information overload book

Android obtains the contact information in the address book. The Code is as follows: /*** Get the contact information, including the name, number, and profile * @ return */private arraylist Here: phonecontactor is a custom class for storing contact information. Do not forget to add the permission:

", PCON-GT;DHB[I].ADDR);printf("\ n"); }}voidClear (Pcon Pcon) {Pcon->count =0;}voidInit (Pcon Pcon) {inti =0; FILE *pfread = fopen ("Contact.txt","R");if(Pfread = = NULL) {Perror ("Contact.txt");Exit(exit_failure); } while(Fread ( (Pcon->dhb[i)),sizeof(PEO),1, pfread) = =1) {i++; } pcon->count = i; Fclose (Pfread);}voidSave (Pcon Pcon) {inti =0; FILE *pfwrite = fopen ("Contact.txt","W");if(Pfwrite = = NULL) {Perror ("Contact.txt");Exit(exit_failure); } for(i=0; isizeof(PEO),1, Pfwrite); } fc

1. The most concise methodUsing classesAndroid.provider.ContactsContract.CommonDataKinds.Phone;The code is as follows:You can then use the ListView to display your name and phone number. Attention:1. If a person has two telephones, they are displayed separately.2. If there are two identical people, they will be displayed separately and will not show a single person.Operation Result:2. General methodsusing ClassesThe code is as follows:Get the name and phone number, put it in the map, and then in

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