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Extraction APK : what are .png# files?

I would like to extract the images from an android game.
Firstly, I took the APK on my windows 10 laptop then I extracted the files (rename files.apk to files.apk.zip and extracted it with 7zip).
Inside my folders I got many .png files but I get an error when I try to open one. Each .png file has another file with the same name but with .png#. Some even have 2 otherfiles with them : one with .skel (can't open this one too) and .atlas (I can open it with notepad):
Did I make mistakes? What can I do to "repair" all these png files?
Thank you for you help!

If you are authorised to do so then you can apktool.
Its easy to use and may that #png files will be converted to some meaningful resource.
Installation for Apktool
Windows:
Download Windows wrapper script (Right click, Save Link As apktool.bat)
Download apktool-2 (find newest here)
Rename downloaded jar to apktool.jar
Move both files (apktool.jar & apktool.bat) to your Windows directory (Usually C://Windows)
If you do not have access to C://Windows, you may place the two files anywhere then add that directory to your Environment Variables System PATH variable.
Try running apktool via command prompt
Link

stop eclipse from deleting folders inside "target"

I am developing a maven project with Spring mvc application with Eclipse. I have some cucumber-selenium test case to check the some behavior of app. I put the chromDriver.exe in the path target\classes\Driver.
When i want to run the application it complains about:
The project was not built due to "Could not delete '/CyberMall/target/classes/Driver'.". Fix the problem, then try refreshing this project and building it since it may be inconsistent CyberMall Unknown Java Problem
It seems that, it tries to delete the Driver folder inside the target, and it fails, so it cannot build the application.
So, is there any way to ask Eclipse to stop deleting the Driver folder?
The reason I have put the driver in this path is that, i can easily access to it using the below code.
File file = new File(CyberMallApplication.class.getClassLoader().getResource("Driver/chromedriver.exe").getFile());
String driverPath=file.getAbsolutePath();
System.out.println(driverPath);
System.setProperty("webdriver.chrome.driver",driverPath);
If i put it into the resources, i don't know how to access it?

I think it's not a good practice to put a file that should be used in the targer folder.
The target folder should be clean at every maven install so the content is deleted.
You can put your file in the resources folder insted.
Take a look at that link : https://maven.apache.org/guides/introduction/introduction-to-the-standard-directory-layout.html
The target directory is used to house all output of the build.
The content of the resource directory will be put inside WEB-INF/classes. So you can adapt your resources folder to have your folders like you already have.
resources/Driver/chromedriver.exe

You should put chromedriver.exe to src/main/resources and set relative path in the system properties
System.setProperty("webdriver.chrome.driver", "src/main/resources/chromedriver.exe");

Find a resource both in .jar and eclipse with the same String computation

I want to get the path to a resource for ImageIO to read out a BufferedImage from some .png s.
While developing the project I use a relative path to "/bin/stuff/icons/image.png" , but this will definetly not work when I put everything together into a .jar file, so I need a way to get the path to these resources both while testing in eclipse and when later running it within a .jar .

After a lot of trying out both finding the file and getting the input stream to the file I came to the conclusion that this approach works every time:
InputStream in = ClassLoader.getSystemClassLoader().getResourceAsStream(path)
BufferedImage image = ImageIO.read(in)
Where path is
"projectName/resourceFolder/" + nameOfResource.stuff
as found in the src directory of the eclipse project.
E.g.
"myProject/images/icon.png"
When getting only the resource and then getting the path of the resource to link to a file, you will get FileNotFoundExceptions when using a .jar (but not while testing with eclipse, so one should be warned to think that his code works).
And - no - I don't save images in the bin/ - but they are copied to this directory and thus I find them there while testing. Now everything seems to be working.

Don't put anything under the bin directory in Eclipse: if you run a clean on the project it will be erased.
What you can do is to define a new source folder like resources, and put the image there. This way it will be automatically copied to the bin folder.
If you include the resources folder into the Jar, it will be available in both environments by using something like:
ImageIO.read( getClass().getResource("/image.png") )
PS: You can evade using a different resources folder but mixing the sources and images will quickly pollute your source folder.

Where does Netbeans read files from?

I'm trying to read from a text file in Netbeans. In the top level of my project directory I have foo.txt. Then in my code I have:
File file = new File("foo.txt");
It throws a FileNotFoundException, however. It's a Java web application using Spring and Tomcat, but I'm not sure if those details matter since I'm running the whole thing inside Netbeans. Basically, I just want to know where I need to put the file so Netbeans will read it.
Update - good call guys, it's looking in Tomcat's bin directory. Now this may be a stupid question but, how would I go about getting it to look in my top level project directory? I feel like dropping text files into tomcat's bin would be innapropriate.

You can try printing the absolute path of the File object to see where it is looking on the filesystem.
System.out.println(file.getAbsolutePath());

I would use the following to figure out where to put the file:
System.out.println(System.getProperty("user.dir"));

To directly answer your question, If you're running an application on Tomcat, files will be opened from the current working directory. That will likely be the bin/ folder in your tomcat directory.
You can find out for sure where your program is looking by examining the result of file.getAbsolutePath().
However, for web applications, I would suggest putting files you need to read in your classpath so you don't have to depend on a certain file structure when you deploy your web application.

try System.getProperty("user.dir") to get current working directory

how to download folder containing files(pdf,png etc) from php server in android

i want to download folder containing files like pdf,jpg,png etc from web services.I have written a application that can download pdf,png file.But i want to download folder containing several files. So my question is- is it possible to download folder and if yes then how can i download folder from server in android. thank you

If you can download one file, why wouldn't you be able to download several? Create the folder on Android, queue the files and start the next download when the current is finished, filling the folder. Also Android supports ZIP, so that might be your best call.

Folder is nothing but an FILE but a different type of file. Once you get the folder you can list down the files in it. You already have URL with the folder, u just need to append the URL of the folder to the files in it and download them one by one.