Android折线图

CommonChartView.java:
package com.cz.hello.widget;/** *@版权所有者 iamwsbear@gmail.com */import android.annotation.SuppressLint;import android.content.Context;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.graphics.Paint.Style;import android.graphics.Path;import android.graphics.Point;import android.util.AttributeSet;import android.view.View;import java.util.ArrayList;import java.util.List;import java.util.Random;import com.cz.hello.R;import com.cz.hello.utils.Utils;public class CommonChartView extends View {    private int bgColor = Color.rgb(Integer.parseInt("4d", 16),            Integer.parseInt("af", 16), Integer.parseInt("ea", 16));// 整体的背景色    private int singleColumnFillColor = Color.rgb(Integer.parseInt("e7", 16),            Integer.parseInt("e7", 16), Integer.parseInt("e9", 16));// 单数列的背景色    private int doubleColumnFillColor = Color.rgb(Integer.parseInt("4d", 16),            Integer.parseInt("af", 16), Integer.parseInt("ea", 16));// 单数行的背景色    private int fillDownColor = Color.rgb(Integer.parseInt("45", 16),            Integer.parseInt("64", 16), Integer.parseInt("bf", 16));// 填充下面部分的背景色    private int xyLineColor = Color.rgb(Integer.parseInt("a9", 16),            Integer.parseInt("d8", 16), Integer.parseInt("f5", 16));// 表格的线颜色    private int chartLineColor = Color.WHITE;// 绘制趋势线的颜色    private int shadowLineColor = Color.rgb(Integer.parseInt("1a", 16),            Integer.parseInt("49", 16), Integer.parseInt("84", 16));// 趋势线阴影的颜色    private String yUnit = "℃";// Y轴单位    private boolean isDrawY = false;// 是否绘制Y轴    private boolean isDrawX = true;// 是否绘制X轴    private boolean isDrawInsideX = true;// 是否绘制内部的X轴    private boolean isDrawInsedeY = false;// 是否绘制内部的Y轴    private boolean isFillDown = false;// 是否填充点的下面部分    private boolean isFillUp = false;// 是否填充点的上面部分（暂未实现）    private boolean isAppendX = true;// X轴是否向左突出一点    private boolean isDemo = false;// 是否demo测试数据    private int ScreenX;// view的宽度    private int ScreenY;// view的高度    private int numberOfX = 6;// 默认X轴放6个值    private int numberOfY = 5;// 默认Y轴放5个值（越多显示的值越精细）    private int paddingTop = 10;// 默认上下左右的padding    private int paddingLeft = Utils.getScreenW(getContext())/12;// 默认上下左右的padding    private int paddingRight = Utils.getScreenW(getContext())/12;// 默认上下左右的padding    private int paddingDown = 50;// 默认上下左右的padding    private int appendXLength = 10;// 向左X轴突出的长度    private float maxNumber = 0;// Y轴最大值    private List> pointList;// 传入的数据    private List bitmapList;// 传入的颜色值    private List lineColorList;    private List titleXList;// 传入的X轴标题    private List titleYList;// 计算得出的Y轴标题    public CommonChartView(Context context) {        super(context);        demo();    }    public CommonChartView(Context context, AttributeSet attr) {        super(context, attr);        demo();    }        private void demo() {        if (!isDemo) {            return;        }        pointList = new ArrayList>();        titleXList = new ArrayList();lineColorList = new ArrayList();        lineColorList.add(Color.WHITE);        lineColorList.add(Color.GREEN);        lineColorList.add(Color.YELLOW);        // TODO 测试        for (int i = 0; i < 3; i++) {            List pointInList = new ArrayList();            for (int j = 0; j < 6; j++) {                Random r = new Random();                Float z = r.nextFloat()*100;                pointInList.add(z);                titleXList.add("12." + (i + 1) + "1");            }            pointList.add(pointInList);        }    }    /**     * 计算得出View的宽高     *      * @param widthMeasureSpec     * @param heightMeasureSpec     */    @Override    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {        int measuredHeight = measureHeight(heightMeasureSpec);        int measuredWidth = measureWidth(widthMeasureSpec);        setMeasuredDimension(measuredWidth, measuredHeight);        ScreenX = measuredWidth;        ScreenY = measuredHeight;    }    private int measureHeight(int measureSpec) {        int specMode = MeasureSpec.getMode(measureSpec);        int specSize = MeasureSpec.getSize(measureSpec);        int result = 300;        if (specMode == MeasureSpec.AT_MOST) {            result = specSize;        }        else if (specMode == MeasureSpec.EXACTLY) {            result = specSize;        }        return result;    }    private int measureWidth(int measureSpec) {        int specMode = MeasureSpec.getMode(measureSpec);        int specSize = MeasureSpec.getSize(measureSpec);        int result = 450;        if (specMode == MeasureSpec.AT_MOST) {            result = specSize;        }        else if (specMode == MeasureSpec.EXACTLY) {            result = specSize;        }        return result;    }    /**     * 绘画View方法     *      * @param canvas     */    @SuppressLint("DrawAllocation")    @Override    protected void onDraw(Canvas canvas) {        super.onDraw(canvas);        maxNumber = 0;        List listX = initNumberOfX();// 计算出X轴平均后的坐标        List listY = initNumberOfY();// 计算出Y轴平均后的坐标        canvas.drawColor(bgColor);// 背景色        fillColor(listX, canvas);// 根据需求，对每一个框做不同的填充颜色        // 画背景表格        Paint paint = new Paint();        paint.setColor(xyLineColor);// //表格线颜色        if (isDrawX) {            int appendX = 0;            if (isAppendX) {                appendX = appendXLength;            }            canvas.drawLine(paddingLeft - appendX, paddingTop + listY.get(0).y, listY.get(0).x                    + paddingLeft,                    paddingTop + listY.get(0).y, paint);        }        if (isDrawY) {            canvas.drawLine(listX.get(0).x, paddingTop, listX.get(0).x, listX.get(0).y + paddingTop                    , paint);        }        if (isDrawInsedeY) {// 绘制纵向的            for (Point point : listX) {                if (!isDrawX) {                    isDrawX = !isDrawX;                    continue;                }                canvas.drawLine(point.x, paddingTop, point.x, point.y + paddingTop, paint);            }        }        if (isDrawInsideX) {// 绘制横向的            for (Point point : listY) {                if (!isDrawY) {                    isDrawY = !isDrawY;                    continue;                }                int appendX = 0;                if (isAppendX) {                    appendX = appendXLength;                }                canvas.drawLine(paddingLeft - appendX, paddingTop + point.y, point.x + paddingLeft,                        paddingTop + point.y, paint);            }        }        setYTitle(listY, canvas);// 画折线图Y的单位，同时计算出最大的Y轴值        List> positionList = countListPosition(listX);// 计算像素位置        drawFill(canvas, positionList);// 填充折线和边框        drawChart(canvas, positionList);// 画折线        drawCicle(canvas, positionList);// 画点        setXTitle(listX, canvas);// 画折线图X的单位    }    private void drawFill(Canvas canvas, List> positionList) {        if (!isFillDown) {            return;        }        Paint paint = new Paint();        paint.setAntiAlias(true);        paint.setColor(fillDownColor);        paint.setAlpha(76);        for (int i = 0; i < positionList.size(); i++) {            Path path = new Path();            path.moveTo(paddingLeft, ScreenY - paddingDown);            for (int j = 0; j < positionList.get(i).size(); j++) {                path.lineTo(positionList.get(i).get(j).x, positionList.get(i).get(j).y);            }            path.lineTo(ScreenX - paddingRight, ScreenY - paddingDown);            path.close();            canvas.drawPath(path, paint);        }    }    private void drawCicle(Canvas canvas, List> positionList) {        Paint paint = new Paint();        paint.setAntiAlias(true);        paint.setColor(Color.GREEN);        // Bitmap bitmap = BitmapFactory.decodeResource(getResources(),        // R.drawable.comm_chart_point);        int resouceId;        for (int i = 0; i < positionList.size(); i++) {            // canvas.drawCircle(positionList.get(i).x, positionList.get(i).y,            // 7, paint);            if (bitmapList != null && bitmapList.get(i) != null) {                resouceId = bitmapList.get(i);            } else {                resouceId = R.drawable.comm_chart_point;            }            Bitmap bitmap = BitmapFactory.decodeResource(getResources(),                    resouceId);            for (int j = 0; j < positionList.get(i).size(); j++) {                canvas.drawBitmap(bitmap, positionList.get(i).get(j).x + 0.5f - bitmap.getWidth()                        / 2,                        positionList.get(i).get(j).y + 0.5f - bitmap.getHeight() / 2, paint);            }        }    }    private List> countListPosition(List listX) {        List> positionList = new ArrayList>();        if (pointList == null) {            pointList = new ArrayList>();            List pointInList = new ArrayList();            for (int i = 0; i < numberOfX; i++) {                pointInList.add(0f);            }            pointList.add(pointInList);        }        for (int i = 0; i < pointList.size(); i++) {            List positionInList = new ArrayList();            for (int j = 0; j < pointList.get(i).size(); j++) {                Point point = new Point();                Float z = pointList.get(i).get(j);                point.x = listX.get(j).x;                point.y = listX.get(j).y + paddingTop                        - (int) ((listX.get(j).y) * (float) z / (float) maxNumber);                positionInList.add(point);            }            positionList.add(positionInList);        }        return positionList;    }    private void drawChart(Canvas canvas, List> positionList) {        Paint paint = new Paint();        paint.setAntiAlias(true);        paint.setColor(chartLineColor);        paint.setStrokeWidth(3);// 默认线宽为3，到时候提升到全局变量，用于设置        Paint shadowPaint = new Paint();        shadowPaint.setAntiAlias(true);        shadowPaint.setColor(shadowLineColor);        shadowPaint.setStrokeWidth(1);// 默认线宽为3，到时候提升到全局变量，用于设置        shadowPaint.setAlpha(178);        for (int i = 0; i < positionList.size(); i++) {            if (lineColorList != null && lineColorList.get(i) != null) {                paint.setColor(lineColorList.get(i));            }            for (int j = 0; j < positionList.get(i).size() - 1; j++) {                canvas.drawLine(positionList.get(i).get(j).x, positionList.get(i).get(j).y + 2,                        positionList.get(i).get(j + 1).x, positionList.get(i).get(j + 1).y + 2,                        shadowPaint);                canvas.drawLine(positionList.get(i).get(j).x, positionList.get(i).get(j).y,                        positionList.get(i).get(j + 1).x, positionList.get(i).get(j + 1).y, paint);            }        }    }    private void fillColor(List listX, Canvas canvas) {        Paint paint = new Paint();        paint.setStyle(Style.FILL);        for (int i = 0; i < numberOfX - 1; i++) {            if (i % 2 == 0) {                paint.setColor(singleColumnFillColor);                paint.setAlpha(102);            } else {                paint.setColor(doubleColumnFillColor);                paint.setAlpha(255);            }            canvas.drawRect(listX.get(i).x, paddingTop, listX.get(i + 1).x, ScreenY - paddingDown,                    paint);        }    }    private void setYTitle(List listY, Canvas canvas) {        Paint paint = new Paint();        paint.setColor(Color.WHITE);        if (pointList == null) {            titleYList = new ArrayList();            for (int i = 1; i <= numberOfY; i++) {                titleYList.add(String.valueOf(100 / i));            }        } else {            for (int i = 0; i < pointList.size(); i++) {                for (int j = 0; j < pointList.get(i).size(); j++) {                    if (pointList.get(i).get(j) > maxNumber) {                        maxNumber = pointList.get(i).get(j);                    }                }            }            maxNumber = maxNumber + maxNumber / 3;            titleYList = new ArrayList();            for (int i = 0; i < numberOfY; i++) {                titleYList.add(String.valueOf((int) (0 + i * (maxNumber / (numberOfY - 1)))));            }        }        for (int i = 0; i < numberOfY; i++) {            int appendX = 0;            if (isAppendX) {                appendX = appendXLength;            }            if (i != 0) {                canvas.drawText(titleYList.get(i), paddingLeft - appendX - paddingLeft / 3,                        paddingTop                                + listY.get(i).y, paint);            } else {                canvas.drawText(titleYList.get(i) + yUnit,                        paddingLeft - appendX - paddingLeft / 3, paddingTop                                + listY.get(i).y, paint);            }        }    }    private void setXTitle(List listX, Canvas canvas) {        Paint paint = new Paint();        paint.setColor(Color.WHITE);        if (titleXList == null) {            titleXList = new ArrayList();            for (int i = 1; i <= numberOfX; i++) {                titleXList.add("title" + i);            }        }        for (int i = 0; i < numberOfX; i++) {            canvas.save();            canvas.rotate(30, listX.get(i).x,                    listX.get(i).y + paddingTop + paddingDown / 2);            canvas.drawText(titleXList.get(i), listX.get(i).x-10,                    listX.get(i).y + paddingTop + paddingDown / 2                    , paint);            canvas.restore();        }    }    private List initNumberOfX() {        int num = (ScreenX - paddingLeft - paddingRight) / (numberOfX - 1);        List list = new ArrayList();        for (int i = 0; i < numberOfX; i++) {            Point point = new Point();            point.y = ScreenY - paddingDown - paddingTop;            point.x = paddingLeft + num * i;            list.add(point);        }        return list;    }    private List initNumberOfY() {        int num = (ScreenY - paddingDown - paddingTop) / (numberOfY - 1);        List list = new ArrayList();        for (int i = 0; i < numberOfY; i++) {            Point point = new Point();            point.x = ScreenX - paddingLeft - paddingRight;            point.y = ScreenY - paddingDown - paddingTop - num * i;            list.add(point);        }        return list;    }    public boolean isDrawY() {        return isDrawY;    }    public void setDrawY(boolean isDrawY) {        this.isDrawY = isDrawY;    }    public boolean isDrawX() {        return isDrawX;    }    public void setDrawX(boolean isDrawX) {        this.isDrawX = isDrawX;    }    public boolean isFillDown() {        return isFillDown;    }    public void setFillDown(boolean isFillDown) {        this.isFillDown = isFillDown;    }    public boolean isFillUp() {        return isFillUp;    }    public void setFillUp(boolean isFillUp) {        this.isFillUp = isFillUp;    }    public int getScreenX() {        return ScreenX;    }    public void setScreenX(int screenX) {        ScreenX = screenX;    }    public int getScreenY() {        return ScreenY;    }    public void setScreenY(int screenY) {        ScreenY = screenY;    }    public int getNumberOfX() {        return numberOfX;    }    public void setNumberOfX(int numberOfX) {        this.numberOfX = numberOfX;    }    public int getNumberOfY() {        return numberOfY;    }    public void setNumberOfY(int numberOfY) {        this.numberOfY = numberOfY;    }    public boolean isDrawInsideX() {        return isDrawInsideX;    }    public void setDrawInsideX(boolean isDrawInsideX) {        this.isDrawInsideX = isDrawInsideX;    }    public boolean isDrawInsedeY() {        return isDrawInsedeY;    }    public void setDrawInsedeY(boolean isDrawInsedeY) {        this.isDrawInsedeY = isDrawInsedeY;    }    public boolean isAppendX() {        return isAppendX;    }    public void setAppendX(boolean isAppendX) {        this.isAppendX = isAppendX;    }    public int getPaddingTop() {        return paddingTop;    }    public void setPaddingTop(int paddingTop) {        this.paddingTop = paddingTop;    }    public int getPaddingLeft() {        return paddingLeft;    }    public void setPaddingLeft(int paddingLeft) {        this.paddingLeft = paddingLeft;    }    public int getPaddingRight() {        return paddingRight;    }    public void setPaddingRight(int paddingRight) {        this.paddingRight = paddingRight;    }    public int getPaddingDown() {        return paddingDown;    }    public void setPaddingDown(int paddingDown) {        this.paddingDown = paddingDown;    }    public int getAppendXLength() {        return appendXLength;    }    public void setAppendXLength(int appendXLength) {        this.appendXLength = appendXLength;    }    public float getMaxNumber() {        return maxNumber;    }    public void setMaxNumber(float maxNumber) {        this.maxNumber = maxNumber;    }    public List getTitleXList() {        return titleXList;    }    public void setTitleXList(List titleXList) {        this.titleXList = titleXList;    }    public List getTitleYList() {        return titleYList;    }    public void setTitleYList(List titleYList) {        this.titleYList = titleYList;    }    public int getBgColor() {        return bgColor;    }    public void setBgColor(int bgColor) {        this.bgColor = bgColor;    }    public int getSingleColumnFillColor() {        return singleColumnFillColor;    }    public void setSingleColumnFillColor(int singleColumnFillColor) {        this.singleColumnFillColor = singleColumnFillColor;    }    public int getDoubleColumnFillColor() {        return doubleColumnFillColor;    }    public void setDoubleColumnFillColor(int doubleColumnFillColor) {        this.doubleColumnFillColor = doubleColumnFillColor;    }    public int getFillDownColor() {        return fillDownColor;    }    public void setFillDownColor(int fillDownColor) {        this.fillDownColor = fillDownColor;    }    public int getXyLineColor() {        return xyLineColor;    }    public void setXyLineColor(int xyLineColor) {        this.xyLineColor = xyLineColor;    }    public int getShadowLineColor() {        return shadowLineColor;    }    public void setShadowLineColor(int shadowLineColor) {        this.shadowLineColor = shadowLineColor;    }    public int getChartLineColor() {        return chartLineColor;    }    public void setChartLineColor(int chartLineColor) {        this.chartLineColor = chartLineColor;    }    public String getyUnit() {        return yUnit;    }    public void setyUnit(String yUnit) {        this.yUnit = yUnit;    }    public List> getPointList() {        return pointList;    }    public void setPointList(List> pointList) {        this.pointList = pointList;    }    public List getBitmapList() {        return bitmapList;    }    public void setBitmapList(List bitmapList) {        this.bitmapList = bitmapList;    }    public List getLineColorList() {        return lineColorList;    }    public void setLineColorList(List lineColorList) {        this.lineColorList = lineColorList;    }}
原文转自于：http://blog.csdn.net/iamws/article/details/23875089
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