最完美的android仿ios开关按钮源码

首先看一下我的目录结构：

下面直接上源码：

package com.util;import android.content.Context;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Canvas;import android.graphics.Matrix;import android.graphics.Paint;import android.graphics.Rect;import android.util.AttributeSet;import android.view.MotionEvent;import android.view.View;import android.view.View.OnTouchListener;/** *  * @author Naiqi.Duan * @E-mail: itarchy@163.com * @version 创建时间：2015-8-28下午3:17:34 * @Des: */public class SlipButton extends View implements OnTouchListener{    private boolean NowChoose = false;// 记录当前按钮是否打开,true为打开,flase为关闭    private boolean isChecked;    private boolean OnSlip = false;// 记录用户是否在滑动的变量    private float DownX, NowX;// 按下时的x,当前的x    private Rect Btn_On, Btn_Off;// 打开和关闭状态下,游标的Rect .    private boolean isChgLsnOn = false;    private OnChangedListener ChgLsn;    private Bitmap bg_on, bg_off, slip_btn;    public SlipButton(Context context)    {        super(context);        init();    }    public SlipButton(Context context, AttributeSet attrs)    {        super(context, attrs);        init();    }    public SlipButton(Context context, AttributeSet attrs, int defStyle)    {        super(context, attrs, defStyle);        init();    }    private void init()    {// 初始化        bg_on = BitmapFactory.decodeResource(getResources(), R.drawable.split_left_1);        bg_off = BitmapFactory.decodeResource(getResources(), R.drawable.split_right_1);        slip_btn = BitmapFactory.decodeResource(getResources(), R.drawable.dian);        Btn_On = new Rect(0, 0, slip_btn.getWidth(), slip_btn.getHeight());        Btn_Off = new Rect(bg_off.getWidth() - slip_btn.getWidth(), 0, bg_off.getWidth(),                slip_btn.getHeight());        setOnTouchListener(this);// 设置监听器,也可以直接复写OnTouchEvent    }    @Override    protected void onDraw(Canvas canvas)    {// 绘图函数        super.onDraw(canvas);        Matrix matrix = new Matrix();        Paint paint = new Paint();        float x;        if (NowX < (bg_on.getWidth() / 2))// 滑动到前半段与后半段的背景不同,在此做判断        {            x = NowX - slip_btn.getWidth() / 2;            canvas.drawBitmap(bg_off, matrix, paint);// 画出关闭时的背景        }        else        {            x = bg_on.getWidth() - slip_btn.getWidth() / 2;            canvas.drawBitmap(bg_on, matrix, paint);// 画出打开时的背景        }        if (OnSlip)// 是否是在滑动状态,        {            if (NowX >= bg_on.getWidth())// 是否划出指定范围,不能让游标跑到外头,必须做这个判断                x = bg_on.getWidth() - slip_btn.getWidth() / 2;// 减去游标1/2的长度...            else if (NowX < 0)            {                x = 0;            }            else            {                x = NowX - slip_btn.getWidth() / 2;            }        }        else        {// 非滑动状态            if (NowChoose)// 根据现在的开关状态设置画游标的位置            {                x = Btn_Off.left;                canvas.drawBitmap(bg_on, matrix, paint);// 初始状态为true时应该画出打开状态图片            }            else                x = Btn_On.left;        }        if (isChecked)        {            canvas.drawBitmap(bg_on, matrix, paint);            x = Btn_Off.left;            isChecked = !isChecked;        }        if (x < 0)// 对游标位置进行异常判断...            x = 0;        else if (x > bg_on.getWidth() - slip_btn.getWidth())            x = bg_on.getWidth() - slip_btn.getWidth();        canvas.drawBitmap(slip_btn, x, 0, paint);// 画出游标.    }    public boolean onTouch(View v, MotionEvent event)    {        switch (event.getAction())        // 根据动作来执行代码        {            case MotionEvent.ACTION_MOVE:// 滑动                NowX = event.getX();                break;            case MotionEvent.ACTION_DOWN:// 按下                if (event.getX() > bg_on.getWidth() || event.getY() > bg_on.getHeight())                    return false;                OnSlip = true;                DownX = event.getX();                NowX = DownX;                break;            case MotionEvent.ACTION_CANCEL: // 移到控件外部                OnSlip = false;                boolean choose = NowChoose;                if (NowX >= (bg_on.getWidth() / 2))                {                    NowX = bg_on.getWidth() - slip_btn.getWidth() / 2;                    NowChoose = true;                }                else                {                    NowX = NowX - slip_btn.getWidth() / 2;                    NowChoose = false;                }                if (isChgLsnOn && (choose != NowChoose)) // 如果设置了监听器,就调用其方法..                    ChgLsn.OnChanged(NowChoose);                break;            case MotionEvent.ACTION_UP:// 松开                OnSlip = false;                boolean LastChoose = NowChoose;                if (event.getX() >= (bg_on.getWidth() / 2))                {                    NowX = bg_on.getWidth() - slip_btn.getWidth() / 2;                    NowChoose = true;                }                else                {                    NowX = NowX - slip_btn.getWidth() / 2;                    NowChoose = false;                }                if (isChgLsnOn && (LastChoose != NowChoose)) // 如果设置了监听器,就调用其方法..                    ChgLsn.OnChanged(NowChoose);                break;            default:        }        invalidate();// 重画控件        return true;    }    public void SetOnChangedListener(OnChangedListener l)    {// 设置监听器,当状态修改的时候        isChgLsnOn = true;        ChgLsn = l;    }    public interface OnChangedListener    {        abstract void OnChanged(boolean CheckState);    }    public void setCheck(boolean isChecked)    {        this.isChecked = isChecked;        NowChoose = isChecked;    }}

package com.view.SlipButton;import android.app.Activity;import android.os.Bundle;import android.widget.Button;import com.util.R;import com.util.SlipButton;import com.util.SlipButton.OnChangedListener;/** *  * @author Naiqi.Duan * @E-mail: itarchy@163.com * @version 创建时间：2015-8-28下午3:17:42 * @Des:开关按钮 */public class SlipButtonActivity extends Activity {private SlipButton sb = null;//private Button btn = null;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.slip_button_activity);findView();setListener();}/** * 设置监听 */private void setListener() {sb.SetOnChangedListener(new OnChangedListener() {public void OnChanged(boolean CheckState) {//btn.setText(CheckState ? "打开提醒" : "关闭提醒");}});}/** * 初始化控件 */private void findView() {sb = (SlipButton) findViewById(R.id.splitbutton);//btn = (Button) findViewById(R.id.ringagain);sb.setCheck(true);}}

<?xml version="1.0" encoding="utf-8"?>

源码下载链接： http://download.csdn.net/detail/itarchy/9072829

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