如何检查SharedPreferences中是否存在数据

Question

我们如何检查SharedPreferences.if中是否存在数据,然后启动新活动？

Answer 1

SharedPreferences prefs = getSharedPreferences("application_settings", 0);
int id = prefs.getInt("id", 0);
if(id > 0) {
  startActivity(new Intent(CurrentCLass.this, NextClass.class));
}