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Android一个包含表格的图标库
阅读量:7008 次
发布时间:2019-06-28

本文共 7095 字,大约阅读时间需要 23 分钟。

之前有写过一个图表lib,但是开发的速度,大多很难跟上产品需求变化的脚步,所以修改了下原先的图表库,支持图表下面能整合table显示对应的类目,用曲线替换了折线,支持多曲线的显示,增加了显示的动画,,增加了一些可定制的属性,支持水平柱状图和叠加柱状图,以及多曲线图和饼状图的显示

1.效果图

image

2.各种图表的使用方式

1.饼状图 这个和原先的使用一样,只不过增加了一个动画,可以参看之前的文章,。

2.水平多柱状图

2.1 xml布局

还有y_visible_num:y轴需要显示几列

2.2 数据设置

public class HorBarActivity extends AppCompatActivity {//显示的坐标点private ChartLine mChartline;//多条折线的坐标点private List
> mMulListDisDots;//x轴的点private String[] mXdots = new String[]{
"08/18", "08/19","08/20", "08/21", "08/22", "08/23", "08/24","08/25", "08/26", "08/27", "08/28", "08/29", "09/01", "09/02", "09/23",};private double mMax = 44;private Random rand = new Random();private List
mCategoryList;@Overrideprotected void onCreate(@Nullable Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_hor_bar);initView();initMulTestData();initCategoryList();try {mChartline.setYAxisMaxValue(mMax).setXdots(mXdots).setAnimationOpen(true).setListDisDots(mMulListDisDots).setCategoryList(mCategoryList).reDraw();} catch (YCoordinateException e) {Log.d("MainActivity", "onCreate: ");e.printStackTrace();}}/*** 柱状图的数据,是一个list,一个CategoryVo,就是一列中增加一个柱状* CategoryVo:{* 卡券类目的名称* private String categoryName;* 每个卡券类目的值* private List
categoryValueList;* }*/private void initCategoryList() {mCategoryList = new ArrayList<>();mCategoryList.add(new CategoryVo());mCategoryList.add(new CategoryVo());mCategoryList.add(new CategoryVo());}/*** 初始化曲线图,private List
> mMulListDisDots;* List
>就是一条曲线图,*/private void initMulTestData() {mMulListDisDots = new ArrayList<>();for (int i = 0; i < 3; i++) {ArrayList
temp = new ArrayList();DotVo tempDotVo = new DotVo("08/18", rand.nextInt((int) mMax));temp.add(tempDotVo);DotVo tempDotVo1 = new DotVo("08/19", rand.nextInt((int) mMax));temp.add(tempDotVo1);DotVo tempDotVo2 = new DotVo("08/20", rand.nextInt((int) mMax));temp.add(tempDotVo2);DotVo tempDotVo3 = new DotVo("08/21", rand.nextInt((int) mMax));temp.add(tempDotVo3);DotVo tempDotVo4 = new DotVo("08/22", rand.nextInt((int) mMax));temp.add(tempDotVo4);DotVo tempDotVo5 = new DotVo("08/23", rand.nextInt((int) mMax));temp.add(tempDotVo5);DotVo tempDotVo6 = new DotVo("09/02", rand.nextInt((int) mMax));temp.add(tempDotVo6);mMulListDisDots.add(temp);}}private void initView() {mChartline = findViewById(R.id.chartline);}}

3.叠加柱状图

3.1 xml布局

3.2 数据设置,如2.2一样

3.实现的几个关键点

3.1 宽度需要重写,onMeasure,因为的控件的宽度是大于屏幕的宽度的,宽度是根据显示的x轴的点和间距,以及y轴坐标的文字的所占的宽度的距离所组成。

int widthParentMeasureMode = MeasureSpec.getMode(widthMeasureSpec);int widthParentMeasureSize = MeasureSpec.getSize(widthMeasureSpec);int heightParentMeasureMode = MeasureSpec.getMode(heightMeasureSpec);int heightParentMeasureSize = MeasureSpec.getSize(heightMeasureSpec);int resultWidthSize = 0;int resultHeightSize = 0;int resultWidthMode = MeasureSpec.EXACTLY;//用来对childView进行计算的int resultHeightMode = MeasureSpec.EXACTLY;int paddingWidth = getPaddingLeft() + getPaddingRight();int paddingHeight = getPaddingTop() + getPaddingBottom();ViewGroup.LayoutParams thisLp = getLayoutParams();switch (widthParentMeasureMode) {//父类不加限制给子类case MeasureSpec.UNSPECIFIED://这个代表在布局写死了宽度if (thisLp.width > 0) {resultWidthSize = thisLp.width;resultWidthMode = MeasureSpec.EXACTLY;} else {resultWidthSize = (int) (getYMaxTextWidth() + mXinterval * mXdots.length);resultWidthMode = MeasureSpec.UNSPECIFIED;}break;case MeasureSpec.AT_MOST://这个代表在布局写死了宽度if (thisLp.width > 0) {resultWidthSize = thisLp.width;resultWidthMode = MeasureSpec.EXACTLY;} else if (thisLp.width == ViewGroup.LayoutParams.MATCH_PARENT) {resultWidthSize = Math.max(0, widthParentMeasureSize - paddingWidth);resultWidthMode = MeasureSpec.AT_MOST;} else if (thisLp.width == ViewGroup.LayoutParams.WRAP_CONTENT) {resultWidthSize = (int) (getYMaxTextWidth() + mXinterval * mXdots.length);resultWidthMode = MeasureSpec.AT_MOST;}break;case MeasureSpec.EXACTLY://这个代表在布局写死了宽度if (thisLp.width > 0) {resultWidthSize = Math.min(widthParentMeasureSize, thisLp.width);resultWidthMode = MeasureSpec.EXACTLY;} else if (thisLp.width == ViewGroup.LayoutParams.MATCH_PARENT) {resultWidthSize = widthParentMeasureSize;resultWidthMode = MeasureSpec.EXACTLY;} else if (thisLp.width == ViewGroup.LayoutParams.WRAP_CONTENT) {resultWidthSize = (int) (getYMaxTextWidth() + mXinterval * mXdots.length);resultWidthMode = MeasureSpec.AT_MOST;}break;}setMeasuredDimension(MeasureSpec.makeMeasureSpec(resultWidthSize, resultWidthMode),MeasureSpec.makeMeasureSpec(resultHeightSize, resultHeightMode));

3.2 规划固定的区域,在超出区域的部分不可见,这个在之前用的bitmap来实现,总感觉别扭,后面读官方的源码的时候,了解了canvas的clipRect方法,我们在绘制这块的时候,onDraw方法中调用

int clipRestoreCount = canvas.save();canvas.clipRect(mContentRect);//绘制之前调用doDraw();//进行想要的绘制canvas.restoreToCount(clipRestoreCount);//绘制完成调用restoreToCount恢复到绘制这块之前的状态

3.3 动画我们基本都可以用ValueAnimator来实现,比如说饼状图:他的一个绘制是0-360的角度的转变,我们就可以

private void startPathAnim(long duration) {ValueAnimator valueAnimator = ValueAnimator.ofFloat(0, 360);valueAnimator.setDuration(duration);valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {@Overridepublic void onAnimationUpdate(ValueAnimator animation) {mDrawAngle = (float) animation.getAnimatedValue();ViewCompat.postInvalidateOnAnimation(CirclePercentChart.this);}});valueAnimator.start();}

然后通过mDrawAngle来控制每次绘制的角度,这样就可以有从0-360度绘制的感觉,那个柱状图的动画也是一样的,以不变应万变。

3.4 贝塞尔曲线绘制的算法

if (i == 0) {// 第一条为二阶贝塞尔path.moveTo(mDots[0], mDots[1] + (mLastHorLineY - mDots[1]) * mPhaseY);// 起点} else {float cpx = preX + (mDots[0] - preX) / 2.0f;path.cubicTo(cpx, preY + (mLastHorLineY - preY) * mPhaseY,cpx, mDots[1] + (mLastHorLineY - mDots[1]) * mPhaseY,mDots[0], mDots[1] + (mLastHorLineY - mDots[1]) * mPhaseY);}

在绘制贝塞尔曲线,我仔细去查过这些控制点的计算规则,有根据三点,来计算出两个控制点,但是这样绘制出来在三个点内部曲线是很平滑的,但是在接下来的第四个点的衔接的时候,感觉不是很好,所以我还是用了上面的计算方法来计算控制点,算法我贴出来,参数分别是1,2,3的x和y坐标和弯曲系数

public static ControlPonits getControlPoints(double x0, double y0, double x1, double y1, double x2, double y2, double paramCoefficient) {double d01 = Math.sqrt(Math.pow(x1 - x0, 2) + Math.pow(y1 - y0, 2));double d12 = Math.sqrt(Math.pow(x2 - x1, 2) + Math.pow(y2 - y1, 2));double fa = paramCoefficient * d01 / (d01 + d12); // scaling factor for triangle Tadouble fb = paramCoefficient * d12 / (d01 + d12); // ditto for Tb, simplifies to fb=t-fadouble p1x = x1 - fa * (x2 - x0); // x2-x0 is the width of triangle Tdouble p1y = y1 - fa * (y2 - y0); // y2-y0 is the height of Tdouble p2x = x1 + fb * (x2 - x0);double p2y = y1 + fb * (y2 - y0);ControlPonits tempControlPoints = new ControlPonits();tempControlPoints.beforeControlPointX = (float) p1x;tempControlPoints.beforeControlPointY = (float) p1y;tempControlPoints.afterControlPointX = (float) p2x;tempControlPoints.afterControlPointY = (float) p2y;return tempControlPoints;}

3.library引入方式

step 1. Add it in your root build.gradle at the end of repositories:allprojects {repositories {...maven { url 'https://jitpack.io' }}}Step 2. Add the dependencydependencies {compile 'com.github.WelliJohn:charts:1.0.0'}

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出处:http://www.cnblogs.com/WellJohn/p/8383604.html

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