Android自定义加载loadingview动画组件

package com.hysmarthotel.view;

import com.hysmarthotel.roomcontrol.R;
import com.hysmarthotel.util.EaseInOutCubicInterpolator;

import android.animation.TimeInterpolator;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Point;
import android.util.AttributeSet;
import android.view.View;
import android.view.animation.AnimationUtils;

public class CircleProgress extends View {

 private static final int RED = 0xFFE5282C;
 private static final int YELLOW = 0xFF1F909A;
 private static final int BLUE = 0xFFFC9E12;
 private static final int COLOR_NUM = 3;
 private int[] COLORS;
 private TimeInterpolator mInterpolator = new EaseInOutCubicInterpolator();

 private final double DEGREE = Math.PI / 180;
 private Paint mPaint;
 private int mViewSize;
 private int mPointRadius;
 private long mStartTime;
 private long mPlayTime;
 private boolean mStartAnim = false;
 private Point mCenter = new Point();

 private ArcPoint[] mArcPoint;
 private static final int POINT_NUM = 15;
 private static final int DELTA_ANGLE = 360 / POINT_NUM;
 private long mDuration = 3600;

 public CircleProgress(Context context) {
  super(context);
  init(null, 0);
 }

 public CircleProgress(Context context, AttributeSet attrs) {
  super(context, attrs);
  init(attrs, 0);
 }

 public CircleProgress(Context context, AttributeSet attrs, int defStyle) {
  super(context, attrs, defStyle);
  init(attrs, defStyle);
 }

 private void init(AttributeSet attrs, int defStyle) {
  mArcPoint = new ArcPoint[POINT_NUM];

  mPaint = new Paint();
  mPaint.setAntiAlias(true);
  mPaint.setStyle(Paint.Style.FILL);

  TypedArray a = getContext().obtainStyledAttributes(attrs, R.styleable.CircleProgress, defStyle, 0);
  int color1 = a.getColor(R.styleable.CircleProgress_color1, RED);
  int color2 = a.getColor(R.styleable.CircleProgress_color2, YELLOW);
  int color3 = a.getColor(R.styleable.CircleProgress_color3, BLUE);
  a.recycle();

  COLORS = new int[]{color1, color2, color3};
 }

 @Override
 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
  int defaultSize = getResources().getDimensionPixelSize(R.dimen.default_circle_view_size);
  int width = getDefaultSize(defaultSize, widthMeasureSpec);
  int height = getDefaultSize(defaultSize, heightMeasureSpec);
  mViewSize = Math.min(width, height);
  setMeasuredDimension(mViewSize, mViewSize);
  mCenter.set(mViewSize / 2, mViewSize / 2);

  calPoints(1.0f);
 }

 @Override
 protected void onDraw(Canvas canvas) {
  canvas.save();
  canvas.translate(mCenter.x, mCenter.y);

  float factor = getFactor();
  canvas.rotate(36 * factor);
  float x, y;
  for (int i = 0; i  1f) {
   itemFactor = 1f;
  }
  return mInterpolator.getInterpolation(itemFactor);
 }

 public void startAnim() {
  mPlayTime = mPlayTime % mDuration;
  mStartTime = AnimationUtils.currentAnimationTimeMillis() - mPlayTime;
  mStartAnim = true;
  postInvalidate();
 }

 public void reset() {
  stopAnim();
  mPlayTime = 0;
  postInvalidate();

 }

 public void stopAnim() {
  mStartAnim = false;
 }

 public void setInterpolator(TimeInterpolator interpolator) {
  mInterpolator = interpolator;
 }

 public void setDuration(long duration) {
  mDuration = duration;
 }

 public void setRadius(float factor) {
  stopAnim();
  calPoints(factor);
  startAnim();
 }

 static class ArcPoint {
  float x;
  float y;
  int color;

  ArcPoint(float x, float y, int color) {
   this.x = x;
   this.y = y;
   this.color = color;
  }
 }

}

package com.hysmarthotel.util;

import android.animation.TimeInterpolator;


public class EaseInOutCubicInterpolator implements TimeInterpolator {

 @Override
 public float getInterpolation(float input) {
  if ((input *= 2) <1.0f) {
   return 0.5f * input * input * input;
  }
  input -= 2;
  return 0.5f * input * input * input + 1;
 }

}

mProgressView = (CircleProgress)findViewById(R.id.progress_vie);
mProgressView.startAnim(); //开始
mProgressView.stopAnim(); //结束
mProgressView.setRadius(factor); //半径
mProgressView.reset(); //复原

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 16dp
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 200dp