Android开发-使用SharedPreferences保存数据-常用操作

一、保存数据

        SharedPreferences preferences = getSharedPreferences("settings", MODE_PRIVATE);        SharedPreferences.Editor editor = preferences.edit();        editor.putFloat("age", Float.parseFloat(et_age.getText().toString()));        editor.apply();

二、读取数据

        SharedPreferences preferences = getSharedPreferences("settings", MODE_PRIVATE);        float age =  preferences.getFloat("age", 20);