文件名称:
Android图表绘制(柱状图、圆形图、折线图)
开发工具:
文件大小: 994kb
下载次数: 0
上传时间: 2014-12-31
详细说明： 利用自定义View层实现柱状图、圆形图、折线图的图表绘制，可以运用在一些评分统计类的App功能中。 public class HomeArc extends View { private Paint paint_black, paint_white; private RectF rectf; private float tb; private int blackColor = 0x70000000; // 底黑色 private int whiteColor = 0xddffffff; // 白色 private int score; private float arc_y = 0f; private int score_text; public HomeArc(Context context, int score) { super(context); init(score); } public void init(int score) { this.score = score; Reso urces res = getResources(); tb = res.getDimension(R.dimen.historyscore_tb); paint_black = new Paint(); paint_black.setAntiAlias(true); paint_black.setColor(blackColor); paint_black.setStrokeWidth(tb * 0.2f); paint_black.setStyle(Style.STROKE); paint_white = new Paint(); paint_white.setAntiAlias(true); paint_white.setColor(whiteColor); paint_white.setTextSize(tb*6.0f); paint_white.setStrokeWidth(tb * 0.2f); paint_white.setTextAlign(Align.CENTER); paint_white.setStyle(Style.STROKE); rectf = new RectF(); rectf.set(tb * 0.5f, tb * 0.5f, tb * 18.5f, tb * 18.5f); setLayoutParams(new LayoutParams((int) (tb * 19.5f), (int) (tb * 19.5f))); this.getViewTreeObserver().addOnPreDrawListener( new OnPreDrawListener() { public boolean onPreDraw() { new thread(); getViewTreeObserver().removeOnPreDrawListener(this); return false; } }); } protected void onDraw(Canvas c) { super.onDraw(c); c.drawArc(rectf, -90, 360, false, paint_black); c.drawArc(rectf, -90, arc_y, false, paint_white); c.drawText("" + score_text, tb * 9.7f, tb * 11.0f, paint_white); } class thread implements Runnable { private Thread thread; private int statek; int count; public thread() { thread = new Thread(this); thread.start(); } public void run() { while (true) { switch (statek) { case 0: try { Thread.sleep(200); statek = 1; } catch (InterruptedException e) { } break; case 1: try { Thread.sleep(15); arc_y += 3.6f; score_text++; count++; postInvalidate(); } catch (InterruptedException e) { e.printStackTrace(); } break; } if (count >= score) break; } } } } ...展开收缩
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