android 如何打开系统联系人界面

在android应用程序的开发中，经常要实现的一个功能是调用系统自带的联系人界面，做到选择人之后，取得相应的名称和号码，并返回。

android2.0前后实现方式上也有一定的差别：主要是2.0及以上版本联系人API发生了变化，由原来的Contacts变成了ContactsContract。

（一）2.0之前取联系人列表的方式： 声明意图方式一 Intent intent = new Intent(); intent.setAction(Intent.ACTION_PICK); intent.setData(Contacts.People.CONTENT_URI); startActivityForResult(intent, PICK_CONTACT ); 声明意图方式二 Intentintent= new Intent(Intent.ACTION_PICK); intent.setType("Contacts.People.CONTENT_TYPE");//vnd.android.cursor.dir/person startActivityForResult(intent, PICK_CONTACT ); 实现onActivityResult protected void onActivityResult (int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); switch (requestCode) { case PICK_CONTACT : if (data == null) { return; } Uri uri = data.getData(); Cursor cursor = getContentResolver().query(uri, null, null, null, null); cursor.moveToFirst(); String number = cursor.getString(cursor.getColumnIndexOrThrow(Phones.NUMBER)); Log.d(TAG, "number" + number); mContactText.setText(number); mContactText.setSelection(number.length()); break; default: break; } }
（二）2.0之后取联系人列表的方式： 声明意图方式一
Intent intent = new Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI); startActivityForResult(intent, PICK_CONTACT); 声明意图方式二 Intent intent = new Intent(Intent.ACTION_PICK); intent.setType(ContactsContract.Contacts.CONTENT_TYPE);//vnd.android.cursor.dir/contact startActivityForResult(intent, PICK_CONTACT); 实现onActivityResult @Override public void onActivityResult(int reqCode, int resultCode, Intent data) { super.onActivityResult(reqCode, resultCode, data);
switch (reqCode) { case (PICK_CONTACT) : if (resultCode == Activity.RESULT_OK) { Uri contactData = data.getData(); Cursor c = managedQuery(contactData, null, null, null, null); if (c.moveToFirst()) { String name = c.getString(c.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME)); String hasPhone = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER)); String phoneNumber = null; if ( hasPhone.equalsIgnoreCase("1")){ hasPhone = "true"; }else{ hasPhone = "false" ; } if (Boolean.parseBoolean(hasPhone)){ Cursorphones=getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = "+ contactId,null, null); while (phones.moveToNext()){ phoneNumber = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)); } phones.close(); } } } break; } }

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