How can I change the entire package path in Android Studio, so that also the import statements within Java classes and xml files will be changed automatically.
I know there are threads already posted about this topic, but whenever I change package path, I have to adapt all import statements by hand. And it's much work when there are over 100 classes :(
If you want to move your Java classes to different package, in Android Studio you can right click on package name and then select Refactor->Move.
I have downloaded the CustomView.zip from developer android page.
I've tried to import this into Android Studio 2.2.0.12. But I am NOT able to do it.
I have also tried to create a empty project in order to import only the sources and XML. It does´t work either, I get a lot of duplicates XML definitions and even after resolving the duplicates the App crashes with some inflate exception.
So, i´m wondering, How can I import this into Android Studio in order to have a working project and run it to see the behavior and also to debug it
Thanks in advance.
Looking at the sample file, stupidly, it doesnt include any of the standard android framework files (gradle, manifest etc), so Android Studio will not be able to automatically import it.
To get round this you should create a new blank project, leave the mainactivity that is generated.
Then go in to the file structure of the new project and copy in the files from the sample in to the corresponding files. Make sure you overwrite the files in the new project.
Then go in to the code base in Android Studio and delete any imports that cant be found due to incorrect package names. Re import these (alt + enter on mac) with the correct package names and then build and you should be good to go.
I downloaded an Android Project and got some errors.
How can I use this imports in Android?
import com.android.internal.telephony.IccSmsInterfaceManager;
import com.android.internal.telephony.Phone;
import com.android.internal.telephony.PhoneFactory;
import com.android.internal.telephony.SMSDispatcher;
When I import this, I got errors like these:
The import com.android.internal.telephony cannot be resolved
The import com.android.internal.telephony cannot be resolved
The import com.android.internal.telephony cannot be resolved
The import com.android.internal.telephony cannot be resolved
Later in the code there are:
Phone phone = PhoneFactory.getDefaultPhone();
With the error:
Multiple markers at this line
- Phone cannot be resolved to a type
- PhoneFactory cannot be resolved
And so on...
I tried to fix it with the https://stackoverflow.com/a/16377968/3203914
but I did not work for me.
Can please someone tell me how to fix it?
Thanks!
How can I use this imports in Android?
Those are not part of the Android SDK. If you are editing the Android source code, the build process for it should resolve those imports. If you are trying to write an Android app, you cannot directly reference them. In fact, com.android suggests they are part of a separate app, not yours and not the Android framework.
CommonsWare is correct, its not in the SDK so you cannot directly reference them. You will either have to
Import all of the android source code, which will resolve these issues
Import the specific project containing this code, then set up your code as a dependency
Stop using those packages
We are new to Android and we are trying to develop a new application. We installed all the basic setup of Android. We tried to run the Android Sample projects in Eclipse. But while to compile the following lines and a few other lines that uses the variable 'R' throws up an error.
setContentView(R.layout.activity_main);
'R cannot be resolved to a variable'. I do not understand what is causing the error. Anyone help me out in this issue.
check that the import for R class is not
import com.android.R;
and you should make it
import yourpackagename.R;
then recompile
Please try to clean the project, and try compiling again.
If not solved, refer to R cannot be resolved - Android error
If you have 64 bit Linux platform without ia32 libraries, then this problem could also occur. It took me quite some time to pin this one down, seeing that the problem is not clearly linked with the inability to execute 32 bit code.
Just make the import part import com.android.R.layout instead of com.android.R
In my case i forgot to re-install the SDK. When you re-install your operating system, you should re-extract (re-install) your SDK Zip file.
Also check that you have your android libraries mapped correctly in the settings for Eclipse (if you are using eclipse to develop).
Check if your resorce name (for example template.xml) has ONLY small caps letters.
import com.packagename.R* will worl
Change import to
import yourpackagename.R;
If error is still there then
go to gen folder->packagename->R.java
and remove error line some times it gave error on drawable files.
setContentView(R.layout.activity_main)
Change the SDK and delete the project and create new ... it will definitely work!
i was using Eclipse Helios but due to performance issues i changed to Eclipse Galileo and installed the ADT plugging, and added my sdk folder to Elcipse Preferences. Now R.java disappeared from all of my projects. How can i fix this, i did Project/Clean but that won't generate the files, there's nothing wrong in my xml and there's no out.xml in any of my projects.
Thanks in advance
In my experience there is a mistake in the xml somewhere. Eclipse will no doubt tell you where. After I fix the error R appears.
Sometimes when you clean your project the R file disappears, I had the same issue.
The way I fixed it was:
-Make sure all the "import android.R" was removed
-Clean again (if this doesn't fix it, restart eclipse and try again)
Or
-Put the pointers to R file in comment f.e. // setContentView(R.layout.main);
-If all the pointers to R file are in comment, you should get only warnings in the file, and hopefully errors somewhere else.
-Fix the errors and then uncomment the pointers. Sometimes eclipse ignores some errors and drops the R file and then says nothing about it, which is annoying, but this will fix it. :)
-If this still doesn't work, you can try create a new project and copy paste your code in it.
I had this same issue today and figured it out. The reason this happens so often when including external/example files is because often times these examples reference layouts in your application, but do not have access to the package and therefore cannot see the R.java file in that package. to make things clear, here's the beginning of the R.java file:
/* AUTO-GENERATED FILE. DO NOT MODIFY.
*
* This class was automatically generated by the
* aapt tool from the resource data it found. It
* should not be modified by hand.
*/
package com.conceptualsystems.dashboard;
public final class R {
public static final class attr {
}
public static final class drawable {
public static final int csc_logo=0x7f020000;
public static final int icon=0x7f020001;
}
public static final class id {
public static final int activation_code=0x7f070012;
public static final int alpha_bar=0x7f07000b;
public static final int alpha_label=0x7f07000a;
notice the package name is whatever the package name of your application is. .java files that are not included in this package (ie, your example code you just dropped in) will need to explicitly reference that package file like this:
package com.example.android.apis.graphics;
import android.app.Dialog;
import android.content.Context;
import android.graphics.*;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.SeekBar;
import com.conceptualsystems.dashboard.R;
the last line is the one to pay attention to. after importing the resources explicitly, the resources will be available in your example code.
created new project in eclipse, then I imported the sample files into it, yet still same error. You might want to try the following:
In Eclipse -> Right Click on Project -> Android Tools -> Fix Project
made sure that all resources are lowercase.
Try unclicking and re-clicking build project automatically in the project dropdown, closing the program each time. There have been know bugs about this for a while but there's not always a set fix.
When it once happened to me it turned out it was because i'd named an .xml file with a capital letter. Worth checking.
I had this problem when upgrading from Eclipse/Helios to Eclipse/Juno.
I set up the IDE and then imported an existing (working) project. If I then ran it in the emulator it ran but in its original version although the java code was for the latest version.
I then did a Clean (as explained in many other posts) and a (re) build but then ended up with host of errors due toSmissing R.java file.
The problem turned out to be some 'errors' in the layout xml files which had not been recognised by Eclipse/Helios. Specifically, in my case, there were some layout_width='match-parent' (and height) settings which Juno objected to. I tried changing those directly in the xml files but Juno wasn't having it and still reported it as a 'match-parent' error (although it had clearly been changed).
The only thing to do was to go to the graphical layout, right-click to get Properties and then change the Width and Height properties there. Also, as they were already showing as 'fill-parent', I had to first change them to 'wrap-content' and then change them back to 'fill-parent'.
Once I'd done that for all instances of 'match-parent' I could then do a build and run the latest version in the emulator.
There are mistakes in res. Once I have the same xml files in layout and menu, generate failed, no R.java generated.
Localize the correct R. package import, should be in your packages.
ex. import com.yourdomain.test.R;
This is where ADT Android project is a bit different from a normal Java project. An android project requires a constantly updated persistent R.java file. Among other things, the R.java file has all the resources IDs provided in your App and maintains interface's consistency.
So first make sure R.java file is being generated for your android project.
To find that out first go to the top of ADT (Eclipse) and clean the project PROJECT->CLEAN
If the 'Build Automatically' is checked the R.java file should be created now.
To confirm, you can simply search the file in the project folder. You won't find it if its not being created.
If R.java is not being created, there is 90% chance that there is some issue with one of your interface *.xml files. Which usually resides in res->layout->activityXXXX.xml
Fix the interface file/s (try making it very simple with a single button or something) and R.java file will be generated by ADT automatically. At this point you should start noticing R.layout.XXXX not found type errors in your main program/activities. Which is a good thing, because now you can create/rename correct layout items and fix your project.
Just my 2 cents....
same happened to me, corrected checking any errors in res xml files, and changing target 1.5 to 2.2 android (on my case)
this usually happens to me when importing external code or online source code from examples or other developers.
Hi I had this happen to me this weekend.
The actual reason this had happened was that I had unchecked the update option for Android in the preferences as it wasn't working with the previous version of Eclipse. Now although the eclipse was seeming to run fine, when I PROJECT->CLEAN the project the R.java was missing.
Try re-ticking the android update option (WINDOW -> PREFERENCES -> INSTALL/UPDATE).
This completely solved my issue and I did not have to both with any hassle of scanning each line of my many xml files or my image resources.
Hope this helps someone :)
I just Encountered the same problem.
Turned out my Source control had inserted an Addedd>>>>>>>>>>>>>>>> section to my mainifest file.
All I had to do was fix the manifest file and then all the errors disappeared.
This happened to me while adding some new resources to my project.
The R file is build after every resource update.
The error in my case was incorrect file name. One of the image resources had a capital case letter in its name and that prevented the build from creating the R file. Changing the name simply worked.
I would suggest that when you add too many resources at a time, just make sure of the naming conventions for them. Its easy to miss such things.
Resource conventions: http://developer.android.com/guide/topics/resources/providing-resources.html
I had the similar problem. That was because I saved a drawable file picture.jpg as picture.png, as soon as I changed the name to previous one it started working. hope this would help someone in future