如何将联系人从我的android手机联系人同步到我的android应用程序，如Whatsapp n Skype

Question

我正在制作一个类似于whatsapp的android应用程序。我想知道的是如何将android联系人与我的应用程序同步，以便在我的应用中注册的号码以及我的android联系人中的号码都有一个符号。例如，在你的联系人列表中，你会看到一个skype图标或whatsapp图标，其中包含那些在skype或whatsapp注册的联系人。还希望在我的应用程序的联系人中显示该联系人。任何人都可以指导我做什么。谢谢提前

Answer 1

尝试这个

public class ContactActivity extends Activity {
Cursor cursor;
ArrayList<String> NameList=new ArrayList<String>();
ListView listView;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    listView=(ListView)findViewById(R.id.listveiew_lv);
//  NameList=new ArrayList<String>();
    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,NameList);
    cursor = getContentResolver().query(Phone.CONTENT_URI, null, null, null, null);
    while (cursor.moveToNext()) {
        int nameIdx = cursor.getColumnIndex(Phone.DISPLAY_NAME);   
        int phoneNumberIdx = cursor.getColumnIndex(Phone.NUMBER);
        String name = cursor.getString(nameIdx);
        String phone = cursor.getString(phoneNumberIdx);    
        NameList.add(phone);
        System.out.println("Name is :"+name +" number is : "+phone);
        System.out.println("Name is :"+name +" number is : "+phone);
        System.out.println("Name is :"+name +" number is : "+phone);

    }
    listView.setAdapter(adapter);
    listView.setOnItemClickListener(new OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                long arg3) {
            // TODO Auto-generated method stub
            Toast.makeText(getApplicationContext(), NameList.get(arg2), 1).show();
        }
    });
}
public void onClick(View arg0) {
    // TODO Auto-generated method stub
    Intent i = new Intent(Intent.ACTION_PICK, Contacts.CONTENT_URI);
    super.startActivityForResult(i, 1001);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    // TODO Auto-generated method stub
    super.onActivityResult(requestCode, resultCode, data);
    switch (requestCode) {
    case 1001:
        if (resultCode == Activity.RESULT_OK) {
            Cursor s = getContentResolver().query(Phone.CONTENT_URI, null,
                    null, null, null);
            if (s.moveToFirst()) {
                String phoneNum = s.getString(s.getColumnIndex(Phone.NUMBER));
                Toast.makeText(getBaseContext(), phoneNum, Toast.LENGTH_LONG).show();
            }
        }
        break;
    }
}

}