畫圓 自定義 iew-自定義的View鋪滿了整個屏幕,本來讓它只顯示內容大小，在xml中wrap_content無效

自定義的View鋪滿了整個屏幕,本來讓它只顯示內容大小，在xml中wrap_content無效

protected void onDraw(Canvas canvas) {
// TODO Auto-generated method stub

    Paint mPaint = new Paint();
    mPaint.setAntiAlias(true);
    mPaint.setStyle(Paint.Style.STROKE);
    mPaint.setColor(Color.parseColor("#26ffffff"));
    mPaint.setStrokeWidth(3);
    canvas.drawCircle(80, 80, 80, mPaint);

    Paint arcPaint = new Paint();
    arcPaint.setAntiAlias(true);
    arcPaint.setStyle(Paint.Style.STROKE);
    arcPaint.setColor(Color.parseColor("#d08cc9"));
    arcPaint.setStrokeWidth(3);
    RectF mRectF = new RectF(0, 0, 160, 160);
    canvas.drawArc(mRectF, 0f, 90f, false, arcPaint);

    super.onDraw(canvas);

}   

最佳回答：

這是你畫上去的內容，view當然不知道內容多大了，如果這樣，你就要設置view的長和寬才行