question: private boolean launchInfoBarIfFileExists ( final DownloadInfo info ) { final String fileName = info . getFileName ( ) ; File dir = Environment . getExternalStoragePublicDirectory ( Environment . DIRECTORY_DOWNLOADS ) ; if ( ! dir . mkdir ( ) && ! dir . isDirectory ( ) ) return false ; String dirName = dir . getName ( ) ; final File file = new File ( dir , info . getFileName ( ) ) ; String fullDirPath = file . getParent ( ) ; if ( ! file . exists ( ) ) return false ; if ( TextUtils . isEmpty ( fileName ) || TextUtils . isEmpty ( dirName ) || TextUtils . isEmpty ( fullDirPath ) ) { return false ; } nativeLaunchDownloadOverwriteInfoBar ( this , mTab , info , info . getFileName ( ) , dirName , fullDirPath ) ; return true ; }
target:  Launch an info bar if the file name already exists for the download.