android 怎么调用联系人列表，并将选择的联系人号码显示在文本框里

跳转到联系人：
Intent i = new Intent(Intent.ACTION_PICK);
i.setType("vnd.android.cursor.dir/phone");
startActivityForResult(i, 0);

获取选择的号码：
protected void onActivityResult (int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);

switch (requestCode) {
case 0:
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;
}
}