/
SplashView.java
194 lines (180 loc) · 6.03 KB
/
SplashView.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
package com.chs.androiddailytext.netease;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.ValueAnimator;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import androidx.annotation.Nullable;
import android.util.AttributeSet;
import android.view.View;
import android.view.animation.LinearInterpolator;
import android.view.animation.OvershootInterpolator;
import com.chs.androiddailytext.R;
/**
* @author chs
* 时间:2019/3/26
* 描述:
*/
public class SplashView extends View {
/**
* 绘制旋转圆的画笔和绘制水波纹的画笔
*/
private Paint mPaint,mHollowPaint;
/**
* 旋转圆的中心坐标
*/
private int mCenterX;
private int mCenterY;
/**
* 小球的颜色数组
*/
private int[] mCircleColors;
/**
* 大圆的半径
*/
private float mRotateRadius = 90;
/**
* 小圆的半径
*/
private float mCircleRadius = 18;
/**
* 水波纹的圆圈半径
*/
private float mHollowRadius = 0;
/**
* 屏幕对角线的一般,水波纹动画的圆的半径
*/
private float mDistance;
/**
* 属性动画旋转的角度
*/
private float mCurrentAngle;
/**
* 是否绘制水波纹效果
*/
private boolean isRipple = false;
public SplashView(Context context) {
this(context,null);
}
public SplashView(Context context, @Nullable AttributeSet attrs) {
this(context, attrs,0);
}
public SplashView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init(context);
}
private void init(Context context) {
mCircleColors = context.getResources().getIntArray(R.array.splash_circle_colors);
mPaint = new Paint();
mPaint.setAntiAlias(true);
mPaint.setStyle(Paint.Style.FILL);
mHollowPaint = new Paint();
mHollowPaint.setAntiAlias(true);
mHollowPaint.setColor(Color.WHITE);
mHollowPaint.setStyle(Paint.Style.STROKE);
initRotateAnimator();
}
/**
* 水波纹动画
*/
private void initRippleAnimator() {
ValueAnimator rippleAnimator = ValueAnimator.ofFloat(mCircleRadius, mDistance);
rippleAnimator.setDuration(1200);
rippleAnimator.setInterpolator(new LinearInterpolator());
rippleAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
isRipple = true;
mHollowRadius = (float) animation.getAnimatedValue();
invalidate();
}
});
rippleAnimator.start();
}
/**
* 聚合动画
*/
private void initAggregationAnimator() {
ValueAnimator aggregationAnimator = ValueAnimator.ofFloat(mCircleRadius, mRotateRadius);
aggregationAnimator.setDuration(500);
aggregationAnimator.setInterpolator(new OvershootInterpolator(10f));
aggregationAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
mRotateRadius = (float) animation.getAnimatedValue();
invalidate();
}
});
aggregationAnimator.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
super.onAnimationEnd(animation);
initRippleAnimator();
}
});
aggregationAnimator.reverse();
}
/**
* 旋转动画
*/
private void initRotateAnimator() {
ValueAnimator rotateAnimator = ValueAnimator.ofFloat(0, (float) (Math.PI * 2));
rotateAnimator.setDuration(1000);
rotateAnimator.setRepeatCount(2);
rotateAnimator.setInterpolator(new LinearInterpolator());
rotateAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
mCurrentAngle = (float) animation.getAnimatedValue();
invalidate();
}
});
rotateAnimator.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
super.onAnimationEnd(animation);
initAggregationAnimator();
}
});
rotateAnimator.start();
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
mCenterX = getWidth()/2;
mCenterY = getHeight()/2;
//Math.hypot(x,y)返回 sqrt(x2 +y2)
mDistance = (float) (Math.hypot(w,h)/2);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
if(isRipple){
float strokeWidth = (mDistance - mHollowRadius);
mHollowPaint.setStrokeWidth(strokeWidth);
float radius = strokeWidth / 2 + mHollowRadius;
canvas.drawCircle(mCenterX,mCenterY,radius,mHollowPaint);
}else {
drawSmallCircle(canvas);
}
}
/**
* 绘制6个小圆
* @param canvas
*/
private void drawSmallCircle(Canvas canvas) {
canvas.drawColor(Color.WHITE);
//一个完整的圆的弧度是2π,计算每个小圆之间的弧度
float angleEach = (float) (2*Math.PI/mCircleColors.length);
//循环绘制6个小圆
for (int i = 0; i < mCircleColors.length; i++) {
float angle = i*angleEach+mCurrentAngle;
float x = (float) (Math.cos(angle)*mRotateRadius+mCenterX);
float y = (float) (Math.sin(angle)*mRotateRadius+mCenterY);
mPaint.setColor(mCircleColors[i]);
canvas.drawCircle(x,y,mCircleRadius,mPaint);
}
}
}