放大后Osmdroid离线模式更新砖 [英] Osmdroid offline mode update tiles after zoom
本文介绍了放大后Osmdroid离线模式更新砖的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我开发一个Android应用程序，使用Osmdroid显示在离线模式下的地图。我有一个问题，当我想放大或缩小按捏在地图上或使用内置的zoomcontrols。当我放大了地图图块并不总是正确的渲染，当我缩小了有时也有映射中的某些灰瓦，有时一切都变得确定。它没有相关的在地图上显示的位置。我的地图图块存储在osmdroid zip文件与Mapnik的源文件夹到/ mnt / SD卡/ osmdroid。我使用osmdroid-3.0.7。
I'm developing an Android app that uses Osmdroid to display the maps in offline mode. I have an issue when I want to zoom in or out by pinching on the map or using the build-in zoomcontrols. When I zoom in the map tiles are not always correctly rendered and when I zoom out the sometimes there are some gray tiles in the map, sometimes everything is rendered OK. It's not related on the location displayed on the map. My map tiles are stored in an osmdroid zip-file with the Mapnik source in the folder /mnt/sdcard/osmdroid. I'm using osmdroid-3.0.7.
因此，任何帮助是值得欢迎的。
So, any help is welcome.
请参阅我下面的code（我包括在这里的code不包括在内）：
See my code below (my includes aren't included here in the code):
public class MapActivity extends OSMapActivity {
private ArrayList<String[]> mapPointData;
private ArrayList<String[]> multiData;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
super.setContentView(R.layout.map);
setABTitle(getIntent().getExtras().getStringArray("geoLoc")[0]);
actionButtonVisible(getIntent().getExtras().getBoolean("routeList"));
initLayout();
setHomePoint();
}
@Override
protected void onResume() {
super.onResume();
Prefs.clearMapPrefs(this);
}
private void initLayout() {
c = this;
// Buttons @ top of the activity
doseeBN = (ImageView) findViewById(R.id.mapDoseeBN);
eatdrinkBN = (ImageView) findViewById(R.id.mapEatdrinkBN);
nightlifeBN = (ImageView) findViewById(R.id.mapNightlifeBN);
sleepBN = (ImageView) findViewById(R.id.mapSleepBN);
// The LinearLayout with the ScrollView for the Subcategories in "Do & See"
doseeLL = (LinearLayout) findViewById(R.id.doseeSubCatLL);
top10BN = (Button) findViewById(R.id.mapDoseeTop10BN);
monumentsBN = (Button) findViewById(R.id.mapDoseeMonumentsBN);
museumBN = (Button) findViewById(R.id.mapDoseeMuseumsBN);
cultureBN = (Button) findViewById(R.id.mapDoseeCultureBN);
attractionsBN = (Button) findViewById(R.id.mapDoseeAttractionBN);
shoppingBN = (Button) findViewById(R.id.mapDoseeShoppingBN);
marketBN = (Button) findViewById(R.id.mapDoseeMarketBN);
// Init of the map an mapcontroller
mapView = (MapView) findViewById(R.id.osmMV);
mapView.setTileSource(TileSourceFactory.MAPNIK);
mapController = mapView.getController();
mapController.setZoom(16);
mapView.setUseDataConnection(false);
mapView.setBuiltInZoomControls(true);
mapView.setMultiTouchControls(true);
// mapView.setDrawingCacheEnabled(true);
mapData = new ArrayList<String[]>();
mapPointData = new ArrayList<String[]>();
multiData = new ArrayList<String[]>();
}
private void setHomePoint() {
//GeoPoint centerPt = new GeoPoint(50.89489, 4.34140); // Point of Grand Place Brussels
homeLat = Double.parseDouble(getIntent().getExtras().getStringArray("geoLoc")[1]);
homeLong = Double.parseDouble(getIntent().getExtras().getStringArray("geoLoc")[2]);
GeoPoint centerPt = new GeoPoint(homeLat, homeLong);
if (checkMapRange(Double.parseDouble(getIntent().getExtras().getStringArray("geoLoc")[1]),
Double.parseDouble(getIntent().getExtras().getStringArray("geoLoc")[2]))) {
mapController.setCenter(centerPt);
Drawable marker = getResources().getDrawable(R.drawable.ic_pin_marker);
ArrayList<OverlayItem> items = new ArrayList<OverlayItem>();
items.add(new OverlayItem("Here I am!", "Hello", centerPt));
ItemizedOverlay<OverlayItem> itemOverlay =
new ItemizedIconOverlay<OverlayItem>(items, marker, null, new DefaultResourceProxyImpl(this));
mapView.getOverlays().add(itemOverlay);
mapView.invalidate();
} else {
mapController.setCenter(new GeoPoint(50.89489, 4.34140));
mapController.setZoom(11);
Action.alert(this, getResources().getString(R.string.alert_title_notinregion),
getResources().getString(R.string.alert_message_notinregion), false);
mapView.setClickable(false);
}
}
public void onClickMapPointsBN(View v) {
switch(v.getId()) {
case R.id.mapDoseeBN:
setPrefsCategory("DOSEE", doseeBN, "btn_map_dosee", "btn_map_dosee_pressed");
break;
case R.id.mapEatdrinkBN:
setPrefsCategory("EATDRINK", eatdrinkBN, "btn_map_eatdrink", "btn_map_eatdrink_pressed");
break;
case R.id.mapNightlifeBN:
setPrefsCategory("NIGHTLIFE", nightlifeBN, "btn_map_nightlife", "btn_map_nightlife_pressed");
break;
case R.id.mapSleepBN:
setPrefsCategory("SLEEP", sleepBN, "btn_map_sleep", "btn_map_sleep_pressed");
break;
}
setPOIs();
}
public void onClickDoseeListBN(View v) {
switch (v.getId()) {
case R.id.mapDoseeTop10BN:
setDosseSubCat(Definitions.doseeList[0], top10BN);
break;
case R.id.mapDoseeMuseumsBN:
setDosseSubCat(Definitions.doseeList[2], museumBN);
break;
case R.id.mapDoseeCultureBN:
setDosseSubCat(Definitions.doseeList[3], cultureBN);
break;
case R.id.mapDoseeAttractionBN:
setDosseSubCat(Definitions.doseeList[4], attractionsBN);
break;
case R.id.mapDoseeShoppingBN:
setDosseSubCat(Definitions.doseeList[5], shoppingBN);
break;
case R.id.mapDoseeMarketBN:
setDosseSubCat(Definitions.doseeList[6], marketBN);
break;
default:
setDosseSubCat(Definitions.doseeList[1], monumentsBN);
break;
}
setPOIs();
}
private void setPrefsCategory(String cat, ImageView btn, String image, String imageSelected) {
boolean sel = Prefs.getBoolean(this, "map" + cat, false);
Prefs.setBoolean(this, "map" + cat, !sel);
setCategoryImage(btn, image, imageSelected, sel);
if (cat.equalsIgnoreCase("DOSEE")) {
if (sel) {
doseeLL.setVisibility(View.GONE);
} else {
doseeLL.setVisibility(View.VISIBLE);
for (String s : Definitions.doseeList) {
if (s.equals(Definitions.doseeList[1])) {
Prefs.setBoolean(this, "mapDS_" + s, true);
} else {
Prefs.setBoolean(this, "mapDS_" + s, false);
}
}
}
setSubcategoryColor(sel);
}
}
private void setCategoryImage(ImageView btn, String image, String imageSelected, boolean selected) {
String devLang = Prefs.getString(this, "devLanguage", "en");
if (!devLang.equalsIgnoreCase("en")) {
image += "_" + devLang;
imageSelected += "_" + devLang;
}
if (selected) {
btn.setImageResource(this.getResources().getIdentifier(image, "drawable", getPackageName()));
} else {
btn.setImageResource(this.getResources().getIdentifier(imageSelected, "drawable", getPackageName()));
}
}
private void setSubcategoryColor(boolean doseeSelected) {
setDoseeSubCatTextColor(true, top10BN);
setDoseeSubCatTextColor(doseeSelected, monumentsBN);
setDoseeSubCatTextColor(true, museumBN);
setDoseeSubCatTextColor(true, cultureBN);
setDoseeSubCatTextColor(true, attractionsBN);
setDoseeSubCatTextColor(true, shoppingBN);
setDoseeSubCatTextColor(true, marketBN);
}
private void setPOIs() {
mapView.getOverlays().clear();
mapView.invalidate();
mapData.clear();
setHomePoint();
boolean selected;
for (String category : Definitions.categoryList) {
selected = Prefs.getBoolean(this, "map" + category, false);
Log.d("VB.Map", "Category: " + category + " selected: " + selected);
if (selected) {
if (category.equalsIgnoreCase("DOSEE")) {
boolean subSelected;
for (String subcategory : Definitions.doseeList) {
subSelected = Prefs.getBoolean(this, "mapDS_" + subcategory, false);
if (subSelected) {
getSqlData(category, subcategory);
}
}
} else {
getSqlData(category, null);
}
}
}
removeMapDataItems();
//mapPointData = mapData;
//multiDataLocationSelector();
setMapDataPoints();
//setMultiMapPoints();
}
private void getSqlData(String category, String subCategory) {
ArrayList<String[]> sqlData = SqlDB.db.getCategoryItems(Adjust.rewriteCategoryName(category), subCategory);
for (String[] data : sqlData) {
mapData.add(data);
}
}
private void removeMapDataItems() {
for (int i = 0; i < mapData.size(); i++) {
if ((mapData.get(i)[13].equalsIgnoreCase("")) || (mapData.get(i)[14].equalsIgnoreCase(""))) {
mapData.remove(i);
i--;
}
}
}
private void setDosseSubCat(String subCat, Button btn) {
boolean selected = Prefs.getBoolean(this, "mapDS_" + subCat, false);
Prefs.setBoolean(this, "mapDS_" + subCat, !selected);
setDoseeSubCatTextColor(selected, btn);
}
private void setDoseeSubCatTextColor(boolean selected, Button btn) {
if (selected) {
btn.setTextColor(Definitions.colorDoseeSubcat);
} else {
btn.setTextColor(Definitions.colorDoseeSubcatSelected);
}
}
private void setMapDataPoints() {
if (mapData != null) {
ArrayList<OverlayItem> mapOverlays = new ArrayList<OverlayItem>();
OverlayItem overlayItem;
for (String[] item : mapData) {
multiData.add(item);
if (existsInOverlayItems(item, mapOverlays)) {
overlayItem = new OverlayItem("-1", "", new GeoPoint(Float.parseFloat(item[13]), Float.parseFloat(item[14])));
overlayItem.setMarker(getResources().getDrawable(R.drawable.ic_pin_multiple));
} else {
overlayItem = new OverlayItem(item[0], "", new GeoPoint(Float.parseFloat(item[13]), Float.parseFloat(item[14])));
overlayItem.setMarker(getResources().getDrawable(getResources().getIdentifier(item[15], "drawable", getPackageName())));
}
mapOverlays.add(overlayItem);
}
setMapOverlays(mapOverlays);
}
}
private boolean existsInOverlayItems(String[] item, ArrayList<OverlayItem> overlayItemList) {
for (int i = 0; i < overlayItemList.size(); i++) {
if ((new GeoPoint(Double.parseDouble(item[13]), Double.parseDouble(item[14]))).equals(overlayItemList.get(i).mGeoPoint)) {
overlayItemList.remove(i);
return true;
}
}
return false;
}
private void setMapOverlays(ArrayList<OverlayItem> overlays) {
ItemizedOverlay<OverlayItem> itemOverlays = new ItemizedIconOverlay<OverlayItem>(
overlays, getResources().getDrawable(R.drawable.ic_pin_marker), new ItemizedIconOverlay.OnItemGestureListener<OverlayItem>() {
public boolean onItemLongPress(int arg0, OverlayItem item) {
mapOverlayItemPressed(Integer.parseInt(item.mTitle), item);
return false;
}
public boolean onItemSingleTapUp(int arg0, OverlayItem item) {
mapOverlayItemPressed(Integer.parseInt(item.mTitle), item);
return false;
}
}, new DefaultResourceProxyImpl(this));
mapView.getOverlays().add(itemOverlays);
mapView.invalidate();
}
private void mapOverlayItemPressed(int itemId, OverlayItem overlayItem) {
if (itemId == -1) {
Collect.multiPOIList.clear();
for (String[] item : multiData) {
if ((new GeoPoint(Double.parseDouble(item[13]), Double.parseDouble(item[14]))).equals(overlayItem.mGeoPoint)) {
Collect.multiPOIList.add(item);
}
}
Action.alertWithListView(this, getResources().getString(R.string.alert_title_multiplepoi), false);
} else {
SqlDB.db.getItemsById(itemId);
Bundle b = new Bundle();
b.putInt("listSelection", 0);
Action.newIntent(c, DetailActivity.class, b);
}
}
private boolean checkMapRange(double lat, double lng) {
double mapLatMax = 50.922085;
double mapLatMin = 50.781631;
double mapLongMin = 4.240723;
double mapLongMax = 4.490662;
if ((lat > mapLatMin) && (lat < mapLatMax)) {
if ((lng > mapLongMin) && (lng < mapLongMax)) {
return true;
}
}
return false;
}
}
和这里OSMapActivity的code：
And here the code of the OSMapActivity:
public class OSMapActivity extends ActionbarActivity {
protected Context c;
protected MapView mapView;
protected MapController mapController;
protected ArrayList<String[]> mapData;
protected ImageView doseeBN;
protected ImageView eatdrinkBN;
protected ImageView nightlifeBN;
protected ImageView sleepBN;
protected LinearLayout doseeLL;
protected Button top10BN;
protected Button monumentsBN;
protected Button museumBN;
protected Button cultureBN;
protected Button attractionsBN;
protected Button shoppingBN;
protected Button marketBN;
protected double homeLat;
protected double homeLong;
public void onClickABActionButton(View v) {
boolean actionButton = Prefs.getBoolean(this, "abActionButtonRoute", false);
if (actionButton) {
// TODO Add with current location => location manager in separate class
/*GPS.init(this);
GPS.enableGPSProvider();
GPS.enableNetworkProvider();
//Action.loadApp(this, Intent.ACTION_VIEW, Uri.parse("geo:50.89489,4.34140?daddr=Heiveld+21+Opwijk"));
Action.loadApp(this, Intent.ACTION_VIEW, Uri.parse("http://maps.google.com/maps?saddr=" + GPS.latitude + "," + GPS.longitude
+ "&daddr=Heiveld+21+1745+Opwijk"));
GPS.stop();*/
Action.loadMapsWithMyLocation(this, homeLat, homeLong);
} else {
Collect.dbList.clear();
for (String[] data : mapData) {
Collect.dbList.add(data);
}
// TODO Load new intent with list
Action.newIntent(this, MapListActivity.class, null);
}
}
}
感谢您的帮助。
氪
推荐答案
我提出的一个的问题上的3.0.6版本这个。在评论的作者说，它是固定在2月1日。随着3.0.7罐子的日期是1月29日，我假设的解决方法是不是在里面。我会继续使用3.0.5版本就目前而言，虽然循环地图，它不工作，瓦负载可有点flickery。如果你的地图是离线虽然，他们应该载入pretty的快速闪烁可能不是一个问题。
I raised an issue on version 3.0.6 about this. In the comments the authors say it was fixed on Feb 1st. As the 3.0.7 jar is dated Jan 29, I assume the fix isn't in it. I'm sticking with version 3.0.5 for now, although the cycle maps don't work in it and the tile loading can be a bit flickery. If your maps are offline though, they should load pretty fast and flicker might not be an issue.
这篇关于放大后Osmdroid离线模式更新砖的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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