/**
外描边的宽度
*/
private float BORDER_STROCK;
/**
进度条进度矩形与控件边界的距离,≥BORDER_STROCK
*/
private float PROGRESS_STROCK;
//进度条的宽高
private int mWidth, mHeight;
/**
画进度条的矩形
*/
private RectF mRec《Android学习笔记总结+最新移动架构视频+大厂安卓面试真题+项目实战源码讲义》无偿开源 徽信搜索公众号【编程进阶路】tF;
public ColorGradientProgressBar(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
initView();
}
public ColorGradientProgressBar(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public ColorGradientProgressBar(Context context) {
this(context, null);
}
private void initView() {
mPaint = new Paint();
mPaint.setAntiAlias(true);
mRectF = new RectF();
BORDER_STROCK = getResources().getDimension(R.dimen.x3);
PROGRESS_STROCK = getResources().getDimension(R.dimen.x5);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
int round = mHeight / 2;//弧度为高度的一半
mRectF.set(0, 0, mWidth, mHeight);//第一层矩形(描边层)
mPaint.setColor(Color.parseColor(“#A3D8E8”));//第一层矩形颜色(进度条描边的颜色)
canvas.drawRoundRect(mRectF, round, round, mPaint);//画第一层圆角矩形
mPaint.setColor(Color.parseColor(“#474C4E”));//第二层矩形颜色(背景层颜色)
mRectF.set(BORDER_STROCK, BORDER_STROCK, mWidth - BORDER_STROCK, mHeight - BORDER_STROCK);//第二层矩形(背景层)
canvas.drawRoundRect(mRectF, round, round, mPaint);//画背景层圆角矩形(盖在描边层之上)
if (progress == 0)//进度为 0不画进度
return;
float section = progress / max;
//第三层矩形(进度层)
mRectF.set(PROGRESS_STROCK, PROGRESS_STROCK, (mWidth - PROGRESS_STROCK) * section, mHeight - PROGRESS_STROCK);
//创建线性颜色渐变器
LinearGradient shader = new LinearGradient(PROGRESS_STROCK, PROGRESS_STROCK,
(mWidth - PROGRESS_STROCK) * section, mHeight - PROGRESS_STROCK, GRADIENT_COLORS, null, Shader.TileMode.MIRROR);
mPaint.setShader(shader);//第三层矩形颜色(进度渐变色)
canvas.drawRoundRect(mRectF, round, round, mPaint);//画第三层(进度层)圆角矩形(盖在背景层之上)
mPaint.setShader(null);//清除之前传递的shader
}
/***
设置最大进度
@param maxCount
*/
public void setMax(float maxCount) {
this.max = maxCount;
}
/***
设置当前进度
@param currentCount
*/
public void setProgress(float currentCount) {
this.progress = currentCount > max ? max : currentCount;
invalidate();
}
public float getMax() {
return max;
}
/**
测量得到进度条的宽高
*/
@Override
