获取手机联系人---手机短信

String NAME = ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME;//获取联系人名称

String PHONE_NUMBER = ContactsContract.CommonDataKinds.Phone.NUMBER;//获取联系人号码

Uri uri = ContactsContract.CommonDataKinds.Phone.CONTENT_URI;//获取phone表的Uri

Uri uri = Telephony.Sms.CONTENT_URI; //获取短信的数据库表

获取发送过来的短信号码并发送短信

public class MainActivity extends Activity {     Uri uri = Telephony.Sms.CONTENT_URI;     @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);         final ContentResolver resolver = getContentResolver();         ContentObserver observer = new ContentObserver(null) {             @Override             public void onChange(boolean selfChange) {                 super.onChange(selfChange);                 Cursor cursor = resolver.query(uri, null, null, null, null);                 cursor.moveToFirst();                 String address = cursor.getString(cursor.getColumnIndex("address"));                 int type = cursor.getInt(cursor.getColumnIndex("type"));                 if(address.endsWith("7500") && type == 1){//1表是发送过来的数据                     SmsManager sms = SmsManager.getDefault();                     sms.sendTextMessage(address, null, "自动发送", null, null);                 }             }         };         resolver.registerContentObserver(uri, true, observer);     } }