最近项目上需要做轨迹回放的功能，所以就着手去研究了，高德地图SDK是有点的移动的接口的，但是没有对播放暂停，加速减速进行封装，需要我们自己去自定义；
IMG_0679.jpg
直接上代码：
JVMoveAnimation.h
#import <Foundation/Foundation.h>
NS_ASSUME_NONNULL_BEGIN
@interface JVMoveAnimation : NSObject
@property (nonatomic, strong) MAMapView *mapView;
@property (nonatomic, copy) NSArray *tracks; //坐标集数据源
/*
减速滑动
*/
- (void)slowdown;
/*
开始滑动或者暂停滑动
*/
- (void)play:(BOOL)play cmpleteCallback:(void(^)(BOOL isFinished))completeCallback;
/*
加速滑动
*/
- (void)speedUp;
@end
NS_ASSUME_NONNULL_END
JVMoveAnimation.m 文件
#import "JVMoveAnimation.h"
@interface JVMoveAnimation ()
///暂停时所滑动的点
@property (nonatomic, assign) NSInteger suspendedCount;
///动画时长
@property (nonatomic, assign) CGFloat duration;
///速度 加减速
@property (nonatomic, assign) NSInteger speed;
///滑动的点数据集
@property (nonatomic, strong) NSMutableArray *animatedTracks;
@property (nonatomic, strong) MAAnimatedAnnotation* annotation;
@property (nonatomic, copy) void (^completeCallback)(BOOL isFinished);
@end
@implementation JVMoveAnimation
- (void)slowdown
{
if (self.annotation) {
NSArray *annos = [self.annotation allMoveAnimations];
for (MAAnnotationMoveAnimation *anno in annos) {
self.speed-=1;
self.suspendedCount = [anno passedPointCount]+1;
}
// [HUBManager showItoastMsg:@" 速度-5 " hide:YES afterDelay:1];
}
}
- (void)play:(BOOL)play cmpleteCallback:(void(^)(BOOL isFinished))completeCallback
{
self.completeCallback = completeCallback;
if (play) {
[self palyAnimated];
}
else //暂停
{
NSArray *annos = [self.annotation allMoveAnimations];
for (MAAnnotationMoveAnimation *anno in annos) {
//当前这个点要移动完成才暂停，所以移动的点数需要+1
self.suspendedCount = [anno passedPointCount]+1;
}
return;
}
}
- (void)speedUp
{
if (self.annotation) {
NSArray *annos = [self.annotation allMoveAnimations];
for (MAAnnotationMoveAnimation *anno in annos) {
self.speed+=1;
self.suspendedCount = [anno passedPointCount]+1;
}
// [HUBManager showItoastMsg:@" 速度+5 " hide:YES afterDelay:1];
}
}
#pragma mark ----------- 播放动画 -------------
- (void)palyAnimated
{
if (self.annotation) {
[self.mapView removeAnnotation:self.annotation];
self.annotation = nil;
}
NSInteger count;
if (self.suspendedCount) { ///暂停再播放
for (int i = 0; i < self.suspendedCount-1; i++) {
[self.animatedTracks removeObjectAtIndex:0]; //移除数据集中已经滑动的点
}
count = self.animatedTracks.count;
self.duration = self.duration - self.duration * (self.speed * 0.05);
self.suspendedCount = 0;
self.speed = 0;
}
else
{
self.animatedTracks = [NSMutableArray arrayWithArray:self.tracks];
count = self.animatedTracks.count;
self.duration = count*2;
}
CLLocationCoordinate2D coords[count];
for (int i = 0; i < count; i++) {
Track *track = self.animatedTracks[I];
coords[i].latitude = track.lat;
coords[i].longitude = track.lon;
}
MAAnimatedAnnotation *anno = [[MAAnimatedAnnotation alloc] init];
anno.coordinate = coords[0];
self.annotation = anno;
[self.mapView addAnnotation:self.annotation];
WEAKSELF(weakSelf);
[anno addMoveAnimationWithKeyCoordinates:coords count:count withDuration:self.duration withName:nil completeCallback:^(BOOL isFinished) {
if (isFinished) {
if (weakSelf.completeCallback) {
weakSelf.completeCallback(isFinished);
}
dispatch_async(dispatch_get_main_queue(), ^{
[weakSelf.mapView removeAnnotation:weakSelf.annotation];
weakSelf.annotation = nil;
});
}
} stepCallback:^(MAAnnotationMoveAnimation *currentAni) {
if (currentAni.passedPointCount == weakSelf.suspendedCount) {
[currentAni cancel]; //取消动画
if (weakSelf.speed != 0) { ///速度改变后，重新添加滑动动画
weakSelf.duration = currentAni.duration - currentAni.elapsedTime; //计算剩余的时间
[weakSelf palyAnimated]; //重新开启动画
}
}
}];
}
@end
