android读写文件函数代码

    private void readFromFile() {

        try {            

            FileInputStream file = openFileInput("test.txt");

            byte[] buffer = new byte[file.available()];

            file.read(buffer);

            file.close();

            String name=new String(buffer); 

            TextView text = (TextView) findViewById(R.id.test);

            text.setText(name);

        } catch (IOException e) {

            e.printStackTrace();

        }        

    }



    private void writeToFile() {

        try {

            String str = "测试中文";

            FileOutputStream file = openFileOutput("test.txt", MODE_APPEND);

            file.write(str.getBytes());

            file.close();

        } catch (IOException e) {

            e.printStackTrace();

        }

    }