转自:
最近开始学习Android,主要看的是《Android应用开发揭秘》,在第3章的Example_03_02是一个读取通讯录联系人姓名和电话 的实例,但由于API 2.0中,每个联系人可以有多个电话(例如手机、住宅、公司、传真等),书中原有的实例在API 2.0的环境中会报错。
书中的Example_03_02代码:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | import android.app.Activity; import android.content.ContentResolver; import android.database.Cursor; import android.os.Bundle; import android.provider.ContactsContract; import android.provider.ContactsContract.PhoneLookup; import android.widget.TextView; public class Activity01 extends Activity { public void onCreate(Bundle savedInstanceState) { TextView tv = new TextView( this ); String string = "" ; super .onCreate(savedInstanceState); //得到ContentResolver对象 ContentResolver cr = getContentResolver(); //取得电话本中开始一项的光标 Cursor cursor = cr.query(ContactsContract.Contacts.CONTENT_URI, null , null , null , null ); //向下移动一下光标 while (cursor.moveToNext()) { //取得联系人名字 int nameFieldColumnIndex = cursor.getColumnIndex(PhoneLookup.DISPLAY_NAME); String contact = cursor.getString(nameFieldColumnIndex); //取得电话号码 int numberFieldColumnIndex = cursor.getColumnIndex(PhoneLookup.NUMBER); //此行会报错,返回值=-1 String number = cursor.getString(numberFieldColumnIndex); string += (contact+ ":" +number+ "\n" ); } cursor.close(); //设置TextView显示的内容 tv.setText(string); //显示到屏幕 setContentView(tv); } } |
参考网上的资料,找到了正确读取联系人电话的方法:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 | import android.app.Activity; import android.os.Bundle; import android.provider.ContactsContract; import android.provider.ContactsContract.PhoneLookup; import android.database.Cursor; import android.widget.TextView; import android.content.ContentResolver; public class Activity01 extends Activity { public void onCreate(Bundle savedInstanceState) { TextView tv = new TextView( this ); String string = "" ; super .onCreate(savedInstanceState); //得到ContentResolver对象 ContentResolver cr = getContentResolver(); //取得电话本中开始一项的光标 Cursor cursor = cr.query(ContactsContract.Contacts.CONTENT_URI, null , null , null , null ); //向下移动光标 while (cursor.moveToNext()) { //取得联系人名字 int nameFieldColumnIndex = cursor.getColumnIndex(PhoneLookup.DISPLAY_NAME); String contact = cursor.getString(nameFieldColumnIndex); //取得电话号码 String ContactId = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID)); Cursor phone = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null , ContactsContract.CommonDataKinds.Phone.CONTACT_ID + "=" + ContactId, null , null ); while (phone.moveToNext()) { String PhoneNumber = phone.getString(phone.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)); string += (contact + ":" + PhoneNumber + "\n" ); } } cursor.close(); //设置TextView显示的内容 tv.setText(string); //显示到屏幕 setContentView(tv); } } |
最后记得在AndroidManifest.xml声明读取联系人的API:
1 | < uses-permission android:name = "android.permission.READ_CONTACTS" /> |