Custom maps marker point with picasso not loaded

问题

I'm implementing android Mapview with Custom marker. I'm using picasso to load image into marker view. But the maps not shows me the marker that i needed.

Here's my code

i = getIntent();
    if(i.getBooleanExtra("maps", true)) {
        mactionBar.setSubtitle(i.getStringExtra("nama"));
        mMyMarkersArray.add(new MyMarker(i.getStringExtra("nama"), i.getStringExtra("deskripsi"), i.getStringExtra("foto"), i.getStringExtra("marker"), Double.parseDouble(i.getStringExtra("lat")), Double.parseDouble(i.getStringExtra("lng"))));
        plotMarkers(mMyMarkersArray);
    }

Here the code to load image marker. I'm implementing if(i.getBooleanExtra("maps", true)) because there are two activities that lead to this mapsview. If the previous activity put a true value, then it will bring just one marker data. But if the value is false, it will bring all markers data. The mapsview shows me all the markers that i needed if it got from the previous activity that bring false value. But the mapsview not shows me a marker if it got from the activity that bring the true value.

public void plotMarkers(ArrayList<MyMarker> markers) {
    if(markers.size() > 0) {
        for (MyMarker myMarker : markers)
        {
            markerOption = new MarkerOptions().position(new LatLng(myMarker.getmLatitude(), myMarker.getmLongitude()));
            location_marker = mMap.addMarker(markerOption);
            Target target = new PicassoMarker(location_marker);
            targets.add(target);
            Picasso.with(MapsActivity.this).load(myMarker.getmIcon()).resize(84, 125).into(target);
            mMarkersHashMap.put(location_marker, myMarker);

            i = getIntent();
            if(i.getBooleanExtra("maps", true)) {
                buttonNavigasi.setVisibility(View.VISIBLE);

                location_marker.setTitle(i.getStringExtra("nama"));
                dest = new LatLng(myMarker.getmLatitude(), myMarker.getmLongitude());
                mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(dest, 16));
            }
            else {
                mMap.setInfoWindowAdapter(new MarkerInfoWindowAdapter());
            }
        }
    }
}

Here's the the code on how i call the MapsActivity

buttonNavigasi = (AppCompatButton) findViewById(R.id.button2);
    buttonNavigasi.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent i = new Intent(DetailActivity.this,MapsActivity.class);
            i.putExtra("nama", daftarNama);
            i.putExtra("deskripsi", daftarDeskripsi);
            i.putExtra("foto", daftarFoto);
            i.putExtra("marker", daftarMarker);
            i.putExtra("lng", daftarLng);
            i.putExtra("lat", daftarLat);
            i.putExtra("maps", true);
            startActivity(i);
        }
    });

Here's the method of plotMarkers

public void plotMarkers(ArrayList<MyMarker> markers) {
    if(markers.size() > 0) {
        for (MyMarker myMarker : markers)
        {
            markerOption = new MarkerOptions().position(new LatLng(myMarker.getmLatitude(), myMarker.getmLongitude()));
            location_marker = mMap.addMarker(markerOption);
            Target target = new PicassoMarker(location_marker);
            targets.add(target);
            Picasso.with(MapsActivity.this).load(myMarker.getmIcon()).resize(84, 125).into(target);
            mMarkersHashMap.put(location_marker, myMarker);

            i = getIntent();
            if(i.getBooleanExtra("maps", true)) {
                buttonNavigasi.setVisibility(View.VISIBLE);

                location_marker.setTitle(i.getStringExtra("nama"));
                dest = new LatLng(myMarker.getmLatitude(), myMarker.getmLongitude());
                mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(dest, 16));
            }
            else {
                mMap.setInfoWindowAdapter(new MarkerInfoWindowAdapter());
            }
        }
    }
}

PicassoMarker class

public class PicassoMarker implements Target {
Marker mMarker;

    PicassoMarker(Marker marker) {
        mMarker = marker;
    }

    @Override
    public int hashCode() {
        return mMarker.hashCode();
    }

    @Override
    public boolean equals(Object o) {
        if(o instanceof PicassoMarker) {
            Marker marker = ((PicassoMarker) o).mMarker;
            return mMarker.equals(marker);
        } else {
            return false;
        }
    }

    @Override
    public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
       mMarker.setIcon(BitmapDescriptorFactory.fromBitmap(bitmap));
    }

    @Override
    public void onBitmapFailed(Drawable errorDrawable) {
    }

    @Override
    public void onPrepareLoad(Drawable placeHolderDrawable) {
    }
}

What's wrong here?

Thanks.

回答1:

I use Handler to show the markers with some delay. So i change my code like this

i = getIntent();
if(i.getBooleanExtra("maps", true)) {
    ActionBar mactionBar = getSupportActionBar();
    mactionBar.setSubtitle(i.getStringExtra("nama"));
    buttonNavigasi.setVisibility(View.VISIBLE);
    mMyMarkersArray.add(new MyMarker(i.getStringExtra("nama"), i.getStringExtra("deskripsi"), i.getStringExtra("foto"), i.getStringExtra("marker"), Double.parseDouble(i.getStringExtra("lat")), Double.parseDouble(i.getStringExtra("lng"))));

    Handler UI_HANDLER = new Handler();
    UI_HANDLER.postDelayed(UI_UPDATE_RUNNABLE, 500);
}

And this

Runnable UI_UPDATE_RUNNABLE = new Runnable() {
    @Override
    public void run() {
        plotMarkers(mMyMarkersArray);
    }
};

来源：https://stackoverflow.com/questions/36134197/custom-maps-marker-point-with-picasso-not-loaded