コード例 #1
0
  public void draw() {
    Bitmap bitmap = Bitmap.createBitmap(200, 200, Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmap);

    RectF rect = new RectF(8, 8, 192, 192);

    Paint p = new Paint();
    p.setAntiAlias(true);
    p.setStyle(Paint.Style.STROKE);
    p.setColor(ColS);
    p.setStrokeWidth(16);

    int S = 162;
    int H = 300;

    // S
    canvas.drawArc(rect, -90, S, false, p);

    p.setStyle(Paint.Style.FILL);
    p.setColor(ColM);

    H -= 90;
    canvas.drawCircle(100, 100, 72, p);

    p.setColor(ColH);
    p.setStrokeWidth(2);

    float sx, sy;
    sx = (float) (72 * Math.cos(Math.PI * H / 180));
    sy = (float) (72 * Math.sin(Math.PI * H / 180));

    canvas.drawLine(100, 100, sx + 100, sy + 100, p);

    ImageView clokImg;

    clokImg = (ImageView) findViewById(R.id.clokImage);
    clokImg.setImageBitmap(bitmap);

    // Hour picker
    Bitmap ColPickBmp = Bitmap.createBitmap(80, 50, Bitmap.Config.ARGB_8888);
    Canvas ColPickCanvas = new Canvas(ColPickBmp);
    ImageView colPickImg = (ImageView) findViewById(R.id.colorHou);

    rect = new RectF(0, 0, 80, 50);

    p = new Paint();
    p.setAntiAlias(true);
    p.setStyle(Paint.Style.FILL);
    p.setColor(ColH);
    ColPickCanvas.drawRect(rect, p);

    colPickImg.setImageBitmap(ColPickBmp);

    // Minute picker
    ColPickBmp = Bitmap.createBitmap(80, 50, Bitmap.Config.ARGB_8888);
    ColPickCanvas = new Canvas(ColPickBmp);
    colPickImg = (ImageView) findViewById(R.id.colorMin);

    rect = new RectF(0, 0, 80, 50);

    p = new Paint();
    p.setAntiAlias(true);
    p.setStyle(Paint.Style.FILL);
    p.setColor(ColM);
    ColPickCanvas.drawRect(rect, p);

    colPickImg.setImageBitmap(ColPickBmp);

    // Second picker
    ColPickBmp = Bitmap.createBitmap(80, 50, Bitmap.Config.ARGB_8888);
    ColPickCanvas = new Canvas(ColPickBmp);
    colPickImg = (ImageView) findViewById(R.id.colorSec);

    rect = new RectF(0, 0, 80, 50);

    p = new Paint();
    p.setAntiAlias(true);
    p.setStyle(Paint.Style.FILL);
    p.setColor(ColS);
    ColPickCanvas.drawRect(rect, p);

    colPickImg.setImageBitmap(ColPickBmp);
  }
コード例 #2
0
ファイル: Main.java プロジェクト: AoEiuV020/android-training
  /**
   * 自定义的方法,简单绘制一些基本图形
   *
   * @param mCanvas 把图形画在mCanvas上
   */
  public void canvasMethod(Canvas mCanvas) {

    // 创建对应坐标的矩形区域
    RectF mArc = new RectF(mX, mY - 70, mX + 50, mY - 20);
    // 画填充弧,在矩形区域内,从弧的最右边开始,画270度,然后再通过连接圆心来填充
    mCanvas.drawArc(mArc, 0, 270, true, mPaint);

    // 获得icon的Bitmap对象
    Bitmap mBitmap = Bitmap.createBitmap(100, 100, Bitmap.Config.ARGB_8888);
    // 画图片
    mCanvas.drawBitmap(mBitmap, mX, mY, mPaint);

    // 画圆,(x轴,y轴,半径,画笔)
    mCanvas.drawCircle(mX + 10, mY + 60, 10, mPaint);

    // 画一条线,(起点横坐标,起点纵坐标,终点横坐标,终点纵坐标,画笔)
    mCanvas.drawLine(mX, mY + 75, mX + 20, mY + 75, mPaint);
    // 画多条线,(坐标数组,画笔)坐标数组里每四个值构成一条线
    mCanvas.drawLines(
        new float[] {mX + 50, mY + 45, mX + 50, mY + 75, mX + 60, mY + 45, mX + 60, mY + 75},
        mPaint);

    // 创建对应矩形区域
    RectF mOval = new RectF(mX, mY + 80, mX + 60, mY + 110);
    // 画椭圆
    mCanvas.drawOval(mOval, mPaint);

    /*
     * Paint qPaint = new Paint(); qPaint.setColor(Color.RED);
     * mCanvas.drawPaint(qPaint);
     */

    // 重置Path里的所有路径
    mPath.reset();
    // 设置Path的起点
    mPath.moveTo(mX, mY + 120);
    // 第二个点
    mPath.lineTo(screenW - 10, mY + 120);
    // 第三个点
    mPath.lineTo(screenW - 10, mY + 150);
    // 画出路径,这里画的是三角形
    mCanvas.drawPath(mPath, mPaint);

    // 重置Path里的所有路径
    qPath.reset();
    // 设置Path的起点
    qPath.moveTo(qStartX, qStartY);
    // 设置贝塞尔曲线的控制点坐标和终点坐标
    qPath.quadTo(qControlX, qCOntrolY, qEndX, qEndY);
    // 画出贝塞尔曲线
    mCanvas.drawPath(qPath, qPaint);

    // 画点
    mCanvas.drawPoint(mX, mY + 155, qPaint);
    // 画多个点,坐标数组每两个值代表一个点的坐标
    mCanvas.drawPoints(new float[] {mX, mY + 160, mX + 5, mY + 160, mX + 5, mY + 160}, qPaint);

    // 画矩形
    mCanvas.drawRect(mX, mY + 170, mX + 100, mY + 220, mPaint);

    // 设置矩形区域
    RectF mRect = new RectF(mX, mY + 230, mX + 100, mY + 260);
    // 画圆角矩形,这个方法的第二第三个参数在后面有图讲解
    mCanvas.drawRoundRect(mRect, 10, 10, mPaint);

    // 画文本
    mCanvas.drawText("drawText", mX, mY + 290, mPaint);
    // 画文本,数组里每两个值代表文本的一个字符的坐标,数组的坐标可以比字符串里的字符多,但不可以少
    mCanvas.drawPosText(
        "哈哈你好",
        new float[] {mX, mY + 310, mX + 20, mY + 310, mX + 40, mY + 310, mX + 60, mY + 310},
        mPaint);

    // 重置Path
    tPath.reset();
    // 添加一个圆形路径,坐标,半径,方向(顺时针还是逆时针)
    tPath.addCircle(mX + 10, mY + 340, 10, Path.Direction.CW);
    // 画出路径
    mCanvas.drawPath(tPath, qPaint);
    // 把文本画在路径上,但不会画出路径
    mCanvas.drawTextOnPath("draw", tPath, 30, 0, mPaint);
  }