Android自定义键盘

布局文件

<?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="w" />
        <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>

<?xml version="1.0" encoding="utf-8"?>
<Keyboard xmlns:android="http://schemas.android.com/apk/res/android"
    android:keyWidth="25%p" android:horizontalGap="0px"
    android:verticalGap="0px" android:keyHeight="@dimen/key_height">
    <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="57419" android:keyEdgeFlags="right"
            android:keyIcon="@drawable/sym_keyboard_left" />
    </Row>
    <Row>
        <Key android:codes="52" android:keyLabel="4" />
        <Key android:codes="53" android:keyLabel="5" />
        <Key android:codes="54" android:keyLabel="6" />
        <Key android:codes="57421" android:keyEdgeFlags="right"
            android:keyIcon="@drawable/sym_keyboard_right" />
    </Row>
    <Row>
        <Key android:codes="55" android:keyLabel="7" />
        <Key android:codes="56" android:keyLabel="8" />
        <Key android:codes="57" android:keyLabel="9" />
        <Key android:codes="-3" android:keyHeight="100dip"
            android:keyEdgeFlags="right" android:isRepeatable="true"
            android:keyLabel="完成" />
    </Row>
    <Row>
        <Key android:codes="-2" android:keyLabel="ABC" />
        <Key android:codes="48" android:keyLabel="0" />
        <Key android:codes="-5" android:keyIcon="@drawable/sym_keyboard_delete" />
    </Row>
</Keyboard>

主要操作类

package com.example.administrator.yunphone.UI;

import java.util.List;

import android.app.Activity;
import android.content.Context;
import android.inputmethodservice.Keyboard;
import android.inputmethodservice.KeyboardView;
import android.inputmethodservice.Keyboard.Key;
import android.inputmethodservice.KeyboardView.OnKeyboardActionListener;
import android.text.Editable;
import android.view.View;
import android.widget.EditText;

import com.example.administrator.yunphone.R;

public class KeyboardUtil {
    private Context ctx;
    private Activity act;
    private KeyboardView keyboardView;
    private Keyboard k1;// 字母键盘
    private Keyboard k2;// 数字键盘
    public boolean isnun = false;// 是否数据键盘
    public boolean isupper = false;// 是否大写

    private EditText ed;

    public KeyboardUtil(Activity act, Context ctx, EditText edit) {
        this.act = act;
        this.ctx = ctx;
        this.ed = edit;
        k1 = new Keyboard(ctx, R.xml.qwerty);
        k2 = new Keyboard(ctx, R.xml.symbols);
        keyboardView = (KeyboardView) act.findViewById(R.id.keyboard_view);
        keyboardView.setKeyboard(k1);
        keyboardView.setEnabled(true);
        keyboardView.setPreviewEnabled(true);
        keyboardView.setOnKeyboardActionListener(listener);
    }

    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) {
            Editable editable = ed.getText();
            int start = ed.getSelectionStart();
            if (primaryCode == Keyboard.KEYCODE_CANCEL) {// 完成
                hideKeyboard();
            } else if (primaryCode == Keyboard.KEYCODE_DELETE) {// 回退
                if (editable != null && editable.length() > 0) {
                    if (start > 0) {
                        editable.delete(start - 1, start);
                    }
                }
            } else if (primaryCode == Keyboard.KEYCODE_SHIFT) {// 大小写切换
                changeKey();
                keyboardView.setKeyboard(k1);

            } else if (primaryCode == Keyboard.KEYCODE_MODE_CHANGE) {// 数字键盘切换
                if (isnun) {
                    isnun = false;
                    keyboardView.setKeyboard(k1);
                } else {
                    isnun = true;
                    keyboardView.setKeyboard(k2);
                }
            } else if (primaryCode == 57419) { // go left
                if (start > 0) {
                    ed.setSelection(start - 1);
                }
            } else if (primaryCode == 57421) { // go right
                if (start < ed.length()) {
                    ed.setSelection(start + 1);
                }
            } else {
                editable.insert(start, Character.toString((char) primaryCode));
            }
        }
    };
    
    /**
     * 键盘大小写切换
     */
    private void changeKey() {
        List<Key> keylist = k1.getKeys();
        if (isupper) {//大写切换小写
            isupper = false;
            for(Key key:keylist){
                if (key.label!=null && isword(key.label.toString())) {
                    key.label = key.label.toString().toLowerCase();
                    key.codes[0] = key.codes[0]+32;
                }
            }
        } else {//小写切换大写
            isupper = true;
            for(Key key:keylist){
                if (key.label!=null && isword(key.label.toString())) {
                    key.label = key.label.toString().toUpperCase();
                    key.codes[0] = key.codes[0]-32;
                }
            }
        }
    }

    public void showKeyboard() {
        int visibility = keyboardView.getVisibility();
        if (visibility == View.GONE || visibility == View.INVISIBLE) {
            keyboardView.setVisibility(View.VISIBLE);
        }
    }
    
    public void hideKeyboard() {
        int visibility = keyboardView.getVisibility();
        if (visibility == View.VISIBLE) {
            keyboardView.setVisibility(View.INVISIBLE);
        }
    }
    
    private boolean isword(String str){
        String wordstr = "abcdefghijklmnopqrstuvwxyz";
        if (wordstr.indexOf(str.toLowerCase())>-1) {
            return true;
        }
        return false;
    }

}

使用

 public void setKeyBoard() {
        edit = (EditText)findViewById(R.id.edit);
        edit.setInputType(InputType.TYPE_NULL);
        edit.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View view, MotionEvent motionEvent) {
                new KeyboardUtil(activity, context, edit).showKeyboard();
                return false;
            }
        });
    }