getDouble static method

Future<double> getDouble(
  1. String key, [
  2. double defValue = 0.0
])

获取double类型数据，如果没有则返回默认值 key 键 defValue 默认值：默认为0.0

Implementation

static Future<double> getDouble(String key, [double defValue = 0.0]) async {
  SharedPreferences prefs = await SharedPreferences.getInstance();
  double? value = prefs.getDouble(key) ?? defValue;
  _println('getDouble', key, value);
  return value;
}