Develop Reference

Gradle: download gradle takes "very long time", activity_main.xml keeps showing "Loading"

I have installed Android Studio today. I'm a newbie to Android development. I know that it has been asked several times, but my Android Studio is most updated as of now, so none of the solution seems to work. [AndroidStudio v3.6]
After the installation got over, I attempted to create an Empty Project. It opened the whole project as seen below,
After waiting for 7+ minutes (bottom-left), gradle is still not downloaded, and the activity_main.xml file keeps showing "Loading".
Solution 1 - Change the gradle location
I found this location to C:\Users\RAHUL.LAPTOP-DISIIAS2\.gradle\wrapper\dists\gradle-5.6.4-all\ankdp27end7byghfw1q2sw75f, but it contains two files - one is gradle-5.6.4-all.zip.part and other is gradle-5.6.4-all.zip.lck file.
Solution 2 - Invalidate and restart
Doesn't seem to work
Solution 3 - Change gradle settings to work in offline mode
The version I'm using doesn't have the option
How can I fix it?
Here is my gradle-wrapper.properties file:

First, check if you are connected to http\://services.gradle.org/distributions with ping command in Command Prompt. If you are connected, then change Proxy Settings in Android Studio to Use System Proxy. If it is downloading slowly again, your internet connection may be slow. Or you best fallow guidelines in this link : Gradle Download: Installing Manually
Then work in offline mode will appear in your settings.

IntelliJ Having problems running Gradle

I created a new LibGDX project, and I wanted to test it out, so I created my run configuration, which is with the simple command of run. What ends up happening is the program seems to complete two loops, and then it freezes. If I close the program with the exit button on the window, it closes with the message BUILD SUCCESSFUL, but if I stop it from inside IntelliJ, I get this error:
Could not execute build using Gradle distribution 'file:/C:/Users/Michael/gradle-2.5-bin.zip'.
The Gradle distribution was originally a website URL, but I changed it because I thought it could have been a download or extraction issue.
Even today, I started up the program, and left it alone for hours, but the result was the same.

This means when you encounter error at one point, the error appears again while redoing it.This may help you : delete everything that were downloaded during gradle build, it might be inside user .gradle folder or hidden folder app. After that again create new project with everything you need for future too which might download all required components. Make sure your internet connection does not get disconnected during download. You may use LibGDX 1.6.2 jar file

Netbeans project file generation extremely slow (unusable)

I've been having issues with a Java project that I've been working on for a while.
Starting about 1 or 2 weeks ago, whenever I use Netbeans (8.0.2) to generate a new file in the project (right click on package > new file), the wizard will hang for up to 10 minutes before releasing control back to me. The file is created after about 5 minutes. This doesn't happen with any other project, only this one; but I can't find anything different in my project's configuration compared to projects that work.
I created a bug report about this on the Netbeans bug tracker, but it hasn't been looked at in over a week. It has a copy of the Netbeans output log, and a profiling snapshot of the class generation.
I've tried reinstalling Netbeans (remaining at 8.0.2), which didn't help, and I don't really know what else I can do to locate the problem. If anyone has experienced anything like this, or has any advice on how I can track down the issue, it would be greatly appreciated.
Here is a link to my project on Dropbox. Feel free to download a copy, compile it, run it, etc.
I am using Windows 7 64-bit, and I am using the official Netbeans 8.0.2 from netbeans.org, launched straight from the desktop (I am not using any particular command line arguments or enviroment variables, as far as I know)

It turned out that the issue was that my Mercurial client was hanging when it made status calls, and Netbeans, due to a bug, was stuck waiting for it forever.
The issue with Mercurial can be worked around by deleting the Mercurial log file, and the bug with Netbeans was eventually fixed.

my eclipse install another app instead of mine in emulator

I'm having a problem with my eclipse i have edited my app and it's ready with no error shows but now when i run it into my emulator it runs another app i have in my eclipse so i deleted the app and still i run the application i want in the eclipse and still it shows the old app that i didn't even ask to install it in my emulator so it's installing an app that i don't have at first place in my eclipse i don't know how it is possible i cleaned my project and still the problem is there and changed my emulator still its install the old app for me

uninstall the app from the emulator and check in your run configuration about the running app and try with new emulator

Be sure you have selected in package explorer the app you want to run. Try to unistall the app from the emulator or create a new device on emulator. Hope this help.

Check the Run configuration: Run->Run configuration. Under the Android tab, choose your project. If you run in Debug, you have similar option too.
Another similar case I saw, is that some application was installed, but the name was not updated. Verify the names of your application in both the strings.xml and the Manifest. (If you create a project by duplicating another one, it might be the problem).

Netbeans 7.2 won't open on OS X

I installed Netbeans on OSX Mountain Lion running JDK 7. Everything was working fine. Then my machine for no reason crashed. After this I could no longer open Netbeans anymore.
If I try to start Netbeans from the commandline:
/Applications/NetBeans/NetBeans 7.2.app/Contents/MacOS/netbeans
Then it works fine. From there I can select Netbeans > About and confirm that my userdir and cachedir is:
User directory: /Users/<user>/Library/Application Support/NetBeans/7.2
Cache directory: /Users/<user>/Library/Caches/NetBeans/7.2
So, I deleted these directories and tried again, but alas, I can only start netbeans via the commandline.
Ideas appreciated...

Sounds to me like this is not a NetBeans problem at all, rather a problem with the bundle, such that OS X is not launching the app as it should.
To verify, I'd try opening NetBeans through Finder from the command line:
open -a "NetBeans 7.2.app"
This command will ask the system launcher to open the application as if you had clicked on the icon. In your case, it probably won't open. If this is true, then you know it's not something in your terminal environment that's allowing NetBeans to launch.
The next step that I would take would be to look at the package contents: examine /Applications/NetBeans/NetBeans 7.2.app/Contents/Info.plist for anything that seems amiss - this file is the information store that OS X looks for to see how to launch the package, what its icon is, etc... - in particular, I think you should look at the CFBundleExecutable value to see what command is used to launch the app. If it's not netbeans, you've found a big hint on what might be amiss: bundles are set up so that launchers should run bundle_dir.app/Contents/{platform}/{CFBundleExecutable_value}. Looking at CFBundleExecutable should show you if there's some other script used to launch the app than just running netbeans.
From this point, you'll have to do more digging, but hopefully this is enough information for you to get started tracking down how apps are launched from the OS X launcher. For more info and a better reference, check out this link, which is Apple's documentation for keys in Info.plist.
Finally, you should note that the launch information for all apps are heavily cached; I've heard that if you make a change to Info.plist, you have to rename the app bundle and name it back to have the changes picked up by the launcher.
Good luck!

Here's an idea: use Eclipse >=)
..but seriously, something got corrupted in Netbeans' metadata/cache data files. You cleared a couple of them but there may be others elsewhere.
Try comparing the launch command in your shortcut to what you're typing in the console. Are they the same?

To find the root cause, I would check the NetBeans logs, as detailed here
/Users/yourname/Library/Application Support/NetBeans/7.2/var/log/messages.log
And if that doesn't help, I'd archive your project(s) and put a clean install of NetBeans on your machine, and then import the archived project(s) back into NetBeans.