Android開發-使用SharedPreferences保存數據-常用操作

一、保存數據

        SharedPreferences preferences = getSharedPreferences("settings", MODE_PRIVATE);
        SharedPreferences.Editor editor = preferences.edit();

        editor.putFloat("age", Float.parseFloat(et_age.getText().toString()));
        editor.apply();

二、讀取數據

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