android虚拟键盘实现
生成虚拟键盘的DIALOG方法：
package org.socketclient.keyboard;
import org.socketclient.R;
import android.app.AlertDialog;
import android.content.Context;
import android.os.Message;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
public class KeyBoardDialog{
public Context context;
public VirtualKeyboard keybord;
public MessageHandler messageHandler;
public KeyBoardDialog(Context context,MessageHandler handler){
this.context = context;
this.messageHandler = handler;
}
public AlertDialog CreateDialog(){
AlertDialog localAlertDialog = new AlertDialog.Builder(context).create();
localAlertDialog.show();
localAlertDialog.setContentView(R.layout.virtual_keyboard_layout);
localAlertDialog.setCanceledOnTouchOutside(false);
keybord = (VirtualKeyboard) localAlertDialog.findViewById(R.id.virtualKeyboard1);
keybord.setOnTouchListener(listener);
return localAlertDialog;
}
//当前坐标点位置
int cx = 0,cy = 0;
final OnTouchListener listener = new OnTouchListener() {
@Override
public boolean onTouch(View view, MotionEvent event) {
// TODO Auto-generated method stub
cx = (int) event.getX();
cy = (int) event.getY();
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
keybord.postInvalidate(cx, cy, 0, 0);
if(keybord.currentModel != null){
Message message = new Message();
message.what = 1001;
message.obj = keybord.currentModel.code;
messageHandler.handler.sendMessage(message);
}
break;
case MotionEvent.ACTION_MOVE:
break;
case MotionEvent.ACTION_UP:
break;
}
return false;
}
};
}
消息相应类：
package org.socketclient.keyboard;
import android.annotation.SuppressLint;
import android.os.Handler;
import android.os.Message;
public abstract class MessageHandler {
public Handler handler;
public MessageHandler(){
createHandler();
}
@SuppressLint("HandlerLeak")
public void createHandler(){
handler = new Handler(){
@Override
public void handleMessage(Message msg) {
// TODO Auto-generated method stub
if(msg.what == 1001){
onTouchMessage(String.valueOf((Integer)msg.obj));
}
super.handleMessage(msg);
}
};
}
public abstract void onTouchMessage(String message);
}
自定义虚拟键盘控件
package org.socketclient.keyboard;
import java.util.ArrayList;
import org.socketclient.R;
import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.RectF;
import android.util.AttributeSet;
import android.view.View;
@SuppressLint("DrawAllocation")
public class VirtualKeyboard extends View {
public int width;
public int height;
public int keyWidth;
public int keyHeight;
public final int rows = 6;
public final int cols = 10;
public final Rect brect = new Rect(0,0,100,100);
public Paint paint;
public boolean isfirst = true;
//代表当前的按钮所代表的按键
public int[][] keyText = {
{0x11,0x12,0x20,0x0D,0x28,0x26,0x25,0x27},
{0x10,0x4C,0x5A,0x58,0x43,0x56,0x42,0x4E,0x4D,0x08},
{0x1B,0x41,0x53,0x44,0x46,0x47,0x48,0x4A,0x4B,0x2E},
{0x51,0x57,0x45,0x52,0x54,0x59,0x55,0x49,0x4F,0x50},
{0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x30}};
//当前按钮所代表的图标
public int[][] keyBitmapId = {
{R.drawable.ctrl,R.drawable.alt,R.drawable.space,R.drawable.enter,R.drawable.down,R.drawable.up,R.drawable.left,R.drawable.right},
{R.drawable.shift,R.drawable.l,R.drawable.z,R.drawable.x,R.drawable.c,R.drawable.v,R.drawable.b,R.drawable.n,R.drawable.m,R.drawable.bspace},
{R.drawable.esc,R.drawable.a,R.drawable.s,R.drawable.d,R.drawable.f,R.drawable.g,R.drawable.h,R.drawable.j,R.drawable.k,R.drawable.delete},
{R.drawable.q,R.drawable.w,R.drawable.e,R.drawable.r,R.drawable.t,R.drawable.y,R.drawable.u,R.drawable.i,R.drawable.o,R.drawable.p},
{R.drawable.n1,R.drawable.n2,R.drawable.n3,R.drawable.n4,R.drawable.n5,R.drawable.n6,R.drawable.n7,R.drawable.n8,R.drawable.n9,R.drawable.n0}};
//被按下按钮所代表图标
public int[][] keyBitmapId2 = {
{R.drawable.ctrl1,R.drawable.alt1,R.drawable.space1,R.drawable.enter1,R.drawable.down1,R.drawable.up1,R.drawable.left1,R.drawable.right1},
{R.drawable.shift1,R.drawable.l1,R.drawable.z1,R.drawable.x1,R.drawable.c1,R.drawable.v1,R.drawable.b1,R.drawable.nn1,R.drawable.m1,R.drawable.bspace1},
{R.drawable.esc1,R.drawable.a1,R.drawable.s1,R.drawable.d1,R.drawable.f1,R.drawable.g1,R.drawable.h1,R.drawable.j1,R.drawable.k1,R.drawable.delete1},
{R.drawable.q1,R.drawable.w1,R.drawable.e1,R.drawable.r1,R.drawable.t1,R.drawable.y1,R.drawable.u1,R.drawable.i1,R.drawable.o1,R.drawable.p1},
{R.drawable.n11,R.drawable.n22,R.drawable.n33,R.drawable.n44,R.drawable.n55,R.drawable.n66,R.drawable.n77,R.drawable.n88,R.drawable.n99,R.drawable.n00}};
//按钮集合
public ArrayList
//当前被按下按钮
public KeyModel currentModel = null;
public VirtualKeyboard(Context context) {
super(context);
// TODO Auto-generated constructor stub
init();
}
public VirtualKeyboard(Context context, AttributeSet attrs) {
super(context, attrs);
// TODO Auto-generated constructor stub
init();
}
public VirtualKeyboard(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
// TODO Auto-generated constructor stub
init();
}
//初始化按钮
public void init(){
paint = new Paint(Paint.ANTI_ALIAS_FLAG);
paint = new Paint(Paint.ANTI_ALIAS_FLAG);
paint.setStyle(Paint.Style.FILL);
paint.setColor(Color.WHITE); // 红色圆形
if(keylist != null)
keylist.clear();
keylist = new ArrayList
//获取布局大小
int width = getWidth();
int height = getHeight();
//计算单个按钮大小
keyWidth = width / rows;
keyHeight = height / cols;
for(int i=0; i
if(i == 0){
if(j < 2){
model = new KeyModel(i * keyWidth,
j * keyHeight,(i + 1) * keyWidth,(j+1) * keyHeight);
}else if(j == 2){
model = new KeyModel(i * keyWidth,
j * keyHeight,(i + 1) * keyWidth,(j + 2) * keyHeight);
}else if(j == 3){
model = new KeyModel(i * keyWidth,
(j + 1) * keyHeight,(i + 1) * keyWidth,(j + 3) * keyHeight);
}else{
model = new KeyModel(i * keyWidth,
(j + 2) * keyHeight,(i + 1) * keyWidth,(j + 3) * keyHeight);
}
}else{
model = new KeyModel(i * keyWidth,
j * keyHeight,(i + 1) * keyWidth,(j+1) * keyHeight);
}
//显示编号
model.index = i;
model.jndex = j;
model.bitmap = BitmapFactory.decodeResource(getResources(), keyBitmapId[i][j]);
model.code = keyText[i][j];
keylist.add(model);
}
}
}
//绘制键盘
@SuppressLint("DrawAllocation")
@Override
protected void onDraw(Canvas canvas) {
// TODO Auto-generated method stub
super.onDraw(canvas);
//绘制
if(isfirst == true){
init();
}
isfirst = false;
// 设置背景色
paint.setColor(Color.BLACK);
for(int i=0; i
RectF rectf = model.textf;
Matrix matrix = new Matrix();
// 缩放原图
matrix.postScale(1f, 1f);
// 向左旋转45度，参数为正则向右旋转
matrix.postRotate(90);
//bmp.getWidth(), 500分别表示重绘后的位图宽高
Bitmap dstbmp = Bitmap.createBitmap(model.bitmap, 0, 0, 100, 100,
matrix, true);
canvas.drawBitmap(dstbmp, brect, rectf, paint);
}
if(currentModel != null){
Matrix matrix = new Matrix();
// 缩放原图
matrix.postScale(1f, 1f);
// 向左旋转45度，参数为正则向右旋转
matrix.postRotate(90);
//bmp.getWidth(), 500分别表示重绘后的位图宽高
Bitmap bitmap = BitmapFactory.decodeResource(getResources(), keyBitmapId2[currentModel.index][currentModel.jndex]);
Bitmap dstbmp = Bitmap.createBitmap(bitmap, 0, 0, 100, 100,
matrix, true);
canvas.drawBitmap(dstbmp, brect, currentModel.textf, paint);
}
System.out.println("绘制图像了吗？");
}
//重新绘制键盘
@Override
public void postInvalidate(int left, int top, int right, int bottom) {
// TODO Auto-generated method stub
currentModel = null;
GetClickKey(left,top);
if(currentModel != null){
super.postInvalidate((int)currentModel.textf.left,(int)currentModel.textf.top,
(int)currentModel.textf.right,(int)currentModel.textf.bottom);
}
else{
super.postInvalidate(0,0,0,0);
}
}
//计算当前本按下键盘位置
public void GetClickKey(int left, int top){
int index = left / keyWidth;
int jndex = top / keyHeight;
//第一行特殊处理数据
if(index == 0){
if(jndex == 3)
jndex = 2;
if(jndex == 4 || jndex == 5)
jndex = 3;
if(jndex > 5)
jndex = jndex - 2;
}
for(int i=0; i
if(model.index == index && model.jndex == jndex){
currentModel = model;
}
}
}
//按键类
class KeyModel{
public KeyModel(int x,int y,int x1,int y1){
textf = new RectF(x,y,x1,y1);
}
//左下角位置
public RectF textf;
//显示图片
public Bitmap bitmap;
//代表的字符串
public int code;
//显示编号
public int index;
public int jndex;
}
}
调用方法：
KeyBoardDialog dialog = new KeyBoardDialog(BaseActivity1.this , new MessageHandler() {
@Override
public void onTouchMessage(String message) {
// TODO Auto-generated method stub
sendMessage("b,"+message,"Contrl",-1);
}
});
dialog.CreateDialog();
