Question

我的标记不起作用。我不知道为什么。标记没有onMapReady方法中的任何工作。在onCreate.Works运行其他。它的印刷品是“hata1”和“hata2”。当我创建新项目时，不会从/sdk/extras/../google_play/services导入。我得到“找不到文件/settings.jar”错误。所以我也不想要新项目。

import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.support.v4.app.FragmentActivity;
import android.os.Bundle;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;
import java.util.*;
import android.os.Bundle;
import com.google.android.*;
import android.graphics.*;
import android.view.View;
import android.widget.Toast;


public class MapsActivity extends FragmentActivity implements OnMapReadyCallback{

    private GoogleMap myMap;


    public static final LatLng PERTH = new LatLng(36.57, 36.17);
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_maps);

        Toast.makeText(getApplicationContext(),"hata1",Toast.LENGTH_SHORT).show();
        if(myMap!=null) {
            Marker marker = myMap.addMarker(new MarkerOptions()
                    .position(PERTH)
                    .title("Marker").visible(true));
            marker.showInfoWindow();

            myMap.moveCamera(CameraUpdateFactory.newLatLngZoom(PERTH, 13));
        }
        else
        {
            Toast.makeText(getApplicationContext(),"hata2",Toast.LENGTH_SHORT).show();
        }

    }


    @Override


    public void onMapReady(GoogleMap myMap) {

    }

}

Answer 1

public class MapsActivity extends FragmentActivity implements OnMapReadyCallback{

private GoogleMap myMap;


public static final LatLng PERTH = new LatLng(36.57, 36.17);
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_maps);
    getHandleOnMap();
}
private void getHandleOnMap()
{
    SupportMapFragment mapFragment = (SupportMapFragment) this.getChildFragmentManager()
            .findFragmentById(R.id.mapFragment);
    mapFragment.getMapAsync(this);
}
@Override
public void onMapReady(GoogleMap myMap) {
googleMap.addMarker(new MarkerOptions()
            .position(PERTH)
            .title("Hello"));
}

}

如果您遇到任何崩溃或错误，请分享详细日志

Answer 2

你能这样试试吗？因为onMapReady()在GoogleMap准备就绪后会自动生成GoogleMap，并且您需要public class MapsActivity extends FragmentActivity implements OnMapReadyCallback{ private GoogleMap myMap; public static final LatLng PERTH = new LatLng(36.57, 36.17); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_maps); MapFragment mapFragment = (MapFragment) getFragmentManager() .findFragmentById(R.id.map); mapFragment.getMapAsync(this); } @Override public void onMapReady(GoogleMap myMap) { Toast.makeText(getApplicationContext(),"hata1",Toast.LENGTH_SHORT).show(); if(myMap!=null) { Marker marker = myMap.addMarker(new MarkerOptions() .position(PERTH) .title("Marker").visible(true)); marker.showInfoWindow(); myMap.moveCamera(CameraUpdateFactory.newLatLngZoom(PERTH, 13)); } else { Toast.makeText(getApplicationContext(),"hata2",Toast.LENGTH_SHORT).show(); } } }个对象才能使用。

Map<String, String> map = new HashMap<>();
map.put("name", Name);.....so on

Android Marker不起作用

2 个答案: