Hi i am working with Gestures and i need to import but i m getting error
com.android.internal.R;
The import com.android.internal.R cannot be resolved
kindly help me , please
You don't say why you need access to com.android.internal.R, but the sad fact is that you simply cannot import it (the "internal" is a clue that it's not part of the public API). Google doesn't expose this because it is subject to change.
It is possible to get to the internal resources by calling Resources.getSystem(). To get the value of a particular resource identifier, you have to know its name and then use code like the following to find the value:
Resources res = Resources.getSystem();
int id = res.getIdentifier("resource name", "resource type", "android");
Be aware that any name that you use could disappear in future versions of Android.
I have a couple suggestions:
1) Make sure you don't have any other errors other than the R-related errors. Right-click your project folder in Eclipse, Android Tools -> Fix Project Properties.
2) Check to make sure you have the correct R imported. Sometimes the default Android.R can be imported.
Yes you can use the internal R with some dirty trick (dirty trick = Java reflection).
Just an example:
Class clasz = Class.forName("com.android.internal.R$styleable")
Field field = clasz.getDeclaredField("TextAppearance");
field.setAccessible(true);
int[] textAppearanceStyleArr = (int[])field.get(null);
field = clasz.getDeclaredField("TextAppearance_textSize");
field.setAccessible(true);
int textSizeStyle = (Integer)field.get(null);
First of all, what is Gestures ?
Do you have a package named com.android.internal in your gen folder ? Doest it contain R.java ?
If not, try Project->Clean in Eclipse. If it still doesn't work, you may have an error in your XML layout files.
Related
I keep getting this error. Should I just make id a field?
My code is:
public void onCreate(Bundle icicle)
{
super.onCreate(icicle);
setContentView(R.layout.main);
ImageView mainimage = (ImageView) findViewById(R.id.mainanim);
mainimage.setBackgroundResource(R.anim.mainanim);
mainanimation = (AnimationDrawable) mainimage.getBackground();
}
How exactly do you fix this?
Look at your import statements at the top. If you are saying import android.R, then there that is a problem. It might not be the only one as these 'R' errors can be tricky, but it would definitely definitely at least part of the problem.
If that doesn't fix it, make sure your eclipse plugin(ADT) and your android SDK are fully up to date, remove the project from the emulator/phone by manually deleting it from the OS, and clean the project (Launch Eclipse->Project->Clean...). Sounds silly to make sure your stuff is fully up to date, but the earlier versions of the ADT and SDK has a lot of annoying bugs related to the R files that have since been cleared up.
Just FYI, the stuff that shows up in the R class is generated from the stuff in your project res (aka resources) folder. The R class allows you to reference a resource (such as an image or a string) without having to do file operations all over the place. It does other stuff too, but that's for another answer. Android OS uses a similar scheme - it has a resources folder and the class android.R is the way to access stuff in the android resources folder. The problem arises when in a single class you are using both your own resources, and standard android resources. Normally you can say import at the top, and then reference a class just using the last bit of the name (for example, import java.util.List allows you to just write List in your class and the compiler knows you mean java.util.List). When you need to use two classes that are named the same thing, as is the case with the auto-generated R class, then you can import one of them and you have to fully qualify the other one whenever you want to mean it. Typically I import the R file for my project, and then just say android.R.whatever when I want an android resource.
Also, to reiterate Andy, don't modify the R file automatically. That's not how it's meant to be used.
Do not modify the R class. The error means there's something syntactically wrong with your XML layouts and R cannot be auto-generated. Try looking there and post the xml code you're not sure about, if any.
Edit : also: remove "import android.R" from imports at top of file (if there)
One possible solution:-
Summary: make sure you are using import com.yourpkgdomainname.yourpkgappname.R instead of import android.R
Details: The problem occured when I changed ID of a label which was being referred in other places in the layout XML file. Due to this error, the R file stopped generating at first. Eclipse is bad in handling errors with the layout files.
When I corrected the ID reference (with project clean few times and Eclipse restarts, I noticed that my import packages now has:
import android.R
Changing it to following fixed the error:
import com.example.app.R
I just fixed my problem right-clicking in the layout folder and clicking in the option Validate. Some windows will appear, you just clik OK and ist fine.
May be you created a new xml file in Layout Directory that file name containing a Capital Letter which is not allowed in xml file under Layout Directory.
Hope this help.
Just throwing this out there, but try retyping things manually. There's a chance that your quotation marks are the "wrong" ones as there's a similar unicode character which looks similar but is NOT a quotation mark.
If you copy/pasted the code snippits off a website, that might be your problem.
As Jake has mentioned, the problem might be because of copy/paste code.
Check the main.xml under res/layout. If there is no id field in that then you have a problem.
A typical example would be as below
<com.androidplot.xy.XYPlot
android:id="#+id/mySimpleXYPlot"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_marginTop="10px"
android:layout_marginLeft="20px"
android:layout_marginRight="20px"
title="A Simple Example"
/>
Some times eclipse may confuse with other projects in the same directory.
Just change package name (don't forget to change in Android manifest file also), ensure the package name is not used already in the directory. It may work.
Just came across this myself.
Finally found my issue was with a .png file that I added that had a capital letter in it an caused exactly the same problem. Eclipse never flagged the file until I closed it and opened Eclipse back up.
What seems to be the problem, I just fixed mine in case anyone was wondering - Due to other errors i turned off build automatically, when i created a new project it said R.layout.main had an issue and needed to import R; So naturally as a novice, i did. Then i built manually and it had a problem with main. Try building your program as is, remove import R and it should be fine.
In main.xml (or wherever your item is defined) make sure that the ID for the R item is defined with #+id/... Here is an example with a button:
<Button android:text="B1" android:id="#+id/button_one"
android:layout_gravity="center_horizontal|center"
android:layout_height="fill_parent" android:layout_width="wrap_content" />
Each of these is important because:
# must precede the string
+ indicates it will create if not existing (whatever your item is)
I also had this error when I was working in a Java class once. My problem was simply that my xml file, with the references in it, was not saved. If you have both the xml file and java class open in tabs, check to make sure the xml file name in the tab doesn't have a * by it.
Hope this helps.
Just Clean your project so R will be generated automatically. This worked for me.
It gave me enough pain but I found the solution:
PROJECT ---> Clean ----> (Sele)
I had this problem but in my case it solved by restarting the eclipse.
For me the cause of the problem was that I had 2 images with the same name in my drawable-hdpi folder. Once I resolved that, then the R.java rebuilt itself and the problem was automatically solved.
select Project tab and click Build automatically so Build all option will be activated and then click on build all.and always start xml file name with lowercase.
Before I could type R.id.exit now I have to type com.ramos.science.R.id.exit why?
Check your imports, be sure that com.ramos.science.R is listed there.
R will conflict with the R class from any other package. For example, if you needed to reference some android.R.id... then Eclipse may have automatically imported android.R so you could just reference it as R, but that would mean that any other R would need to be fully qualified as com.ramos.science.R.id....
My recommendation, and a good convention to adopt, is to use the fully qualified R for other packages and simply R for yours. So if you ever need an Android one, always do android.R..., and then just import your package so you can use simply R.
TLDR: check your imports for other R classes. If there's any that aren't your package, delete them and add yours. For other packages use the fully qualified name, e.g. android.R.id...
EDIT
The Android Lint tool even has a check for this:
Checks for 'import android.R' statements, which are usually accidental
Importing android.R is usually not intentional; it sometimes happens
when you use an IDE and ask it to automatically add imports at a time
when your project's R class it not present. Once the import is there
you might get a lot of "confusing" error messages because of course
the fields available on android.R are not the ones you'd expect from
just looking at your own R class.
Over the course of programming I get errors that give a resource number like "0x7f040000" (or sometimes in decimal form) My question is simple: Is there an easy way to tell what resource that is in eclipse?
i know i could manually identify every resource and print them out, but then every time i make a change to the program i'd have to update this code. Is there some way to search by resource ID?
YOu look up the R class in the gen folder
for example
public final class R {
public static final class attr {
}
public static final class drawable {
public static final int block=0x7f020000;
block is part or the drawables in the R file.
if you want to do this at runtime (and not just in the IDE of eclispe you can try
getResources().getResourceName(id);
you can use getResources() for that:
getResources().getResourceName( theID )
In your project structure, you should have a directory called gen. Browse that directory until you find the class R. There you find every resource of your project defined.
Another possibility is to go directly to the R class: Press ctrl + shift + T and in the popup you just type R. But be careful: There are at least two R classes listed there. One is from Android itself (package android.R) and your with the package name you have chosen.
Look at your R class and see what variable corresponds to that resource id. Right click -> Go To Definition.
How do I fix this? I already tried removing the R.java and cleaning the project via eclipse, but it doesn't help.
FYI I am trying to get PhotoStream from here: http://code.google.com/p/apps-for-android/, but so far it has been very difficult to get things work.
Okay..... 5 mins later google tells me the correct answer...
http://www.fairtec.at/en/it-blog-mainmenu-16/168-the-type-r-is-already-defined
I just didnt search hard enough.
"The type R is already defined"
That's the message you get in Eclipse if you try to build the Funambol Android Sync Client.
Reason is that you have checked two Builders that try to generate the same class.
You just have to uncheck the Java-Builder from Project->Properties->Builders.
Then the application even works fine in the Emulator.
Delete the R.java from the src folder and rebuild the project. This file will be automatically rebuit during this process.
http://www.fairtec.at/en/it-blog-mainmenu-16/168-the-type-r-is-already-defined
click right to project click properties
Project->Properties->Builders.
unckeck java Builder
delete file R.java
You may want to change your package names. It looks like you are using a 'PhotoStream'.jar which has it's R.class defined at the same package structure as you.
Here is a link to the R.java from the project on Google Code. Notice you are using the same package:
http://code.google.com/p/apps-for-android/source/browse/trunk/Photostream/src/com/google/android/photostream/R.java?r=83
I had the same issue when I imported a project from work. Turning off the Java builder as suggested in the article you found fixed my problem, but when I made code updates they were not reflected in the running app. In my case there was an R.java in my source which I deleted and that fixed my problem.
In my case,
as i m not using any IDE for programming but using command line Android..
i had two xml files, one in layout and other in layout-land. i was using same id "XXX" for both but while declaring i made small mistake
android:id="#+id/XXX" (in layout xml)
android:id="#+id/XXX " (in layout-land xml)
please observe extra space in second id declaration, so while creating R.java they were different and in R.java i had
public static final int XXX=0x7f040046;
public static final int XXX =0x7f040045;
which are same, so please be aware of extra spaces. Thank you
I keep getting this error. Should I just make id a field?
My code is:
public void onCreate(Bundle icicle)
{
super.onCreate(icicle);
setContentView(R.layout.main);
ImageView mainimage = (ImageView) findViewById(R.id.mainanim);
mainimage.setBackgroundResource(R.anim.mainanim);
mainanimation = (AnimationDrawable) mainimage.getBackground();
}
How exactly do you fix this?
Look at your import statements at the top. If you are saying import android.R, then there that is a problem. It might not be the only one as these 'R' errors can be tricky, but it would definitely definitely at least part of the problem.
If that doesn't fix it, make sure your eclipse plugin(ADT) and your android SDK are fully up to date, remove the project from the emulator/phone by manually deleting it from the OS, and clean the project (Launch Eclipse->Project->Clean...). Sounds silly to make sure your stuff is fully up to date, but the earlier versions of the ADT and SDK has a lot of annoying bugs related to the R files that have since been cleared up.
Just FYI, the stuff that shows up in the R class is generated from the stuff in your project res (aka resources) folder. The R class allows you to reference a resource (such as an image or a string) without having to do file operations all over the place. It does other stuff too, but that's for another answer. Android OS uses a similar scheme - it has a resources folder and the class android.R is the way to access stuff in the android resources folder. The problem arises when in a single class you are using both your own resources, and standard android resources. Normally you can say import at the top, and then reference a class just using the last bit of the name (for example, import java.util.List allows you to just write List in your class and the compiler knows you mean java.util.List). When you need to use two classes that are named the same thing, as is the case with the auto-generated R class, then you can import one of them and you have to fully qualify the other one whenever you want to mean it. Typically I import the R file for my project, and then just say android.R.whatever when I want an android resource.
Also, to reiterate Andy, don't modify the R file automatically. That's not how it's meant to be used.
Do not modify the R class. The error means there's something syntactically wrong with your XML layouts and R cannot be auto-generated. Try looking there and post the xml code you're not sure about, if any.
Edit : also: remove "import android.R" from imports at top of file (if there)
One possible solution:-
Summary: make sure you are using import com.yourpkgdomainname.yourpkgappname.R instead of import android.R
Details: The problem occured when I changed ID of a label which was being referred in other places in the layout XML file. Due to this error, the R file stopped generating at first. Eclipse is bad in handling errors with the layout files.
When I corrected the ID reference (with project clean few times and Eclipse restarts, I noticed that my import packages now has:
import android.R
Changing it to following fixed the error:
import com.example.app.R
I just fixed my problem right-clicking in the layout folder and clicking in the option Validate. Some windows will appear, you just clik OK and ist fine.
May be you created a new xml file in Layout Directory that file name containing a Capital Letter which is not allowed in xml file under Layout Directory.
Hope this help.
Just throwing this out there, but try retyping things manually. There's a chance that your quotation marks are the "wrong" ones as there's a similar unicode character which looks similar but is NOT a quotation mark.
If you copy/pasted the code snippits off a website, that might be your problem.
As Jake has mentioned, the problem might be because of copy/paste code.
Check the main.xml under res/layout. If there is no id field in that then you have a problem.
A typical example would be as below
<com.androidplot.xy.XYPlot
android:id="#+id/mySimpleXYPlot"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_marginTop="10px"
android:layout_marginLeft="20px"
android:layout_marginRight="20px"
title="A Simple Example"
/>
Some times eclipse may confuse with other projects in the same directory.
Just change package name (don't forget to change in Android manifest file also), ensure the package name is not used already in the directory. It may work.
Just came across this myself.
Finally found my issue was with a .png file that I added that had a capital letter in it an caused exactly the same problem. Eclipse never flagged the file until I closed it and opened Eclipse back up.
What seems to be the problem, I just fixed mine in case anyone was wondering - Due to other errors i turned off build automatically, when i created a new project it said R.layout.main had an issue and needed to import R; So naturally as a novice, i did. Then i built manually and it had a problem with main. Try building your program as is, remove import R and it should be fine.
In main.xml (or wherever your item is defined) make sure that the ID for the R item is defined with #+id/... Here is an example with a button:
<Button android:text="B1" android:id="#+id/button_one"
android:layout_gravity="center_horizontal|center"
android:layout_height="fill_parent" android:layout_width="wrap_content" />
Each of these is important because:
# must precede the string
+ indicates it will create if not existing (whatever your item is)
I also had this error when I was working in a Java class once. My problem was simply that my xml file, with the references in it, was not saved. If you have both the xml file and java class open in tabs, check to make sure the xml file name in the tab doesn't have a * by it.
Hope this helps.
Just Clean your project so R will be generated automatically. This worked for me.
It gave me enough pain but I found the solution:
PROJECT ---> Clean ----> (Sele)
I had this problem but in my case it solved by restarting the eclipse.
For me the cause of the problem was that I had 2 images with the same name in my drawable-hdpi folder. Once I resolved that, then the R.java rebuilt itself and the problem was automatically solved.
select Project tab and click Build automatically so Build all option will be activated and then click on build all.and always start xml file name with lowercase.