图片不显示文本

keyWidth:代表按键的宽度，可以为精确值或者相对值，对于精确值支持多种单位，例如：像素、英寸等。相对值为百分比，以%或%p结尾，其中%p表示相对于父容器。

keyHeight:代表按键的高度，取值同上

horizontalGap:代表按键前的间隙（水平方向），取值同上

isSticky:指定按键是否为sticky。如Shift大小写切换按键，具有两种状态，按下状态和正常状态，取值为true或者false

isModifier:指定按键是否为功能键，如Alt或者Shift，取值为true或false

keyOutputText:指按键输出的文本内容，取值为字符串

isRepeatable:指按键是否可是否是可重复的，如故长按该键可以触发重复按键事件则为true，否则为false

keyEdgeFlags"指定按键的对齐指令，取值为left或right

加载布局

   this.keyboardView = keyboardView1;        keyboardView.setOnKeyboardActionListener(listener);        this.myImeService = myImeService1;        k1 = new Keyboard(myImeService.getApplicationContext(), R.xml.chinese);        keyboardView.setKeyboard(k1);        keyboardView.setEnabled(true);        keyboardView.setPreviewEnabled(true);

设置监听，并处理事件

 private OnKeyboardActionListener listener = new OnKeyboardActionListener() {        @Override        public void swipeUp() {        }        @Override        public void swipeRight() {        }        @Override        public void swipeLeft() {        }        @Override        public void swipeDown() {        }        @Override        public void onText(CharSequence text) {        }        @Override        public void onRelease(int primaryCode) {        }        @Override        public void onPress(int primaryCode) {        }        @Override        public void onKey(int primaryCode, int[] keyCodes) {            InputConnection ic = myImeService.getCurrentInputConnection();            switch (primaryCode) {                case Keyboard.KEYCODE_DELETE://myImeService.deleteText();                    ic.deleteSurroundingText(1, 0);                    break;                case Keyboard.KEYCODE_CANCEL://myImeService.hideInputMethod();                    break;                case Keyboard.KEYCODE_DONE:                    ic.sendKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_NUMPAD_ENTER));                    break;                default://myImeService.commitText(Character.toString((char) primaryCode));                    ic.commitText(String.valueOf((char) primaryCode), 1);                    break;            }        }    };

一、字母键盘

<?xml version="1.0" encoding="UTF-8"?><Keyboard android:keyWidth="10.000002%p"android:keyHeight="@dimen/key_height"android:horizontalGap="0.0px"android:verticalGap="0.0px"xmlns:android="http://schemas.android.com/apk/res/android"><Row><Key android:codes="113" android:keyEdgeFlags="left"android:keyLabel="q" /><Key android:codes="119" android:keyLabel="ww" /><Key android:codes="101" android:keyLabel="e" /><Key android:codes="114" android:keyLabel="r" /><Key android:codes="116" android:keyLabel="t" /><Key android:codes="121" android:keyLabel="y" /><Key android:codes="117" android:keyLabel="u" /><Key android:codes="105" android:keyLabel="i" /><Key android:codes="111" android:keyLabel="o" /><Key android:codes="112" android:keyEdgeFlags="right"android:keyLabel="p" /></Row><Row><Key android:horizontalGap="4.999995%p" android:codes="97"android:keyEdgeFlags="left" android:keyLabel="a" /><Key android:codes="115" android:keyLabel="s" /><Key android:codes="100" android:keyLabel="d" /><Key android:codes="102" android:keyLabel="f" /><Key android:codes="103" android:keyLabel="g" /><Key android:codes="104" android:keyLabel="h" /><Key android:codes="106" android:keyLabel="j" /><Key android:codes="107" android:keyLabel="k" /><Key android:codes="108" android:keyEdgeFlags="right"android:keyLabel="l" /></Row><Row><Key android:keyWidth="14.999998%p" android:codes="-1"android:keyEdgeFlags="left" android:isModifier="true"android:isSticky="true" android:keyIcon="@drawable/sym_keyboard_shift" /><Key android:codes="122" android:keyLabel="z" /><Key android:codes="120" android:keyLabel="x" /><Key android:codes="99" android:keyLabel="c" /><Key android:codes="118" android:keyLabel="v" /><Key android:codes="98" android:keyLabel="b" /><Key android:codes="110" android:keyLabel="n" /><Key android:codes="109" android:keyLabel="m" /><Key android:keyWidth="14.999998%p" android:codes="-5"android:keyEdgeFlags="right" android:isRepeatable="true"android:keyIcon="@drawable/sym_keyboard_delete" /></Row><Row android:rowEdgeFlags="bottom"><Key android:keyWidth="20.000004%p" android:codes="-2"android:keyLabel="12#" /><Key android:keyWidth="14.999998%p" android:codes="44"android:keyLabel="," /><Key android:keyWidth="29.999996%p" android:codes="32"android:isRepeatable="true" android:keyIcon="@drawable/sym_keyboard_space" /><Key android:keyWidth="14.999998%p" android:codes="46"android:keyLabel="." /><Key android:keyWidth="20.000004%p" android:codes="-3"android:keyEdgeFlags="right" android:keyLabel="完成" /></Row></Keyboard>

运行后的结果：

二、数字键盘

<?xml version="1.0" encoding="UTF-8"?><Keyboard android:keyWidth="20%p"android:keyHeight="@dimen/key_height"android:horizontalGap="0.0px"android:verticalGap="0.0px"xmlns:android="http://schemas.android.com/apk/res/android"><Row><Key android:codes="49" android:keyLabel="1" /><Key android:codes="50" android:keyLabel="2" /><Key android:codes="51" android:keyLabel="3" /><Key android:codes="52" android:keyLabel="4" /><Key android:codes="-5" android:keyIcon="@drawable/sym_keyboard_delete" /></Row><Row><Key android:codes="53" android:keyLabel="5" /><Key android:codes="54" android:keyLabel="6" /><Key android:codes="55" android:keyLabel="7" /><Key android:codes="56" android:keyLabel="8" /><Key android:codes="-2" android:keyLabel="中文" /></Row><Row><Key android:codes="57" android:keyLabel="9" /><Key android:codes="48" android:keyLabel="0" /><Key android:codes="46" android:keyLabel="." /><Key android:codes="-3" android:keyLabel="完成"android:keyWidth="40%p" android:isRepeatable="true" /></Row></Keyboard>

运行后的结果：

三、中文键盘

<?xml version="1.0" encoding="UTF-8"?><Keyboard android:keyWidth="20%p"android:keyHeight="@dimen/key_height"android:horizontalGap="0.0px"android:verticalGap="0.0px"xmlns:android="http://schemas.android.com/apk/res/android"><Row><Key android:codes="19968" android:keyLabel="一" /><Key android:codes="20108" android:keyLabel="二" /><Key android:codes="19977" android:keyLabel="三" /><Key android:codes="-5" android:keyIcon="@drawable/sym_keyboard_delete"android:keyWidth="40%p" android:isRepeatable="true"/></Row><Row><Key android:codes="20116" android:keyLabel="五" /><Key android:codes="20845" android:keyLabel="六" /><Key android:codes="22235" android:keyLabel="四" /><Key android:codes="-2" android:keyLabel="數字"android:keyWidth="40%p" android:isRepeatable="true"/></Row></Keyboard>

运行后的结果：

注：参考资料：

http://www.jianshu.com/p/23fc9663358f

http://www.10tiao.com/html/169/201703/2650822379/1.html

http://blog.csdn.net/acrambler/article/details/13213181

http://blog.csdn.net/hfsu0419/article/details/7924673