android自定义数字软键盘、修改review按钮的样式

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Android提供KeyboardView可以让用户实现对软键盘的自定义；具体的定义数字键盘，还是字符键盘可以按照自己的需求进行定制；

本文提供数字键盘的自定义实现，并解决软键盘按下后review背景按钮样式的修改；

(1)main.xml文件下面定义一个KeyboardView;

(2)在xml文件夹下面定义一个数字键盘number.xml文件；

(3)提供一个软件盘的实现工具类

先上运行后的效果图，不是你要的就不用仔细读代码啦

main.xml中的核心代码如下：

number.xml中的代码如下；主要用来定义数字键；注意该文件存放在xml文件夹下面；

<?xml version="1.0" encoding="utf-8"?>
<Keyboard xmlns:android="http://schemas.android.com/apk/res/android"
android:horizontalGap="3dp"
android:keyHeight="48dp"
android:keyWidth="33.33%p"
android:verticalGap="3dp" >

<Row>
<Key
android:codes="49"
android:keyLabel="1" />
<Key
android:codes="50"
android:keyLabel="2" />
<Key
android:codes="51"
android:keyLabel="3" />
</Row>
<Row>
<Key
android:codes="52"
android:keyLabel="4" />
<Key
android:codes="53"
android:keyLabel="5" />
<Key
android:codes="54"
android:keyLabel="6" />
</Row>
<Row>
<Key
android:codes="55"
android:keyLabel="7" />
<Key
android:codes="56"
android:keyLabel="8" />
<Key
android:codes="57"
android:keyLabel="9" />
</Row>
<Row>
<Key
android:codes="-5"
android:keyIcon="@drawable/sym_keyboard_delete" />
<Key
android:codes="48"
android:keyLabel="0" />
<Key
android:codes="-3"
android:isRepeatable="true"
android:keyLabel="完成" />
</Row>
</Keyboard>

软键盘工具类的代码如下：

public class KeyboardUtil {

private Context ctx;
private Activity act;
private KeyboardView keyboardView; //keyBoardView组建
private Keyboard k1, k2;// 数字键盘, 字母键盘
public boolean isnun = true;// 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.numbers);
k2 = new Keyboard(ctx, R.xml.text);
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() {
// TODO Auto-generated method stub
}

@Override
public void swipeRight() {
// TODO Auto-generated method stub
}

@Override
public void swipeLeft() {
// TODO Auto-generated method stub
}

@Override
public void swipeDown() {
// TODO Auto-generated method stub
}

@Override
public void onText(CharSequence text) {
// TODO Auto-generated method stub
}

@Override
public void onRelease(int primaryCode) {
// TODO Auto-generated method stub
}

@Override
public void onPress(int primaryCode) {
// TODO Auto-generated method stub
}

@Override
public void onKey(int primaryCode, int[] keyCodes) {
// TODO Auto-generated method stub
Editable editable = ed.getText();
int start = ed.getSelectionStart();
if (primaryCode == Keyboard.KEYCODE_CANCEL) // 完成
{
hideKeyboard();
} else if (primaryCode == Keyboard.KEYCODE_DELETE) {
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(k2);

} else if (primaryCode == Keyboard.KEYCODE_MODE_CHANGE) {// 数字键盘切换
if (isnun) {
isnun = false;
keyboardView.setKeyboard(k2);
} else {
isnun = true;
keyboardView.setKeyboard(k1);
}
} 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> list = k2.getKeys();
if (isupper) {
isupper = false;
for (Key key : list) {
if (key.label != null && isword(key.label.toString())) {
key.label = key.label.toString().toLowerCase();
key.codes[0] = key.codes[0] + 32;
}
}
} else {
isupper = true;
for (Key key : list) {
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;
}
}

MainActivity.java中的核心代码如下：

private EditText editText;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
editText = (EditText) findViewById(R.id.editText1);
editText.setOnTouchListener(new OnTouchListener() {

@Override
public boolean onTouch(View v, MotionEvent event) {
// TODO Auto-generated method stub
int numberType = editText.getInputType();
editText.setInputType(InputType.TYPE_NULL);
new KeyboardUtil(MainActivity.this, MainActivity.this, editText)
.showKeyboard();
editText.setInputType(numberType);

return true;
}
});
}

注意，下面说一下如何修改键盘按下后，Toast按键框的样式

KeyBoardView下面的这行代码：android:keyPreviewLayout="@layout/key_preview_layout"

keyPreviewLayout就是用来定义按键按下宏，提示用户按下的键提醒框样式；这个属性我翻阅文档好久才发现的；恭喜那些看文章看到最后的亲们，你们定义的键盘样式一定不会太挫；

贴一下key_preview_layout下面的代码：

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@android:color/white"
android:gravity="center"
android:text=""
android:textColor="@android:color/black"
android:textSize="20sp" />

该文件下面的android:background, android:textColor 就是控制按键提醒框中的背景和文字的样式，亲你懂的；一个满意的自定义数字键盘大功告成啦！

如需工程源代码请联系：qq：1169931878(江南怡园)

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