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男医生给产妇做内检小说网站,宁波seo推广方式排名,建立的短语,南阳关键词优化Android 自定义坐标曲线图_android 自定义曲线图-CSDN博客 继上一篇文章，点击折线图上的点，显示提示信息进行修改，之前通过回调，调用外部方法，使用popupwindow或dialog来显示，但是这种方法对于弹框显示的位…

Android 自定义坐标曲线图_android 自定义曲线图-CSDN博客

     
继上一篇文章，点击折线图上的点，显示提示信息进行修改，之前通过回调，调用外部方法，使用popupwindow或dialog来显示，但是这种方法对于弹框显示的位置很难控制，而且采用popupwindow或dialog是具有唯一性的，也就是显示后，必须先关闭，才能显示下一个点的弹框，这种在某些需求上是不符合的，这种只适合每次只弹一个弹框，且固定在底部，或者居中显示，就可以，实现起来简单。这种方式只适合在页面只有一个折线图的情况下，不适合运用到RecyclerView中，每个item都出现折线图的情况。

如果是要显示在点击到的点的上方，就很难控制，无法精准，并且在分辨率不同的手机会出现较大的差异。因此做了以下修改：

更新如下（20240329）：点击点提示信息，不再使用popupwindow或dialog，还是通过自定义，引入xml布局来实现，适合运用到页面只有一个折线图，也适合RecyclerView中出现多个折线图的情况。具体实现代码如下：

public void showDialog(Canvas c, Point point) {c.save();c.translate((point.x - dip2px(45f)), (point.y - dip2px(30f) - CIRCLE_SIZE / 2f));FrameLayout frameLayout = new FrameLayout(mContext);frameLayout.setLayoutParams(new ViewGroup.LayoutParams(200, 200));LayoutInflater li = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);View v = li.inflate(R.layout.dialog_valuation_tracker, null);v.setLayoutParams(newFrameLayout.LayoutParams(dip2px(90f), dip2px(26f)));frameLayout.addView(v);frameLayout.measure(bWidth, bHeight);frameLayout.layout(100, 100, 100, 100);frameLayout.draw(c);c.restore();}

可以看到，是通过引入xml的形式来实现，使用xml能更加的实现多样化样式，要显示什么样子的提示框，可自行在xml里面修改，比如可以加入图片等；并且可以更好的控制显示的位置。可以通过再添加一些方法给外部调用即可

完整代码如下

public class BrokenLineView extends View {private static final int CIRCLE_SIZE = 40;private static enum LineStyle {LINE, CURVE}private static enum YLineStyle {DASHES_LINE, FULL_LINE, NOT_LINE}private static enum ShaderOrientationStyle {ORIENTATION_H, ORIENTATION_V}private final Context mContext;private OnClickListener listener;private LineStyle mStyle = LineStyle.LINE;private YLineStyle mYLineStyle = YLineStyle.NOT_LINE;private ShaderOrientationStyle mShaderOrientationStyle = ShaderOrientationStyle.ORIENTATION_V;private int canvasWidth;private int bHeight = 0;private int bWidth = 0;private int marginLeft;private int marginRight;private boolean isMeasure = true;private int xTextWidth = 0;//Y textprivate int spacingHeight;private double averageValue;private int marginTop = 0;private int marginBottom = 0;/*** data*/private Point[] mPoints;private List<String> yRawData = new ArrayList<>();private ValuationTrackerPointData pointData;private List<String> xRawData = new ArrayList<>();private final List<Double> dataList = new ArrayList<>();private final List<Integer> xList = new ArrayList<>();// x valueprivate final Map<String, Integer> xMap = new HashMap<>();/*** paint color*/private int xTextPaintColor;private int yTextPaintColor;private int startShaderColor;private int endShaderColor;private int mCanvasColor;private int mXLinePaintColor;/*** paint size*/private int xTextSize = 12;private int yTextSize = 12;private Point mSelPoint;public BrokenLineView(Context context) {this(context, null);}public BrokenLineView(Context context, AttributeSet attrs) {super(context, attrs);this.mContext = context;initView();}private void initView() {xTextPaintColor = getColor(mContext, R.color.cl_858585);yTextPaintColor = getColor(mContext, R.color.cl_858585);startShaderColor = getColor(mContext, R.color.cl_c53355_30);endShaderColor = getColor(mContext, R.color.cl_c53355_5);mCanvasColor = getColor(mContext, R.color.white);mXLinePaintColor = getColor(mContext, R.color.cl_EBEBEB);}public void setData(ValuationTrackerPointData pointData) {this.pointData = pointData;averageValue = pointData.getyAverageValue();xRawData.clear();yRawData.clear();dataList.clear();xRawData = pointData.getxAxis();xRawData.add(0, "");yRawData = pointData.getyAxis();for (int i = 0; i < pointData.getPointInfo().size(); i++) {dataList.add(pointData.getPointInfo().get(i).getPrice());}if (null != dataList) {mPoints = new Point[dataList.size()];}if (null != yRawData) {spacingHeight = yRawData.size();}}@Overrideprotected void onSizeChanged(int w, int h, int oldW, int oldH) {if (isMeasure) {marginLeft = dip2px(20);marginRight = dip2px(10);marginTop = dip2px(5);marginBottom = dip2px(40);int canvasHeight = getHeight();this.canvasWidth = getWidth();if (bHeight == 0) {bHeight = canvasHeight - marginBottom - marginTop;}if (bWidth == 0) {bWidth = canvasWidth - marginLeft - marginRight;}isMeasure = false;}}@Overrideprotected void onDraw(Canvas canvas) {canvas.drawColor(mCanvasColor);//canvas color//draw X linedrawAllXLine(canvas);if (YLineStyle.DASHES_LINE == mYLineStyle) {drawPathYDashesLine(canvas);//draw Y dashes line} else if (YLineStyle.FULL_LINE == mYLineStyle) {drawAllYLine(canvas);// draw Y line} else {noDrawYLine(canvas);}// point initmPoints = getPoints();//draw cure linedrawCurve(canvas);//draw Polygon bg colordrawPolygonBgColor(canvas);// is click pointif (null == mSelPoint) {drawDot(canvas);// draw dot} else {clickUpdateDot(canvas);// update dot after click}}private void drawCurve(Canvas c) {Paint p = new Paint(Paint.ANTI_ALIAS_FLAG);p.setColor(getColor(mContext, R.color.cl_c53355));p.setStrokeWidth(dip2px(1f));p.setStyle(Paint.Style.STROKE);if (mStyle == LineStyle.CURVE) {drawScrollLine(c, p);} else {drawLine(c, p);}}private void drawDot(Canvas c) {if (null == mPoints || mPoints.length == 0) {return;}Paint p = new Paint(Paint.ANTI_ALIAS_FLAG);p.setStyle(Paint.Style.FILL);for (Point point : mPoints) {p.setColor(getColor(mContext, R.color.cl_c53355));c.drawCircle(point.x, point.y, CIRCLE_SIZE / 2f, p);p.setColor(getColor(mContext, R.color.cl_d77188));c.drawCircle(point.x, point.y, CIRCLE_SIZE / 3f, p);}}private void clickUpdateDot(Canvas c) {if (null == mPoints || mPoints.length == 0) {return;}Paint p = new Paint(Paint.ANTI_ALIAS_FLAG);p.setStyle(Paint.Style.FILL);for (Point point : mPoints) {if (null != mSelPoint && mSelPoint.x == point.x && mSelPoint.y == point.y) {p.setColor(getColor(mContext, R.color.cl_c53355));c.drawCircle(point.x, point.y, CIRCLE_SIZE / 1.5f, p);p.setColor(getColor(mContext, R.color.cl_d77188));c.drawCircle(point.x, point.y, (CIRCLE_SIZE / 2f), p);showDialog(c, point);} else {p.setColor(getColor(mContext, R.color.cl_c53355));c.drawCircle(point.x, point.y, CIRCLE_SIZE / 2f, p);p.setColor(getColor(mContext, R.color.cl_d77188));c.drawCircle(point.x, point.y, CIRCLE_SIZE / 3f, p);}}}private void drawPolygonBgColor(Canvas c) {if (null == mPoints || mPoints.length == 0) {return;}Path p = new Path();float startX = 0;float endX = 0;int endPoint = mPoints.length - 1;for (int i = 0; i < mPoints.length; i++) {if (i == 0) {startX = mPoints[i].x;p.moveTo(mPoints[i].x, 0);p.lineTo(mPoints[i].x, mPoints[i].y);} else {p.lineTo(mPoints[i].x, mPoints[i].y);if (i == endPoint) {endX = mPoints[i].x;}}}p.lineTo(endX, (bHeight + marginTop));p.lineTo(startX, (bHeight + marginTop));p.close();Paint paint = new Paint();paint.setStyle(Paint.Style.FILL);Shader shader = null;if (mShaderOrientationStyle == ShaderOrientationStyle.ORIENTATION_H) {shader = new LinearGradient(endX, (bHeight + marginTop), startX, (bHeight + marginTop),startShaderColor, endShaderColor, Shader.TileMode.REPEAT);} else {Point point = getYBiggestPoint();if (null != point) {shader = new LinearGradient(point.x, point.y, endX, (bHeight + marginTop),startShaderColor, endShaderColor, Shader.TileMode.REPEAT);}}paint.setShader(shader);c.drawPath(p, paint);}private Point getYBiggestPoint() {Point p = null;if (null != mPoints && mPoints.length > 0) {p = mPoints[0];for (int i = 0; i < mPoints.length - 1; i++) {if (p.y > mPoints[i + 1].y) {p = mPoints[i + 1];}}}return p;}private void drawPathYDashesLine(Canvas canvas) {if (null == xRawData || xRawData.isEmpty()) {return;}Path path = new Path();int dashLength = 16;int blankLength = 16;Paint p = new Paint();p.setStyle(Paint.Style.STROKE);p.setStrokeWidth(4);p.setColor(getColor(mContext, R.color.colorGray));p.setPathEffect(new DashPathEffect(new float[]{dashLength, blankLength}, 0));for (int i = 0; i < xRawData.size(); i++) {drawTextY(xRawData.get(i), (getMarginWidth() + getBWidth() / xRawData.size() * i) - dip2px(8), bHeight + marginTop + dip2px(26),canvas);if (null != xMap) {xMap.put(xRawData.get(i), getMarginWidth() + getBWidth() / xRawData.size() * i);}int startX = (getMarginWidth() + getBWidth() / xRawData.size() * i);int startY = marginTop;int endY = bHeight + marginTop;path.moveTo(startX, startY);path.lineTo(startX, endY);canvas.drawPath(path, p);}getPointX();}/*** draw Y*/private void drawAllYLine(Canvas canvas) {if (null == xRawData || xRawData.isEmpty()) {return;}Paint p = new Paint(Paint.ANTI_ALIAS_FLAG);p.setColor(getColor(mContext, R.color.colorBlack));for (int i = 0; i < xRawData.size(); i++) {int w = (getMarginWidth() + getBWidth() / xRawData.size()) * i;canvas.drawLine(w, marginTop, w, (bHeight + marginTop), p);drawTextY(xRawData.get(i), getMarginWidth() + getBWidth() / xRawData.size() * i - dip2px(8), bHeight + marginTop + dip2px(26),canvas);if (null != xMap) {xMap.put(xRawData.get(i), getMarginWidth() + getBWidth() / xRawData.size() * i);}}getPointX();}private void noDrawYLine(Canvas canvas) {if (null == xRawData || xRawData.isEmpty()) {return;}for (int i = 0; i < xRawData.size(); i++) {drawTextY(xRawData.get(i), (getMarginWidth() + getBWidth() / xRawData.size() * i) - dip2px(8), bHeight + marginTop + dip2px(26),canvas);if (null != xMap) {xMap.put(xRawData.get(i), getMarginWidth() + getBWidth() / xRawData.size() * i);}}getPointX();}private void getPointX() {if (null == xMap || xMap.size() == 0) {return;}if (null != pointData && !pointData.getPointInfo().isEmpty()) {for (ValuationTrackerPointData.PointInfo info : pointData.getPointInfo()) {for (Map.Entry<String, Integer> entry : xMap.entrySet()) {if (entry.getKey().equals(info.getMouth())) {xList.add(xMap.get(entry.getKey()));}}}}}/*** draw x*/private void drawAllXLine(Canvas canvas) {if (null == yRawData || yRawData.isEmpty()) {return;}Paint p = new Paint(Paint.ANTI_ALIAS_FLAG);p.setColor(mXLinePaintColor);p.setStrokeWidth(dip2px(1f));p.setStyle(Paint.Style.FILL);int h = bHeight / spacingHeight;for (int i = 0; i < yRawData.size(); i++) {drawTextX(yRawData.get(i), marginLeft / 2,bHeight - (bHeight / spacingHeight) * i + marginTop + dip2px(2), canvas);canvas.drawLine(getMarginWidth(), (bHeight - h * i + marginTop), (canvasWidth - marginRight),(bHeight - h * i + marginTop), p);}}private void drawScrollLine(Canvas canvas, Paint paint) {if (null == mPoints || mPoints.length == 0) {return;}Point startP;Point endP;for (int i = 0; i < mPoints.length - 1; i++) {startP = mPoints[i];endP = mPoints[i + 1];int wt = (startP.x + endP.x) / 2;Point p3 = new Point();Point p4 = new Point();p3.y = startP.y;p3.x = wt;p4.y = endP.y;p4.x = wt;Path path = new Path();path.moveTo(startP.x, startP.y);path.cubicTo(p3.x, p3.y, p4.x, p4.y, endP.x, endP.y);canvas.drawPath(path, paint);}}private void drawLine(Canvas canvas, Paint paint) {if (null == mPoints || mPoints.length == 0) {return;}Point startP;Point endP;for (int i = 0; i < mPoints.length - 1; i++) {startP = mPoints[i];endP = mPoints[i + 1];canvas.drawLine(startP.x, startP.y, endP.x, endP.y, paint);}}private void drawTextY(String text, int x, int y, Canvas canvas) {if (null == yRawData || yRawData.isEmpty()) {return;}Paint p = new Paint(Paint.ANTI_ALIAS_FLAG);p.setTextSize(dip2px(yTextSize));p.setColor(yTextPaintColor);p.setTextAlign(Paint.Align.LEFT);canvas.drawText(text, x, y, p);}private void drawTextX(String text, int x, int y, Canvas canvas) {if (null == xRawData || xRawData.isEmpty()) {return;}Paint p = new Paint(Paint.ANTI_ALIAS_FLAG);p.setTextSize(dip2px(xTextSize));p.setColor(xTextPaintColor);p.setTextAlign(Paint.Align.LEFT);xTextWidth = (int) p.measureText(text);canvas.drawText(text, x, y, p);}private Point[] getPoints() {Point[] points = new Point[dataList.size()];for (int i = 0; i < dataList.size(); i++) {int ph = bHeight - (int) (((dataList.get(i) - pointData.getyAxisSmallValue()) / averageValue) * (bHeight * 1.0f / spacingHeight));points[i] = new Point(xList.get(i), ph + marginTop);}return points;}private int getMarginWidth() {if (xTextWidth == 0) {return marginLeft;} else {return xTextWidth + marginLeft;}}private int getBWidth() {if (xTextWidth == 0) {return bWidth;} else {return bWidth - xTextWidth;}}@SuppressLint("ClickableViewAccessibility")@Overridepublic boolean onTouchEvent(MotionEvent event) {int x = (int) event.getX();int y = (int) event.getY();int action = event.getAction();if (action == MotionEvent.ACTION_DOWN) {dealClick(x, y);}return true;}private void dealClick(int x, int y) {if (null != mPoints && mPoints.length > 0) {for (Point p : mPoints) {if ((p.x - CIRCLE_SIZE) < x && x < (p.x + CIRCLE_SIZE) &&(p.y - CIRCLE_SIZE) < y && y < (p.y + CIRCLE_SIZE)) {mSelPoint = p;invalidate();if (null != listener) {listener.onClick(this, p.x, p.y);}}}}}public void showDialog(Canvas c, Point point) {c.save();c.translate((point.x - dip2px(45f)), (point.y - dip2px(30f) - CIRCLE_SIZE / 2f));FrameLayout frameLayout = new FrameLayout(mContext);frameLayout.setLayoutParams(new ViewGroup.LayoutParams(200, 200));LayoutInflater li = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);View v = li.inflate(R.layout.dialog_valuation_tracker, null);v.setLayoutParams(newFrameLayout.LayoutParams(dip2px(90f), dip2px(26f)));frameLayout.addView(v);frameLayout.measure(bWidth, bHeight);frameLayout.layout(100, 100, 100, 100);frameLayout.draw(c);c.restore();}public void setAverageValue(int averageValue) {this.averageValue = averageValue;}public void setMarginTop(int marginTop) {this.marginTop = marginTop;}public void setMarginBottom(int marginBottom) {this.marginBottom = marginBottom;}public void setMStyle(LineStyle mStyle) {this.mStyle = mStyle;}public void setMYLineStyle(YLineStyle style) {this.mYLineStyle = style;}public void setShaderOrientationStyle(ShaderOrientationStyle shaderOrientationStyle) {this.mShaderOrientationStyle = shaderOrientationStyle;}public void setBHeight(int bHeight) {this.bHeight = bHeight;}public void setXTextPaintColor(int xTextPaintColor) {this.xTextPaintColor = xTextPaintColor;}public void setYTextPaintColor(int yTextPaintColor) {this.yTextPaintColor = yTextPaintColor;}public void setXTextSize(int xTextSize) {this.xTextSize = xTextSize;}public void setYTextSize(int yTextSize) {this.yTextSize = yTextSize;}public void setXLinePaintColor(int color) {mXLinePaintColor = color;}public void setShaderColor(int startColor, int endColor) {this.startShaderColor = startColor;this.endShaderColor = endColor;}private int dip2px(float dpValue) {float scale = mContext.getResources().getDisplayMetrics().density;return (int) (dpValue * scale + 0.5f);}public interface OnClickListener {void onClick(View v, int x, int y);}public void setListener(OnClickListener listener) {this.listener = listener;}
}


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