Question

我使用谷歌地图片段在android recycleler视图中显示地图，我使用此代码以语法显示谷歌地图

        SupportMapFragment supportMapFragment =  
SupportMapFragment.newInstance();
        supportFragment.beginTransaction().replace(R.id.map_container, 
supportMapFragment).commit();

但问题是它只在回收器视图中的地图容器框架布局的第一个元素中显示地图但不是全部，如果我在回收器视图中滚动，那么第一个元素也会消失，为了测试目的，我试图改变背景资源map容器，它适用于所有元素，但如何在所有元素中显示地图片段

适配器

public class PrivateDialogMessagesAdapter extends BaseDialogMessagesAdapter implements OnMapReadyCallback {

private static int EMPTY_POSITION = -1;

Context context;

GoogleMap map;

FragmentManager supportFragment;

private int lastRequestPosition = EMPTY_POSITION;
private int lastInfoRequestPosition = EMPTY_POSITION;
private FriendOperationListener friendOperationListener;

public PrivateDialogMessagesAdapter(
        BaseActivity baseActivity,
        FriendOperationListener friendOperationListener,
        List<CombinationMessage> objectsList,
        ChatUIHelperListener chatUIHelperListener,
        Dialog dialog,
        Context context,
        FragmentManager fragmentManager) {
    super(baseActivity, objectsList);
    this.friendOperationListener = friendOperationListener;
    this.chatUIHelperListener = chatUIHelperListener;
    this.dialog = dialog;
    this.context = context;
    this.supportFragment = fragmentManager;
}


@Override
public PrivateDialogMessagesAdapter.ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
    switch (viewType) {
        case TYPE_REQUEST_MESSAGE:
            return new ViewHolder(this, layoutInflater.inflate(R.layout.item_friends_notification_message, viewGroup, false));
        case TYPE_OWN_MESSAGE:
            // MapFragment mapFragment = (MapFragment) ((Activity)context).getFragmentManager().findFragmentById(R.id.location_message_own);
            //mapFragment.getMapAsync(this);
            return new ViewHolder(this, layoutInflater.inflate(R.layout.item_message_own, viewGroup, false));
        case TYPE_OPPONENT_MESSAGE:
            return new ViewHolder(this, layoutInflater.inflate(R.layout.item_private_message_opponent, viewGroup, false));
        default:
            return null;
    }
}


@Override
public void onBindViewHolder(BaseClickListenerViewHolder<CombinationMessage> baseClickListenerViewHolder, int position) {
    CombinationMessage combinationMessage = getItem(position);
    boolean ownMessage = !combinationMessage.isIncoming(currentUser.getId());

    ViewHolder viewHolder = (ViewHolder) baseClickListenerViewHolder;
    boolean friendsRequestMessage = DialogNotification.Type.FRIENDS_REQUEST.equals(
            combinationMessage.getNotificationType());
    boolean friendsInfoRequestMessage = combinationMessage
            .getNotificationType() != null && !friendsRequestMessage;

    if (viewHolder.verticalProgressBar != null) {
        viewHolder.verticalProgressBar.setProgressDrawable(baseActivity.getResources().getDrawable(R.drawable.vertical_progressbar));
    }

    if (friendsRequestMessage) {
        viewHolder.messageTextView.setText(combinationMessage.getBody());
        viewHolder.timeTextMessageTextView.setText(DateUtils.formatDateSimpleTime(combinationMessage.getCreatedDate()));

        setVisibilityFriendsActions(viewHolder, View.GONE);
    } else if (friendsInfoRequestMessage) {
        viewHolder.messageTextView.setText(combinationMessage.getBody());
        viewHolder.timeTextMessageTextView.setText(DateUtils.formatDateSimpleTime(combinationMessage.getCreatedDate()));

        setVisibilityFriendsActions(viewHolder, View.GONE);

        lastInfoRequestPosition = position;
    } else if (combinationMessage.getAttachment() != null) {
        resetUI(viewHolder);

        setViewVisibility(viewHolder.progressRelativeLayout, View.VISIBLE);
        viewHolder.timeAttachMessageTextView.setText(DateUtils.formatDateSimpleTime(combinationMessage.getCreatedDate()));

        if (ownMessage && combinationMessage.getState() != null) {
            setMessageStatus(viewHolder.attachDeliveryStatusImageView, State.DELIVERED.equals(
                    combinationMessage.getState()), State.READ.equals(combinationMessage.getState()));
        }

        displayAttachImageById(combinationMessage.getAttachment().getAttachmentId(), viewHolder);
    } else if (combinationMessage.getBody().toString().equals("no")) {
        resetUI(viewHolder);
        setViewVisibility(viewHolder.ownLocationMessageContainer, View.VISIBLE);
        viewHolder.ownLocationMessageContainer.setBackgroundColor(context.getResources().getColor(R.color.main_color));

        SupportMapFragment supportMapFragment =  SupportMapFragment.newInstance();
        supportFragment.beginTransaction().replace(R.id.map_container, supportMapFragment).commit();

    } else {
        resetUI(viewHolder);

        setViewVisibility(viewHolder.textMessageView, View.VISIBLE);
        viewHolder.messageTextView.setText(combinationMessage.getBody());
        viewHolder.timeTextMessageTextView.setText(DateUtils.formatDateSimpleTime(combinationMessage.getCreatedDate()));

        if (ownMessage && combinationMessage.getState() != null) {
            setMessageStatus(viewHolder.messageDeliveryStatusImageView, State.DELIVERED.equals(
                    combinationMessage.getState()), State.READ.equals(combinationMessage.getState()));
        } else if (ownMessage && combinationMessage.getState() == null) {
            //viewHolder.messageDeliveryStatusImageView.setImageResource(android.R.color.transparent);
        }
    }


    if (!State.READ.equals(combinationMessage.getState()) && !ownMessage && baseActivity.isNetworkAvailable()) {
        combinationMessage.setState(State.READ);
        QBUpdateStatusMessageCommand.start(baseActivity, ChatUtils.createQBDialogFromLocalDialog(dataManager, dialog), combinationMessage, true);
    }

    // check if last messageCombination is request messageCombination
    boolean lastRequestMessage = (position == getAllItems().size() - 1 && friendsRequestMessage);
    if (lastRequestMessage) {
        findLastFriendsRequest();
    }

    // check if friend was rejected/deleted.
    if (lastRequestPosition != EMPTY_POSITION && lastRequestPosition < lastInfoRequestPosition) {
        lastRequestPosition = EMPTY_POSITION;
    } else if ((lastRequestPosition != EMPTY_POSITION && lastRequestPosition == position)) { // set visible friends actions
        setVisibilityFriendsActions(viewHolder, View.VISIBLE);
        initListeners(viewHolder, position, combinationMessage.getDialogOccupant().getUser().getUserId());
    }
}

@Override
public int getItemViewType(int position) {
    return getItemViewType(getItem(position));
}

public void clearLastRequestMessagePosition() {
    lastRequestPosition = EMPTY_POSITION;
}

public void findLastFriendsRequestMessagesPosition() {
    new FindLastFriendsRequestThread().run();
}

private void setVisibilityFriendsActions(ViewHolder viewHolder, int visibility) {
    setViewVisibility(viewHolder.acceptFriendImageView, visibility);
    setViewVisibility(viewHolder.dividerView, visibility);
    setViewVisibility(viewHolder.rejectFriendImageView, visibility);
}

private void initListeners(ViewHolder viewHolder, final int position, final int userId) {
    viewHolder.acceptFriendImageView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            friendOperationListener.onAcceptUserClicked(position, userId);
        }
    });

    viewHolder.rejectFriendImageView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            friendOperationListener.onRejectUserClicked(position, userId);
        }
    });
}

private void findLastFriendsRequest() {
    for (int i = 0; i < getAllItems().size(); i++) {
        findLastFriendsRequest(i, getAllItems().get(i));
    }
}

private void findLastFriendsRequest(int position, CombinationMessage combinationMessage) {
    boolean ownMessage;
    boolean friendsRequestMessage;
    boolean isFriend;

    if (combinationMessage.getNotificationType() != null) {
        ownMessage = !combinationMessage.isIncoming(currentUser.getId());
        friendsRequestMessage = DialogNotification.Type.FRIENDS_REQUEST.equals(
                combinationMessage.getNotificationType());

        if (friendsRequestMessage && !ownMessage) {
            isFriend = dataManager.getFriendDataManager().
                    getByUserId(combinationMessage.getDialogOccupant().getUser().getUserId()) != null;
            if (!isFriend) {
                lastRequestPosition = position;
            }
        }
    }
}

@Override
public void onMapReady(GoogleMap googleMap) {
    LatLng sydney = new LatLng(-33.867, 151.206);

    if (ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
        // TODO: Consider calling
        //    ActivityCompat#requestPermissions
        // here to request the missing permissions, and then overriding
        //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
        //                                          int[] grantResults)
        // to handle the case where the user grants the permission. See the documentation
        // for ActivityCompat#requestPermissions for more details.
        return;
    }
    googleMap.setMyLocationEnabled(true);
    googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(sydney, 13));

    googleMap.addMarker(new MarkerOptions()
            .title("Sydney")
            .snippet("The most populous city in Australia.")
            .position(sydney));
}

private class FindLastFriendsRequestThread extends Thread {

    @Override
    public void run() {
        findLastFriendsRequest();
    }
}
}

XML布局

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:animateLayoutChanges="true"
android:orientation="horizontal"
android:padding="10dp">

<LinearLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="right"
    android:orientation="vertical">

    <include layout="@layout/view_chat_progress_bars" />

    <include layout="@layout/view_chat_text_message_own" />

    <include layout="@layout/view_chat_attach_message_own" />

    <include layout="@layout/view_location_message_own" />

</LinearLayout>



</FrameLayout>

XML布局二

<FrameLayout android:layout_height="100dp"
android:layout_width="100dp"
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/view_location_message_own"
android:background="@color/red">

<FrameLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/map_container" />


</FrameLayout>

Answer 1

我只观察一个纬度＆amp;经度值你正在应用＆amp;通过getitem应用项目位置它只显示您当前的回收站位置将加载，这将需要更多时间来加载所有列表。

@覆盖

public int getItemViewType（int position）{

return getItemViewType(getItem(position));

}

所以试试这个。

@覆盖

public int getItemViewType（int position）{

if（objectsList！= null＆amp;＆amp; objectsList.size（）＆gt; 0）{

return objectsList.size();

}

否则 {

  return null;

 }

}

在android回收视图中添加谷歌支持地图片段有问题

1 个答案: