到目前为止,这是我的代码。
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (savedInstanceState != null) {
Log.d("FUApp", "Creating: " + savedInstanceState.toString());
}
else
{
Log.d("FUApp", "SavedInstanceState is null");
}
setContentView(R.layout.activity_invite_friends);
inflater = (LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE);
formHolder = (LinearLayout) findViewById(R.id.form_holder_layout);
addNewRow();
TelephonyManager tMgr =(TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
String yourPhoneNumber = tMgr.getLine1Number();
your_name = (TextView) findViewById(R.id.your_name);
your_phone_number = (TextView) findViewById(R.id.your_phone_number);
your_phone_number.setText(yourPhoneNumber);
}
public void addNewRow() {
inflater.inflate(R.layout.form_invite_friend, formHolder, true);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater menuInflater = new MenuInflater(this);
menuInflater.inflate(R.menu.activity_invite_friend, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.invite_friend_menu:
Intent intent = new Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI);
startActivityForResult(intent, 1);
addNewRow();
break;
default:
super.onOptionsItemSelected(item);
}
return true;
}
@Override
public void onActivityResult(int reqCode, int resultCode, Intent data) {
super.onActivityResult(reqCode, resultCode, data);
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.getColumnIndexOrThrow(ContactsContract.Contacts.DISPLAY_NAME));
Intent intent = new Intent(ActivityInviteFriends.this, ActivityInviteFriends.class);
intent.putExtra("name", name);
startActivityForResult(intent, 0);
}
}
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putString("your_name", String.valueOf(your_name.getText()));
Log.d("FUApp", "onSaveInstanceState: " + outState.toString());
}
当我出去挑选一个联系人时,日志说在 outState 中存在正确的值,但 onCreate 日志 SavedInstanceState 为空。
我在这里没有做什么?这可能与 onActivityResult 的 Intent 有关吗?
编辑:呃!
Intent intent = new Intent(ActivityInviteFriends.this, ActivityInviteFriends.class);
intent.putExtra("name", name);
startActivityForResult(intent, 0);
那是开始一项新的活动,不会回到我现在的活动。