question: public String checkWriteProtected ( int resIdAction , final File ... filesToBeModified ) { if ( filesToBeModified != null ) { for ( File file : filesToBeModified ) { if ( ( file != null ) && ( file . exists ( ) ) && ( ! file . canWrite ( ) ) ) { String action = ( resIdAction == 0 ) ? "" : mContext . getString ( resIdAction ) ; return mContext . getString ( R . string . file_err_writeprotected , file . getAbsolutePath ( ) , action ) ; } } } return null ; }
target:  Check if all files in selectedFileNamesToBeModified are not write protected.