Can I change the name of the main-Activity or not? - android

Does the name of Layout-Definition for view of the main-Activity always have to be main or can I change it?

Yes you can change the name of MainActivity class in android. But also change it's name in AndroidManifest.xml file.
You can also change the layout name from main.xml to *.xml. Whatever you want. It depends on how to name your files in a project.

Yes, you can change the name of MainActivity by, opening the directory of the java file in android studio, right-click on it and find refactor, then rename, put in the name you like then click on refactor.

you can change it as you want. by default it will be main.xml and you can change it in any way as you like.
also you change it activity setcontentview(R.layout.newname);

You can change it, but in both xml name and R.layout.* (setContentView)

Just use the refactor(shift+f6) so easily change the name. And check debugging if it did well.

Rename an Android Activity as follows:
Right-click the .java file and Refactor Rename.
then
verify the AndroidManifest.xml to make sure has the new name.

Related

Rename Package Android Studio

I know there is a lot of info on this here. But I can't find the answer to my particular question.
I'm trying to rename a package that is currently like this:
com.example.app.name
and I want to rename it to
com.example.name
I know you have to do refactor rename and make sure you have 'compact empty middle packages' turned off but I'm only know how to rename them when they are three directories long i.e. com.example.name and not how to actually get rid of one of the directories. So how do I reduce it from being 4 to only 3?
Hope I explained this correctly.
Refactor the package name in the manifest file. Make sure to hit the "Do Refactor" button in the Find window.
Also, you will need to edit the package name in the build.gradle file.
I think that's it.
Rename Package Android Studio com.example.app.name to com.example.name
Steps:
Close/Unselect Compact Empty Middle Packag.
Move all source from "name" to "app".
Delete "name".
Change "app" to "name". :D

Does anyone know the what's causing "Package name is not a valid package name" when adding a new layout?

I've receiving this error in every project I make, new or otherwise.
I've attempted reinstalling Android Studio fresh without any luck and I've also scoured the Internet for the exact error and nothing seems to be coming up.
Does anyone have an idea of what's causing this error when I add a new layout to my project?
Instead of adding the new activity by right clicking on the file labeled "layout", right click on the file labeled "res" to add a new activity and it should work fine.
As your screenshot shows,current package name is layout,but maybe you don't have a package named layout,so such error existed.
If you want to add a layout file to your project,you should right click layout folder under res folder,and create a layout file.
Hope this helps
Option 1:
Click the Project tab. From there you can see a dropdown. Click the dropdown and go to Packages and then you can see the layout folder. From there you can create another Blank Activity.
Option 2:
From the dropdown again go to Android. Click the java folder, you can see the package name com.example... Write it down on a paper. Then go to layout and create a blank activity. Change the package name to what you had just wrote down on the paper.
Hope it helps.
Just to add some details to what Infamous said.
You can copy the package name from another existing activity.
package com.mycompany.myself.myapplication;
I agree, I'm surprised that Android Studio is not able to default that with the right value, given during the project creation:
Project structure/app/Flavors/defaultConfig/Application Id
In Android Studio, in the java directory, select the package, for example com.mycompany.myfirstapp, right-click, and select New > Activity > Blank Activity.
1 - to find the right package name
go to (main activity) page .
2 - First line you will see this for example :
package alqahtani.dhafer.myapp;
copy this text alqahtani.dhafer.myapp
3 - go to layout --> right click --> new activity --> paste package name in layout name .
just "layout" cannot be a package name check other activities and try to take that packag name on top of the file
When adding a new activity to my application, it shows the following problem: Package name is not set to a valid package name, and does not allow adding the activity.
** Solution 1 : Instead of adding the new activity by right-clicking on the file named " layout ", right click on the " res **" file to add a new activity.
And no longer shows the problem: Package name is not set to a valid package name, this is because I could not find the package layout.
** Solution 2 **: In the field ** Package name **, put us as package ** layout ** delete it and put the full name of your application package. ** Example **:
com.mx.softmolina.example
http://blog.softmolina.com.mx/wp/2016/11/30/solucion-package-name-is-not-set-to-a-valid-package-name-agregar-nueva-actividad/
I hope it will be you useful.
Regards!! :)
Change the package name Layout to project package name.
After changing the Package name. It will allow to finish process.
OR
Copy project package name from any java class and paste in Package name section.
I was seeing the same error message (Package name is not a valid package name) when I was trying to add a new activity. The problem was that I was trying to add a new activity to the wrong place. I was trying to add the activity (new -> activity -> blank activity) in the res/layout directory. The solution was to add the activity in the java/your_app directory.
If you want to add a layout file to your project, follow below way -
app -> res -> New -> Acivity -> select activity which u want.
For me it was because I right-clicked on the Activity node in my project explorer. If I click on the "app" root node, this doesn't happen.
It's simply because you are trying to create new Activity / Layout file in a wrong package. To do so, You have to navigate to app >> java >> firstfolder.
Right Click on this first folder and go to NEW >> Activity >> EmptyActivity or AnyOtherTypeYouWant. Then enter the correct name for your Activity and you will face no errors.
As simple as that.

Sipdroid - Cannot change package name

I modify sipdroid for my voip app in android. Everything is ok but when i change package name "org.sipdroid.sipua", i cannot register for any server (rollback to name org.sipdroid.sipua and it work fine). Awww What wrong with this name???
i faced this situation and I have a solution which as follows
In this package name "org.sipdroid.sipua" right click on and select refactor =>Rename. And then go to manifest and edit this package name "org.sipdroid.sipua" as "XXX.YYYYY.ZZZ". Then the package name as changed as your wish. and one thing is it will affect all your other packages. you need to change based on your changed package name.
IT IS VERY SIMPLE,please change the package name in Settings.java. YES, that's it. I am success.
private final String sharedPrefsPath = "/data/data/org.sipdroid.sipua/shared_prefs/";
change to:
private final String sharedPrefsPath = "/data/data/org.yourpackage.sipua/shared_prefs/";
It has something to do with Preference Activity used in storing the settings. If you see the files which use Preference you will have to update them with the new package name.
well i did solve the problem of changing package name of sipdroid . and i am at success..
what you have to is . Change your package name in manifest file. and all other packages in src . with same as your package name in manifest file . after that also change path of shared prefs in settings.java file . after that you need also change the package name in sipdroid.xml and at last go to prefrences.xml there is also a reference given in this file for target package change it too .. after changing all packages there comes a time for jni file . the package which names like org.sipdroid.net.impl change it too it will effect osnetworksystem.cpp file change package names on methods with underscore . now everything will fix up . clean the project and run . it will connect to servers as well as package name also changed . cheers :-)

Safely remove an Android Activity

We all know how easily and safely to create a new Activity. Now I want to know how to remove an Activity from my project safely.
I've created some activity in my project and feel that they are now needless and I want to delete them. But if I delete manually these files:
The activity's XML file in the /layout folder
The activity's Java file in the /src folder
The <activity></activity> portion from the manifest file
Then,
Will no other data related that activity stays in my project? What are those?
Is there any simple removal procedure like creating an activity in Eclipse?
I found my answer. To remove an activity, let the name of the activity is activity:
Remove the activity.java file from src folder (java/your.package.name folder for AndroidStudio)
Remove the activity.xml file from layouts folder (layout folder for AndroidStudio)
Remove the activity.xml file from res/menu folder (this is an optional folder)
Remove the <activity></activity> block of the activity from the manifest file
If the <activity> block in the manifest file has a reference (usually in android:label tag) remove the referenced value (usually from values/strings.xml).
According to answers from #ojonugwa ochalifu and #Md Tarik Mahmud you should also right click on app folder then Refractor -> Remove Unused Resources
Just do it in a two steps in Android Studio.
Delete the Activity's Java file: YourActivity.java
Select app from the Project-Browser in Left Panel. Click Refactor from menu, click Remove Unused Resources.
You are done.
I don't think there is any procedure to delete an activity at once from everywhere.
Delete the entry from manifest first. Then delete the Activity class file. Once class file is deleted you will start getting errors where it is used. Look into each error separately and resolve them.
And the title string in res/values/xml/strings.xml
Just to make sure you have deleted everything after following #CoolBrain's answer, do:
Refractor -> Remove Unused Resources
This will remove residues of that activity you aren't sure you've deleted. Note however that this operation removes unused drawables, and views also
Right click on each of the file associated with the activity (in Android View), select refactor, then select safe delete. This will also tell you if there are any use (of that file) which makes it not safe to delete.
I found my answer. To remove an activity, let the name of the activity is activity:
Remove the activity.java file from src folder (java/your.package.name folder for AndroidStudio)
Remove the activity.xml file from layouts folder (layout folder for AndroidStudio)
Remove the activity.xml file from res/menu folder (this is an optional folder)
Remove the <activity></activity> block of the activity from the manifest file
If the <activity> block in the manifest file has a reference (usually in android:label tag) remove the referenced value (usually from values/strings.xml).
According to answers from #ojonugwa ochalifu and #Md Tarik Mahmud you should also right click on app folder then Refractor -> Remove Unused Resources
Thanks to #A. K. M. Tariqul Islam for answare.

How do I rename the android package name? [duplicate]

This question already has answers here:
Rename package in Android Studio
(55 answers)
Closed 5 years ago.
Pressing Shift+F6 seems only to rename the last directory.
For example, in the project com.example.test it will offer to rename test only. The same applies if I navigate to package name in .java or Manifest file and press Shift+F6.
So is there a way to rename the package?
You can do this:
Change the package name manually in the manifest file.
Click on your R.java class and the press F6 (Refactor->Move...). It will allow you to move the class to another package, and all references to that class will be updated.
The best way to solve this is going to the AndroidManifest.xml: package="com.foocomp.fooapp:
Set the cursor on "foocomp"
Press Shift+F6
Rename Package to whatever you want
Repeat for "fooapp".
Works for me.
Also, replace in Path in Whole Project as it didn't change everything. Then Clean, Rebuild and it works --> In Android Studio / IntelliJ you should unmark "Compact Empty Middle Packages"
Eclipse:
Right click on the project > Android tools > Rename application package.
As simple as that...
In Android Studio:
open the build.gradle file > rename the applicationId under defaultConfig > synchronize
Goto your AndroidManifest.xml.
place your cursor in the package name like shown below don't select it just place it.
Then press shift+F6 you will get a popup window as shown below select
Rename package.
Enter your new name and select Refactor.
(Note since my cursor is on "something" only something is renamed.)
That's it done.
I found another solution for renaming a package in the entire project:
Open a file in the package.
IntelliJ displays the breadcrumbs of the file, above the opened file.
On the package you want renamed: Right click > Refactor > Rename.
This renames the package/directory throughout the entire project.
Deselect Hide Empty Middle Packages in Project Explorer Windows settings menu than you will be able to refactor each directory
Lets address the two use cases
**Rename a package name or Trim a package **
com.mycompany.mystupidapplicationname to com.mycompany.brandname
or
com.someothercompany.mystupidapplicationname to com.someothercompany.mystupidapplicationname
or
com.someothercompany.mystupidapplicationname to
someothercompany.brandname
Select Package in the drop down in Android Studio
Right click on the package which contains your MainActivity and refractor it
Select Rename Package and everything will work like a charm
But this will only rename the last part of package name
To rename the first or second part of package name . Create a new dummy file in the part of package which you want to rename. the file will be created inside mycompany.com.myapplicationame. Then move the file inside mycompany(right click => move) to make mycompany appear in tree view. This will make that part part of the tree view and will you help you to do a right click and rename that part.
Delete the dummy file
To Trim a package , simply right click and move the package part inside its grand parent
I found a good work around for this problem. Taking the example mentioned in the question, following are the steps for changing the package name from com.example.test to com.example2.test :
create a temporary directory, say temp inside the directory example (alongside directory test).
Go back to the Intellij project, select the folder com.example and Click Shift + F6. Now it offers to rename the text example. Here you can enter the new text you want and IntelliJ will do the rest for you.
Delete the temporary directory temp from the file system.
This idea can be used to refactor any part of the package name.
Good luck!!
This modification needs three steps :
Change the package name in the manifest
Refactor the name of your package with right click -> refactor -> rename in the tree view, then Android studio will display a window, select "rename package"
Change manually the application Id in the build.gradle file :
android / defaultconfig / application ID
Then clean / rebuild the project
Unfortunately all above didn't work for me. After having lots of trials,
What worked for me in Android Studio:
do a 'move' on the package to a new package name you want.(right
click on package and select Refactor -> Move)
If Refactor -> Move didn't work for you, then create a package with the name you want and move manually in the existing package to the new one, and then delete the old empty package.
Change package name in manifest (manually)
Have a replace for the old package name with the new package name
globally (in the full path by going to Edit -> Find -> Replace In
Path)
What I did was the following :
I simply created the package with the desired name , in the src folder , next to the current package with current name.
I dragged all contents of current package to new package , intellij popped a dialog box asking me if I want to refactor inside package references and project references to new package , I clicked 'yes' and TA-DAAA , worked like a charm.
In Android Studio 1.1, the simplest way is to open your project manifest file, then point to each part of the package name that you want to change it and press
SHIFT + F6 , then choose rename package and write the new name in the dialog box. That's all.
Most of the answers even the most voted answers didn't do the job properly, they seem to work and the builds work however, a closer look at the file structure and references will show you that not much was done. IntelliJ actually does this whole process automatically.
1) Go to Project Tab and make sure Packages is the active Tab in the drop down like so:
find your com.example package (note test as in com.example.test is not there) right-click and choose Refactor->Rename...
It will issue a warning that multiple directories... (which is actually the desired effect), click on Rename package.
Input the new package name and Refactor...
It will do searches and show you refactoring results.
Click on the Do Refactor button and it will do everything and even rename the folders and files involved... every reference is corrected to this new name.
2) Then Finally change the AndroidManifest.xml file
:)
Most of the answers even the most voted answers didn't do the job properly, they seem to work and the builds work however, a closer look at the file structure and references will show you that not much was done. IntelliJ actually does this whole process automatically.
I solved this issue by changing the directory name manually from the command line. Intellij then recognized the new package name automatically. I then had to do a search and replace for the package name in each file that imported it. This seems like an ugly workaround, but Intellij seemed unwilling to change the package name otherwise.
What I did was the following
Change manifest.
Close androidStudio
Open folder with Windows Explorer. Change folder names.
Open androidStudio, and do a search and replace.
Done!
If you want to rename full android package, this is the best way to do that:
Mark as checked - Comapct Emty Middle Packages
Right click on the packcage you want to change, and then
Refactor->Rename->Rename all
You can find video tutorial on this link:
https://www.youtube.com/watch?v=A-rITYZQj0A
In addition to #Cristian's answer above, I had to do two more steps to get it working correctly. I will sum all of it here:
Change the package name manually in the manifest file.
Click on your R.java class and the press F6 (Refactor->Move...). It will allow you to move the class to another package, and all references to that class will be updated.
Change manually the application Id in the build.gradle file : android / defaultconfig / application ID [source].
Create a new package with the desired name by right clicking on the java folder -> new -> package and select and drag all your classes to the new package. Android Studio will refactor the package name everywhere [source].
Solution 1: I changed src subfolder names, manifest file, activity headers and run/debug configuration. And still got building errors. If your project is not so big, just create a new project, copy-paste old files and change package names in headers of .java files and android manifest.
Solution 2: Inside IntelliJ 12, goto someFile.java and find your old package name
package com.myself.project2
click to which word that you want to change. Press Shift+F6.
Dialog comes, type new name.
Then goto Run/Edit configurations. Inside Launch radio button change package name to new one. It should work.
Other renaming options of IntelliJ are: http://www.jetbrains.com/idea/webhelp/rename-refactorings.html
Super simple approach:
Find R.java in the build/generated directory
Create new package directories, again under build/generated/etc
Move R.java to the newly created package.
A dialog will appear. Choose to refactor the existing code with the new package name.
Clean and Rebuild
Done!

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