Question

我是android的新手

我必须添加三个图像日历，cytilife和太阳图像，它们应该被修复，即如果地图在任何时间点重新调整大小，缩放等，他们不应该改变它们的位置。

我可以显示地图和圆圈。要显示我使用过度/标记的图像，但如果地图发生变化，它们会发生变化。

这是我的活动课

   public class MainActivity extends FragmentActivity  {

private GoogleMap map;
private int offset;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    map = ((MapFragment) getFragmentManager().findFragmentById(R.id.map))
            .getMap();

    if (map != null) {

        MarkerOptions options = new MarkerOptions();
        options.position(getCoords(17.3700, 88.4800)).anchor(0.5f, 0.5f);
        options.icon(BitmapDescriptorFactory.fromBitmap(getBitmap(17.3700,
                78.4800)));

        final Marker marker = map.addMarker(options);

        UiSettings uiSettings = map.getUiSettings();
        uiSettings.setScrollGesturesEnabled(true);

        LatLng latLng = new LatLng(-33.796923, 150.922433);
        map.setMapType(GoogleMap.MAP_TYPE_NORMAL);
        map.addMarker(new MarkerOptions()
        .position(latLng)
        .title("My Spot")
        .snippet("This is my spot!")
        .icon(BitmapDescriptorFactory.fromResource(R.drawable.calendar)));
        map.getUiSettings().setZoomControlsEnabled(true);
        map.animateCamera(CameraUpdateFactory.newLatLngZoom(latLng, 10));

        map.setOnCameraChangeListener(new OnCameraChangeListener() {

            @Override
            public void onCameraChange(CameraPosition paramCameraPosition) {
                LatLng centerOfMap = map.getCameraPosition().target;
                marker.setPosition(centerOfMap);
            }
        });
    }
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();
    if (id == R.id.action_settings) {
        return true;
    }
    return super.onOptionsItemSelected(item);
}

private Bitmap getBitmap(double latitude, double longitude) {

    // fill color
    Paint paint1 = new Paint(Paint.ANTI_ALIAS_FLAG);
    paint1.setColor(0x110000FF);
    paint1.setStyle(Style.FILL);

    // stroke color
    Paint paint2 = new Paint(Paint.ANTI_ALIAS_FLAG);
    paint2.setColor(Color.GRAY);
    paint2.setStyle(Style.STROKE);

    // circle radius - 200 meters
    int radius = 400;

    // create empty bitmap
    Bitmap b = Bitmap
            .createBitmap(radius * 2, radius * 2, Config.ARGB_8888);
    Canvas c = new Canvas(b);

    c.drawCircle(radius, radius, radius, paint1);
    c.drawCircle(radius, radius, radius, paint2);

    return b;
}

private LatLng getCoords(double lat, double lng) {
    LatLng latLng = new LatLng(lat, lng);

    Projection proj = map.getProjection();
    Point p = proj.toScreenLocation(latLng);
    p.set(p.x, p.y + offset);

    return proj.fromScreenLocation(p);
}

  }

这是我的activity_main.xml

 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.naveen.myfirstapp.MainActivity" >

<fragment
    android:id="@+id/map"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentTop="true"
    android:layout_marginBottom="86dp"
    class="com.google.android.gms.maps.MapFragment"


     />

谢谢

Answer 1

您可以在XML布局文件中使用FrameLayout将图像放置在Map片段之上，如下所示 XML布局：

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.naveen.myfirstapp.MainActivity" >

<fragment
    android:id="@+id/map"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentTop="true"
    android:layout_marginBottom="86dp"
    class="com.google.android.gms.maps.MapFragment"


     />

     <ImageView 
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_alignParentTop="true|left"
         android:src="@drawable/calendar_icon
     />

</FrameLayout>

Answer 2

尝试此代码在此代码中，图像将添加到地图片段上，并显示在地图顶部。

  <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MapsActivity">


<ImageView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:background="@drawable/image"
    android:layout_alignParentTop="true"
    android:layout_alignParentLeft="true"/>

<fragment
    android:id="@+id/map"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:name="com.google.android.gms.maps.SupportMapFragment" />


</RelativeLayout>

Answer 3

这是因为您正在扩展FragmentActivity：

 public class MainActivity extends FragmentActivity  {...

如果您不必这样做，请尝试扩展AppCompatActivity：

public class MainActivity extends AppCompatActivity {...

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