Analysis on Android mobile phone guard saving mobile phone security number

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Call setonitemclicklistener() method of listview object to set click event of item. Parameter: onitemclicklistener object

Use the anonymous inner class implementation, override the onclick () method, and pass in the parameters: listview, current view, position, ID

Send back the current phone number according to the index position

Call the get () method of the list object to get the map, and call the get (key) method to get the phone

Call setresult() method to return data. Parameters: response code, intent object

Get the intent object and new it

Call putextra (key, Val) of the intent object and put the phone in

Call the finish () method to close the current page

The activity used to open this is startactivityforresult()

Override the onactivityresult () method and pass in the intent object

Determine whether the intent object is null

Call the getstringextra () method of the intent object to get the phone number

Put the phone on EditText and save it to sp when you click next

activity

SelectContactsActivity