Question

我正在从布局文件创建自定义标记图像并使用该文件中的图像。我使用Picasso在图像视图上设置图像，这是第一次不起作用，但第二次工作，图像加载成功。我已经阅读了Piccaso所持有的弱引用，并尝试了在各种堆栈溢出帖子中给出的解决方案，但似乎都没有。分享我的代码，任何帮助将不胜感激。

//adding marker method

 protected Marker createMarker(double latitude, double longitude,String markerText,String imageUrl) {

        Log.e("Adding","Marker");
        LatLng marker = new LatLng(latitude, longitude);
        CameraPosition cameraPosition = new CameraPosition.Builder().target(marker).zoom(16).build();
        googleMap.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition));
        return googleMap.addMarker(new MarkerOptions()
                .position(new LatLng(latitude, longitude))
                .title(markerText)
                .snippet("Salesman Info").icon(BitmapDescriptorFactory.fromBitmap(getMarkerBitmapFromView(markerText,imageUrl))));
    }


// making drawable from layout file

 private Bitmap getMarkerBitmapFromView(String markerText,String imageUrl) {

        View customMarkerView = ((LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate(R.layout.custom_marker, null);
        final ImageView markerImageView = (ImageView) customMarkerView.findViewById(R.id.profile_image);
        TextView markerTextView = (TextView)customMarkerView.findViewById(R.id.marker_text);
        markerTextView.setText(markerText);


        final Target target = new Target() {
            @Override
            public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
                markerImageView.setImageBitmap(bitmap);
                Log.e("Loading marker","Image loaded");
            }

            @Override
            public void onBitmapFailed(Drawable errorDrawable) {
                Log.e("Loading marker","Image failed");
            }

            @Override
            public void onPrepareLoad(Drawable placeHolderDrawable) {
                Log.e("Loading marker","Image prepared");
            }
        };

        markerImageView.setTag(target);

        Picasso.with(getContext())
                .load(imageUrl)
                .into(target);


        customMarkerView.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);
        customMarkerView.layout(0, 0, customMarkerView.getMeasuredWidth(), customMarkerView.getMeasuredHeight());
        customMarkerView.buildDrawingCache();
        Bitmap returnedBitmap = Bitmap.createBitmap(customMarkerView.getMeasuredWidth(), customMarkerView.getMeasuredHeight(),
                Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(returnedBitmap);
        canvas.drawColor(Color.WHITE, PorterDuff.Mode.SRC_IN);
        Drawable drawable = customMarkerView.getBackground();
        if (drawable != null)
            drawable.draw(canvas);
        customMarkerView.draw(canvas);
        return returnedBitmap;
    }

Answer 1

我通过使用带有简单目标选项的Glide库解决了这个问题。

Glide.with(getContext())
                .asBitmap()
                .load("imageurl")
                .into(new SimpleTarget<Bitmap>() {
                    @Override
                    public void onLoadFailed(@Nullable Drawable errorDrawable) {
                        Marker m =googleMap.addMarker(new MarkerOptions()
                                .position(new LatLng(latitude, longitude))
                                .title(markerText)
                                .snippet("").icon(BitmapDescriptorFactory.fromBitmap(getMarkerBitmapFromView(markerText,null,mCustomMarkerView))));
                        m.setTag(info);
                        super.onLoadFailed(errorDrawable);
                    }

                    @Override
                    public void onResourceReady(Bitmap resource, Transition<? super Bitmap> transition) {
                        Marker m =googleMap.addMarker(new MarkerOptions()
                                .position(new LatLng(latitude, longitude))
                                .title(markerText)
                                .snippet("").icon(BitmapDescriptorFactory.fromBitmap(getMarkerBitmapFromView(markerText,resource,mCustomMarkerView))));
                        m.setTag(info);

                    }

                    }
                );

使用Picasso在地图标记上加载自定义图标不适用于第一次

1 个答案: