ContentResolver（获取系统联系人）<手动展示;调用系统界面>

public class MainActivity extends AppCompatActivity {    PRivate ContentResolver contentResolver;    private ListView contacts_list;    private Cursor cursor1;    private List<Map<String,String>> list=new ArrayList<>();    private SimpleAdapter simpleAdapter;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        //初始化 控件        initview();    }    //初始化 控件    private void initview(){        //获取内容 访问者        contentResolver = getContentResolver();        contacts_list = (ListView) findViewById(R.id.contacts_list);        //获得所有 联系人        findViewById(R.id.getAllContacts_btn).setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                Uri uri=Uri.parse("content://com.android.contacts/raw_contacts");                Cursor cursor=contentResolver.query(uri,null,null,null,null);                while (cursor.moveToNext()){                   //获得所有联系人的 id                   int id=cursor.getInt(cursor.getColumnIndex("_id"));                   String name=cursor.getString(cursor.getColumnIndex("display_name"));                    //继续获取相对应的联系人的数据（电话号码）                    Uri uriAll=Uri.parse("content://com.android.contacts/raw_contacts/"+id+"/data");                    cursor1 = contentResolver.query(uriAll,null,null,null,null);                      //获取联系人 id  名字  电话                      while (cursor1.moveToNext()){                          String data1=cursor1.getString(cursor1.getColumnIndex("data1"));                          String type=cursor1.getString(cursor1.getColumnIndex("mimetype"));                          if("vnd.android.cursor.item/phone_v2".equals(type)){                              Map<String,String> map=new HashMap<String, String>();                              map.put("id",id+"");                              map.put("name",name);                              map.put("phone",data1);                              list.add(map);                          }                    }                    simpleAdapter = new SimpleAdapter(MainActivity.this,list, R.layout.contacts_item,new String[]{"id","name","phone"},new int[]{R.id.contacts_id_tv,R.id.contacts_name_tv,R.id.contacts_phone_tv});                    contacts_list.setAdapter(simpleAdapter);                }            }        });        //页面跳转 获取指定联系人        findViewById(R.id.ItetentJumpForSingleContacts_btn).setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                Intent intent = new Intent(Intent.ACTION_PICK,                        ContactsContract.Contacts.CONTENT_URI);                MainActivity.this.startActivityForResult(intent, 1);            }        });    }       @Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {        // TODO Auto-generated method stub        super.onActivityResult(requestCode, resultCode, data);        switch (requestCode) {            case 1:                if (resultCode == RESULT_OK) {                    Uri contactData = data.getData();                    Cursor cursor = managedQuery(contactData, null, null, null,                            null);                    cursor.moveToFirst();                    String num = this.getContactPhone(cursor);                    Toast.makeText(this, ""+num, Toast.LENGTH_SHORT).show();                }                break;            default:                break;        }    }    private String getContactPhone(Cursor cursor) {        // TODO Auto-generated method stub        int phoneColumn = cursor                .getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER);        int phoneNum = cursor.getInt(phoneColumn);        String result = "";        if (phoneNum > 0) {            // 获得联系人的ID号            int idColumn = cursor.getColumnIndex(ContactsContract.Contacts._ID);            String contactId = cursor.getString(idColumn);            // 获得联系人电话的cursor            Cursor phone = getContentResolver().query(                    ContactsContract.CommonDataKinds.Phone.CONTENT_URI,                    null,                    ContactsContract.CommonDataKinds.Phone.CONTACT_ID + "="                            + contactId, null, null);            if (phone.moveToFirst()) {                for (; !phone.isAfterLast(); phone.moveToNext()) {                    int index = phone                            .getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);                    int typeindex = phone                            .getColumnIndex(ContactsContract.CommonDataKinds.Phone.TYPE);                    int phone_type = phone.getInt(typeindex);                    String phoneNumber = phone.getString(index);                    result = phoneNumber;                }                if (!phone.isClosed()) {                    phone.close();                }            }        }        return result;    }}
手动展示：
  首先获取系统访问者ContnetResolver,
   再通过Uri uri=Uri.parse("content://com.android.contacts/raw_contacts");获得手机中所有的联系人Id，以及名字，
   再使用 Uri uriAll=Uri.parse("content://com.android.contacts/raw_contacts/"+id+"/data");根据id查询该人的电话，
跳转系统界面，吐司电话号码：
  Intent intent = new Intent(Intent.ACTION_PICK,                        ContactsContract.Contacts.CONTENT_URI);                MainActivity.this.startActivityForResult(intent, 1);
 跳转到系统的联系人选择界面，只能单选；
   通过回调方法传回来的值，判断有无选中；
   有选中获得号码，吐司； 
   无则无操作；