Android manifest中声明权限：

public class MainActivity extends AppCompatActivity {

ArrayAdapter adapter;

List contactsList=new ArrayList<>();

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

ListView contactsView=(ListView)findViewById(R.id.contacts_view);

adapter=new ArrayAdapter(this,android.R.layout.simple_list_item_1,contactsList);

contactsView.setAdapter(adapter);

//判断是否授权

if(ContextCompat.checkSelfPermission(this,Manifest.permission.READ_CONTACTS)!= PackageManager.PERMISSION_GRANTED){

ActivityCompat.requestPermissions(this,new String[]{Manifest.permission.READ_CONTACTS},1);

}else{

readContacts();

}

}

//使用readContacts方法来读取联系人

private void readContacts(){

Cursor cursor=null;

try{

cursor=getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,null,null,null,null);

if(cursor!=null) {

while (cursor.moveToNext()) {

//读取用户名和号码

String displayName = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));

/*ContactsContract.CommonDataKinds.Phone类提供一个CONTENT_URI常量，即已经是parse()方法解析出来的结果，

不需重复调用*/

String number = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));

contactsList.add(displayName + "\n" + number);

}

//刷新ListView

adapter.notifyDataSetChanged();

}

}catch (Exception e){

e.printStackTrace();

}finally {

if(cursor!=null){

cursor.close();

}

}

}

@Override

public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {

switch (requestCode){

case 1:

if(grantResults.length>0&&grantResults[0]==PackageManager.PERMISSION_GRANTED){

readContacts();

}else{

Toast.makeText(this,"你拒绝了权限的访问！！",Toast.LENGTH_SHORT).show();

}

break;

default:

}

}

}

xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:app="http://schemas.android.com/apk/res-auto"

xmlns:tools="http://schemas.android.com/tools"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical">

android:layout_width="match_parent"

android:layout_height="match_parent"

android:id="@+id/contacts_view">