package com.novip.view; import android.animation.Animator; import android.animation.AnimatorListenerAdapter; import android.animation.ValueAnimator; import android.content.Context; import android.content.res.TypedArray; import android.graphics.Canvas; import android.graphics.Paint; import android.graphics.RectF; import android.support.annotation.Nullable; import android.util.AttributeSet; import android.view.View; import android.view.animation.LinearInterpolator; import com.novip.R; import com.novip.utils.DensityUtils; public class CountDownView extends View { //圆轮颜色 private int mRingColor; //圆轮宽度 private float mRingWidth; //圆轮进度值文本大小 private int mRingProgessTextSize; //宽度 private int mWidth; //高度 private int mHeight; private Paint mPaint; //圆环的矩形区域 private RectF mRectF; // private int mProgessTextColor; private int mCountdownTime; private float mCurrentProgress; private OnCountDownFinishListener mListener; public CountDownView(Context context) { this(context, null); } public CountDownView(Context context, @Nullable AttributeSet attrs) { this(context, attrs, 0); } public CountDownView(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.CountDownView); mRingColor = a.getColor(R.styleable.CountDownView_ringColor, context.getResources().getColor(android.R.color.white)); mRingWidth = a.getFloat(R.styleable.CountDownView_ringWidth, 6); mRingProgessTextSize = a.getDimensionPixelSize(R.styleable.CountDownView_progressTextSize, DensityUtils.sp2px(context, 10)); mProgessTextColor = a.getColor(R.styleable.CountDownView_progressTextColor, context.getResources().getColor(android.R.color.white)); mCountdownTime = a.getInteger(R.styleable.CountDownView_countdownTime, 3); a.recycle(); mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); mPaint.setAntiAlias(true); this.setWillNotDraw(false); } public void setCountdownTime(int mCountdownTime) { this.mCountdownTime = mCountdownTime; } @Override protected void onLayout(boolean changed, int left, int top, int right, int bottom) { super.onLayout(changed, left, top, right, bottom); mWidth = 2 * getMeasuredWidth() / 3; mHeight = 2 * getMeasuredHeight() / 3; mRectF = new RectF(0 + mRingWidth / 3, 0 + mRingWidth / 3, mWidth - mRingWidth / 3, mHeight - mRingWidth / 3); } @Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); /** *圆环 */ //颜色 mPaint.setColor(mRingColor); //空心 mPaint.setStyle(Paint.Style.STROKE); //宽度 mPaint.setStrokeWidth(mRingWidth); canvas.drawArc(mRectF, -90, mCurrentProgress - 360, false, mPaint); //绘制圆形,此处绘制的是图中红色区域 Paint circlePaint=new Paint(); circlePaint.setAntiAlias(true); circlePaint.setColor(getResources().getColor(R.color.gray_7d7d7d)); circlePaint.setAlpha(180); canvas.drawCircle(50,50,(mWidth/2-6),circlePaint); //绘制文本,可以根据需求进行更改,例如倒计时几秒 Paint textPaint = new Paint(); textPaint.setAntiAlias(true); textPaint.setTextAlign(Paint.Align.CENTER); // String text = mCountdownTime - (int) (mCurrentProgress / 360f * mCountdownTime) + ""; String text = "跳过"; textPaint.setTextSize(mRingProgessTextSize); textPaint.setColor(mProgessTextColor); //文字居中显示 Paint.FontMetricsInt fontMetrics = textPaint.getFontMetricsInt(); int baseline = (int) ((mRectF.bottom + mRectF.top - fontMetrics.bottom - fontMetrics.top) / 2); canvas.drawText(text, mRectF.centerX(), baseline, textPaint); } private ValueAnimator getValA(long countdownTime) { ValueAnimator valueAnimator = ValueAnimator.ofFloat(0, 100); valueAnimator.setDuration(countdownTime); valueAnimator.setInterpolator(new LinearInterpolator()); valueAnimator.setRepeatCount(0); return valueAnimator; } /** * 开始倒计时 */ public void startCountDown() { setClickable(false); ValueAnimator valueAnimator = getValA(mCountdownTime * 1000); valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { @Override public void onAnimationUpdate(ValueAnimator animation) { float i = Float.valueOf(String.valueOf(animation.getAnimatedValue())); mCurrentProgress = (int) (360 * (i / 100f)); invalidate(); } }); valueAnimator.start(); valueAnimator.addListener(new AnimatorListenerAdapter() { @Override public void onAnimationEnd(Animator animation) { super.onAnimationEnd(animation); //倒计时结束回调 if (mListener != null) { mListener.countDownFinished(); } setClickable(true); } }); } //倒计时监听,可在countDownFinished()方法中进行倒计时结束后的逻辑 public void setAddCountDownListener(OnCountDownFinishListener mListener) { this.mListener = mListener; } public interface OnCountDownFinishListener { void countDownFinished(); } }