转载： Android自定义软键盘的实现
先看界面布局文件
[html] view plain copy <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <EditText android:id="@+id/edit" android:layout_width="fill_parent" android:layout_height="wrap_content" /> <EditText android:id="@+id/edit1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:password="true" /> <RelativeLayout android:layout_width="fill_parent" android:layout_height="wrap_content" > <android.inputmethodservice.KeyboardView android:id="@+id/keyboard_view" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:focusable="true" android:focusableInTouchMode="true" android:background="@color/lightblack" android:keyBackground="@drawable/btn_keyboard_key" android:keyTextColor="@color/white" android:visibility="gone" /> </RelativeLayout> </LinearLayout> 通过布局文件可以看出界面上有两个输入框，其中一个是密码输入框，界面上还有一个隐藏的键盘控件。 在res下新建xml文件夹，在xml文件夹中新建qwerty.xml和symbols.xml文件. qwerty.xml 是字母键盘布局，symbols.xml 是数字键盘布局，内如如下qwerty.xml内容
[html] view plain copy <?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> symbols.xml 内容 [html] view plain copy <?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> KeydemoActivity.java [java] view plain copy package cn.key; import android.app.Activity; import android.content.Context; import android.os.Bundle; import android.text.InputType; import android.view.MotionEvent; import android.view.View; import android.view.View.OnTouchListener; import android.widget.EditText; public class KeydemoActivity extends Activity { private Context ctx; private Activity act; private EditText edit; private EditText edit1; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); ctx = this; act = this; edit = (EditText) this.findViewById(R.id.edit); edit.setInputType(InputType.TYPE_NULL); edit1 = (EditText) this.findViewById(R.id.edit1); edit.setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { new KeyboardUtil(act, ctx, edit).showKeyboard(); return false; } }); edit1.setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { int inputback = edit1.getInputType(); edit1.setInputType(InputType.TYPE_NULL); new KeyboardUtil(act, ctx, edit1).showKeyboard(); edit1.setInputType(inputback); return false; } }); } } KeyboardUtil.java [java] view plain copy package cn.key; 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; 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; } } 源码下载地址：http://download.csdn.net/detail/hfsu0419/4534209