用Canvas画带动画的渐变数字圆环
项目在github上的地址：
https://github.com/Hebin320/ArcChart
CSDN上的下载地址
http://download.csdn.net/detail/hebin320320/9498435
先放效果图
这是一个自定义view，布局就是一个简单的线性布局而已，通过addview的方式，将自定义view显示出来；
渐变圆以及外圈圆、外圈小圆是自定义view，其他三个文字是Textview；
布局代码：
"@+id/doughnutView_passenger"
android:layout_width="@dimen/margin_180"
android:layout_height="@dimen/margin_180"
android:layout_centerHorizontal="true"
android:layout_marginTop="@dimen/margin_20"
android:orientation="vertical" />
"@+id/tv_passenger_num"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_marginTop="@dimen/margin_50"
android:textColor="@color/white"
android:textSize="@dimen/margin_55" />
"@+id/tv_passenger_num_01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/tv_passenger_num"
android:layout_centerHorizontal="true"
android:textColor="@color/home_passenger"
android:textSize="@dimen/text_size_16" />
"@+id/tv_passenger_num_02"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/tv_passenger_num_01"
android:layout_centerHorizontal="true"
android:layout_marginTop="@dimen/margin_2"
android:textColor="@color/home_passenger"
android:textSize="@dimen/text_size_14" /> 自定义view代码：
public class HomeArcView extends View {
//圆环颜色
private int[] doughnutColors = {Color.parseColor("#42e7e0"), Color.parseColor("#91ffa1"), Color.parseColor("#5ef0c9")};
private int roundColor=ContextCompat.getColor(getContext(),R.color.home_passenger);
private Paint paint_white;
private static float currentValue = 0f;
private Paint paint = new Paint();
private float arc_y = 0f;
private float arc_y_1 = 0f;
private int score, mPage;
private int pointCount = 2;
private float tb;
private float doughnutWidth;
private RectF rectf;
public HomeArcView(Context context, int score) {
super(context);
setValue(score);
}
public HomeArcView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public HomeArcView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
private void initPaint() {
paint.reset();
paint.setAntiAlias(true);
}
public void setValue(int score) {
this.score = score;
Resources res = getResources();
tb = res.getDimension(R.dimen.margin_10);
doughnutWidth = 0.25f * tb;
//外圈圆
rectf = new RectF();
rectf.set(doughnutWidth * 2, doughnutWidth * 2, 17.5f * tb, 17.5f * tb);
ValueAnimator valueAnimator = ValueAnimator.ofFloat(currentValue, 360f);
valueAnimator.setInterpolator(new Interpolator() {
@Override
public float getInterpolation(float v) {
return 1 - (1 - v) * (1 - v) * (1 - v);
}
});
valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator valueAnimator) {
currentValue = (float) valueAnimator.getAnimatedValue();
invalidate();
}
});
valueAnimator.start();
//圆圈带颜色
paint_white = new Paint();
paint_white.setAntiAlias(true);
paint_white.setColor(roundColor);
paint_white.setStrokeWidth(tb * 0.2f);
paint_white.setTextAlign(Paint.Align.CENTER);
paint_white.setStyle(Paint.Style.STROKE);
//外圈圆第一部分动画，0 至 score-1
this.getViewTreeObserver().addOnPreDrawListener(
new ViewTreeObserver.OnPreDrawListener() {
public boolean onPreDraw() {
new thread();
getViewTreeObserver().removeOnPreDrawListener(this);
return false;
}
});
//外圈圆第二部分动画，score+1 至 100
this.getViewTreeObserver().addOnPreDrawListener(
new ViewTreeObserver.OnPreDrawListener() {
public boolean onPreDraw() {
new threadone();
getViewTreeObserver().removeOnPreDrawListener(this);
return false;
}
});
//外圈小圆动画，0 到 score
this.getViewTreeObserver().addOnPreDrawListener(
new ViewTreeObserver.OnPreDrawListener() {
public boolean onPreDraw() {
new threadtwo();
getViewTreeObserver().removeOnPreDrawListener(this);
return false;
}
});
}
@Override
protected void onDraw(Canvas canvas) {
initPaint();
//渐变色圆
drawSq(canvas);
//外圈小圆
drawPoint(canvas);
//外圈圆第一部分
drawOneSq(canvas);
//外圈圆第二部分
drawTwoSq(canvas);
}
/**
* 画内圈渐变圆
*/
private void drawSq(Canvas canvas) {
RectF rectF = new RectF(doughnutWidth * 6, doughnutWidth * 6, 16.5f * tb, 16.5f * tb);
paint.setStrokeWidth(doughnutWidth * 2);
paint.setStyle(Paint.Style.STROKE);
if (doughnutColors.length > 1) {
paint.setShader(new SweepGradient(7.5f * tb, 7.5f * tb, doughnutColors, null));
} else {
paint.setColor(doughnutColors[0]);
}
canvas.drawArc(rectF, 0, currentValue, false, paint);
}
/**
* 画外圆第一部分
*/
private void drawOneSq(Canvas canvas) {
canvas.rotate(0, getWidth() / 2, getHeight() / 2);
canvas.drawArc(rectf, -90, arc_y, false, paint_white);
}
class thread implements Runnable {
private Thread thread;
private int statek;
int count;
public thread() {
thread = new Thread(this);
thread.start();
}
public void run() {
while (true) {
switch (statek) {
case 0:
try {
Thread.sleep(400);
statek = 1;
} catch (InterruptedException e) {
}
break;
case 1:
try {
Thread.sleep(15);
arc_y += 3.6f;
count++;
postInvalidate();
} catch (InterruptedException e) {
e.printStackTrace();
}
break;
}
if (count >= score - 2)
break;
}
}
}
/**
* 画外圆第二部分
*/
private void drawTwoSq(Canvas canvas) {
canvas.rotate((float) ((score + 2) * 3.6), getWidth() / 2, getHeight() / 2);
canvas.drawArc(rectf, -90, arc_y_1, false, paint_white);
}
class threadone implements Runnable {
private Thread thread;
private int statek = 1;
int count = score + 2;
public threadone() {
thread = new Thread(this);
thread.start();
}
public void run() {
while (true) {
switch (statek) {
case 1:
try {
Thread.sleep(5);
arc_y_1 += 3.6f;
count++;
postInvalidate();
} catch (InterruptedException e) {
e.printStackTrace();
}
break;
}
if (count >= 100)
break;
}
}
}
/**
* 画外圆圆点
*/
private void drawPoint(Canvas canvas) {
Paint paint_big_text = new Paint();
paint_big_text.setAntiAlias(true);
paint_big_text.setColor(Color.WHITE);
paint_big_text.setTextAlign(Paint.Align.CENTER);
paint_big_text.setStyle(Paint.Style.FILL);
initPaint();
canvas.drawCircle((float) (9.0f * tb + 8.5f * tb * Math.sin(3.6 * pointCount * Math.PI / 180)),
(float) (9.0f * tb - 8.5f * tb * Math.cos(3.6 * pointCount * Math.PI / 180)), 10, paint_big_text);
}
class threadtwo implements Runnable {
private Thread thread;
private int statek = 0;
public threadtwo() {
thread = new Thread(this);
thread.start();
}
public void run() {
while (true) {
switch (statek) {
case 0:
try {
Thread.sleep(400);
statek = 1;
} catch (InterruptedException e) {
}
break;
case 1:
try {
Thread.sleep(15);
pointCount++;
postInvalidate();
} catch (InterruptedException e) {
e.printStackTrace();
}
break;
}
if (pointCount >= score)
break;
}
}
}
}在Activity中应用：
doughnutViewPassenger.removeAllViews();
doughnutViewPassenger.addView(new HomeArcView(this, 90));
BaseMethod.AnimaText(tvPassengerNum, 90);
tvPassengerNum01.setText("");
tvPassengerNum02.setText("");AnimaText方法：
/**
* 给一个TextView设置一个数字增长动画
* */
public static void AnimaText(RiseNumberTextView tv , int number){
// 设置数据
tv.withNumber(number);
// 设置动画播放时间
tv.setDuration(1500);
tv.start();
}数字增长动画，重写Textview：
/**
* 增长的数字接口
*
*/
public interface IRiseNumber {
/**
* 开始播放动画的方法
*/
public void start();
/**
* 设置小数
*
* @param number
* @return
*/
public void withNumber(float number);
/**
* 设置整数
*
* @param number
* @return
*/
public void withNumber(int number);
/**
* 设置动画播放时长
*
* @param duration
* @return
*/
public void setDuration(long duration);
/**
* 设置动画结束监听器
*
* @param callback
*/
public void setOnEndListener(RiseNumberTextView.EndListener callback);
}/**
* 自定义RiseNumberTextView继承TextView，并实现接口RiseNumberBase
*
*/
public class RiseNumberTextView extends TextView implements IRiseNumber {
private static final int STOPPED = 0;
private static final int RUNNING = 1;
private int mPlayingState = STOPPED;
private float number;
private float fromNumber;
/**
* 动画播放时长
*/
private long duration = 1500;
/**
* 1.int 2.float
*/
private int numberType = 2;
private DecimalFormat fnum;
private EndListener mEndListener = null;
final static int[] sizeTable = { 9, 99, 999, 9999, 99999, 999999, 9999999,
99999999, 999999999, Integer.MAX_VALUE };
/**
* 构造方法
*
* @param context
*/
public RiseNumberTextView(Context context) {
super(context);
}
/**
* 使用xml布局文件默认的被调用的构造方法
*
* @param context
* @param attr
*/
public RiseNumberTextView(Context context, AttributeSet attr) {
super(context, attr);
// setTextColor(context.getResources().getColor(R.color.red));
// setTextSize(30);
}
public RiseNumberTextView(Context context, AttributeSet attr, int defStyle) {
super(context, attr, defStyle);
}
/**
* 判断动画是否正在播放
*
* @return
*/
public boolean isRunning() {
return (mPlayingState == RUNNING);
}
/**
* 跑小数动画
*/
private void runFloat() {
ValueAnimator valueAnimator = ValueAnimator.ofFloat(fromNumber, number);
valueAnimator.setDuration(duration);
valueAnimator
.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator valueAnimator) {
setText(fnum.format(Float.parseFloat(valueAnimator
.getAnimatedValue().toString())));
if (valueAnimator.getAnimatedFraction() >= 1) {
mPlayingState = STOPPED;
if (mEndListener != null)
mEndListener.onEndFinish();
}
}
});
valueAnimator.start();
}
/**
* 跑整数动画
*/
private void runInt() {
ValueAnimator valueAnimator = ValueAnimator.ofInt((int) fromNumber,
(int) number);
valueAnimator.setDuration(duration);
valueAnimator
.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator valueAnimator) {
//设置瞬时的数据值到界面上
setText(valueAnimator.getAnimatedValue().toString());
if (valueAnimator.getAnimatedFraction() >= 1) {
//设置状态为停止
mPlayingState = STOPPED;
if (mEndListener != null)
//通知监听器，动画结束事件
mEndListener.onEndFinish();
}
}
});
valueAnimator.start();
}
static int sizeOfInt(int x) {
for (int i = 0;; i++){
if (x <= sizeTable[i])
return i + 1;
}
}
@Override
protected void onFinishInflate() {
super.onFinishInflate();
fnum = new DecimalFormat("##0.00");
}
/**
* 开始播放动画
*/
@Override
public void start() {
if (!isRunning()) {
mPlayingState = RUNNING;
if (numberType == 1)
runInt();
else
runFloat();
}
}
/**
* 设置一个小数进来
*/
@Override
public void withNumber(float number) {
this.number = number;
numberType = 2;
if (number > 1000) {
fromNumber = number
- (float) Math.pow(10, sizeOfInt((int) number) - 1);
} else {
fromNumber = number / 2;
}
}
/**
* 设置一个整数进来
*/
@Override
public void withNumber(int number) {
this.number = number;
numberType = 1;
if (number > 1000) {
fromNumber = number
- (float) Math.pow(10, sizeOfInt((int) number) - 2);
} else {
fromNumber = number / 2;
}
}
/**
* 设置动画播放时间
*/
@Override
public void setDuration(long duration) {
this.duration = duration;
}
/**
* 设置动画结束监听器
*/
@Override
public void setOnEndListener(EndListener callback) {
mEndListener = callback;
}
/**
* 定义动画结束接口
*
*
*/
public interface EndListener {
/**
* 当动画播放结束时的回调方法
*/
public void onEndFinish();
}
}