如题,时一个仿滴滴的轨迹动画处理,自己在网上结合资料自己做的,欢迎各位使用
思路:1.根据百度地图提供的的api获取LatLng点所对应的屏幕坐标Point
Projection projection =mMap.getProjection();
Point oldp1 = (projection.toScreenLocation(new LatLng(0.0,0.0)));
2.将Point集合转换为Path路径,
for(int i =0;i if(i>=1) { Point oldp1 = (projection.toScreenLocation(pts.get(i-1))); Point newp1 = (projection.toScreenLocation(pts.get(i))); Point oldp =newPoint((oldp1.x- w),(oldp1.y- h)); Point newp =newPoint((newp1.x- w),(newp1.y- h)); Path path2 =newPath(); path2.moveTo(oldp.x,oldp.y); path2.lineTo(newp.x,newp.y); path.addPath(path2); path2.close(); } } ObjectAnimator animx= ObjectAnimator.ofFloat(iv_car,"x","y",path); animx.setDuration(3000); animx.start(); private voidreBack2() { animx=newObjectAnimator(); Path path =newPath();//总路径 Projection projection =mMap.getProjection();//百度地图获取屏幕坐标转换的工具 inth =iv_car.getHeight();//计算要移动控件的高度 intw =iv_car.getWidth() /2;//计算要移动控件的宽度并找到中点 floatlen =0;//路径的总长度 PathMeasure pm =newPathMeasure();//路径获取的帮助器 for(inti =0;i if(i>=1) { Point oldp1 = (projection.toScreenLocation(pts.get(i-1)));//开始位置坐标 Point newp1 = (projection.toScreenLocation(pts.get(i)));//结束位置 Point oldp =newPoint((oldp1.x- w),(oldp1.y- h));//纠正控件显示坐标 Point newp =newPoint((newp1.x- w),(newp1.y- h));//纠正控件显示坐标 Path path2 =newPath(); path2.moveTo(oldp.x,oldp.y);//设置起点 path2.lineTo(newp.x,newp.y);//设置中点 path.addPath(path2);//将一段路径添加到总路径中 path2.close();//关闭 pm.setPath(path2,true);//关联帮助器 len = pm.getLength()+len;//添加到总路径中 } } path.close();//关闭 if(android.os.Build.VERSION.SDK_INT>= android.os.Build.VERSION_CODES.LOLLIPOP) {//ObjectAnimator设置路径的方法只有在api21之后可用 animx= ObjectAnimator.ofFloat(iv_car,"x","y",path);//设置动画路径以及控件,参数2和参数3不用动 String length = MathExtendUtils.qianweifenge(len);//把长度换算为1,000.00的形式 longl =1000; if(length.indexOf(",")>-1){ String a[] = length.split(","); l = Long.parseLong((a[0]+"000")); } animx.setDuration(l);//根据路径长度动态设置整个动画的所需时间 iv_car.setVisibility(View.VISIBLE); animx.start(); animx.addListener(newAnimator.AnimatorListener() {//监听 @Override public voidonAnimationStart(Animator animation) { iv_car.setVisibility(View.VISIBLE); } @Override public voidonAnimationEnd(Animator animation) { //要设置地图的手势动作,不然会出现错位 UiSettings settings =mMap.getUiSettings(); canClick=true; settings.setAllGesturesEnabled(true);//关闭一切手势操作 settings.setZoomGesturesEnabled(true);//获取是否允许缩放手势返回:是否允许缩放手势 iv_car.setVisibility(View.INVISIBLE); } @Override public voidonAnimationCancel(Animator animation) { } @Override public voidonAnimationRepeat(Animator animation) { } }); } } UiSettings settings =mMap.getUiSettings(); settings.setAllGesturesEnabled(false);//关闭一切手势操作 settings.setZoomGesturesEnabled(false);//获取是否允许缩放手势返回:是否允许缩放手势 3.使用ObjectAnimator完成属性动画
4.主要思路就是这样,接下来就是上整个方法了,我注释尽量多写点
注意:一定要在移动前禁用百度地图的所有手势动作
还有就是api21之前的可以用AnimatorSet实现,原理差不多,但是效果不会很好