如何从设备获取联系电话？

Question

我想在ListView 中显示联系电话。它运行良好。但是我想在从设备读取联系人时设置条件。条件是

1. if number digit <10 { --don't add into list-}.

2. else if(number is started from 0 then replace with 91){--Add to list}.

3. else if{number is start from + then remove it }{--add to list}。

4. else{其他都是直接加入列表}。

这是我的代码：

public class ReferFriend extends AppCompatActivity {

    ArrayList<SelectUser> selectUsers;
    List<SelectUser> temp;

    ListView listView;

    Cursor phones, email;


    ContentResolver resolver;
    SearchView search;
    SelectUserAdapter adapter;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.refer_friend);

        selectUsers = new ArrayList<SelectUser>();
        resolver = this.getContentResolver();
        listView = (ListView) findViewById(R.id.contacts_list);

        phones = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null, null, ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME + " ASC");
        LoadContact loadContact = new LoadContact();
        loadContact.execute();
    }

    // Load data on background
    class LoadContact extends AsyncTask<Void, Void, Void> {
        @Override
        protected void onPreExecute() {
            super.onPreExecute();

        }

        @Override
        protected Void doInBackground(Void... voids) {
            // Get Contact list from Phone

            if (phones != null) {
                Log.e("count", "" + phones.getCount());
                if (phones.getCount() == 0) {
                    Toast.makeText(ReferFriend.this, "No contacts in your contact list.", Toast.LENGTH_LONG).show();
                }

                while (phones.moveToNext()) {
                    Bitmap bit_thumb = null;
                    String id = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.CONTACT_ID));
                    String name = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
                    String phoneNumber = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
                    String image_thumb = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.PHOTO_THUMBNAIL_URI));
                    try {
                        if (image_thumb != null) {
                            bit_thumb = MediaStore.Images.Media.getBitmap(resolver, Uri.parse(image_thumb));
                        } else {
                            Log.e("No Image Thumb", "--------------");
                        }
                    } catch (IOException e) {
                        e.printStackTrace();
                    }

                    SelectUser selectUser = new SelectUser();
                    selectUser.setThumb(bit_thumb);
                    selectUser.setContactName(name);
                    selectUser.setPhone(phoneNumber);
                    selectUser.setContactEmail(id);
                    selectUser.setCheckedBox(false);
                    selectUsers.add(selectUser);
                }
            } else {
                Log.e("Cursor close 1", "----------------");
            }
            //phones.close();
            return null;
        }

        @Override
        protected void onPostExecute(Void aVoid) {
            super.onPostExecute(aVoid);
            adapter = new SelectUserAdapter(selectUsers, ReferFriend.this);
            listView.setAdapter(adapter);

            // Select item on listclick
            listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
                @Override
                public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {

                    Log.e("search", "here---------------- listener");

                    SelectUser data = selectUsers.get(i);
                }
            });

            listView.setFastScrollEnabled(true);
        }
    }

    @Override
    protected void onStop() {
        super.onStop();
        phones.close();
    }

    public class SelectUserAdapter extends BaseAdapter {

        public List<SelectUser> _data;
        private ArrayList<SelectUser> arraylist;
        Context _c;
        ViewHolder v;
        RoundImage roundedImage;

        public SelectUserAdapter(List<SelectUser> selectUsers, Context context) {
            _data = selectUsers;
            _c = context;
            this.arraylist = new ArrayList<SelectUser>();
            this.arraylist.addAll(_data);
        }

        @Override
        public int getCount() {
            return _data.size();
        }

        @Override
        public Object getItem(int i) {
            return _data.get(i);
        }

        @Override
        public long getItemId(int i) {
            return i;
        }

        @TargetApi(Build.VERSION_CODES.LOLLIPOP)
        @Override
        public View getView(int i, View convertView, ViewGroup viewGroup) {
            View view = convertView;
            if (view == null) {
                LayoutInflater li = (LayoutInflater) _c.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                view = li.inflate(R.layout.contact_info, null);
                Log.e("Inside", "here--------------------------- In view1");
            } else {
                view = convertView;
                Log.e("Inside", "here--------------------------- In view2");
            }

            v = new ViewHolder();

            v.title = (TextView) view.findViewById(R.id.name);
            v.check = (CheckBox) view.findViewById(R.id.check);
            v.phone = (TextView) view.findViewById(R.id.no);
            v.imageView = (ImageView) view.findViewById(R.id.pic);

            final SelectUser data = (SelectUser) _data.get(i);
            v.title.setText(data.getContactName());
            v.check.setChecked(data.getCheckedBox());
            //v.phone.setText(data.getPhone());

            //I want to apply that condition here

            /*if (data.getPhone().length() <= 10) {
                v.phone.setText("Contact not Added to list");
            } else if(data.getPhone().length() == 10){
                v.phone.setText(data.getPhone());
            } else if(data.getPhone().equalsIgnoreCase("+")){
                v.phone.setText(data.getPhone());
            }else if(data.getPhone().startsWith("0")){
                v.phone.setText(data.getPhone().replace(0,91));
            }*/

            view.setTag(data);
            return view;
        }

        // Filter Class
        public void filter(String charText) {
            charText = charText.toLowerCase(Locale.getDefault());
            _data.clear();
            if (charText.length() == 0) {
                _data.addAll(arraylist);
            } else {
                for (SelectUser wp : arraylist) {
                    if (wp.getContactName().toLowerCase(Locale.getDefault())
                            .contains(charText)) {
                        _data.add(wp);
                    }
                }
            }
            notifyDataSetChanged();
        }
        class ViewHolder {
            ImageView imageView;
            TextView title, phone;
            CheckBox check;
        }
    }
}

Answer 1

在添加联系人记录验证功能之前，它将验证您所有需要的条件。如果验证成功，则该函数将返回 true，否则返回 false。如果返回 true，则将该联系人添加到 selectUser 对象，否则不要添加。

Answer 2

SelectUser selectUser = new SelectUser();
            selectUser.setThumb(bit_thumb);
            selectUser.setContactName(name);
            selectUser.setPhone(phoneNumber);
            selectUser.setContactEmail(id);
            selectUser.setCheckedBox(false);


            //object preparation
            Boolean flag = prepareObject(selectUser);

            if(flag){
            //add valid object to arraylist
            selectUsers.add(selectUser);
            }else{
            //invalid contact details
            }

            //method to validate and update object
            public Boolean prepareObject(SelectUser obj){

                if(obj.getPhone.lenght < 10) {
                    //dont add to list
                }else{

                    String temp = obj.getPhone.charAt(0);
                    if(temp == "0"){

                        //replace it with 91 and update object 

                        return true
                    }else if(temp == "+"){

                        //remove it and update object
                        return true

                    }else{

                    //add to object
                    return true
                    }

                }


                return false;
            }

我已经为您的问题写下了逻辑代码。只需对其进行必要的更改，它肯定会起作用。

您直接将对象添加到 arraylist 而不检查您的条件。 您在适配器上编写错误的条件，apdater 只会从 arraylist 填充数据。如果您将有效数据放入 arraylist，则无需在适配器上设置条件。