Develop Reference

Android resource linking failed-imageview

I try to display images from api, using glide library but I do get error in activity_main.xml, more precise in ImageView. I have done things like clean project, rebuild project, Invalidate and restart etc but the error is still there. Any suggestions?

Note the line
app:layout_conta.....#id/coinSymbol
and
android:id=...
You are trying to constrain your layout with itself, which is causing the error. Please remove the first line and it should work.

Looks like you set the constraint of the imageview to itself (using the same id) in line:
app:layout_constraintTop_toBottomOf="#id/coinSymbol"
this can and will cause the resource linking error.

setContentView() does not see all of the layouts in my R.layout folder

Within one of my methods, I want to switch layouts into a secondary one. But for some reason, the setContentView can't see the layout in the folder. The following images show this:
My layout folder
I then ran the code
setContentView(R.layout.saveg_w_name) //I know this name is correctly spelled and everything since I clicked the createLayout
And yet it still gives the cannot resolve symbol error. Is this a bug with android studio or am I doing something wrong

Just restart your android studio and again check.
If it still doesn't solve your issue, try invalidating caches.
click File(Menu)->Invalidate Caches/Restart

Why can't the #+id show when trying findViewById?

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 .

R.layout shows only Android default template proposals.

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

Layout file and r.java

Is it possible to convert R.java into layout file xxx.xml..
In some project which I got from internet the layout file is missing and all I have now is R.java.
So is there any way that I can create/extract information from R.java file to make the layout xml file.

That is not possible. the R class only handles references to content (like layouts), not the content itself.

R.Java is the pretty much the only file that you don't need. This file is automatically generated when your project is compiled.
Because of this, you should not edit this file in any way.
Therefore, if all you have is the R.java file... Well, you have nothing.

you can't do that, if R.java deleted your only way is add the xml again. i think create layout programmatically in android better than with xml. because the R doesn't need to generate. but the weakness of programmatical layout is you must declare id by your self. generate or manual which one do you like :)