问题
I am trying to implement "Swipe to load more" method in my application but I got that error when I swipe down in the first time. This is what it showed in the console:
E/SwipeRefreshLayout: Got ACTION_MOVE event but don't have an active pointer id. E/SwipeRefreshLayout: Got ACTION_MOVE event but don't have an active pointer id. E/SwipeRefreshLayout: Got ACTION_MOVE event but don't have an active pointer id. E/SwipeRefreshLayout: Got ACTION_MOVE event but don't have an active pointer id.
This is my layout code:
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout 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:fitsSystemWindows="true"
tools:context="training.com.chatgcmapplication.ChatActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="@style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.SwipeRefreshLayout
android:id="@+id/swipeLayout"
android:layout_width="match_parent"
android:layout_height="380dp">
<ListView
android:id="@+id/listMessage"
android:layout_width="match_parent"
android:layout_height="380dp"
android:layout_alignParentLeft="false"
android:layout_alignParentTop="false"
android:divider="@null"
android:listSelector="@android:color/transparent"
android:stackFromBottom="true"
android:transcriptMode="alwaysScroll" />
</android.support.v4.widget.SwipeRefreshLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:weightSum="1">
<EditText
android:id="@+id/txt_chat"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.92"
android:inputType="text" />
<Button
android:id="@+id/btn_send"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_marginLeft="30dp"
android:text="@string/btn_send" />
</LinearLayout>
</LinearLayout>
</android.support.design.widget.CoordinatorLayout>
And when I swipe in the second time: it load double data.
This is ChatActivity, what implement that method:
public class ChatActivity extends AppCompatActivity implements View.OnClickListener, SwipeRefreshLayout.OnRefreshListener {
private static EditText txt_chat;
private String registId;
private String chatTitle;
private MessageSender mgsSender;
private int userId;
private DatabaseHelper databaseHelper;
private TimeUtil timeUtil;
private MessageAdapter messageAdapter;
private int offsetNumber = 5;
private SwipeRefreshLayout swipeRefreshLayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_chat);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
if (getSupportActionBar() != null) {
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
}
Button btn_send = (Button) findViewById(R.id.btn_send);
txt_chat = (EditText) findViewById(R.id.txt_chat);
swipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.swipeLayout);
swipeRefreshLayout.setOnRefreshListener(this);
ListView lv_message = (ListView) findViewById(R.id.listMessage);
timeUtil = new TimeUtil();
databaseHelper = DatabaseHelper.getInstance(getApplicationContext());
btn_send.setOnClickListener(this);
Bundle bundle = getIntent().getExtras();
chatTitle = bundle.getString("titleName");
if (getIntent().getBundleExtra("INFO") != null) {
chatTitle = getIntent().getBundleExtra("INFO").getString("name");
this.setTitle(chatTitle);
} else {
this.setTitle(chatTitle);
}
registId = bundle.getString("regId");
userId = databaseHelper.getUser(chatTitle).getUserId();
List<Message> messages = databaseHelper.getLastTenMessages(AppConfig.USER_ID, databaseHelper.getUser(chatTitle).getUserId(), 0);
messageAdapter = new MessageAdapter(getApplicationContext(), R.layout.chat_item, (ArrayList<Message>) messages);
LocalBroadcastManager.getInstance(this).registerReceiver(onNotice, new IntentFilter("Msg"));
if (messages.size() > 0) lv_message.setAdapter(messageAdapter);
}
private BroadcastReceiver onNotice = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String message = intent.getStringExtra("message");
try {
Message messageObj = new Message();
messageObj.setMessage(message);
messageObj.setUserId(userId);
messageObj.setSender_id(AppConfig.USER_ID);
messageObj.setExpiresTime(timeUtil.formatDateTime(timeUtil.getCurrentTime()));
messageAdapter.add(messageObj);
} catch (ParseException e) {
e.printStackTrace();
}
messageAdapter.notifyDataSetChanged();
}
};
@Override
public void onBackPressed() {
super.onBackPressed();
finish();
}
@Override
protected void onDestroy() {
LocalBroadcastManager.getInstance(this).unregisterReceiver(onNotice);
super.onDestroy();
}
private static MessageSenderContent createMegContent(String regId, String title) {
String message = txt_chat.getText().toString();
MessageSenderContent mgsContent = new MessageSenderContent();
mgsContent.addRegId(regId);
mgsContent.createData(title, message);
return mgsContent;
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_send:
String message = txt_chat.getText().toString();
databaseHelper = DatabaseHelper.getInstance(getApplicationContext());
mgsSender = new MessageSender();
new AsyncTask<Void, Void, Void>() {
@Override
protected Void doInBackground(Void... params) {
MessageSenderContent mgsContent = createMegContent(registId, AppConfig.USER_NAME);
mgsSender.sendPost(mgsContent);
return null;
}
}.execute();
databaseHelper.addMessage(message, timeUtil.getCurrentTime(), userId, AppConfig.USER_ID);
txt_chat.setText("");
try {
Message messageObj = new Message();
messageObj.setMessage(message);
messageObj.setUserId(AppConfig.USER_ID);
messageObj.setSender_id(userId);
messageObj.setExpiresTime(timeUtil.formatDateTime(timeUtil.getCurrentTime()));
messageAdapter.add(messageObj);
} catch (ParseException e) {
e.printStackTrace();
}
messageAdapter.notifyDataSetChanged();
break;
}
}
@Override
public void onRefresh() {
swipeRefreshLayout.setRefreshing(true);
List<Message> messages = databaseHelper.getLastTenMessages(AppConfig.USER_ID, databaseHelper.getUser(chatTitle).getUserId(), offsetNumber);
messageAdapter.insertToTheFirst(messages);
messageAdapter.notifyDataSetChanged();
offsetNumber += 5;
Log.i("Offset number", offsetNumber + "");
swipeRefreshLayout.setRefreshing(false);
}
}
UPDATE ISSUE's REASON
I found the reason of that issue. It due to I force the listview scroll to the bottom when it init with this code :
android:stackFromBottom="true"
I replace that code with this but still have same issue:
lv_message.post(new Runnable() {
@Override
public void run() {
lv_message.setSelection(lv_message.getCount() -1);
}
});
回答1:
I think the problem is , You are trying to show , dismiss and refresh swipeRefreshLayout inside the same method i.e onRefresh().
Make seperate methods for showing and dismissing dialog and invoke them from the place where they are required as I have done below:
@Override
public void onRefresh() {
// refresh code here.
}
@Override
public void showDialog() {
swipeRef.post(new Runnable() {
@Override
public void run() {
if(swipeRef != null)
swipeRef.setRefreshing(true);
}
});
}
@Override
public void dismissDialog() {
if(swipeRef!=null && swipeRef.isShown() )
swipeRef.setRefreshing(false);
}
来源：https://stackoverflow.com/questions/35568075/swiperefreshlayout-got-error-and-cannot-refresh-load-more-in-the-first-time