这一直是最荒谬的事情。
我有一个包含重复自定义项目的RecyclerView。在这些项目中，有一些文本字段，按钮和一个MapView。
问题是，当列表加载时，MapView仅显示Google徽标，而不显示其他图块或细节（或标记）。但是，当我在地图上点击一次时，它会显示我添加的标记。在下一次点击时，它会加载像素化地图。在另一个点击，它加载更好的质量地图。进一步点击后，它会添加附近位置的文字标签。 LatLngBounds也不起作用，但这是次要问题。
为什么会这样？
我的代码如下：
JobAdapter.java
public class JobAdapter extends RecyclerView.Adapter<JobAdapter.ViewHolder>
{
private Context context;
private static List<Job> jobList;
private HashSet<MapView> mapViews = new HashSet<>();
private GoogleMap googleMap;
public JobAdapter(Context con, List<Job> jobs)
{
context = con;
jobList = jobs;
}
@Override
public int getItemCount()
{
return jobList.size();
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType)
{
Context context = parent.getContext();
LayoutInflater inflater = LayoutInflater.from(context);
View view = inflater.inflate(R.layout.listitem_booking, parent, false);
ViewHolder viewHolder = new ViewHolder(view);
mapViews.add(viewHolder.mapView);
return viewHolder;
}
@Override
public void onBindViewHolder(ViewHolder holder, int position)
{
Job job = jobList.get(position);
holder.mapView.setClickable(false);
if(job.getJobType().equalsIgnoreCase("Now"))
{
holder.pickup.setBackgroundColor(ContextCompat.getColor(context, R.color.lightRed));
}
holder.pickup.setText(job.getPickupAddress());
if(job.getDestinationAddress() != null && !job.getDestinationAddress().equalsIgnoreCase(""))
{
holder.destination.setText(job.getDestinationAddress());
}
else
{
holder.destination.setVisibility(View.GONE);
}
holder.person.setText(job.getContact());
holder.datetime.setText(job.getDate() + " at " + job.getTime());
}
class ViewHolder extends RecyclerView.ViewHolder implements /*View.OnClickListener,*/ OnMapReadyCallback
{
@BindView(R.id.pickup)
TextView pickup;
@BindView(R.id.destination)
TextView destination;
@BindView(R.id.person)
TextView person;
@BindView(R.id.datetime)
TextView datetime;
@BindView(R.id.map_listitem)
MapView mapView;
@BindView(R.id.acceptJob)
Button acceptJob;
@BindView(R.id.declineJob)
Button declineJob;
@BindView(R.id.buttonLayout)
LinearLayout buttonLayout;
private ViewHolder(View itemView)
{
super(itemView);
ButterKnife.bind(this, itemView);
// itemView.setOnClickListener(this);
mapView.onCreate(null);
mapView.getMapAsync(this);
}
private void addMarkers(Job job)
{
googleMap.clear();
boolean hasDestination = true;
String[] destinationLatlng = null;
LatLng destination = null;
if(job.getDestinationAddress() == null || job.getDestinationAddress().equalsIgnoreCase(""))
{
hasDestination = false;
}
else
{
destinationLatlng = job.getDestinationLatLong().split(",");
destination = new LatLng(Double.valueOf(destinationLatlng[0]), Double.parseDouble(destinationLatlng[1]));
}
final String[] pickupLatlng = job.getPickupLatLong().split(",");
final LatLng pickup = new LatLng(Double.valueOf(pickupLatlng[0]), Double.parseDouble(pickupLatlng[1]));
if(hasDestination)
{
googleMap.addMarker(new MarkerOptions()
.position(pickup)
.title(job.getPickupAddress()));
googleMap.addMarker(new MarkerOptions()
.position(destination)
.title(job.getDestinationAddress()));
LatLngBounds.Builder builder = new LatLngBounds.Builder();
builder.include(pickup);
builder.include(destination);
LatLngBounds bounds = builder.build();
CameraUpdate cameraUpdate = CameraUpdateFactory.newLatLngBounds(bounds, 5);
googleMap.animateCamera(cameraUpdate);
}
else
{
googleMap.addMarker(new MarkerOptions()
.position(pickup)
.title(job.getPickupAddress()));
CameraUpdate cameraUpdate = CameraUpdateFactory.newLatLngZoom(pickup, 15);
googleMap.animateCamera(cameraUpdate);
}
}
/*@Override
public void onClick(View view)
{
final Job job = jobList.get(getAdapterPosition());
}*/
@Override
public void onMapReady(GoogleMap gMap)
{
googleMap = gMap;
addMarkers(jobList.get(getAdapterPosition()));
}
}
}
listitem_booking
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:map="http://schemas.android.com/tools"
android:orientation="vertical"
app:cardElevation="2dp"
android:layout_marginBottom="8dp"
android:layout_marginStart="8dp"
android:layout_marginEnd="8dp">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="@+id/pickup"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingStart="4dp"
android:paddingEnd="4dp"
android:paddingTop="2dp"
android:paddingBottom="2dp"
android:textSize="16sp"
android:text="Complex"
android:background="@color/lessLightGreen"
android:gravity="center_vertical"
android:drawableStart="@drawable/google_maps"
android:drawablePadding="2dp"
android:textColor="@color/colorPrimaryText"/>
<TextView
android:id="@+id/destination"
android:layout_below="@id/pickup"
android:text="Golra"
android:visibility="visible"
android:drawableStart="@drawable/directions"
android:drawablePadding="2dp"
style="@style/listitem_secondary_text"/>
<TextView
android:id="@+id/person"
android:drawablePadding="2dp"
android:layout_below="@id/destination"
android:text="Asfandyar Khan"
android:drawableStart="@drawable/account"
style="@style/listitem_secondary_text"/>
<TextView
android:id="@+id/datetime"
android:layout_below="@id/person"
android:text="7th April 2017 at 9:00am"
android:drawableStart="@drawable/time"
style="@style/listitem_secondary_text"/>
<com.google.android.gms.maps.MapView
android:id="@+id/map_listitem"
android:layout_width="match_parent"
android:layout_height="170dp"
android:layout_marginTop="2dp"
android:layout_below="@id/datetime"
map:liteMode="true"
android:padding="10dp"/>
<LinearLayout
android:id="@+id/buttonLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_below="@id/map_listitem"
android:gravity="end"
android:layout_margin="4dp">
<Button
android:backgroundTint="@color/colorPrimary"
android:textColor="@android:color/white"
android:id="@+id/acceptJob"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Accept"/>
<Button
android:backgroundTint="@color/darkRed"
android:textColor="@android:color/white"
android:id="@+id/declineJob"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Decline"/>
</LinearLayout>
</RelativeLayout>
</android.support.v7.widget.CardView>
我尝试了各种各样的事情，但似乎没有任何工作。
答案 0 :(得分：5)
尝试添加onResume，如下所示：
mapView.onCreate(null);
mapView.getMapAsync(this);
mapView.onResume();
修改
我刚刚注意到你正在使用
map:liteMode="true"
尝试删除它（至少要测试）或将以下内容添加到xml：
map:cameraZoom="15"
map:mapType="normal"
答案 1 :(得分：0)
您的代码中可能还有另一个问题。 “地图”应为： xmlns：map =“ http://schemas.android.com/apk/res-auto”