android 由data 获取联系人信息。

//跳转到联系人界面

private void pickContact() { 

   // Create an intent to "pick" a contact, as defined by the content provider URI 

   Intent intent = new Intent(Intent.ACTION_PICK, Contacts.CONTENT_URI); 

   startActivityForResult(intent, PICK_CONTACT_REQUEST); 

} 

 

//返回来的Intent中的data数据是用户选择的联系人的Uri ，表示资源的位置，以便ContentProvider去查找（query）资源(The URI, using the content:// scheme, for the content to retrieve)

@Override 

protected void onActivityResult(int requestCode, int resultCode, Intent data) { 

   if (resultCode == Activity.RESULT_OK && requestCode == PICK_CONTACT_REQUEST) { 

       

    System.out.println("data.getData() " + data.getData());

// 输出为： content://com.android.contacts/contacts/lookup/0r5-385C3A525C/5

       Cursor cursor = getContentResolver().query(data.getData(),  new String[] {Contacts.DISPLAY_NAME}, null, null, null); 

       if (cursor.moveToFirst()) { 

           int columnIndex = cursor.getColumnIndex(Contacts.DISPLAY_NAME); 

           String name = cursor.getString(columnIndex); 

           System.out.println(name);

       } 

   } 

}