下面是编程之家 jb51.cc 通过网络收集整理的代码片段。
编程之家小编现在分享给大家，也给大家做个参考。
支持android 2.2以上平台。注：代码中有用到一个工具类的dpToPx的方法，用来转换dp单位值到px的，暂时没有提供，朋友们可以自行编写然后对代码进行替换。
在activity中使用，下面是范例代码, 至于怎么正确放置代码，相信做过android的朋友都很熟悉了。
FinancescoreDialView fcdView =new FinancescoreDialView(context);
addview(fcdView);
fcdView.setValues(new double[]{80.5, 10});
fcdView.setscoreTitleString("第三季度");
fcdView.setRankingTitleString("行业排名");
fcdView.setscoreTitleColor(0xff666666);
fcdView.setscoreColor(0xffc1611e);
fcdView.setRankingTitleColor(0xff666666);
fcdView.setRankingColor(Color.WHITE);
fcdView.setInnerscoreRingColor(0xffc1ddf9);
fcdView.setOuterscoreRingColor(0xff328deb);
fcdView.setOuterscoreSelRingColor(0xffc1611e);
fcdView.setscoreAxisLineColor(0xff00ff00);
fcdView.setscoreAxisLables(5);
fcdView.postInvalidate();
import android.content.Context; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.graphics.RectF; import android.view.View; import java.text.NumberFormat; class FinancescoreDialView extends View{ private double score; // private int ranking; private String mscoreTitleStr; //表盘标题 private String mRankingTitleStr; private int mscoreAxisLineColor; //表盘刻度文字 public void setscoreTitleColor(int mscoreTitleColor) { this.mscoreTitleColor = mscoreTitleColor; } public void setscoreColor(int mscoreColor) { this.mscoreColor = mscoreColor; } public void setRankingTitleColor(int mRankingTitleColor) { this.mRankingTitleColor = mRankingTitleColor; } public void setRankingColor(int mRankingColor) { this.mRankingColor = mRankingColor; } private int mscoreTitleColor; //表盘标题文字颜色 private int mscoreColor; private int mRankingTitleColor; private int mRankingColor; public void setInnerscoreRingColor(int mInnerscoreRingColor) { this.mInnerscoreRingColor = mInnerscoreRingColor; } public void setOuterscoreRingColor(int mOuterscoreRingColor) { this.mOuterscoreRingColor = mOuterscoreRingColor; } public void setOuterscoreSelRingColor(int mOuterscoreSelRingColor) { this.mOuterscoreSelRingColor = mOuterscoreSelRingColor; } public void setscoreAxisLineColor(int axisLineColor){ this.mscoreAxisLineColor = axisLineColor; } private int mInnerscoreRingColor; private int mOuterscoreRingColor; private int mOuterscoreSelRingColor; private float totalscore = 100; private float stepDegree = -1; public void setscoreAxisLables(int scoreAxisLables) { this.scoreAxisLables = scoreAxisLables; axisLabelStrs = new String[scoreAxisLables]; float step = totalscore / (scoreAxisLables-1); for (int i =0; i< scoreAxisLables; i++){ axisLabelStrs[i] = String.valueOf(nFormat2.format(step *i)); } float sweepAngle = 180+Math.abs(2*offset_degree); stepDegree = sweepAngle/(scoreAxisLables-1); } private int scoreAxisLables; private String[] axisLabelStrs; private float axisLineWidth = Tool.dpToPx(0.5f); private float axisLableTextSize = Tool.dpToPx(12); private Paint axisLablePaint = new Paint(); private float leftmargin = Tool.dpToPx(5); private float v_margin = Tool.dpToPx(15); private float h_space = Tool.dpToPx(15); private float ring_space = Tool.dpToPx(5); private float outter_ringWidth = Tool.dpToPx(1); private float inner_ringWidth = Tool.dpToPx(5); private Paint rankingTextPaint = new Paint(); private Paint scoreTextPaint = new Paint(); private Paint scoreRingPaint = new Paint(); private float scoreTitleTextSize = Tool.dpToPx(14); private float rankingTitleTextSize = Tool.dpToPx(14); private float scoreTextSize = Tool.dpToPx(40); private float rankingTextSize = Tool.dpToPx(30); private static final float offset_degree = -10; //负代表往下偏移10度 private float maxOutterscoreDiameter = -1; private float maxOutterscoreRadius = -1; private float innerscoreDiameter = -1; private RectF ring_rectf = new RectF(); private static NumberFormat nFormat = NumberFormat.getNumberInstance(); private static NumberFormat nFormat2 = NumberFormat.getNumberInstance(); static{ nFormat.setMaximumFractionDigits(2); nFormat.setMinimumFractionDigits(2); nFormat2.setMaximumFractionDigits(0); } public FinancescoreDialView(Context context) { super(context); init(); } private void init(){ rankingTextPaint.setAntiAlias(true); scoreTextPaint.setAntiAlias(true); scoreRingPaint.setAntiAlias(true); } public void setValues(double[] values){ if(null != values){ if(values.length >0){ score = values[0]; } if(values.length >1 ){ ranking = (int)values[1]; } } } public void setscoreTitleString(String str){ this.mscoreTitleStr = str; } public void setRankingTitleString(String str){ this.mRankingTitleStr = str; } public void onMeasure(int widthMeasureSpec,int heightMeasureSpec){ int specWidth = MeasureSpec.getSize(widthMeasureSpec); int measuredWidth = specWidth; int measuredHeight = 0; scoreTextPaint.setTextSize(scoreTitleTextSize); float scoretitle_h = getFontHeight(scoreTextPaint); float scoretitle_w = scoreTextPaint.measureText(mscoreTitleStr); scoreTextPaint.setTextSize(scoreTextSize); float score_h = getFontHeight(scoreTextPaint); float score_w = scoreTextPaint.measureText(nFormat.format(score)); float totalh_score = scoretitle_h + Tool.dpToPx(5) + score_h; float totalw_score = Math.max(scoretitle_w,score_w) + 2*Tool.dpToPx(20); float score_diameter = Math.max(totalw_score,totalh_score); float max_outter_score_diameter = score_diameter + 2* (inner_ringWidth + ring_space + outter_ringWidth); maxOutterscoreDiameter = max_outter_score_diameter; innerscoreDiameter = max_outter_score_diameter - 2*(outter_ringWidth + ring_space); float max_outter_score_radius = max_outter_score_diameter/2; maxOutterscoreRadius = max_outter_score_radius; measuredHeight += max_outter_score_radius; double rAngle = Math.toRadians(90 - (-180 + offset_degree)); measuredHeight += Math.abs(max_outter_score_radius*Math.cos(rAngle)); measuredHeight += 2*v_margin; setMeasuredDimension(measuredWidth,measuredHeight); } public void onDraw(Canvas canvas){ int startX = getScrollX(); int startY = getScrollY(); rankingTextPaint.setTextSize(rankingTitleTextSize); rankingTextPaint.setColor(mRankingTitleColor); float rankingTitleBaseline = startY + v_margin + getFontTopYToBaseline(rankingTextPaint); canvas.drawText(mRankingTitleStr,startX + leftmargin,rankingTitleBaseline,rankingTextPaint); float rankingTitle_w = rankingTextPaint.measureText(mRankingTitleStr); //圆心纵横坐标 float centerX = startX + leftmargin + h_space + rankingTitle_w + maxOutterscoreDiameter/2; float centerY =startY + v_margin + maxOutterscoreDiameter/2; float max_outter_ring_startX = centerX - maxOutterscoreDiameter/2 + outter_ringWidth/2; float max_outter_ring_startY = v_margin + outter_ringWidth/2; float max_outter_ring_endX = max_outter_ring_startX + maxOutterscoreDiameter - outter_ringWidth; float max_outter_ring_endY = max_outter_ring_startY + maxOutterscoreDiameter - outter_ringWidth; ring_rectf.set(max_outter_ring_startX,max_outter_ring_startY,max_outter_ring_endX,max_outter_ring_endY); scoreRingPaint.setStyle(Paint.Style.STROKE); scoreRingPaint.setStrokeWidth(outter_ringWidth); scoreRingPaint.setColor(mOuterscoreRingColor); float startAngle = -180 + offset_degree; float sweepAngle = 180+Math.abs(2*offset_degree); float sweepAngle1 = (float)(sweepAngle * score/ totalscore); if(sweepAngle1 > sweepAngle || (sweepAngle-sweepAngle1<1)){ sweepAngle1 = sweepAngle; } canvas.drawArc(ring_rectf,startAngle,sweepAngle,false,scoreRingPaint ); //画外环 scoreRingPaint.setColor(mOuterscoreSelRingColor); canvas.drawArc(ring_rectf,sweepAngle1,scoreRingPaint ); float inner_ring_startX = centerX - innerscoreDiameter/2 + inner_ringWidth/2; float inner_ring_startY = centerY - innerscoreDiameter/2 + inner_ringWidth/2; float inner_ring_endX = inner_ring_startX + innerscoreDiameter - inner_ringWidth; float inner_ring_endY = inner_ring_startY + innerscoreDiameter - inner_ringWidth; ring_rectf.set(inner_ring_startX,inner_ring_startY,inner_ring_endX,inner_ring_endY); scoreRingPaint.setStrokeWidth(inner_ringWidth); scoreRingPaint.setColor(mInnerscoreRingColor); canvas.drawArc(ring_rectf,scoreRingPaint); for (int i =0; i<scoreAxisLables; i++){ float degree = -1; degree = -180 + offset_degree + stepDegree * i; double radian = Math.toRadians(90-degree); float shortRadius = innerscoreDiameter/2 - inner_ringWidth; float longRadius = innerscoreDiameter/2; double sinValue = Math.sin(radian); double cosValue = Math.cos(radian); float x1 = (float) (centerX +shortRadius * sinValue); float y1 = (float)(centerY +shortRadius * cosValue); float x2 = (float)(centerX + longRadius * sinValue); float y2 = (float)(centerY + longRadius * cosValue); scoreRingPaint.setStyle(Paint.Style.STROKE); scoreRingPaint.setStrokeWidth(axisLineWidth); scoreRingPaint.setColor(mscoreAxisLineColor); canvas.drawLine(x1,y1,x2,y2,scoreRingPaint); axisLablePaint.setTextSize(axisLableTextSize); axisLablePaint.setTextAlign(Paint.Align.CENTER); axisLablePaint.setColor(mInnerscoreRingColor); float axisLable_fonth = getFontHeight(axisLablePaint); float labelRadius =innerscoreDiameter/2 - inner_ringWidth - axisLable_fonth/2 + 3; float x3 = (float) (centerX + labelRadius * sinValue); float y3 =(float) (centerY + labelRadius * cosValue); canvas.save(); canvas.rotate(90+ degree,x3,y3); //绘制倾斜文字 canvas.drawText(axisLabelStrs[i],y3 + getFontCenterYToBaseLine(axisLablePaint),axisLablePaint); canvas.restore(); } scoreTextPaint.setTextAlign(Paint.Align.CENTER); scoreTextPaint.setTextSize(scoreTextSize); scoreTextPaint.setColor(mscoreColor); double rAngle = Math.toRadians(90 - (-180 + offset_degree)); //弧度 float offset_y = (float)(maxOutterscoreRadius*Math.cos(rAngle)); float scoreBaselineY = centerY + offset_y; float tempH = getFontTopYToBaseline(scoreTextPaint); canvas.drawText(nFormat.format(score),centerX,scoreBaselineY,scoreTextPaint); scoreTextPaint.setTextSize(scoreTitleTextSize); scoreTextPaint.setColor(mscoreTitleColor); float scoreTitleBaselineY = scoreBaselineY - tempH - Tool.dpToPx(2); canvas.drawText(mscoreTitleStr,scoreTitleBaselineY,scoreTextPaint); } public static float getFontHeight(Paint textPaint){ Paint.FontMetrics fm = textPaint.getFontMetrics(); return (float)Math.ceil(fm.descent - fm.ascent) + 3; } public static float getFontTopYToBaseline(Paint textPaint){ Paint.FontMetrics fm = textPaint.getFontMetrics(); return (float)Math.ceil(-fm.ascent) + 3; } public static float getFontBottomYToBaseline(Paint textPaint){ Paint.FontMetrics fm = textPaint.getFontMetrics(); return (float)Math.ceil(fm.descent) + 3; } public static float getFontCenterYToBaseLine(Paint textPaint){ Paint.FontMetrics fm = textPaint.getFontMetrics(); float fonth = getFontHeight(textPaint); return (float)Math.abs(Math.ceil(fonth/2- fm.descent)); } }
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