Android自定义加载loading view动画组件

概述在github上找的一个有点酷炫的loading动画https://github.com/Fichardu/CircleProgress 我写写使用步骤 

在github上找的一个有点酷炫的loading动画https://github.com/Fichardu/CircleProgress 

我写写使用步骤 

自定义view（CircleProgress ）的代码 

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,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 < POINT_NUM; ++i) {   mPaint.setcolor(marcPoint[i].color);   float itemFactor = getItemFactor(i,factor);   x = marcPoint[i].x - 2 * marcPoint[i].x * itemFactor;   y = marcPoint[i].y - 2 * marcPoint[i].y * itemFactor;   canvas.drawCircle(x,y,mPoinTradius,mPaint);  }  canvas.restore();  if (mStartAnim) {   postInvalIDate();  } } private voID calPoints(float factor) {  int radius = (int) (mVIEwSize / 3 * factor);  mPoinTradius = radius / 12;  for (int i = 0; i < POINT_NUM; ++i) {   float x = radius * -(float) Math.sin(DEGREE * DELTA_ANGLE * i);   float y = radius * -(float) Math.cos(DEGREE * DELTA_ANGLE * i);   ArcPoint point = new ArcPoint(x,colorS[i % color_NUM]);   marcPoint[i] = point;  } } private float getFactor() {  if (mStartAnim) {   mPlayTime = AnimationUtils.currentAnimationTimeMillis() - mStartTime;  }  float factor = mPlayTime / (float) mDuration;  return factor % 1f; } private float getItemFactor(int index,float factor) {  float itemFactor = (factor - 0.66f / POINT_NUM * index) * 3;  if (itemFactor < 0f) {   itemFactor = 0f;  } else if (itemFactor > 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;  } }}

EaseInOutCubicInterpolator是自定义view（CircleProgress ）中要是用的一个工具 

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; }}

在activity中的调用（还有一些其他用法可以自己看看github上的源代码） 

mProgressVIEw = (CircleProgress)findVIEwByID(R.ID.progress_vIE);mProgressVIEw.startAnim(); //开始mProgressVIEw.stopAnim(); //结束mProgressVIEw.seTradius(factor); //半径mProgressVIEw.reset(); //复原

在xml文件中的布局 

<?xml version="1.0" enCoding="utf-8"?><absoluteLayout  xmlns:androID="http://schemas.androID.com/apk/res/androID" xmlns:circleprogress="http://schemas.androID.com/apk/res/com.hysmarthotel.roomcontrol"  //这个地方记得要加 //包名 androID:layout_wIDth="match_parent" androID:layout_height="match_parent" androID:background="@drawable/bg1" >  <com.hysmarthotel.vIEw.CircleProgress                   //类名  androID:ID="@+ID/progress_vIE"  androID:layout_x="350.5px"  androID:layout_y="150.0px"  androID:layout_wIDth="1140.0px"  androID:layout_height="700.0px"  circleprogress:color1="@androID:color/holo_red_light"   //这些参数就是通过xmlns:circleprogress，和attrs文件相关联的 　　　　circleprogress:color2="@androID:color/holo_green_light" 　　　　circleprogress:color3="@androID:color/holo_blue_light" />

自己在values目录中新建的attrs文件，这是与自定义view中自定义参数相关的

 <declare-styleable name="CircleProgress">  <attr name="color1" format="reference|color"/>  <attr name="color2" format="reference|color"/>  <attr name="color3" format="reference|color"/> </declare-styleable> 

自己在values目录中新建的dimens文件，这个只是几个颜色参数

 <?xml version="1.0" enCoding="utf-8"?><resources> <dimen name="activity_horizontal_margin">16dp</dimen> <dimen name="activity_vertical_margin">16dp</dimen> <dimen name="default_circle_vIEw_size">200dp</dimen></resources>

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