peng8350 / flutter_gifimage Goto Github PK

Failed assertion: line 582 pos 12: '_pendingDimensions': is not true.

Flutter (Channel stable, 1.22.2)

内存溢出了

class SplashWidget extends StatefulWidget {
  SplashWidget({Key key}) : super(key: key);

  @override
  _SplashWidgetState createState() => _SplashWidgetState();
}

class _SplashWidgetState extends State<SplashWidget>
    with TickerProviderStateMixin {
  GifController gifController;

  @override
  void initState() {
    super.initState();
    gifController =
        GifController(vsync: this, duration: Duration(milliseconds: 500))
          ..addListener(() {
            if (gifController.value.ceil() >= 80) {
              gifController.stop();
              gifController.dispose();
              gifController = null;
            }
          });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: GifImage(
        image: AssetImage(A.assetsImagesAppWelcome),
        controller: gifController,
        fit: BoxFit.contain,
        onFetchCompleted: () {
          gifController.repeat(
              min: 2, max: 91, period: Duration(milliseconds: 500));
        },
      ),
    );
  }
}

你好，为什么我用普通的Image.asset放入gif之后，从另一页面返回后只停留在gif的第一帧？用了GifImage之后是最后一帧？这里哪段代码处理这个问题呢？

Whenever I ran the controller, it is crashing.

The method 'addListener' was called on null.
Receiver: null
Tried calling: addListener(Closure: () => void from Function '_listener@47216319':.)

in my class:

class Foo extends State<Bar> with TickerProviderStateMixin {
GifController gifController;

 @override
  void initState() {
  ...
    gifController = GifController(vsync: this);
    WidgetsBinding.instance.addPostFrameCallback((_){
      gifController.repeat(min: 0,max: 53,period: Duration(milliseconds: 200));
    });
    super.initState();
  }

...

@override
  Widget build(BuildContext context) {
...
 return Container(
...
 GifImage(
    controller: gifController,
    image: AssetImage("assets/inkman-hour-tick.gif"),
 ),
}
...

Unhandled Exception: Exception: Could not instantiate image codec.
E/flutter ( 3260): #0 _futurize (dart:ui/painting.dart:4304:5)
E/flutter ( 3260): #1 instantiateImageCodec (dart:ui/painting.dart:1682:10)
E/flutter ( 3260): #2 PaintingBinding.instantiateImageCodec (package:flutter/src/painting/binding.dart:88:12)
E/flutter ( 3260): #3 fetchGif (package:flutter_gifimage/flutter_gifimage.dart:243:49)

tried with

https://www.howtogeek.com/wp-content/uploads/2019/09/2.gif

return Align(
    child: GifImage(
      image: FileImage(File(path)),
      controller: _gitController,
    ),
    alignment: Alignment.center);

../../../../.pub-cache/hosted/pub.dev/gif-2.2.0/lib/gif.dart:348:51: Error: The method 'instantiateImageCodec' isn't defined for the class 'PaintingBinding'.

• 'PaintingBinding' is from 'package:flutter/src/painting/binding.dart' ('../../../flutter/packages/flutter/lib/src/painting/binding.dart').
  Try correcting the name to the name of an existing method, or defining a method named 'instantiateImageCodec'.
  Codec codec = await PaintingBinding.instance!.instantiateImageCodec(bytes);

I have ensured that I am using the latest versions of both Flutter and the gif package. However, I am still encountering this issue. Could you please provide guidance on how to resolve this error? If the method instantiateImageCodec has been deprecated or removed, I would appreciate information on alternative methods or any necessary code changes.

wo find in flutter,the gif speed up,I don't know how to do

Gif won't animate, just show first frame.

GifImage(
controller: controller1,
image: NetworkImage('https://xxicon.xxwolo.com/live_666_new3.gif'),
)

Unsupported operation: Infinity or NaN toInt

但是设置了每个图片的 max 又不一样。

This library should be migrated to the latest features of Flutter, including the null-safety.

After I used the plugin,The terminal will prompt me for this error

Tried with this:

https://www.howtogeek.com/wp-content/uploads/2019/09/2.gif (I downloaded to my sd card..)

return Align(
    child: GifImage(
      image: FileImage(File(path)),
      controller: _gifController,
      onFetchCompleted: () {
        _gifController.repeat(period: Duration(milliseconds: 300));
      },
    ),
    alignment: Alignment.center);

got an exception:

Unhandled Exception: Unsupported operation: Infinity or NaN toInt
E/flutter ( 4817): #0 double.toInt (dart:core-patch/double.dart:194:36)
E/flutter ( 4817): #1 GifImageState.didChangeDependencies.. (package:flutter_gifimage/flutter_gifimage.dart:163:49)
E/flutter ( 4817): #2 State.setState (package:flutter/src/widgets/framework.dart:1148:30)
E/flutter ( 4817): #3 GifImageState.didChangeDependencies. (package:flutter_gifimage/flutter_gifimage.dart:160:11)
E/flutter ( 4817): #4 _rootRunUnary (dart:async/zone.dart:1134:38)
E/flutter ( 4817): #5 _CustomZone.runUnary (dart:async/zone.dart:1031:19)
E/flutter ( 4817): #6 _FutureListener.handleValue (dart:async/future_impl.dart:139:18)
E/flutter ( 4817): #7 Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:680:45)
E/flutter ( 4817): #8 Future._propagateToListeners (dart:async/future_impl.dart:709:32)
E/flutter ( 4817): #9 Future._completeWithValue (dart:async/future_impl.dart:524:5)
E/flutter ( 4817): #10 Future._asyncComplete. (dart:async/future_impl.dart:554:7)
E/flutter ( 4817): #11 _rootRun (dart:async/zone.dart:1126:13)

How to animate gif without repeat? If i dont use repeat, gif won't display at all

Is there a way to get info of the GIF image about frames count and frame delay?

Some functions like repeat require max argument but I don't know the exact number of GIF frames. Specially when that GIF image is coming from network.

Also when the GIF has no frame delay information, the playback goes too fast. It should be defaulted to about 100ms if there is no delay information provided.

例子在 web 端运行报错：
RangeError (index): Index out of range: index should be less than 1: 1

我试了例子中的 animate.gif 和自己的 gif，发现 codec.frameCount 都等于 1，紧急求助

Dear peng8350,

First I would like to thank you for creating such an awesome and useful library. I am currently building an app for deaf people and I need to use many gifs for them to see in their language the meaning of all the objects in the app.
My problem is that as I need to use many gifs, I cannot keep them in a local file because it will make the app too heavy for upload in the stores.
I am trying to implement your GifImage widget (which works perfectly) with CachedNetworkImage like so:

CachedNetworkImage(
              imageUrl:
                  'https://firebasestorage.googleapis.com/v0/b/app-lsc-7310d.appspot.com/o/test.gif?alt=media',
              imageBuilder: (context, imageProvider) => GifImage(
                controller: controller,
                image: imageProvider,
              ),
              placeholder: (context, url) => CircularProgressIndicator(),
              errorWidget: (context, url, error) => Icon(Icons.error),
            ),

But I get an error because if I put the imageProvider in your image (although both are imageProvider objects, in your function I guess this alternative is not considered, so I get the following error:

[VERBOSE-2:shell.cc(242)] Dart Unhandled Exception: NoSuchMethodError: The getter 'buffer' was called on null.
Receiver: null
Tried calling: buffer, stack trace: #0      Object.noSuchMethod (dart:core-patch/object_patch.dart:54:5)
#1      fetchGif (package:flutter_gifimage/flutter_gifimage.dart:243:76)
#2      GifImageState.didChangeDependencies (package:flutter_gifimage/flutter_gifimage.dart:158:7)
#3      StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:4653:11)
#4      ComponentElement.mount (package:flutter/src/widgets/framework.dart:4469:5)
#5      Element.inflateWidget (package:flutter/src/widgets/framework.dart:3541:14)
#6      Element.updateChild (package:flutter/src/widgets/framework.dart:3303:20)
#7      SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:5981:14)
#8      Element.updateChild (package:flutter/src/widgets/framework.dart:3293:15)
#9      ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4520:16)
#10<…>

Do you think you can help me figure out how I can implement both libraries and for them to work good together?

Best regards,

Manuela