Question

我一直在寻找一个解决方案一个星期，但找不到任何可以帮助我解决问题的方法。我有一个按钮，可让您从手机上的联系人列表中选择联系人我拥有的问题是我希望将选定的联系人填充到列表视图中，然后通过选择另一个联系人再次重复，然后再次将联系人放在列表视图下以创建运行列表。此列表将用于发送所选联系人的群发电子邮件。

任何方向都会很棒。感谢。

这是我到目前为止所拥有的......

xml layout

<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">

<Button
    android:id="@+id/selectGuestListButton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/selectGuestList"
    android:layout_alignParentTop="true"
    android:layout_centerHorizontal="true" />

<ListView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/selectGuestListButton"
    android:id="@+id/listView">
    </ListView>

我的代码

 public class GuestListFragment extends Fragment {

private Event mEvent;

private Button mEventGuestListButton;

private static final int REQUEST_CONTACT = 0;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    mEvent = new Event();
}

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (resultCode != Activity.RESULT_OK) return;
    if (requestCode == REQUEST_CONTACT) {
        Uri contactUri = data.getData();

        //specify which fields you want to query to return values for
        String[] queryFields = new String[]{
                ContactsContract.Contacts.DISPLAY_NAME,

        };

        //perform your query
        Cursor c = getActivity().getContentResolver().query(contactUri, queryFields, null, null, null);

        //double check you get results
        if (c.getCount() == 0) {
            c.close();
            return;
        }

        //pull out first column of the first row of data
        c.moveToFirst();
        String guest = c.getString(0);
        mEvent.setGuest(guest);
        mEventGuestListButton.setText(guest);

        c.close();
    }
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup parent, Bundle savedInstanceState) {
    View v = inflater.inflate(R.layout.guest_list, parent, false);


    //guest list button
    mEventGuestListButton = (Button)v.findViewById(R.id.selectGuestListButton);
    mEventGuestListButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent i = new Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI);
            startActivityForResult(i, REQUEST_CONTACT);
        }
    });

    if (mEvent.getGuest() != null){
        mEventGuestListButton.setText(mEvent.getGuest());
    }


    return v;

}

}

设置按钮单击“值”到Android中的ListView

0 个答案: