android自定义软键盘

参考连接：http://blog.csdn.net/hfsu0419/article/details/7924673

由于项目需求，需要对软键盘中字符键自定义，实例项目如下。
首先在layout下创建布局文件activity_main.xml：
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <EditText
        android:id="@+id/edit1" 
        android:layout_width="fill_parent" 
        android:layout_height="wrap_content"
        android:inputType="none" /> 
  
    <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="@android:color/darker_gray" 
             
            android:keyTextColor="#00ff00" 
            android:visibility="gone" /> 
    </RelativeLayout> 

</LinearLayout>

接着是创建键盘的各个键的分布文件custom.xml，并把它放在xml文件下：
<?xml version="1.0" encoding="utf-8"?>
<Keyboard xmlns:android="http://schemas.android.com/apk/res/android"
    android:horizontalGap="0.0px"
    android:keyHeight="50dp"
    android:keyWidth="10.000002%p"
    android:verticalGap="0.0px" >

    <Row>
        <Key
            android:codes="49"
            android:keyEdgeFlags="left"
            android:keyLabel="1" />
        <Key
            android:codes="50"
            android:keyLabel="2" />
        <Key
            android:codes="51"
            android:keyLabel="3" />
        <Key
            android:codes="52"
            android:keyLabel="4" />
        <Key
            android:codes="53"
            android:keyLabel="5" />
        <Key
            android:codes="54"
            android:keyLabel="6" />
        <Key
            android:codes="55"
            android:keyLabel="7" />
        <Key
            android:codes="56"
            android:keyLabel="8" />
        <Key
            android:codes="57"
            android:keyLabel="9" />
        <Key
            android:codes="48"
            android:keyEdgeFlags="right"
            android:keyLabel="0" />
    </Row>
    <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:codes="97"
            android:horizontalGap="4.999995%p"
            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:codes="-1"
            android:isModifier="true"
            android:isSticky="true"
            android:keyEdgeFlags="left"
            android:keyLabel="大写"
            android:keyWidth="14.999998%p" />
        <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:codes="-5"
            android:isRepeatable="true"
            android:keyEdgeFlags="right"
            android:keyLabel="退格"
            android:keyWidth="14.999998%p" />
    </Row>
    <Row android:rowEdgeFlags="bottom" >
        <Key
            android:codes="44"
            android:keyEdgeFlags="left"
            android:keyLabel=","
            android:keyWidth="25%p" />
        <Key
            android:codes="32"
            android:isRepeatable="true"
            android:keyLabel="空格"
            android:keyWidth="25%p" />
        <Key
            android:codes="46"
            android:keyLabel="."
            android:keyWidth="25%p" />
        <Key
            android:codes="-3"
            android:keyEdgeFlags="right"
            android:keyLabel="完成"
            android:keyWidth="25%p" />
    </Row>

</Keyboard>

创建键盘工具类KeyboardUtil.java：
public class KeyboardUtil {
        private KeyboardView keyboardView; 
        private Keyboard k1;
        public boolean isupper = false;// 是否大写 
        boolean isShow=false;
        private EditText ed; 
  
        public KeyboardUtil(Activity act, Context ctx, EditText edit) { 
                this.ed = edit; 
                k1 = new Keyboard(ctx, R.xml.custom);
                keyboardView = (KeyboardView) act.findViewById(R.id.keyboard_view); 
                keyboardView.setKeyboard(k1); 
                keyboardView.setEnabled(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 == 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 if(key.label.toString().equals("小写")){
                                key.label="大写";
                                }
                               
                        } 
                } 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; 
                                }  else if(key.label.toString().equals("大写")){
                                key.label="小写";
                                }
                        } 
                } 
        } 
  
    public void showKeyboard() { 
        int visibility = keyboardView.getVisibility(); 
        if (visibility == View.GONE || visibility == View.INVISIBLE) { 
            keyboardView.setVisibility(View.VISIBLE); 
            isShow=true;
        } 
    } 
      
    public void hideKeyboard() { 
        int visibility = keyboardView.getVisibility(); 
        if (visibility == View.VISIBLE) { 
            keyboardView.setVisibility(View.INVISIBLE); 
            isShow=false;
        } 
    } 
      
    private boolean isword(String str){ 
            String wordstr = "abcdefghijklmnopqrstuvwxyz"; 
            if (wordstr.indexOf(str.toLowerCase())>-1) { 
                        return true; 
                } 
            return false; 
    }
}

最后在activity中调用KeyboardUtil：
public class KeydemoActivity extends Activity {
private Context ctx;
private Activity act;
private EditText edit;

KeyboardUtil util;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ctx = this;
act = this;
edit = (EditText) this.findViewById(R.id.edit1);

if (android.os.Build.VERSION.SDK_INT <= 10) {
edit.setInputType(InputType.TYPE_NULL);
} else {
getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);
try {
Class<EditText> cls = EditText.class;
Method setShowSoftInputOnFocus;
// setShowSoftInputOnFocus = cls.getMethod("setShowSoftInputOnFocus", boolean.class);
setShowSoftInputOnFocus = cls.getMethod("setSoftInputShownOnFocus", boolean.class);

//4.0的是setShowSoftInputOnFocus,4.2的是setSoftInputOnFocus
setShowSoftInputOnFocus.setAccessible(false);
setShowSoftInputOnFocus.invoke(edit, false);
} catch (Exception e) {
e.printStackTrace();
}

}

util=new KeyboardUtil(act, ctx, edit);

edit.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
util.showKeyboard();
return false;
}
});



}

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {

if(keyCode==KeyEvent.KEYCODE_BACK){
if(util.isShow){
util.hideKeyboard();
}else{
finish();
}
return false;
}

return super.onKeyDown(keyCode, event);
}


}

注意红色字段，这是在处理光标出现的问题，刚开始用注销的的方法，测试不成功，调试后发现是方法名错误，改正好成功。