Android自定义软键盘的实现
先看界面布局文件
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
symbols.xml 内容
KeydemoActivity.java
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
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 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