我在android中使用了二手map api v2。我可以使用地面覆盖在地图上加载图像，但图像显示的非常小。我需要在mapview上完整加载图片，例如覆盖整个地图区域。有人可以帮我这个.. Here is the image我想加载地图 谢谢你提前...
public class GroundOverlayDemoActivity extends FragmentActivity implements OnSeekBarChangeListener {
private static final int TRANSPARENCY_MAX = 100;
private static final LatLng NEWARK = new LatLng(40.714086, -74.228697);
//private static final LatLng NEWARK = new LatLng(18.5236, 73.8478);
private GoogleMap mMap;
private GroundOverlay mGroundOverlay;
private SeekBar mTransparencyBar;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.ground_overlay_demo);
mTransparencyBar = (SeekBar) findViewById(R.id.transparencySeekBar);
mTransparencyBar.setMax(TRANSPARENCY_MAX);
mTransparencyBar.setProgress(0);
setUpMapIfNeeded();
}
@Override
protected void onResume() {
super.onResume();
setUpMapIfNeeded();
}
private void setUpMapIfNeeded() {
if (mMap == null) {
mMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map))
.getMap();
if (mMap != null) {
setUpMap();
}
}
}
private void setUpMap() {
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(NEWARK, 8));
mGroundOverlay = mMap.addGroundOverlay(new GroundOverlayOptions().image(BitmapDescriptorFactory.fromResource(R.drawable.omnistar_hp)).anchor(0, 1).position(NEWARK, 8600000f, 6500000f));
//.position(NEWARK, 9999999.0f));//, 10000000f));
mTransparencyBar.setOnSeekBarChangeListener(this);
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {}
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
if (mGroundOverlay != null) {
mGroundOverlay.setTransparency((float) progress / (float) TRANSPARENCY_MAX);
}
}
}
答案 0 :(得分：1)
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.util.Log;
import android.util.TypedValue;
import android.view.Menu;
import android.view.MenuItem;
public class MapDisplayActivity extends FragmentActivity implements OnMapClickListener, OnMapLongClickListener {
private GoogleMap myMap;
private static LatLng SearchPlace;
double Latitude;
double Longitiude;
List<Address> addresses;
//Address location;
BitmapDescriptor image;
/// private static final LatLng NEWARK = new LatLng(18.5236, 73.8478);
private GroundOverlay mGroundOverlay;
//this is for omnistarg dont touch this
LatLng southwest= new LatLng(-85.513398,-178.242187);
LatLng northeast= new LatLng(85.513398,178.242187);
float zoomValue = 7.0f;
private String SpinerValue;
private Bitmap bitmap;
@Override
`enter code here`protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.mapactivity);
//VMRuntime.getRuntime().setMinimumHeapSize(4 * 1024 * 1024);
Log.v("Utils", "Max mem in MB : " + (Runtime.getRuntime().maxMemory()/(1024*1024)));
Runtime.getRuntime().maxMemory();
Debug.getNativeHeapSize();
initActionBar();
//textInfo=(TextView)findViewById(R.id.locinfo);
FragmentManager myFragmentManager = getSupportFragmentManager();
SupportMapFragment mySupportMapFragment
= (SupportMapFragment)myFragmentManager.findFragmentById(R.id.map);
myMap = mySupportMapFragment.getMap();
// myMap.setMyLocationEnabled(true);
// myMap.setMapType(GoogleMap.MAP_TYPE_HYBRID);
myMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
// myMap.setMapType(GoogleMap.MAP_TYPE_SATELLITE);
//myMap.setMapType(GoogleMap.MAP_TYPE_TERRAIN);
myMap.setOnMapClickListener(this);
myMap.setOnMapLongClickListener(this);
myMap.getUiSettings().setZoomControlsEnabled(true);
myMap.getUiSettings().setMyLocationButtonEnabled(true);
Intent intent=getIntent();
Latitude=intent.getDoubleExtra("Latitude", 0.000);
Longitiude=intent.getDoubleExtra("Longititude", 0.000);
SpinerValue=(String)intent.getStringExtra("SPINNERVALUE");
SearchPlace = new LatLng(Latitude, Longitiude);
myMap.moveCamera(CameraUpdateFactory.newLatLng(SearchPlace));
myMap.addMarker(new MarkerOptions().position(SearchPlace));//.title(PlaceName));
drawImageOverMap();
// BitmapFactory.Options opts=new BitmapFactory.Options();
// opts.inDither=false; //Disable Dithering mode
// opts.inPurgeable=true;
// opts.inSampleSize=8;
// Bitmap largeIcon = BitmapFactory.decodeResource(getResources(), R.drawable.omnistar_g);
}
public void drawImageOverMap(){
myMap.animateCamera(CameraUpdateFactory.zoomTo(zoomValue));
//image =BitmapDescriptorFactory.fromResource(R.drawable.omnistar_g);
if(SpinerValue.equalsIgnoreCase("TEC")){
//centerpoint_vrs
bitmap = (Bitmap)BitmapFactory.decodeResource(this.getResources(), R.drawable.omnistar_two);
BitmapFactory.Options o2 = new BitmapFactory.Options();
o2.inSampleSize=4;
image=BitmapDescriptorFactory.fromBitmap(bitmap);
LatLngBounds bounds =new LatLngBounds( southwest, northeast);
mGroundOverlay = myMap.addGroundOverlay(new GroundOverlayOptions()
.image(image)
//.transparency(0.4f)
//.anchor(0, 1)
.positionFromBounds(bounds));
}
else if(SpinerValue.equalsIgnoreCase("OmniSTARG2")){
bitmap = (Bitmap)BitmapFactory.decodeResource(this.getResources(), R.drawable.omnistar_g_img);
BitmapFactory.Options o2 = new BitmapFactory.Options();
o2.inSampleSize=4;
image=BitmapDescriptorFactory.fromBitmap(bitmap);
LatLngBounds bounds =new LatLngBounds( southwest, northeast);
mGroundOverlay = myMap.addGroundOverlay(new GroundOverlayOptions()
.image(image)
.transparency(0.4f)
//.anchor(0, 1)
.positionFromBounds(bounds));
}
else if(SpinerValue.equalsIgnoreCase("OmniStarHP")){
bitmap = (Bitmap)BitmapFactory.decodeResource(this.getResources(), R.drawable.omnistar_hp_two);
BitmapFactory.Options o2 = new BitmapFactory.Options();
o2.inSampleSize=4;
image=BitmapDescriptorFactory.fromBitmap(bitmap);
LatLngBounds bounds =new LatLngBounds( southwest, northeast);
mGroundOverlay = myMap.addGroundOverlay(new GroundOverlayOptions()
.image(image)
.transparency(0.4f)
//.anchor(0, 1)
.positionFromBounds(bounds));
}
/////////////////////////////////////////////
else if(SpinerValue.equalsIgnoreCase("OmniStarVBS")){
bitmap = (Bitmap)BitmapFactory.decodeResource(this.getResources(), R.drawable.omnistar_vbs_two);
BitmapFactory.Options o2 = new BitmapFactory.Options();
o2.inSampleSize=4;
image=BitmapDescriptorFactory.fromBitmap(bitmap);
LatLngBounds bounds =new LatLngBounds( southwest, northeast);
mGroundOverlay = myMap.addGroundOverlay(new GroundOverlayOptions()
.image(image)
.transparency(0.4f)
//.anchor(0, 1)
.positionFromBounds(bounds));
}
else if(SpinerValue.equalsIgnoreCase("OmniSTARXP")){
bitmap = (Bitmap)BitmapFactory.decodeResource(this.getResources(), R.drawable.omnistar_xp_two);
BitmapFactory.Options o2 = new BitmapFactory.Options();
o2.inSampleSize=4;
image=BitmapDescriptorFactory.fromBitmap(bitmap);
LatLngBounds bounds =new LatLngBounds( southwest, northeast);
mGroundOverlay = myMap.addGroundOverlay(new GroundOverlayOptions()
.image(image)
.transparency(0.4f)
//.anchor(0, 1)
.positionFromBounds(bounds));
}
else if(SpinerValue.equalsIgnoreCase("RTXStandardviaCellular")){
//rtxcell
bitmap = (Bitmap)BitmapFactory.decodeResource(this.getResources(), R.drawable.rtx_cell_two);
BitmapFactory.Options o2 = new BitmapFactory.Options();
o2.inSampleSize=4;
image=BitmapDescriptorFactory.fromBitmap(bitmap);
LatLngBounds bounds =new LatLngBounds( southwest, northeast);
mGroundOverlay = myMap.addGroundOverlay(new GroundOverlayOptions()
.image(image)
.transparency(0.3f)
//.anchor(0, 1)
.positionFromBounds(bounds));
}
else if(SpinerValue.equalsIgnoreCase("RTXFastviaSatellite")){
//rtxfast.png
bitmap = (Bitmap)BitmapFactory.decodeResource(this.getResources(), R.drawable.rtx_fast_two);
BitmapFactory.Options o2 = new BitmapFactory.Options();
o2.inSampleSize=4;
image=BitmapDescriptorFactory.fromBitmap(bitmap);
LatLngBounds bounds =new LatLngBounds( southwest, northeast);
mGroundOverlay = myMap.addGroundOverlay(new GroundOverlayOptions()
.image(image)
.transparency(0.3f)
//.anchor(0, 1)
.positionFromBounds(bounds));
}
else if(SpinerValue.equalsIgnoreCase("RTXStandardviaSatellite")){
//rtxsat.png
bitmap = (Bitmap)BitmapFactory.decodeResource(this.getResources(), R.drawable.rtx_sat_two);
BitmapFactory.Options o2 = new BitmapFactory.Options();
o2.inSampleSize=4;
image=BitmapDescriptorFactory.fromBitmap(bitmap);
LatLngBounds bounds =new LatLngBounds( southwest, northeast);
mGroundOverlay = myMap.addGroundOverlay(new GroundOverlayOptions()
.image(image)
.transparency(0.3f)
//.anchor(0, 1)
.positionFromBounds(bounds));
}
else if(SpinerValue.equalsIgnoreCase("VRSNow")){
//vrsnowtec.png
bitmap = (Bitmap)BitmapFactory.decodeResource(this.getResources(), R.drawable.vrsnow_tec_two);
BitmapFactory.Options o2 = new BitmapFactory.Options();
o2.inSampleSize=4;
image=BitmapDescriptorFactory.fromBitmap(bitmap);
LatLngBounds bounds =new LatLngBounds( southwest, northeast);
mGroundOverlay = myMap.addGroundOverlay(new GroundOverlayOptions()
.image(image)
.transparency(0.3f)
//.anchor(0, 1)
.positionFromBounds(bounds));
}
// InputStream is =getClass().getResourceAsStream(omnistar_g);
//bitmap = readAssetsBitmap("omnistar_g.png");
//bitmap = BitmapFactory.decodeResource(this.getResources(), R.drawable.trimble_screen_logo);
//bitmap=bitmap(is);
//image =BitmapDescriptorFactory.fromResource(R.drawable.omnistar_g);
bitmap.recycle();
bitmap = null;
System.gc();
Runtime.getRuntime().gc();
}