java黑线意外出现在错误的位置
我用画布绘制了这幅图,但由于某些原因,我在最左边的红色矩形和;包含数字1的灰色矩形。怎样才能摆脱这条线
public class RectangleTextView extends View {
private final Paint mBackPaint = new Paint();
private final Paint mRedPaint = new Paint();
private TextPaint mTextPaint;
public RectangleTextView(Context context, AttributeSet attrs) {
super(context, attrs);
int valueInPx = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 1, getResources().getDisplayMetrics());
int valueInSp = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, 20, getResources().getDisplayMetrics());
mRedPaint.setColor(Color.RED);
mBackPaint.setAntiAlias(false);
mBackPaint.setColor(Color.BLACK);
mBackPaint.setStrokeWidth(valueInPx);
mBackPaint.setStyle(Paint.Style.STROKE);
mTextPaint = new TextPaint(TextPaint.ANTI_ALIAS_FLAG);
mTextPaint.setColor(Color.BLACK);
mTextPaint.setTextAlign(Paint.Align.CENTER);
mTextPaint.setTextSize(valueInSp);
String pageTitle = getResources().getString(R.string.app_name);
}
@Override protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
if (getWidth() == 0)
return;
//draw end rectangles
int mSideRectWidth = 10;
canvas.drawRect(0, 0, mSideRectWidth, getHeight(), mRedPaint); //draw left end rectangle
canvas.drawRect(getWidth() - mSideRectWidth, 0, getWidth(), getHeight(), mRedPaint); //draw right end rectangle
//draw grey boxes
setBackgroundColor(Color.parseColor("#808080"));
int boxWidth = (getWidth() - mSideRectWidth) / 7;
for (int i = 0; i < 7; i++) {
//draw black lines
canvas.drawLine(mSideRectWidth + boxWidth * i, 0, mSideRectWidth + boxWidth * i, getHeight(), mBackPaint);
//draw text views
canvas.drawText(Integer.toString(i + 1), (i * boxWidth) + (boxWidth / 2), ((canvas.getHeight() / 2) - ((mTextPaint.descent() + mTextPaint.ascent()) / 2)), mTextPaint);
}
}
}
# 1 楼答案
你的循环画了7条黑线,我想你只需要6条线,把左边的第一条去掉
试试这个:
# 2 楼答案
你调用
drawLine
7次,i=0.1.2。。6.而是这样做你会去掉那条线,因为你不想画第一条线,你想让它充当分隔符
还有很多其他选择,比如制作配对和连接配对。你可以防备最后一个,然后划清界限。这是我想到的最简单的解决方案
# 3 楼答案
你不想看到“第一条”黑线,所以跳过“0”索引。。就像这样:
这应该会有帮助
编辑:另外,你没有考虑左边的红线,所以你不会“居中”(因为每边都有一条线,你只需要把它缩小1/2):