android - 自定义 InfowindowAdapter 以添加来自 Content provider 的图像

Question

我有一个在 map 上显示带有标记的地点的应用程序，我自定义了信息窗口以显示创建的地点的内容、标题、描述和图片，这些数据是通过内容提供商访问的，我的问题一切顺利直到我从数据库中删除一条记录，应用程序才会发疯，或者坏了，或者只是奇怪地识别记录 ID 等等问题显然出在 infowindow 代码自定义中，因为删除它一切正常，创建、删除、创建标记等 .. 但即使我尝试过也没有给出错误。

hell 代码:

class MyInfoWindowAdapter implements InfoWindowAdapter {

    View v;

    MyInfoWindowAdapter() {
        v = getLayoutInflater().inflate(R.layout.custom_info, null);

    }

    @SuppressWarnings("deprecation")
    @Override
    public View getInfoWindow(final Marker marker) {

        MapaLugaresActivity.this.marker = marker;

        c.requery();

        TextView tvTitulo = (TextView) v.findViewById(R.id.tituloi);
        tvTitulo.setText(marker.getTitle());
        // TextView tvDescr = (TextView) v.findViewById(R.id.descripcioni);
        // tvDescr.setText(marker.getSnippet());
        ImageView imgi = (ImageView) v.findViewById(R.id.imgi);

        if (marker.getSnippet() != null && marker != null
                && c.getCount() > 0) {

            try {

                if (c.moveToFirst()) {

                    c.moveToPosition(Integer.valueOf(marker.getSnippet()) - 1);

                    String img = c.getString(c.getColumnIndex("foto"));

                    if (img != null) {

                        resizedBitmap = DecodeImagen
                                .decodeSampledBitmapFromFile(img, 100, 100);
                        imgi.setAdjustViewBounds(true);
                        imgi.setImageBitmap(resizedBitmap);

                    } else {

                        imgi.setAdjustViewBounds(true);
                        imgi.setImageResource(R.drawable.paisaje);

                    }

                }
            } catch (NumberFormatException e) {

                e.printStackTrace();
            }

        }
        // imgi.setImageResource(R.drawable.rdlv);

        Typeface fuente = Typeface.createFromAsset(getAssets(),
                "TravelingTypewriter.ttf");

        tvTitulo.setTypeface(fuente);
        // tvDescr.setTypeface(fuente);

        return v;

    }

    @Override
    public View getInfoContents(Marker marker) {
        if (MapaLugaresActivity.this.marker != null
                && MapaLugaresActivity.this.marker.isInfoWindowShown()) {
            MapaLugaresActivity.this.marker.hideInfoWindow();
            MapaLugaresActivity.this.marker.showInfoWindow();
        }

        return null;
    }

}

添加标记:

                 @SuppressWarnings("deprecation")
public void addMarker() {

    map.clear();
    c.requery();

    if (c.getCount() > 0) {

        c.moveToFirst();

        do {

            latlong = new LatLng(c.getFloat(c.getColumnIndex("latitud")),
                    c.getFloat(c.getColumnIndex("longitud")));
            final MarkerOptions marker = new MarkerOptions().title(c
                    .getString(c.getColumnIndex("titulo")));
            marker.snippet(c.getString(c.getColumnIndex("_id")));

            marker.position(latlong);

            map.addMarker(marker).showInfoWindow();

        } while (c.moveToNext());

    } else {
        Toast.makeText(MapaLugaresActivity.this, "Añada un nuevo lugar",
                Toast.LENGTH_SHORT).show();
    }

}

我提前感谢您的帮助，花了几天时间试图找到解决方案，我认为是时候寻求帮助了，谢谢。本人编程经验有限，望谅解

PS:项目我已经上传到GitHub上了，方便大家分析:D

Activity MapaLugaresActivity中的代码

https://github.com/Shochlves/rdlv

图像信息窗口:

https://lh5.ggpht.com/eBgrw0riQxfGph4FhxXvMRDxzYjlvdWw6L6qRqg_L1oV9yPGHPW9wV2Cal7zVGj1-HY=h900-rw

Answer 1

解决了!该解决方案已实现 Hastable ( http://developer.android.com/reference/java/util/Hashtable.html )，我点击了代码，因为它很有帮助。带有来自 SQLite(内容提供者)的图像和标题的 InfoWindowAdapter

信息窗口适配器:

public class MyInfoWindowAdapter implements InfoWindowAdapter {



    private View v;

    MyInfoWindowAdapter() {
        v = getLayoutInflater().inflate(R.layout.custom_info, null);

    }
    @Override
    public View getInfoContents(Marker marker) {
        if (MapaLugaresActivity.this.marker != null
                && MapaLugaresActivity.this.marker.isInfoWindowShown()) {
            MapaLugaresActivity.this.marker.hideInfoWindow();
            MapaLugaresActivity.this.marker.showInfoWindow();
        }

        return null;
    }

    @Override
    public View getInfoWindow(Marker marker) {

        MapaLugaresActivity.this.marker = marker;
        String img = null;

         if (marker.getId() != null && markers != null && markers.size() > 0) {
                if ( markers.get(marker.getId()) != null &&
                        markers.get(marker.getId()) != null) {
                    img = markers.get(marker.getId());
                }
            }
        final ImageView imgi = (ImageView) v.findViewById(R.id.imgi);

        if (img != null && !img.equalsIgnoreCase("null")
                && !img.equalsIgnoreCase("")) {

            Bitmap resizedBitmap = DecodeImagen
                    .decodeSampledBitmapFromFile(img, 100, 100);

            imgi.setImageBitmap(resizedBitmap);

        } else {
            imgi.setAdjustViewBounds(true);
            imgi.setImageResource(R.drawable.paisaje);
        }


        TextView tvTitulo = (TextView) v.findViewById(R.id.tituloi);
        tvTitulo.setText(marker.getTitle());
        //TextView tvDescr = (TextView) v.findViewById(R.id.descripcioni);
        //tvDescr.setText(marker.getSnippet());



        Typeface fuente = Typeface.createFromAsset(getAssets(),
                "TravelingTypewriter.ttf");

        tvTitulo.setTypeface(fuente);
        // tvDescr.setTypeface(fuente);


        return v;

    }



}

添加标记:

public void addMarker() {

    markers = new Hashtable<String, String>();
    c.requery();

    if (c.getCount() > 0) {

        c.moveToFirst();

        do {


            latlong = new LatLng(c.getFloat(c.getColumnIndex("latitud")),
                    c.getFloat(c.getColumnIndex("longitud")));
            final Marker marker = map.addMarker(new MarkerOptions().title(c
                    .getString(c.getColumnIndex("titulo"))).snippet(c.getString(c.getColumnIndex("_id"))).position(latlong)); 

            markers.put(marker.getId(), c.getString(c.getColumnIndex("foto")));



        } while (c.moveToNext());

    } else {
        Toast.makeText(MapaLugaresActivity.this, "Añada un nuevo lugar",
                Toast.LENGTH_SHORT).show();
    }

}

创建时:

if (map != null) {
        map.setInfoWindowAdapter(new MyInfoWindowAdapter());

        addMarker();
    }

一句问候