How to implement a GPS Playback Animation in Flutter? - flutter-animation

I have managed to implement live location animation in my app using google maps and looping through the given GPS Positions updating the marker's position though am I want also to create a GPS Playback Animation with a playback control like for media so that I can play, pause, resume, seek and reverse the animation. Thank You for any help!

Related

How can I crossfade 2 tracks using the Spotify ios-streaming-sdk?

I'd like to implement a crossfade feature for an iOS app where one track gradually fades out as the next track fades in to create a smooth transition.
Spotify does not allow the streaming of multiple tracks at once with the ios-streaming-sdk.
There should be a way to access the last 10 seconds of a track before it finishes playing, store it in a separate buffer, and mix it with the next track played.
Any guidance would be very appreciated.

How to get current play time of GVRVideoView

I'm using GoogleVR library for iOS to play VR video. I use GVRVideoView. But there is a problem that I don't know how to get current play time. I need to show a Slider on UI, that includes current play time.
https://developers.google.com/vr/ios/get-started
So, how can I get current play back time of GVRVideoView?
GVRVideoView has a delegate method
- (void)videoView:(GVRVideoView*)videoView didUpdatePosition:(NSTimeInterval)position;
You can do with the position, for example, set progress with position/videoView.duration.

Playing interactive videos with finger gestures in iOS

I am working on a kids ABC learning app which will be somewhat like this app.
Petting Zoo
The user can do these gestures... Swipe UP, DOWN, LEFT , RIGHT and TOUCH and each gesture has a small animation clip (approx duration 1 -3 secs each ) linked to it like the character jumping on Swipe UP, etc. There will also be an IDLE loopable movie which will be playing continuously when there is no input from user.
So I am trying to use videos in MP4 and M4V format for these gestures but the problem is that the videos are lagging just before playing. Means they dont play instantly upon doing a gesture but take a time of say micro second to load and play.
I am looking for output like the video above. You can see that the animations are so responsive and do not hang even for little time.
My developer once achieved such smooth output with the MP4 video clips but those clips didnt have audio embedded in them and then when he used videos with audio embedded in them, they were lagging again.
Can audio be the issue for lag here ? Or anything else you experts will like to suggest.
Please help guys. Yours inputs will be very valuable for me.
You can use - (void)replaceCurrentItemWithPlayerItem:(AVPlayerItem *)item of AVPlayer.
This methods helps you to load the new item to an existing AVPlayer.
Here is the important reference for playing multiple videos using single AVPlayer.

iOS control Animation or Video via swiping

Is it possible to control an animation or better a video via swiping over it?
I have:
an animation as video (~2sec playtime, can be converted to other file types if needed, but shouldn't be too big)
iOS >= 6.0
I want:
show the first frame of the animation
play the animation back and forward if the user moves his finger tip over the control with a speed, corresponding to the speed of the finger tip.
I'm experimenting with MPMoviePlayerController currently. Are there better Controls? Do you have any suggestions to solve this problem?

GaugeField progress forward and rewind when playing audio?

I'm developing a player Application which plays audio for some fixed time. I need to use Gaugefield such that it should fast-forward and rewind the Audio that is currently Playing.
I am able to get the time from the player and displaying on the screen. I need to update the time when the progress of Gaugefield is increased or decreased and at the same time I need to stream the player according to the level of the Gaugefield.
I used the sample code below but it is not working.
Player.stop();
Player.setMediaTime();
Player.start();
I am working on 6.0 OS.
Are you implementing a PlayerListener? If you implement PlayerListener, then you can use the playerUpdate() method to update your GaugeField.

Resources