android使用sharedPreferences()方法读写文件操作

写入文件

@Override    public void onClick(View v) {        // TODO Auto-generated method stub        switch(v.getId()){        //存储数据            case R.id.save_data:                //通过getSharedPreferences()方法指定SharedPreferences的文件名为data，并且得到                //SharedPreferences.Editor对象；添加不同类型的数据；调用commit()方法提交，完成存储                SharedPreferences.Editor editor = getSharedPreferences("data",MODE_PRIVATE).edit();                editor.putString("myName","cat_pp");                editor.putInt("myAge",23);                editor.putBoolean("haveGirlfriend", true);                editor.commit();                break;        **//读取数据**            case R.id.restore_data:                //通过getSharedPreferences()方法得到SharedPreferences对象，调用各自的方法读取存储的数据，打印                SharedPreferences pref = getSharedPreferences("data",MODE_PRIVATE);                String myName = pref.getString("myName","");                int myAge = pref.getInt("myAge",0);                boolean haveGirlfriend = pref.getBoolean("haveGirlfriend",false);                Log.d("MainActivity","name is " + myName);                Log.d("MainActivity","age is " + myAge);                Log.d("MainActivity","girlfriend" + haveGirlfriend);                default:                    break;        }    }

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