android畫虛線的自訂VIew

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package com.yesway.ycarplus.view;import android.annotation.SuppressLint;import android.content.Context;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.DashPathEffect;import android.graphics.Paint;import android.graphics.Paint.Style;import android.graphics.Path;import android.graphics.PathEffect;import android.util.AttributeSet;import android.view.View;/** * 畫虛線的一個view *  * @author liulm * */public class DottedLine extends View {    private int color = Color.WHITE;    public DottedLine(Context context, AttributeSet attrs) {        super(context, attrs);    }    @Override    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {        setMeasuredDimension(widthMeasureSpec, heightMeasureSpec);        super.onMeasure(widthMeasureSpec, heightMeasureSpec);    }    @SuppressLint("DrawAllocation")    @Override    protected void onDraw(Canvas canvas) {        super.onDraw(canvas);        Paint p = new Paint();        p.setAntiAlias(true);        p.setStyle(Style.STROKE);        p.setColor(color);        p.setStrokeWidth(10);        PathEffect effects = new DashPathEffect(new float[] { 0, 10, 35, 2 }, 1);        Path path = new Path();        path.moveTo(0, 0);        path.lineTo(0, getMeasuredHeight());        path.lineTo(getMeasuredWidth(), getMeasuredHeight());        p.setPathEffect(effects);        canvas.drawPath(path, p);    }    /**     * 設定顏色     *      * @param color     */    public void setColor(int color) {        this.color = color;        invalidate();    }    /**     * 設定顏色值     *      * @param color     */    public void setColor(String color) {        this.color = Color.parseColor(color);        invalidate();    }}

 

android畫虛線的自訂VIew