Android uses GridView to implement calendar function example (detailed code)

Android uses GridView to implement calendar function. There are a lot of codes. Send a picture first:

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Layout file:

Item：

Adapter：

Calculation class

Festival and lunar calendar calculation

Explanation of 0x04bd8,0x04ae0,0x0a570 in calendar implementation code:

The correct explanation is:

Binary form

xxxx xxxx xxxx xxxx xxxx 20-17 16-12 12-9 8-5 4-1

1-4: indicates whether there is a leap year in the current year. If yes, it is the month of leap month. If not, it is 0.

5-16: indicates whether the normal month except leap month is a big month or a small month. 1 is 30 days and 0 is 29 days.

Note: from January to December, it corresponds to the 16th to the 5th.

17-20: indicates whether the leap month is a big month or a small month. It is meaningful only when there is a leap month.

for instance:

The data for 1980 is 0x095b0

Binary: 0000 1001 0101 1011 0000

Indicates that there was no leap month in 1980. The number of days from January to December is 30, 29, 29, 30, 29, 30, 29, 30, 30, 29, 30 and 30.

The data for 1982 is 0x0a974

0000 1010 0 1001 0111 0100

It means that April in 1982 is a leap month, that is, there is the Second April, and it is a leap month.

The number of days from January to march is 30, 29, 30, 29, 29 (leap month), 30, 29, 29, 30, 29, 30, 30, 30, 30 and 30.

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