Android自定义软键盘的实现

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

版权声明：本文为博主原创文章，未经博主允许不得转载。





先看界面布局文件

[html] view
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<?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="vert
4000
ical" >

<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

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<?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

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<?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"

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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
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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
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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