自定义水波扩散图片

公司产品需要一个按钮有一个水波纹扩散的效果，就简单的做了一个。先上图

然后就是源码了，代码很简单 我就不解释了，就是想留着做个纪念

package com.example.administrator.myapplication.view;import android.animation.ObjectAnimator;import android.content.Context;import android.content.res.TypedArray;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.graphics.RectF;import android.os.Handler;import android.os.Message;import android.support.annotation.Nullable;import android.util.AttributeSet;import android.util.Log;import android.view.View;import android.widget.ImageView;import com.example.administrator.myapplication.R;/** * Created by Xuyan on 2017/6/13 0013. */public class MyImageView extends android.support.v7.widget.AppCompatImageView {    /**     * 画边框的画笔     */    private Paint paint;    /**     *边框的颜色     */    private int bordColor;    /**     * 边框总共的数量     * @param context     */    private final static int Total = 3;    /**     * 是否要创建新的边框     * @param context     */    private boolean isBord = true;    /**     * 边框半径     */    private float bordRadio = 0;    private RectF rectF ;    private int alpha=255;    private int bordWith =10;    public MyImageView(Context context) {        super(context);    }    public MyImageView(Context context, @Nullable AttributeSet attrs) {        super(context, attrs);        init();    }    public MyImageView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {        super(context, attrs, defStyleAttr);        TypedArray a =context.obtainStyledAttributes(attrs, R.styleable.MyImageView);        bordColor = a.getColor(R.styleable.MyImageView_bordcolor, Color.parseColor("#ffffff"));        a.recycle();        init();    }    public void init(){        paint = new Paint();        paint.setAntiAlias(true);        paint.setStrokeWidth(bordWith);        paint.setStyle(Paint.Style.STROKE);        rectF = new RectF();    }    @Override    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {        super.onMeasure(widthMeasureSpec, heightMeasureSpec);        int with = setMeasure(widthMeasureSpec,100);        int height = setMeasure(heightMeasureSpec,100);        if (with!=height){            with=Math.max(with,height);            height =with;        }        setMeasuredDimension(with,height);        rectF.set(0,0,getMeasuredWidth(),getMeasuredWidth());        new Thread(runnable).start();    }    public int setMeasure(int MeasureSpec,int defultsize){        int model = View.MeasureSpec.getMode(MeasureSpec);        int size = View.MeasureSpec.getSize(MeasureSpec);        int result;        if (model==View.MeasureSpec.EXACTLY){            result = size;        }else {            if (model== View.MeasureSpec.AT_MOST){                result = Math.max(size,defultsize);            }else {                result = defultsize;            }        }        return result;    }    @Override    protected void onDraw(Canvas canvas) {        super.onDraw(canvas);        for (int i=0;i<Total;i++){            canvas.drawCircle(getMeasuredHeight()/2,getMeasuredHeight()/2,bordRadio-i*100,paint);        }    }    Handler hanl = new Handler(){        @Override        public void handleMessage(Message msg) {            super.handleMessage(msg);            if (msg.what==0){                paint.setAlpha(alpha);                invalidate();            }        }    };    Runnable runnable = new Runnable() {        @Override        public void run() {            while (true){                if (bordRadio>getMeasuredWidth()/2){                    bordRadio = 0;                    bordWith =10;                    alpha=255;                }else {                    bordRadio=bordRadio+2;                    alpha =(alpha-(int)(bordRadio/255))<0?0:(alpha-(int)(bordRadio/255));                    bordWith +=10;                }                try {                    Thread.sleep(20);                } catch (InterruptedException e) {                    e.printStackTrace();                }                hanl.sendEmptyMessage(0);            }        }    };    /**     * 设置圆环半径     */    public  void setRadio(int bordRadio){        if (bordRadio>getMeasuredHeight()/2){            this.bordRadio = getMeasuredHeight()/2;        }else {            this.bordRadio = bordRadio;        }    }    /**     * 设置圆环初始的边框宽度     */    public void setBordWith(int bordWith){        if (bordWith>50||bordWith<0){            bordWith=10;        }else {            this.bordWith =bordWith;        }    }}