Androlid入门之文件系统操作（三）文件读写

     

import java.io.*;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.*;

public class FileIOTest extends Activity {
   
	private LinearLayout mainView=null;
	private Button writeButton=null;
	private Button readButton=null;
	private TextView tv=null;
	
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        writeButton=new Button(this);
        writeButton.setText("文件写入");
        writeButton.setOnClic