Android：如何将edittext的输入存储到.csv

Question

Fairly new to android, I come from a heavy fortran background. I've been trying to make apps, sucessful until now.

I'm having trouble finding a way for: saving an 'edittext' field by use of a button(save), then saving this user inputted data to a .csv file(preferably in internal storage).

I've found many articles but everyone glazes over the fundemental part I want(above).

the best idea I've got, is of generating the .csv in the class, then creating a method to save the 'edittext' as a new string, then to output that string to the .csv

Hopefully this can be simply explained, I just cant find this simple explanation anywhere, or at-least that I can understand...

Answer 1

Please try this.I hope this code helps you.

CSVFileWriter.java

public class CSVFileWriter {

private PrintWriter csvWriter;    
private File file;

public CSVFileWriter(File file) {
    this.file = file;

}

public void writeHeader(String data) {

    try {
        if (data != null) {

            csvWriter = new PrintWriter(new FileWriter(file, true));
            csvWriter.print(",");
            csvWriter.print(data);
            csvWriter.close();

        }
    } catch (IOException e) {
        e.printStackTrace();
    }

}
}

SampleActivity.java

public class SampleActivity extends Activity {
CSVFileWriter csv;
StringBuffer filePath;
File file;

@Override
protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    saveButton = (Button) findViewById(R.id.button1);
    editText = (EditText) findViewById(R.id.editText1);

    filePath = new StringBuffer();
    filePath.append("/sdcard/abc.csv");
    file = new File(filePath.toString());

    csv = new CSVFileWriter(file);

    saveButton.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {

            csv.writeHeader(editText.getText().toString());

        }
    });
}
}

Add this in manifest file

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />