r.java-file

问题 I just start using Android Studio for a week and it works great for me, but when I started Android Studio today I get the error: 'error: duplicate class: mypackage.R'. I saw this error before when I used Eclipse so I tried to rebuild the project a few times and restarting Android Studio, this didn't help. After reading some Stackoverflow questions I tried to deleted R.java and rebuild again, now I don't get any error while rebuilding. The only problem is that Android Studio cannot resolve R,

问题 I am using ubuntu 14.04 LTS 64 bits. and i installed eclipse Mars. and created "hello world" App. but the R class is always missing and never generated. @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main);//R cannot be resolved to a variable } and i did the folowing: -clean project. -delete the files in gen folder to be regenerated automatically -checked the XML files in your resource folders and all has no

问题 I'm seeing a crash on an older device that works on multiple newer devices: android.content.res.Resources$NotFoundException: Resource ID #0x7f030035 If I recall correctly you could look at the R.java to see the culprit, however in Android Studio it doesn't seem to exist. Where is the R.java so I can correlate that ID? Thanks. 回答1: In Android Studio 1.1.0 the R.java file is under Project/app/build/generated/source/r/debug/com.android.'projectname'/R.java If you don't see the above collection

问题 I have imported my eclipse project to android studio.I googled but not getting right answer. These errors are occurred- D:\***\app\src\main\res\values\strings.xml Error:Error: ':' is not a valid resource name character :app:mergeDebugResources FAILED Error:Execution failed for task ':app:mergeDebugResources'. > D:\****\app\src\main\res\values\strings.xml: Error: ':' is not a valid resource name character My bulid gradle app code is apply plugin: 'com.android.application' android {

问题 This question already has answers here : Why do I get java.lang.AbstractMethodError when trying to load a blob in the db? (14 answers) Closed 3 years ago . I have this problem getting a java.io.File from the selection of a JFileChooser to upload the said java.io.File object to the MySQL Table having this table structure COL_NAME COL_TYPE ATTRIBUTES EXTRA (PK) idSample int(10) UNSIGNED ZEROFILL AUTO_INCREMENT FileName varchar(250) FileBin blob BINARY And from this Java code, the newConnection

问题 I am having a problem with the gen/r.java file. When I create or edit files in resources such as layout /values/strings.xml e.t.c the r.java file does not update. I have followed a tutorial and it for some reason won't update. There are no errors in the xml file. I have heard people say "use clean/build" e.t.c but this just removes the r.java file and I am unable to get it back after many attempts. This results in me having to redo the whole project again just to get the gen file back. Why is

问题 I have a big project into eclipse. After I upgraded from SDK manager, R.java gave problems and I deleted it. Now it remains only the folder "gen" empty. I tried, without success, these things: - clean project with and without "Build automatically", without any error (reported by eclipse) in the file inside the folder res - ctrl-shift-o -remove android.import.R - F5 space and then remove the add-in manifest -check the PACKAGE of the project - restart eclipse - restart the pc -exclude the

问题 Hi I am completely new to Android programming and the question I am asking might be something very simple, but I do not have any idea about how to make it work, so kindly bear with me. I installed android-sdk and related tools from the Android developer site. I followed their instructions to create a HelloWorld app, but I am getting some errors which I don't understand. The file MainActivity.java is an auto generated file and I keep getting errors in this file in these places: @Override

问题 I was trying to modify the R.java in android. I deleted the generated java files. After saving, it doesn't seem to change anything. The R.java file i have looks like this /* 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. */ public final class R { public static final class attr { } public static final class drawable { public static final int icon=0x7f020000; } public static

问题 I downloaded few source codes from Google source codes. I executed them on Eclipse but R.java file is not created and therefore I got many errors saying that R cannot be resolved. There is no main.xml in layout too. Some other XML files are there. How can I execute these programs? 回答1: As long as you have a valid Android project, you can use aapt package to generate the R.java from resources. Here's example usage (all should be in one line): aapt package --non-constant-id -f -m -M <abs_path