Android仿淘宝物流信息TimeLineView

淘宝物流信息TimeLine的制作方法：

仿照的TimeLine效果图：

代码实现：

package com.zms.timelineview;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.view.View;

public class TimeLineView extends View {

private Paint mPaint;
/**
* 首个节点的外半径
*/
private float timelineHeadRadius;
/**
* 首个节点的中心颜色
*/
private int timelineHeadColor;
/**
* 首个节点的边缘颜色
*/
private int timelineHeadColorEdge;
/**
* 其他节点的颜色值
*/
private int timelineOtherColor;
/**
* 时间线的节点数
*/
private int timelineCount;
/**
* 时间轴的位置
*/
private int viewWidth;
/**
* 时间轴到距离顶部的距离
*/
private int marginTop;
/**
* 时间轴的节点的半径
*/
private int timelineRadius;
/**
* 时间轴节点之间的距离
*/
private int timelineRadiusDistance;
/**
* 时间轴的宽度
*/
private int timelineWidth;
/**
* 时间轴的高度
*/
private float timeLineViewHeight;

public TimeLineView(Context context) {
this(context, null);
}

public TimeLineView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}

public TimeLineView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init(context, attrs, defStyle);
}

/**
* 初始化
*
* @param context
* @param attrs
* @param defStyle
*/
private void init(Context context, AttributeSet attrs, int defStyle) {

final TypedArray a = getContext().obtainStyledAttributes(attrs,
 R.styleable.TimeLineView, defStyle, 0);
timelineRadiusDistance = (int) a.getDimension(
 R.styleable.TimeLineView_timelineRadiusDistance,
 convertDIP2PX(context, 20));
timelineHeadRadius = a.getDimension(
 R.styleable.TimeLineView_timelineHeadRadius,
 convertDIP2PX(context, 6));
timelineRadius = (int) a.getDimension(
 R.styleable.TimeLineView_timelineRadius,
 convertDIP2PX(context, 5));
timelineHeadColor = a.getColor(
 R.styleable.TimeLineView_timelineHeadColor,
 Color.parseColor("#25ae5f")); // 中心深色
timelineHeadColorEdge = a.getColor(
 R.styleable.TimeLineView_timelineHeadColorEdge,
 Color.parseColor("#b9e5cc")); // 边缘浅色
timelineOtherColor = a.getColor(
 R.styleable.TimeLineView_timelineOtherColor,
 Color.parseColor("#cccccc"));
timelineCount = a.getInteger(R.styleable.TimeLineView_timelineCount, 0);
timelineWidth = (int) a.getDimension(
 R.styleable.TimeLineView_timelineWidth,
 convertDIP2PX(context, 1));
marginTop = (int) a.getDimension(
 R.styleable.TimeLineView_timelineMarginTop,
 convertDIP2PX(context, 50));
a.recycle();

mPaint = new Paint();
mPaint.setAntiAlias(true);

}

@Override
protected void onDraw(Canvas canvas) {
// 默认设置时间轴的位置位于view的中间
viewWidth = getMeasuredWidth() / 2;
// 设置第一个节点的颜色
mPaint.setColor(timelineHeadColor);
/**
 * 根据时间轴的节点数目，画对应的节点和轴
 */
for (int j = 1; j <= timelineCount; j++) {

/**
 * 当j==1，画第一个节点的时候，有点特殊，我们需要在节点的外面再换一个圆环
 */
 if (j == 1) {
 // 画笔设置为空心
 canvas.drawCircle(viewWidth, timelineHeadRadius + marginTop,
  timelineRadius, mPaint);
 mPaint.setStyle(Paint.Style.STROKE);
 mPaint.setStrokeWidth(5.0f);
 // 画第一个节点外围的圆环
 mPaint.setColor(timelineHeadColorEdge);
 canvas.drawCircle(viewWidth, timelineHeadRadius + marginTop,
  timelineHeadRadius, mPaint);
 // 设置画笔颜色，画其他时间节点的颜色
 mPaint.setColor(timelineOtherColor);
 // 画笔设置为实心
 mPaint.setStyle(Paint.Style.FILL);
 /**
  * 画第一个节点下面的轴
  */
 canvas.drawRect(new Rect(viewWidth - timelineWidth / 2,
  (int) (2 * timelineHeadRadius + marginTop) + 5,
  viewWidth + timelineWidth / 2, (int) (2
   * timelineHeadRadius + timelineRadiusDistance
   + marginTop + 5)), mPaint);
 continue;
 }
 /**
 * 画时间轴的节点,即画圆形 圆心的x都是一样的,view的中间
 * 圆心的y的计算是根据节点的位置来计算的,例如:第一个节点的y是根据第一个节点距离上面的距离加上第一个节点的半径
 * :timelineHeadRadius + marginTop
 * 其余的节点就是在一个节点的y的基础上,加上两倍半径和节点之间的轴的长度＊节点数:(2 * timelineRadius +
 * timelineRadiusDistance) * (j - 1) + timelineHeadRadius -
 * timelineRadius + marginTop
 *
 */
 canvas.drawCircle(viewWidth,
  (2 * timelineRadius + timelineRadiusDistance) * (j - 1) + 2
   * timelineHeadRadius - timelineRadius + marginTop,
  timelineRadius, mPaint);
 /**
 *  画其余的轴 left:每个轴距离左边距离都是一样的时间轴的中心位置-1/2的时间轴的宽度 viewWidth -
 * timelineWidth / 2 top: (int) (j * (2 * timelineRadius +
 * timelineRadiusDistance) - timelineRadiusDistance + 2 *
 * (timelineHeadRadius-timelineRadius)+ marginTop)
 * right:每个轴距离右边距离都是一样的时间轴的中心位置+1/2的时间轴的宽度 viewWidth +
 * timelineWidth / 2 bottom: (int) (j * (2 * timelineRadius +
 * timelineRadiusDistance) + 2 *
 * (timelineHeadRadius-timelineRadius)+ marginTop)
 */

canvas.drawRect(
  new Rect(
   viewWidth - timelineWidth / 2,
   (int) (j
    * (2 * timelineRadius + timelineRadiusDistance)
    - timelineRadiusDistance + 2
    * (timelineHeadRadius - timelineRadius) + marginTop),
   viewWidth + timelineWidth / 2,
   (int) (j
    * (2 * timelineRadius + timelineRadiusDistance)
    + 2 * (timelineHeadRadius - timelineRadius) + marginTop)),
  mPaint);
}
}

public float getTimelineHeadRadius() {
return timelineHeadRadius;
}

public void setTimelineHeadRadius(float timelineHeadRadius) {

this.timelineHeadRadius = timelineHeadRadius;
invalidate();
}

public int getTimelineHeadColor() {
return timelineHeadColor;
}

public void setTimelineHeadColor(int timelineHeadColor) {

this.timelineHeadColor = timelineHeadColor;
invalidate();
}

public int getTimelineOtherColor() {
return timelineOtherColor;
}

public void setTimelineOtherColor(int timelineOtherColor) {
this.timelineOtherColor = timelineOtherColor;
invalidate();
}

public int getTimelineCount() {
return timelineCount;
}

public void setTimelineCount(int timelineCount) {
this.timelineCount = timelineCount;
invalidate();
}

public int getMarginTop() {
return marginTop;
}

public void setMarginTop(int marginTop) {

this.marginTop = marginTop;
invalidate();
}

public int getTimelineRadius() {
return timelineRadius;
}

public void setTimelineRadius(int timelineRadius) {

this.timelineRadius = timelineRadius;
invalidate();
}

public int getTimelineRadiusDistance() {
return timelineRadiusDistance;
}

public void setTimelineRadiusDistance(int timelineRadiusDistance) {

this.timelineRadiusDistance = timelineRadiusDistance;
invalidate();
}

public int getTimelineWidth() {
return timelineWidth;
}

public void setTimelineWidth(int timelineWidth) {
this.timelineWidth = timelineWidth;
}

public float getTimeLineViewHeight() {
this.timeLineViewHeight = getMarginTop() + getTimelineCount()
 * (2 * getTimelineRadius() + getTimelineRadiusDistance());
return timeLineViewHeight;
}

public void setTimeLineViewHeight(float timeLineViewHeight) {
this.timeLineViewHeight = timeLineViewHeight;
invalidate();

}

public int getViewWidth() {
return viewWidth;
}

public void setViewWidth(int viewWidth) {
this.viewWidth = viewWidth;
invalidate();
}

/**
* 转换dip为px
*/
public static int convertDIP2PX(Context context, int dip) {
float scale = context.getResources().getDisplayMetrics().density;
return (int) (dip * scale + 0.5f * (dip >= 0 ? 1 : -1));
}

}

来源：http://blog.csdn.net/zhoumushui/article/details/54566146