android + Google地图标记

我有一个拉特，lng和一部分文本的JSON对象。我正在使用ItemizedOverlay将这些位置添加到Google地图。我使用一个单独的标记添加了所有不同的OverlayItem，这是一个Drawable对象（res目录中的一个简单的png）。android + Google地图标记

但是，我更喜欢这个标记更有意义，还包括位置文本。检索文本没有问题，但是如何将它添加到位置或标记？

我是否需要建立自己的标记，os是否有任何其他对象允许我在地图上显示文本以及位置，或者......？任何指针？

来源

2012-01-06 user410932

也许试试这个： http://stackoverflow.com/questions/6777022/how-to-drawan-overlay-with-buttons-text-and-image-on-a-google-map – goodm 2012-01-06 10:10:46

这是完美的解决方案请....
在你的活动，你需要添加下面的参数

geopoint = new GeoPoint((int) (Double.parseDouble(lat) * 1E6), (int)Double.parseDouble(lon) * 1E6)); 
myMapView.getOverlays().add(new DrawableMapOverlay(this,geopoint,R.drawable.map, name));

然后DrawableMapOverlay类

import com.google.android.maps.MapView; 
import com.google.android.maps.Overlay; 

public class DrawableMapOverlay extends Overlay { 

    private static final double MAX_TAP_DISTANCE_KM = 3; 
    // Rough approximation - one degree = 50 nautical miles 
    private static final double MAX_TAP_DISTANCE_DEGREES = MAX_TAP_DISTANCE_KM * 0.5399568 * 50; 
    private final GeoPoint geoPoint; 
    private final Context context; 
    private final int drawable; 
    private final String workerName; 
    /** 
    * @param context the context in which to display the overlay 
    * @param geoPoint the geographical point where the overlay is located 
    * @param drawable the ID of the desired drawable 
    */ 
    public DrawableMapOverlay(Context context, GeoPoint geoPoint, int drawable,String workerName) { 
    this.context = context; 
    this.geoPoint = geoPoint; 
    this.drawable = drawable; 
    this.workerName = workerName; 
    } 

    @Override 
    public boolean draw(Canvas canvas, MapView mapView, boolean shadow, long when) { 
    super.draw(canvas, mapView, shadow); 

    // Convert geo coordinates to screen pixels 
    Point screenPoint = new Point(); 
    mapView.getProjection().toPixels(geoPoint, screenPoint); 
    Paint paint = new Paint(); 
    // Read the image 
    Bitmap markerImage = BitmapFactory.decodeResource(context.getResources(), drawable); 
    paint.setStrokeWidth(1); 
    paint.setARGB(150, 000, 000, 000); 
    paint.setStyle(Paint.Style.STROKE); 
    // Draw it, centered around the given coordinates 
    canvas.drawBitmap(markerImage, 
     screenPoint.x - markerImage.getWidth()/2, 
     screenPoint.y - markerImage.getHeight()/2, null); 
    canvas.drawText(workerName, screenPoint.x- markerImage.getWidth()/2, screenPoint.y - markerImage.getHeight()/2 , paint); 
    return true; 
    } 

    @Override 
    public boolean onTap(GeoPoint p, MapView mapView) { 
    // Handle tapping on the overlay here 
    return true; 
    } 
}

它是在工作的罚款我项目。

来源

2012-01-06 11:48:11

android + Google地图标记

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