MapView学习Demo1

工程结构图：
[img]

[/img]
效果图：
[img]

[/img]

main.xml

<?xml version="1.0" encoding="utf-8"?>   
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"   
 android:layout_width="fill_parent"   
 android:layout_height="fill_parent"   
 >   
<com.google.android.maps.MapView 
android:id="@+id/MapView01" 
android:layout_width="fill_parent" 
android:layout_height="fill_parent" 
android:apiKey="0axCo4Wu7FStW2yuF-kfg0X8Rr50919GvKpiCrA"/> 
</RelativeLayout>

AndroidManifest.xml:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.magus.map"
      android:versionCode="1"
      android:versionName="1.0">
    <uses-sdk android:minSdkVersion="8" />

    <application android:icon="@drawable/icon" android:label="@string/app_name">
    	 <uses-library android:name="com.google.android.maps" /> 
        <activity android:name="Activity01"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

    </application>
    
  <uses-permission android:name="android.permission.INTERNET" /> 
  <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> 
  <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/> 
  <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/> 
    
</manifest>

Activity01:

package com.magus.map;

import java.util.List;

import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;
import com.google.android.maps.Overlay;

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Point;
import android.os.Bundle;

public class Activity01 extends MapActivity {
	private MapView mMapView;
	private MapController mMapController;
	private GeoPoint mGeoPoint;

	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		mMapView = (MapView) findViewById(R.id.MapView01);
		// 设置为交通模式
		mMapView.setTraffic(true);
		// 设置为卫星模式
		//mMapView.setSatellite(true);
		// 设置为街景模式
		// mMapView.setStreetView(false);
		// 取得MapController对象(控制MapView)
		mMapController = mMapView.getController();
		mMapView.setEnabled(true);
		mMapView.setClickable(true);
		// 设置地图支持缩放
		mMapView.setBuiltInZoomControls(true);
		// 设置起点为成都
		mGeoPoint = new GeoPoint((int) (30.659259 * 1000000),
				(int) (104.065762 * 1000000));
		// 定位到成都
		mMapController.animateTo(mGeoPoint);
		// 设置倍数(1-21)
		mMapController.setZoom(12);
		// 添加Overlay，用于显示标注信息
		MyLocationOverlay myLocationOverlay = new MyLocationOverlay();
		List<Overlay> list = mMapView.getOverlays();
		list.add(myLocationOverlay);
	}

	protected boolean isRouteDisplayed() {
		return false;
	}

	class MyLocationOverlay extends Overlay {
		public boolean draw(Canvas canvas, MapView mapView, boolean shadow,
				long when) {
			super.draw(canvas, mapView, shadow);
			Paint paint = new Paint();
			Point myScreenCoords = new Point();
			// 将经纬度转换成实际屏幕坐标
			mapView.getProjection().toPixels(mGeoPoint, myScreenCoords);
			paint.setStrokeWidth(1);
			paint.setARGB(255, 255, 0, 0);
			paint.setStyle(Paint.Style.STROKE);
			Bitmap bmp = BitmapFactory.decodeResource(getResources(),
					R.drawable.home);
			canvas.drawBitmap(bmp, myScreenCoords.x, myScreenCoords.y, paint);
			canvas.drawText("天府广场", myScreenCoords.x, myScreenCoords.y, paint);
			return true;
		}
	}
}