分类： Android平台
2015-11-02 15:35:47
本项目由开发者 阿拉灯神灯提供：
大图实现：通过自定义PercentageBar实现，
部分代码如下：
public class PercentageBar extends View{
//画线的画笔
private Paint mLinePaint;
//画柱状图的画笔
private Paint mBarPaint;
//写字的画笔
private Paint mTextPaint;
//开始X坐标
private int startX;
//开始Y坐标
private int startY;
//结束X坐标
private int stopX;
//测量值 宽度
private int measuredWidth;
//测量值 高度
private int measuredHeight;
//每条柱状图的宽度
private int barWidth;
//设置最大值，用于计算比例
private float max;
//设置每条柱状图的目标值，除以max即为比例
private ArrayList
//设置一共有几条柱状图
private int totalBarNum;
//设置每条柱状图的当前比例
private Float[] currentBarProgress;
//每条竖线的当前比例
private int currentVerticalLineProgress;
//最上面一条横线的比例
private int currentHorizentalLineProgress;
//每条柱状图的名字
private ArrayList
//每条竖线之间的间距
private int deltaX;
//每条柱状图之间的间距
private int deltaY;
//一共有几条竖线
private int verticalLineNum;
//单位
private String unit;
//每条竖线之间相差的值
private float numPerUnit;
public PercentageBar(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init(context);
}
public PercentageBar(Context context, AttributeSet attrs) {
super(context, attrs);
init(context);
}
public PercentageBar(Context context) {
super(context);
init(context);
}
private void init(Context context) {
//设开始X坐标为0
startX =0;
//设开始Y坐标为50
startY =50;
//初始化柱状图画笔
mBarPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
mBarPaint.setColor(0xff40E0D0);
mBarPaint.setStyle(Style.FILL);
//初始化线的画笔
mLinePaint = new Paint(Paint.ANTI_ALIAS_FLAG);
mLinePaint.setStyle(Style.FILL);
mLinePaint.setColor(0xffcdcdcd);
mLinePaint.setStrokeWidth(2);
}
/**
* 测量方法，主要考虑宽和高设置为wrap_content的时候，我们的view的宽高设置为多少
* @param widthMeasureSpec
* @param heightMeasureSpec
*/
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
int widthSpecMode = MeasureSpec.getMode(widthMeasureSpec);
int widthSpecSize = MeasureSpec.getSize(widthMeasureSpec);
int heightSpecMode = MeasureSpec.getMode(heightMeasureSpec);
int heightSpecSize = MeasureSpec.getSize(heightMeasureSpec);
//如果宽和高都为wrap_content的时候，我们将宽设置为我们输入的max值，也就是柱状图的最大值
//高度为每条柱状图的宽度加上间距再乘以柱状图条数再加上开始Y值后得到的值
if (widthSpecMode == MeasureSpec.AT_MOST && heightSpecMode == MeasureSpec.AT_MOST) {
setMeasuredDimension((int) max, startY+10+totalBarNum*(barWidth+2*10));
//如果宽度为wrap_content 高度为match_parent或者精确数值的时候
}else if (widthSpecMode == MeasureSpec.AT_MOST) {
//宽度设置为max，高度为父容器高度
setMeasuredDimension((int) max, heightSpecSize);
//如果宽度为match_parent或者精确数值的时候，高度为wrap_content
}else if (heightSpecMode == MeasureSpec.AT_MOST) {
//宽度设置为父容器的宽度，高度为每条柱状图的宽度加上间距再乘以柱状图条数再加上开始Y值后得到的值
setMeasuredDimension(widthSpecSize, startY+10+totalBarNum*(barWidth+2*10));
}
}
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
super.onLayout(changed, left, top, right, bottom);
//获得测量后的宽度
measuredWidth = getMeasuredWidth();
//获得测量后的高度
measuredHeight = getMeasuredHeight();
//计算结束X的值
stopX = measuredWidth-barWidth;
//计算每条竖线之间的间距
deltaX = (stopX-(startX+7*barWidth/5))/verticalLineNum;
//计算每条柱状图之间的间距
deltaY = (measuredHeight-startY-barWidth*totalBarNum)/totalBarNum;
//计算出每条竖线所代表的数值
numPerUnit = max/verticalLineNum;
//初始化最上面横线的初始进度
currentHorizentalLineProgress = stopX;
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
/**
* 画柱状图
*/
for(int i = 0 ; i
currentBarProgress[i]+=10;
postInvalidateDelayed(10);
}
canvas.drawText(respName.get(i),startX,startY+deltaY+i*(deltaY+barWidth)+3*barWidth/4, mTextPaint);
canvas.drawRect(startX+7*barWidth/5,
startY+deltaY+i*(deltaY+barWidth), currentBarProgress[i],
startY+deltaY+i*(deltaY+barWidth)+barWidth, mBarPaint);
}
/**
* 画竖线
*/
for(int i=0 ; i
currentVerticalLineProgress+=3;
postInvalidateDelayed(10);
}
canvas.drawLine((startX+7*barWidth/5)+(i+1)*deltaX, startY,
(startX+7*barWidth/5)+(i+1)*deltaX, currentVerticalLineProgress,
mLinePaint);
canvas.drawText(numPerUnit*(i+1)+unit, (startX+7*barWidth/5)+(i+1)*deltaX-barWidth, startY-barWidth/5, mTextPaint);
}
/**
* 画最上面的横线
*/
if (currentHorizentalLineProgress>startX+7*barWidth/5) {
currentHorizentalLineProgress-=10;
postInvalidateDelayed(10);
}
canvas.drawLine(stopX, startY, currentHorizentalLineProgress, startY, mLinePaint);
}
/**
* 设置每个柱状图的宽度
* @param width
*/
public void setBarWidth(int width){
this.barWidth = width;
mTextPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
mTextPaint.setTextSize(3*barWidth/5);
mTextPaint.setStrokeWidth(1);
mTextPaint.setColor(0xffababab);
}
/**
* 设置最大值
* @param max
*/
public void setMax(float max){
this.max = max;
}
/**
* 设置一共有几个柱状图
* @param totalNum
*/
public void setTotalBarNum(int totalNum){
this.totalBarNum = totalNum;
currentBarProgress = new Float[totalNum];
for(int i = 0 ; i
}
}
/**
* 分别设置每个柱状图的目标值
* @param respTarget
*/
public void setRespectTargetNum(ArrayList
this.respTarget = respTarget;
}
/**
* 分别设置每个柱状图的名字
* @param respName
*/
public void setRespectName(ArrayList
this.respName = respName;
}
/**
* 设置单位
* @param unit
*/
public void setUnit(String unit){
this.unit = unit;
}
/**
* 设置有几条竖线
* @param num
*/
public void setVerticalLineNum(int num){
this.verticalLineNum = num;
}
}
调用：
respectTarget = new ArrayList
respName = new ArrayList
respectTarget.add(35.0f);
respectTarget.add(20.0f);
respectTarget.add(18.0f);
respectTarget.add(15.0f);
respectTarget.add(10.0f);
respectTarget.add(8.0f);
respectTarget.add(5.0f);
respName.add("滴滴");
respName.add("小米");
respName.add("京东");
respName.add("美团");
respName.add("魅族");
respName.add("酷派");
respName.add("携程");
mBarGraph = (PercentageBar) findViewById(R.id.bargraph);
mBarGraph.setRespectTargetNum(respectTarget);
mBarGraph.setRespectName(respName);
mBarGraph.setTotalBarNum(7);
mBarGraph.setMax(40);
mBarGraph.setBarWidth(50);
mBarGraph.setVerticalLineNum(4);
mBarGraph.setUnit("亿元");
