Android 使用SharePerference判断是否为第一次登陆的实现代码

public class SharePreference {   Context context;   public SharePreference(Context context)   {     this.context = context;   }   /****设置状态  false为安装后第一次登录，true为已经登录过****/   public void setState()   {     SharedPreferences sp = context.getSharedPreferences("save.himi", Context.MODE_PRIVATE);     Editor editor = sp.edit();     editor.putBoolean("isLogin", true);     editor.commit();   }   /***获取状态***/   public boolean getState()   {     SharedPreferences sp = context.getSharedPreferences("save.himi", Context.MODE_PRIVATE);     boolean b = sp.getBoolean("isLogin", false);     return b;   } } 

isLogin = sp.getState();     if(isLogin){        intent = new Intent(this,Activity1.class);     }     else {       sp.setState();<span style="white-space:pre">  </span>//将登陆状态设置为true;        intent = new Intent(this,Activity2.class);     }