Calendar calendar = Calendar.getInstance()
时间: 2023-11-19 21:32:43 浏览: 36
This line of code creates a new instance of the Calendar class and sets it to the current date and time based on the system clock of the device running the code. It allows developers to manipulate dates and times in various ways, such as adding or subtracting days, weeks, or months, setting specific dates, or retrieving specific components of the date and time, such as the year, month, day, hour, minute, and second.
相关问题
sp Calendar calendar = Calendar.getInstance();inner控件
我不确定你的具体意思,但是我猜测你想要在 Android 中获取一个 Calendar 实例,并将其与一个内部控件(例如 TextView)相关联。
你可以使用以下代码获取 Calendar 实例:
```
Calendar calendar = Calendar.getInstance();
```
然后,你可以使用以下代码将其与一个内部控件相关联:
```
// 获取内部控件
TextView textView = findViewById(R.id.textview);
// 将 Calendar 实例转换为字符串,并设置给 TextView
textView.setText(calendar.getTime().toString());
```
请注意,你需要将 `R.id.textview` 替换为你的 TextView 的实际 ID。此外,你可能需要对日期格式进行一些调整,以便它适合你的需求。
Calendar calendar = Calendar.getInstance(); 获取当前天
要获取当前天,您可以使用以下代码:
```
Calendar calendar = Calendar.getInstance();
int day = calendar.get(Calendar.DAY_OF_MONTH);
```
其中,`DAY_OF_MONTH`代表当前月份中的天数。`get()`方法用于获取指定字段的值,返回一个整数。