(Android displays the source code of the call record module, allowing users to detect the communication records of today, yesterday, the day before yesterday and a few days ago on the spot, including missed calls, received calls, dialed calls, etc. Technically, this source code can demonstrate some instance operations for Android novices. For example, after reading the data, fill the database into a designated line, bind the data to the view, add trigger events for clicking the SMS icon, and make it enter the SMS sending interface, etc, They are all basic Android skills that need to be mastered.)
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