android百度地图画圆,android百度地图半径画圆

Java代码

import android.content.Context;

import android.graphics.Canvas;

import android.graphics.Color;

import android.graphics.Paint;

import android.graphics.Paint.Style;

import android.graphics.Path;

import android.graphics.Point;

import android.os.Bundle;

import com.baidu.mapapi.BMapManager;

import com.baidu.mapapi.GeoPoint;

import com.baidu.mapapi.MapActivity;

import com.baidu.mapapi.MapController;

import com.baidu.mapapi.MapView;

import com.baidu.mapapi.Overlay;

import com.baidu.mapapi.Projection;

public class BaiduMapActivity extends MapActivity {

private Context mContext;

private MapView mapView;

@Override

protected boolean isRouteDisplayed() {

// TODO Auto-generated method stub

return false;

}

@Override

protected void onCreate(Bundle arg0) {

super.onCreate(arg0);

setContentView(R.layout.baidumap_layout);

BaseApplication baseApp = (BaseApplication) this.getApplication();

if (baseApp.mBMapManage == null) {

baseApp.mBMapManage = new BMapManager(mContext);

baseApp.mBMapManage.init(baseApp.mStrKey,

new BaseApplication.MyGeneralListener());

}

baseApp.mBMapManage.start();

super.initMapActivity(baseApp.mBMapManage);// 初始化map sdk

mapView = (MapView) findViewById(R.id.bmapView);

mapView.setBuiltInZoomControls(true);

// 设置在缩放动画过程中也显示overlay,默认为不绘制

mapView.setDrawOverlayWhenZooming(true);

// RouteLine routeLine =

// (RouteLine)getIntent().getSerializableExtra("routeLine");

//这里画点和连接线

MyOverlay myOverlay = new MyOverlay();

mapView.getOverlays().add(myOverlay);

MapController mapController = mapView.getController();

mapController.zoomIn();

mapController.animateTo(new GeoPoint((int) (2259316 * 10),

(int) (11396279 * 10)));//设置一个起点

}

class MyOverlay extends Overlay {

public void draw(Canvas canvas, MapView mapView, boolean shadow) {

super.draw(canvas, mapView, shadow);

Paint paint = new Paint();

paint.setColor(Color.BLUE);

paint.setDither(true);

paint.setStyle(Paint.Style.STROKE);

paint.setStrokeCap(Paint.Cap.ROUND);

paint.setStrokeJoin(Paint.Join.ROUND);

paint.setStrokeWidth(5);

Projection projection = mapView.getProjection();

Point p1 = new Point();

projection.toPixels(gpoint1 = new GeoPoint((int) (2259316 * 10), (int) (11396279 * 10)), p1);

canvas.drawCircle(p1.x, p1.y, projection.metersToEquatorPixels(500), paint);

}

}

}

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