多渐变色自定义view

public class MulticolorGradeView extends View {
    private float round;
    private RectF mBackGroundRect;
    private LinearGradient backGradient;
    //默认画笔
    private Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
    private Paint mPaintText = new Paint();
    int[] colorlist;

    public MulticolorGradeView(Context context, AttributeSet attrs) {
        super(context, attrs);
        //按钮多渐变色添加
        int color1 = Color.parseColor("#8600FF");
        int color2 = Color.parseColor("#FF009A");
        int color3 = Color.parseColor("#FF0099");
        int color4 = Color.parseColor("#FF7846");
        int color5 = Color.parseColor("#FF992E");
        int color6 = Color.parseColor("#FFDB00");
        //也可通过attr进行xml文件内的自定义设置
        if (attrs != null) {
            TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.MyGradient);
            color1 = typedArray.getColor(R.styleable.MyGradient_GradientcolorStart, color1);
            color2 = typedArray.getColor(R.styleable.MyGradient_GradientcolorafterStart, color2);
            color3 = typedArray.getColor(R.styleable.MyGradient_GradientcolorbeforeEnd, color3);
            color4 = typedArray.getColor(R.styleable.MyGradient_GradientcolorEnd, color4);
            round = typedArray.getDimension(R.styleable.MyGradient_Gradientround, dip2px(context, 10));
        }
        //设置抗锯齿
        mPaint.setAntiAlias(true);
        //设置防抖动
        mPaint.setDither(true);
        mPaint.setStyle(Paint.Style.FILL);
        mPaintText.setAntiAlias(true);
        mPaintText.setDither(true);

        colorlist = new int[]{color1, color2, color3, color4, color5, color6};
    }

    @Override
    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
        super.onSizeChanged(w, h, oldw, oldh);
        mBackGroundRect = new RectF(0, 0, w, h);
        backGradient = new LinearGradient(0, 0, w, 0, colorlist, null, Shader.TileMode.CLAMP);
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        mPaint.setShader(backGradient);
        //绘制背景 圆角矩形
        if (mBackGroundRect != null) {
            canvas.drawRoundRect(mBackGroundRect, round, round, mPaint);
        }
    }

    public static int dip2px(Context context, float dpValue) {
        float scale = context.getResources().getDisplayMetrics().density;
        return (int) (dpValue * scale + 0.5f);
    }
}

style

<!--自定义控件属性-->
    <declare-styleable name="MyGradient">
        <attr name="GradientcolorStart" format="reference" />
        <attr name="GradientcolorEnd" format="reference" />
        <attr name="GradientcolorafterStart" format="reference" />
        <attr name="GradientcolorbeforeEnd" format="reference" />
        <attr name="Gradientround" format="dimension" />
    </declare-styleable>