Question

public class MapActivity extends SherlockFragmentActivity{

// Google Map
private GoogleMap googleMap;
String longitude="0";
String latitude="0";
String title="";
@Override
protected void onCreate(Bundle savedInstanceState) {
    try
    {
        super.onCreate(savedInstanceState);


        setContentView(R.layout.activity_map); 
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        getSupportActionBar().setHomeButtonEnabled(true);
        getSupportActionBar().setDisplayShowHomeEnabled(true);
        try {
            // Loading map
            initilizeMap();

        } catch (Exception e) {
            e.printStackTrace();
        }}
        catch(Exception eos)
        {

        }


}

/**
 * function to load map. If map is not created it will create it for you
 * */
private void initilizeMap() {
    try
    {
          if (googleMap == null) {
        String longitude="27.175015";
        String latitude="78.042155";
        double savedLat = Double.parseDouble(longitude);
        double savedLng =Double.parseDouble(latitude);
        LatLng cameraLatLng = new LatLng(savedLat, savedLng);
        googleMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(
                R.id.map)).getMap();
        googleMap.addMarker(new MarkerOptions()
        .position(new LatLng( Float.parseFloat(latitude), Float.parseFloat(longitude))).title("Marker")
        .title("mazen"));
        googleMap.animateCamera(CameraUpdateFactory.newLatLngZoom(cameraLatLng, 17));
        // check if map is created successfully or not
        if (googleMap == null) {

        }
          }
    }
    catch(Exception e)
    {

    }
}

@Override
protected void onResume() {
    super.onResume();
    initilizeMap();
}
public boolean onOptionsItemSelected(MenuItem item) {
    if (item.getItemId() == android.R.id.home) {
        finish();
        overridePendingTransition(R.anim.dux_sld_lft_in,
                R.anim.dux_sld_lft_out);
        return true;
    }else {
        return super.onOptionsItemSelected(item);
    }
}
@Override
public void onBackPressed() {
    // TODO Auto-generated method stub
    super.onBackPressed();
     overridePendingTransition(R.anim.dux_sld_lft_in, R.anim.dux_sld_lft_out);
}
public boolean onCreateOptionsMenu(Menu menu) {
    super.onCreateOptionsMenu(menu);
    return true;
}

}

我在这里添加标记，但没有标记显示原因？我怎样才能在多个地方添加多个标记？这非常有趣的错误...因为我真的做了我读的教程希望有人能为我提供完成这项任务所需的必要帮助

Answer 1

使用addMarker()

喜欢：

myMap.addMarker(new MarkerOptions().position(yourLatLng).icon(BitmapDescriptorFactory.fromResource(R.drawable.yourmarkericon)));

其中 myMap 是GoogleMap的对象，而 yourLatlng 是Latlng您要添加标记和 yourmarkericon 是您要在地图上显示的图标

参考文献

https://developers.google.com/maps/documentation/android/marker

https://developers.google.com/maps/documentation/android/reference/com/google/android/gms/maps/model/Marker

简单教程

http://bon-app-etit.blogspot.be/2012/12/add-informationobject-to-marker-in.html

添加标记不工作android

1 个答案: