How to count lines in file txt android

Question

Can\'t understand how to count lines. Here is my code.

 void load() throws IOException        
{        
    File sdcard = Environment.getExternalStorageDire         


        

Answer 1

For already existing text files its possible to use LineNumberReader class and LineNumberReader.skip() and LineNumberReader.getLineNumber() methods to get total lines count in file. Something like that:

...
InputStream inputStream = new FileInputStream(new File(""));
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
LineNumberReader lineNumberReader = new LineNumberReader(bufferedReader);
try {
    lineNumberReader.skip(Long.MAX_VALUE);
} catch (IOException e) {
    e.printStackTrace();
}
linesInFile = lineNumberReader.getLineNumber() + 1;  // because line numbers starts from 0
...