I have a couple of xml files in my layout folder but when I use them in my class the template proposals doesn't show my layout files but shows android default proposals. There seem to be no error in any of my files at all. I tried deleting the R.java file and rebuilding and restarting eclipse but nothing seems to be working. PLease help. I need to get this done asap :(
Thanks,
Sowmya.
This may be because, when you try to use your xml layouts, the default android R file is imported.
import com.android.R
Check that. If it is there, delete that import and import the correct R file which starts with your package name.
First look are you setting xml name fine like
e.g
you have your.xml
Then in onCreate
super.onCreate(savedInstanceState);
setContentView(R.layout.your);
Then clean your project.
if you have design multiple xml with same name then you must have to place them in appropriate folder using hdpi etc
Further details available here
or you can write
import.R.layout
It will work for sure
Related
I am a beginner in android and I am learning it by watching tutorials on YouTube. I completed all the initial steps for building up an android project but I am unable to find out any main.xml file or activity_main.xml file under res/layout folder. In fact, the layout folder is not even showing any drop down menu. I googled my doubts but I am unable to find any satisfactory answer. Can someone please tell me what exactly went wrong ?
Add your own activity_main.xml file to the layout folder. Right click layout -> New -> Android XML File -> Name the file activity_main and click Finish.
At least if you have the MainActivy.class file, (the launcher activity), the ide, wheater android studio or eclipse should show you if the you layout activity exist by underlining the parameters for the 'setcontentlayout()' function if it doesnt exist. The 'setoptionsmenu()' function also do the same. if they are there, your MainActivity.class should be free from errors otherwise create them and insert them.
http://i.imgur.com/x0Cbzv5.png
I'm not sure why the 'totalPlus' id won't show up.
I've fixed the mismatch naming problem that the picture shows. Still no luck.
Have you tried cleaning the project or even restarting Eclipse itself?
Also, there may be some other problems/errors in your res folder that can affect the proper R.java auto-generation.
If those do not work, try to insert your textviews via the Graphical Layout and then rename them by right-clicking on them and select "Edit ID". This should do a proper re-factoring.
You can also take a look at the official Layout guide here .
I put an image in my res/drawable folder, but when I clean and build my project, I receive the error message R cannot be resolved. I don't understand why this happens, what should I do?
Check out the following link:
http://source.android.com/source/using-eclipse.html
Note: Eclipse sometimes likes to add an "import android.R" statement at the top of your files that use resources, especially when you ask eclipse to sort or otherwise manage imports. This will cause your make to break. Look out for these erroneous import statements and delete them.
After removing the erroneous imports, delete your R.java file and try to clean and build the project again. If the problem still persists, post here.
possible causes:
duplicate file names (across all drawables folders) . for example , is there a file named "h1.png" and also "h1.jpg" ?
bad files names . only letters allowed are lowercase english ones , and digits.
hidden files , like those of the OS . on windows , it's probably "Thumb.db" . either delete them , or delete & disable them. linux and mac also have such files , but with different names and usually start with "." .
Make sure your image name is in small latters and in res/drawable folder.for how we add drawables in our project and supported images formats see docs Drawable Resources
Might be you are using android.R.drawable.your_image
Remove android.R from imports. use R.drawable.your_image
For Android Studio:
Right click on res, new Image Asset
On Asset type choose Action Bar and Tab Icons
Choose the image path
Give your image a name in Resource name
Next->Finish
The image will be saved in the /res/drawable folder!
Is there a way to easily rename XML files in Eclipse while developing for Android so that these changes are reflected in source code?
Right-clicking on the file in package view and selecting refactor->rename changes the file's name, but does not alter references to the file within the .java source files.
I realise this is an old post, but i was trying to do the same and just came up with a solution to this in eclipse:
Search -> File Search -> Replace...
Replace:Current.Style.Name
With: New.Style.Name
Thats it! Nice and easy, i didn't want to deal with the hassle of going into all my xml layouts and changing them.
I do not think such a thing exists for Android resources directory let alone layouts. You have to change the references manually.
Hopefully, this is a newbie question with a quick answer...
I am attempting to add a simple preferences file in a new Android project (New -> Android XML File), but it doesn't appear to be working correctly.
There is no root element to choose from when I select the Preference type layout. If I press Finish, it doesn't do anything. See screenshot below.
Thanks,
wTs
Just create a normal xml file to the project /res/xml/ folder and add your content to the file as usual. Should work just great. Eclipse detects it as a preference file once you have added the preference-xml and saved it.
You don't need to have a root element in the selection screen. Just replace whatever eclipse generates with what you want.
try refreshing the folder that the file is supposed to be in (in your example res/xml).