Android实现球赛比分条效果 Android自定义控件实现球赛比分条效果

public class CustomScoreBar extends View {
 private Context context;
 private TypedValue typedValue;
 private static final int DEGREE =10;
 private int mColorLeft, mColorRight;
 private int mScoreLeft, mScoreRight;
 //各种画笔
 private Paint paintBar =new Paint();
 private Paint paintText=new Paint();
 public CustomScoreBar(Context context) {
 super(context);
 this.context=context;
 init();
 }
 
 public CustomScoreBar(Context context, AttributeSet attrs) {
 super(context, attrs);
 this.context=context;
 init();
 }
 
 public CustomScoreBar(Context context, AttributeSet attrs, int defStyleAttr) {
 super(context, attrs, defStyleAttr);
 this.context=context;
 init();
 }
 
 private void init() {
 //初始化数据，默认属性
 mColorLeft = Color.rgb(95, 112, 72);
 mColorRight = Color.rgb(69, 91, 136);
 mScoreLeft =5;
 mScoreRight =8;
 typedValue=new TypedValue();
 context.getTheme().resolveAttribute(R.attr.maintextclor,typedValue,true);
 }
 
 
 
 @Override
 protected void onDraw(Canvas canvas) {
 super.onDraw(canvas);
 float width=getWidth();
 float height=getHeight();
 //文字画笔设置
 paintText.reset();
 paintText.setAntiAlias(true);
 //文字的大小取控件宽度的十分之一和高度的二分之一的最小值
 paintText.setTextSize(Math.min(width / DEGREE, height) / 2);
 paintText.setColor(getResources().getColor(typedValue.resourceId));
 /*Paint.Align.CENTER：The text is drawn centered horizontally on the x,y origin*/
 paintText.setTextAlign(Paint.Align.CENTER);
 //绘制中间的横线的画笔
 paintBar.reset();
 paintBar.setAntiAlias(true);
 paintBar.setStyle(Paint.Style.STROKE);
 //画笔的高度为控件高度的十分之一
 paintBar.setStrokeWidth(height/10);
 //测量字体
 Paint.FontMetrics fontMetrics = paintText.getFontMetrics();
 float textBaseLineOffset = (fontMetrics.bottom - fontMetrics.top) / 2 - fontMetrics.bottom;
 //绘制左边的比分文字
 //把控件宽度分为10份，第一份和第十份分别绘制左边和右边的文字
 //中间的8份宽度绘制比分条
 canvas.drawText("" + mScoreLeft, width / DEGREE / 2, height / 2 + textBaseLineOffset, paintText);
 paintBar.setColor(mColorLeft);
 // drawLine(float startX, float startY, float stopX, float stopY,Paint paint)*/
 //按照比例绘制左边比分对应长度的比分条
 canvas.drawLine(width / DEGREE, height / 2, width / DEGREE + width * (DEGREE - 2) / DEGREE * mScoreLeft / (mScoreLeft + mScoreRight), height / 2, paintBar);
 //测量右边的比分文字
 fontMetrics = paintText.getFontMetrics();
 textBaseLineOffset = (fontMetrics.bottom - fontMetrics.top) / 2 - fontMetrics.bottom;
 //在控件宽度的最后十分之一绘制右边的比分数字
 canvas.drawText("" + mScoreRight, width-width / DEGREE / 2, height / 2 + textBaseLineOffset,paintText);
 paintBar.setColor(mColorRight);
 //绘制右边的比分对应长度的比分条
 canvas.drawLine(width/ DEGREE +width*(DEGREE -2)/ DEGREE * mScoreLeft /(mScoreLeft + mScoreRight),height/2,width*(DEGREE -1)/ DEGREE,height/2, paintBar);
 }
 
 public void setScores(int score1, int score2) {
 this.mScoreLeft =score1;
 this.mScoreRight =score2;
 invalidate();
 }
}