Question

我是Android新手，并试图在我的应用两个文本区域中放置我可以输入地址（来源和目的地）并且点击按钮，这些地址将在地图中显示为。

我能够完成第一部分，这意味着在第一个文本字段中，我能够输入我的原始地址，然后通过单击按钮，该点出现在地图中。我的问题是，当我输入＆＃34;目的地地址＆＃34;时，我的应用程序会崩溃，或者没有任何反应（意味着地图中没有新点）。

这是我的＃34; MapsActivity＆＃34;代码到目前为止

public class MapsActivity extends FragmentActivity implements OnMapReadyCallback {

private GoogleMap mMap;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_maps);
    // Obtain the SupportMapFragment and get notified when the map is ready to be used.
    SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
            .findFragmentById(R.id.map);
    mapFragment.getMapAsync(this);
}

public void onSearch(View view)
{
    EditText location_tf = (EditText)findViewById(R.id.txtedit);
    String location =location_tf.getText().toString();
    List<Address> addressesList = null ;
    if (location != null || !location.equals(""))
    {
        Geocoder geocoder = new Geocoder(this);
        try {
            addressesList = geocoder.getFromLocationName(location , 1);
        } catch (IOException e) {
            e.printStackTrace();
        }

        LinkedHashMap addressList;
        Address address = addressesList.get(0);
        LatLng latLng = new LatLng(address.getLatitude() , address.getLongitude());
        mMap.addMarker(new MarkerOptions().position(latLng).title("Marker"));
        mMap.animateCamera(CameraUpdateFactory.newLatLng(latLng ));

    }

    EditText location_tf1 = (EditText)findViewById(R.id.txtedit2);
    String location1 =location_tf1.getText().toString();
    List<Address> addressesList1 = null ;
    if (location != null || !location.equals(""))
    {
        Geocoder geocoder = new Geocoder(this);
        try {
            addressesList1 = geocoder.getFromLocationName(location , 1);
        } catch (IOException e) {
            e.printStackTrace();
        }

        LinkedHashMap addressList;
        Address address = addressesList1.get(0);
        LatLng latLng = new LatLng(address.getLatitude() , address.getLongitude());
        mMap.addMarker(new MarkerOptions().position(latLng).title("Marker1"));
        mMap.animateCamera(CameraUpdateFactory.newLatLng(latLng ));

    }
}

@Override
public void onMapReady(GoogleMap googleMap) {
    mMap = googleMap;

    // Add a marker in Areios Pagos Athens and move the camera
    LatLng white_tower = new LatLng(40.626459, 22.948419);
    mMap.addMarker(new MarkerOptions().position(white_tower).title("Marker in white tower"));
    mMap.moveCamera(CameraUpdateFactory.newLatLng(white_tower));
    if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
        // TODO: Consider calling
        //    ActivityCompat#requestPermissions
        // here to request the missing permissions, and then overriding
        //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
        //                                          int[] grantResults)
        // to handle the case where the user grants the permission. See the documentation
        // for ActivityCompat#requestPermissions for more details.
        return;
    }
    mMap.setMyLocationEnabled(true);

这是我的＆＃34; Activity_maps.xml＆＃34;文件

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">

<EditText
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/txtedit"
    android:text="Origin address!"
    android:textStyle="bold|italic"
    android:textColor="#a6a5a5"
    android:textSize="15dp"
    android:textIsSelectable="false" />

<EditText
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/txtedit2"
    android:text="Destination address!"
    android:textStyle="bold|italic"
    android:textColor="#a6a5a5"
    android:textSize="15dp"
    android:textIsSelectable="false" />

<Button
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="Find addresses"
    android:id="@+id/btnsearch"
    android:textColor="#ff0000"
    android:textSize="15dp"
    android:textStyle="bold"
    android:onClick="onSearch" />

<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:map="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.elesar.googleaddresssearch.MapsActivity" />

因此，当我试图运行我的应用程序时，在第一个＆＃34;原始地址＆＃34;中输入一个地址。然后点击按钮＆＃34;查找地址＆＃34;，标记出现在地图上！另一方面，当我在＆＃34;目的地地址＆＃34;中键入地址时没有任何反应。任何建议????? 提前谢谢！

如何实现（通过键入）两个地址（原点和目的地），并将它们作为标记放在地图上（googlemaps api）

0 个答案: