android - 如何计算文件txt android中的行数

Question

无法理解如何计算行数。这是我的代码。

 void load() throws IOException        
{        
    File sdcard = Environment.getExternalStorageDirectory();
    File file = new File(sdcard,"agenda.file");
    StringBuilder text = new StringBuilder();

    try {
        BufferedReader br = new BufferedReader(new FileReader(file));
        String line;

        while ((line = br.readLine()) != null) {
            text.append(line);
            text.append('\n');

           TextView te=(TextView)findViewById(R.id.textView1);

        }


    }
    catch (IOException e) {
        //You'll need to add proper error handling here
    }
    Button monpopb = (Button) findViewById(R.id.button13);
    monpopb.setText(text);  

}那么，如何在TextView中统计和设置文本呢？谢谢你!

Answer 1

这是您要找的吗？

void load() throws IOException        
{        
File sdcard = Environment.getExternalStorageDirectory();
File file = new File(sdcard,"agenda.file");
StringBuilder text = new StringBuilder();

try {
    BufferedReader br = new BufferedReader(new FileReader(file));
    String line;

    TextView te=(TextView)findViewById(R.id.textView1);
    int lineCount = 0;
    while ((line = br.readLine()) != null) {
        text.append(line);
        text.append('\n');

        lineCount++;
    }
    te.setText(String.valueOf(lineCount));

}
catch (IOException e) {
    //You'll need to add proper error handling here
}
    Button monpopb = (Button) findViewById(R.id.button13);
    monpopb.setText(text);  
}