Error while building cordova project

i have a working android project whose www is provided by my freind. And I created cordova project and added android platform for the same. Then replaced the www folder with the project www. When i build the cordova project it shows this error.

BUILD FAILED
C:\Android\adt-bundle\sdk\tools\ant\build.xml:932: The following error occurred
while executing this line:
C:\Android\adt-bundle\sdk\tools\ant\build.xml:950: null returned: -1073741819

Total time: 11 seconds

C:\Android\fresh\platforms\android\cordova\node_modules\q\q.js:126
                    throw e;
                          ^
Error code 1 for command: cmd with args: /s,/c,ant,debug,-f,C:\Android\fresh\pla
tforms\android\build.xml,-Dout.dir=ant-build,-Dgen.absolute.dir=ant-gen
Error: C:\Android\fresh\platforms\android\cordova\build.bat: Command failed with
 exit code 8
    at ChildProcess.whenDone (C:\Users\riyas\AppData\Roaming\npm\node_modules\co
rdova\node_modules\cordova-lib\src\cordova\superspawn.js:135:23)
    at ChildProcess.emit (events.js:98:17)
    at maybeClose (child_process.js:756:16)
    at Process.ChildProcess._handle.onexit (child_process.js:823:5)