无法使用命令行编译Android / Java项目

Question

I'm new to using anything other than Eclipse for compiling Java projects. I am trying to use command line to compile a java file that uses Android but I have been unsuccessful.

I've been trying variations of the following (where my root directory is my project directory):

    javac -classpath C:\Program_Files\Java\jdk1.7.0_04\bin;
          C:\Program_Files\Android\android-sdk\platforms\android-15\android.jar
          src\package1\package2\projectName.Java

It hasn't been working. I get a lot of errors saying:

    package android.content does not exist
    package android.database does not exist
    package android.net does not exist
    package android.os does not exist
    package android.util does not exist

Am I doing something drastically wrong here? How can I get it to recognize those android packages? Could someone point me in the right direction here? I've read a bunch of documentation on javac, command-line and classpaths, but I can't seem to pinpoint the main problem here. Thank you.

NEW

I'm not sure if this information will make a difference... but when I run my program in eclipse, it uses the Android 2.2 with the directory C:\\Program_Files\\Android\\android-sdk\\platforms\\android-8\\android.jar instead of C:\\Program_Files\\Android\\android-sdk\\platforms\\android-15\\android.jar . Does this change anything? When I try to go to that folder on my computer, though... it does not exist. The android-15 folder is what exists. I tried changing my classpath to the directory with android-8 , but unfortunately it did not change anything. Any ideas?

Answer 1

There's a guide on how to build from command-line . Try:

ant release

or

ant debug

Answer 2

For the classpath, I think your directory is not correct. For one thing, the bin subdirectory normally has the EXEs or DLLs on a Windows system.

My JRE 1.6 is path " C:\\Program Files\\Java\\jdk1.6.0_25\\lib " for example. Another possible issue is the directory Program_Files, mine does not have underline, instead a space. If I compile on command line instead of Eclipse, I would put quotes around this path.

The CLASSPATH can take several directories. So for experimenting, use several directories to fix the compile error.

New My Android SDK is at C:\\android-sdk-windows\\tools. There are many JAR files at android-sdk-windows; find all directories with JARs. I think this is it! consider it your lucky day.

Good luck,

Tommy Kwee

Answer 3

I feel it could be 1 of 2 things. First, your path is not correct, however in this case it seems to be ok.

The second thing, shot in the dark here, does Android support java 1.7? Try using 1.6 and see if that helps.

It anyone using 1.7, I haven't tried this yet but I know compiling the source was funky with different driver versions.