Question

我用自定义标记实现了android Mapview。我使用毕加索将图像加载到标记视图中。但是这些地图并没有向我展示我需要的标记。

这是我的代码

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);
    }

这里是加载图像标记的代码。我实施if(i.getBooleanExtra("maps", true))因为有两个活动导致了这个地图视图。如果前一个活动设置了一个真值，那么它只会带来一个标记数据。但如果值为false，则会带来所有标记数据。 mapsview显示了我从前一个带来虚假值的活动中获得的所有标记。但是如果mapview来自带来真正价值的活动，那么它就不会给我看一个标记。

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());
            }
        }
    }
}

以下是我如何调用MapsActivity的代码

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);
        }
    });

这是plotMarkers的方法

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课程

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) {
    }
}

这里有什么问题？

感谢。

Answer 1

我使用Handler来显示标记有一些延迟。所以我改变了我的代码

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);
}

这个

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

自定义地图标记点与毕加索未加载

1 个答案: