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GameOfLifeView | simple Android view that displays Conway | Animation library

 by   thiagokimo Java Version: 1.0.2 License: Apache-2.0

 by   thiagokimo Java Version: 1.0.2 License: Apache-2.0

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kandi X-RAY | GameOfLifeView Summary

GameOfLifeView is a Java library typically used in User Interface, Animation applications. GameOfLifeView has no bugs, it has no vulnerabilities, it has build file available, it has a Permissive License and it has low support. You can download it from GitHub, Maven.
This is a custom Android view which displays Conway's Game of Life. I've done to display the results of my learnings of Test Driven Development.
Support
Support
Quality
Quality
Security
Security
License
License
Reuse
Reuse

kandi-support Support

  • GameOfLifeView has a low active ecosystem.
  • It has 20 star(s) with 6 fork(s). There are 1 watchers for this library.
  • It had no major release in the last 12 months.
  • GameOfLifeView has no issues reported. There are no pull requests.
  • It has a neutral sentiment in the developer community.
  • The latest version of GameOfLifeView is 1.0.2
GameOfLifeView Support
Best in #Animation
Average in #Animation
GameOfLifeView Support
Best in #Animation
Average in #Animation

quality kandi Quality

  • GameOfLifeView has 0 bugs and 0 code smells.
GameOfLifeView Quality
Best in #Animation
Average in #Animation
GameOfLifeView Quality
Best in #Animation
Average in #Animation

securitySecurity

  • GameOfLifeView has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
  • GameOfLifeView code analysis shows 0 unresolved vulnerabilities.
  • There are 0 security hotspots that need review.
GameOfLifeView Security
Best in #Animation
Average in #Animation
GameOfLifeView Security
Best in #Animation
Average in #Animation

license License

  • GameOfLifeView is licensed under the Apache-2.0 License. This license is Permissive.
  • Permissive licenses have the least restrictions, and you can use them in most projects.
GameOfLifeView License
Best in #Animation
Average in #Animation
GameOfLifeView License
Best in #Animation
Average in #Animation

buildReuse

  • GameOfLifeView releases are available to install and integrate.
  • Deployable package is available in Maven.
  • Build file is available. You can build the component from source.
  • Installation instructions, examples and code snippets are available.
  • It has 847 lines of code, 82 functions and 27 files.
  • It has medium code complexity. Code complexity directly impacts maintainability of the code.
GameOfLifeView Reuse
Best in #Animation
Average in #Animation
GameOfLifeView Reuse
Best in #Animation
Average in #Animation
Top functions reviewed by kandi - BETA

kandi has reviewed GameOfLifeView and discovered the below as its top functions. This is intended to give you an instant insight into GameOfLifeView implemented functionality, and help decide if they suit your requirements.

  • Draw all cells in world .
  • Ensure that the styleable attributes are set .
  • Compares two cell objects .
  • Called when the activity is created .
  • Configures the activity s toolbar .
  • Configures the RecyclerView .
  • Starts the resume view .
  • Stop life view .
  • Mark this object as alive .

GameOfLifeView Key Features

A simple Android view that displays Conway's Game of Life. I've learnt the principles of TDD doing this

Setup

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dependencies {
    compile 'com.github.thiagokimo:gameoflifeview:1.0.2'
}

Through XML

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<io.kimo.gameoflifeview.view.GameOfLifeView
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  game_of_life_view:proportion="20"
  game_of_life_view:aliveCellColor="#FF0000"
  game_of_life_view:deadCellColor="#0000FF"/>

Through Code

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@Override 
protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  gameOfLifeView = new GameOfLifeView(this);
  gameOfLifeView.setProportion(20);
  gameOfLifeView.setDeadColor(Color.RED);
  gameOfLifeView.setAliveColor(Color.BLUE);
  setContentView(gameOfLifeView);
}

License

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Copyright 2011, 2012 Thiago Rocha

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

Community Discussions

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QUESTION

Xamarin.Forms animation inside Listview stops working if collection changes

Asked 2022-Mar-22 at 05:34

I am having a hard time figuring what's going on with my animation.

Viewmodel is composed of an ObservableCollection and every item contains a child ObservableCollection.

Parents collection is bound to a BindableLayout. The ItemTemplate of that layout contains a Listview to display child's elements.

<StackLayout BindableLayout.ItemsSource ="{Binding Parents}">
    <BindableLayout.ItemTemplate>
        <DataTemplate x:DataType="models:ParentRows">
            <StackLayout>      
                <Grid BackgroundColor="White" >
                     <!-- Some bindable content there -->
                </Grid>
            
               <ListView ItemsSource="{Binding Childs}" CachingStrategy="RecycleElementAndDataTemplate" RowHeight="50">
                    <ListView.ItemTemplate>
                        <DataTemplate x:DataType="models:ChildRows">
                            <ViewCell>
                                <StackLayout BackgroundColor="White">
                                    <controls:AnimatedGrid Refresh="{Binding Animation}"
                                          <!-- Some bindable content there -->
                                    </controls:AnimatedGrid>
                                </StackLayout>
                            </ViewCell>
                        </DataTemplate>
                    </ListView.ItemTemplate>
                </ListView>
            </StackLayout>
        </DataTemplate>
    </BindableLayout.ItemTemplate>
</StackLayout>

I am using an AnimatedGrid on the child listview, this control is inherinting from Grid. It has an extra BindableProperty nammed Refresh and an Animation code that gets called whenever Refresh property changes.

        private async void AnimateItem()
        {
            await Device.InvokeOnMainThreadAsync(() =>
            {
                this.RotateTo(360,500);
            });
        }

Everything works fine until i start filtering the list. Once i filter the list, subsequent call of AnimateItem will have no effect. To be more precise, if parent item got removed from list, and then added again, childs of this parent will never animate again. Filtering the List consist of Removing/Inserting parents to the observable collection (myCollection.Remove(item), myCollection.Insert(index, item), using Collection methods from framework).

This does not seems to be an observable collection binding issue, as values inside parent and childs collection still update perfectly find. Changing CachingStrategy also have no impact on the issue.

I found that, if i replace the ListView control by a CollectionView, the problem disappear. However, i realy want to find a solution that would alow me to keep the listview control as switching to CollectionView would introduce to many other undesirable effect.

Edit 22/02/2022 : I made a sample project to reproduce the issue on github.

  • Basicaly, you can click the "Rotate Random" multiple time to make random child spin.
  • Once you click the "Remove and add 2 parent", you can see that the removed/reinserted items does not rotate anymore.

Edit 15/03/2022 : I am still not able to figure what's wrong. However, for test purpose, i added in the control constructor, a task.delay followed by an animation call, and this call is working on filtered items. That's beyond my understanding.

ANSWER

Answered 2022-Mar-22 at 05:16

The solution

In your AnimatedGrid class, add an isAttached flag, and add the following lines to your OnPropertyChanged override:

bool isAttached = false;

protected override void OnPropertyChanged([CallerMemberName] string propertyName = null)
{
    base.OnPropertyChanged(propertyName);

    if (propertyName == "Renderer")
    {
        isAttached = !isAttached;
        if (!isAttached) this.RemoveBinding(RefreshProperty);
    }

    if (propertyName == nameof(Refresh))
    {
    ...

The why

Disclaimer: it took me a long time to figure out what was going on here, and although i was able to fix the problem, i would not claim that i completely and perfectly understand it. I believe this is a bug in Xamarin, and in your case i would file an issue in Github (although maybe MAUI will have this corrected...)

When a ChildItem is removed (do Filter), the old ChildItem-AnimatedGrid's Refresh property remains bound to the ChildItem's AnimationInt property.

When a ChildItem is added again (remove Filter), a new view is created.

Now the problem is evident: when the ChildItem's AnimationInt property changes (tap on ROTATE RANDOM button) the old ChildItem-AnimatedGrid's Refresh is notified, and then the old View is rotated, but the new ramains unchanged (it does not rotate).


Once the problem is understood, we need to figure out how to remove the binding of the old view when the view is dettached: well, to do this i used the fact that the VisualElement's Renderer property is set/modified when the element is attached and again when it is detached: The fist time it is called i set the isAttached flag to true. The second time it is called i set the flag to false, and i remove the binding. Removing the binding of the old View allows the new View to be correctly bound.

Source https://stackoverflow.com/questions/71190208

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install GameOfLifeView

You can download it from GitHub, Maven.
You can use GameOfLifeView like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the GameOfLifeView component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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