Android开发之新版百度map的调用(二)：map中添加覆盖物及响应事件和弹出POP功能

本文详细介绍了在BaiduMap中添加覆盖物的方法，包括如何验证BaiduMap密钥、创建主地图和地图主控件，以及实现覆盖物的添加、编辑和删除功能。通过实例代码演示了如何在地图上添加标记、地面覆盖物，并提供了覆盖物的点击事件处理。同时，文章还介绍了如何清除和重新添加覆盖物，以及地图的生命周期管理。

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今天小木在这里给大家介绍在BaiduMap中添加覆盖物的方法，希望可以帮助到大家。

运行结果如图所示：

首先验证BaiduMap密钥的代码，DemoApplication.java:

<span style="font-size:18px;">package com.example.overlaydemo;

import android.app.Application;

import com.baidu.mapapi.SDKInitializer;

public class DemoApplication extends Application {

	@Override
	public void onCreate() {
		super.onCreate();
		// 在使用 SDK 各组间之前初始化 context 信息，传入 ApplicationContext
		SDKInitializer.initialize(this);
	}

}</span>

主地图MainActivity.java中的代码：

package com.example.overlaydemo;

import android.app.Activity;
import android.graphics.Point;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

import com.baidu.mapapi.map.BaiduMap;
import com.baidu.mapapi.map.BaiduMap.OnMarkerClickListener;
import com.baidu.mapapi.map.BitmapDescriptor;
import com.baidu.mapapi.map.BitmapDescriptorFactory;
import com.baidu.mapapi.map.GroundOverlayOptions;
import com.baidu.mapapi.map.InfoWindow;
import com.baidu.mapapi.map.InfoWindow.OnInfoWindowClickListener;
import com.baidu.mapapi.map.MapStatusUpdate;
import com.baidu.mapapi.map.MapStatusUpdateFactory;
import com.baidu.mapapi.map.MapView;
import com.baidu.mapapi.map.Marker;
import com.baidu.mapapi.map.MarkerOptions;
import com.baidu.mapapi.map.OverlayOptions;
import com.baidu.mapapi.model.LatLng;
import com.baidu.mapapi.model.LatLngBounds;

/**
 * 演示覆盖物的用法
 */
public class MainActivity extends Activity {

	/**
	 * MapView 是地图主控件
	 */
	private MapView mMapView;
	private BaiduMap mBaiduMap;
	private Marker mMarkerA;
	private Marker mMarkerB;
	private Marker mMarkerC;
	private Marker mMarkerD;
	private InfoWindow mInfoWindow;

	// 初始化全局 bitmap 信息，不用时及时 recycle
	BitmapDescriptor bdA = BitmapDescriptorFactory
			.fromResource(R.drawable.icon_marka);
	BitmapDescriptor bdB = BitmapDescriptorFactory
			.fromResource(R.drawable.icon_markb);
	BitmapDescriptor bdC = BitmapDescriptorFactory
			.fromResource(R.drawable.icon_markc);
	BitmapDescriptor bdD = BitmapDescriptorFactory
			.fromResource(R.drawable.icon_markd);
	BitmapDescriptor bd = BitmapDescriptorFactory
			.fromResource(R.drawable.icon_gcoding);
	BitmapDescriptor bdGround = BitmapDescriptorFactory
			.fromResource(R.drawable.ground_overlay);

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		mMapView = (MapView) findViewById(R.id.bmapView);
		mBaiduMap = mMapView.getMap();
		MapStatusUpdate msu = MapStatusUpdateFactory.zoomTo(14.0f);
		mBaiduMap.setMapStatus(msu);
		initOverlay();
		mBaiduMap.setOnMarkerClickListener(new OnMarkerClickListener() {
			public boolean onMarkerClick(final Marker marker) {
				Button button = new Button(getApplicationContext());
				button.setBackgroundResource(R.drawable.popup);
				final LatLng ll = marker.getPosition();
				Point p = mBaiduMap.getProjection().toScreenLocation(ll);
				p.y -= 47;
				LatLng llInfo = mBaiduMap.getProjection().fromScreenLocation(p);
				OnInfoWindowClickListener listener = null;
				if (marker == mMarkerA || marker == mMarkerD) {
					button.setText("更改位置");
					listener = new OnInfoWindowClickListener() {
						public void onInfoWindowClick() {
							LatLng llNew = new LatLng(ll.latitude + 0.005,
									ll.longitude + 0.005);
							marker.setPosition(llNew);
							mBaiduMap.hideInfoWindow();
						}
					};
				} else if (marker == mMarkerB) {
					button.setText("更改图标");
					listener = new OnInfoWindowClickListener() {
						public void onInfoWindowClick() {
							marker.setIcon(bd);
							mBaiduMap.hideInfoWindow();
						}
					};
				} else if (marker == mMarkerC) {
					button.setText("删除");
					listener = new OnInfoWindowClickListener() {
						public void onInfoWindowClick() {
							marker.remove();
							mBaiduMap.hideInfoWindow();
						}
					};
				}
				mInfoWindow = new InfoWindow(button, llInfo, listener);
				mBaiduMap.showInfoWindow(mInfoWindow);
				return true;
			}
		});
	}

	public void initOverlay() {
		// add marker overlay
		LatLng llA = new LatLng(39.963175, 116.400244);
		LatLng llB = new LatLng(39.942821, 116.369199);
		LatLng llC = new LatLng(39.939723, 116.425541);
		LatLng llD = new LatLng(39.906965, 116.401394);

		OverlayOptions ooA = new MarkerOptions().position(llA).icon(bdA)
				.zIndex(9);
		mMarkerA = (Marker) (mBaiduMap.addOverlay(ooA));
		OverlayOptions ooB = new MarkerOptions().position(llB).icon(bdB)
				.zIndex(5);
		mMarkerB = (Marker) (mBaiduMap.addOverlay(ooB));
		OverlayOptions ooC = new MarkerOptions().position(llC).icon(bdC)
				.perspective(false).anchor(0.5f, 0.5f).rotate(30).zIndex(7);
		mMarkerC = (Marker) (mBaiduMap.addOverlay(ooC));
		OverlayOptions ooD = new MarkerOptions().position(llD).icon(bdD)
				.perspective(false).zIndex(7);
		mMarkerD = (Marker) (mBaiduMap.addOverlay(ooD));

		// add ground overlay
		LatLng southwest = new LatLng(39.92235, 116.380338);
		LatLng northeast = new LatLng(39.947246, 116.414977);
		LatLngBounds bounds = new LatLngBounds.Builder().include(northeast)
				.include(southwest).build();

		OverlayOptions ooGround = new GroundOverlayOptions()
				.positionFromBounds(bounds).image(bdGround).transparency(0.8f);
		mBaiduMap.addOverlay(ooGround);

		MapStatusUpdate u = MapStatusUpdateFactory
				.newLatLng(bounds.getCenter());
		mBaiduMap.setMapStatus(u);
	}

	/**
	 * 清除所有Overlay
	 * 
	 * @param view
	 */
	public void clearOverlay(View view) {
		mBaiduMap.clear();
	}

	/**
	 * 重新添加Overlay
	 * 
	 * @param view
	 */
	public void resetOverlay(View view) {
		clearOverlay(null);
		initOverlay();
	}

	@Override
	protected void onPause() {
		// MapView的生命周期与Activity同步，当activity挂起时需调用MapView.onPause()
		mMapView.onPause();
		super.onPause();
	}

	@Override
	protected void onResume() {
		// MapView的生命周期与Activity同步，当activity恢复时需调用MapView.onResume()
		mMapView.onResume();
		super.onResume();
	}

	@Override
	protected void onDestroy() {
		// MapView的生命周期与Activity同步，当activity销毁时需调用MapView.destroy()
		mMapView.onDestroy();
		super.onDestroy();
		// 回收 bitmap 资源
		bdA.recycle();
		bdB.recycle();
		bdC.recycle();
		bdD.recycle();
		bd.recycle();
		bdGround.recycle();
	}

}

AndroidManifest.xml中的代码：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.overlaydemo"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="14"
        android:targetSdkVersion="19" />

    <application
        android:name="com.example.overlaydemo.DemoApplication"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <meta-data
            android:name="com.baidu.lbsapi.API_KEY"
            android:value="开发者自己的密钥" />

        <activity
            android:name="com.example.overlaydemo.MainActivity"
            android:configChanges="orientation|keyboardHidden"
            android:label="@string/app_name"
            android:screenOrientation="sensor" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
         <service
            android:name="com.baidu.location.f"
            android:enabled="true"
            android:process=":remote" >
        </service>
    </application>

    <uses-permission android:name="android.permission.GET_ACCOUNTS" />
    <uses-permission android:name="android.permission.USE_CREDENTIALS" />
    <uses-permission android:name="android.permission.MANAGE_ACCOUNTS" />
    <uses-permission android:name="android.permission.AUTHENTICATE_ACCOUNTS" />

    <permission android:name="android.permission.BAIDU_LOCATION_SERVICE" >
    </permission>

    <uses-permission android:name="android.permission.BAIDU_LOCATION_SERVICE" >
    </uses-permission>
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" >
    </uses-permission>
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" >
    </uses-permission>
    <uses-permission android:name="android.permission.INTERNET" >
    </uses-permission>
    <uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION" >
    </uses-permission>
    <!-- <uses-permission android:name="android.permission.WRITE_APN_SETTINGS"></uses-permission> -->
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" >
    </uses-permission>
    <uses-permission android:name="com.android.launcher.permission.READ_SETTINGS" />
    <uses-permission android:name="android.permission.WAKE_LOCK" >
    </uses-permission>
    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.ACCESS_GPS" />
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
    <uses-permission android:name="android.permission.READ_CONTACTS" />
    <uses-permission android:name="android.permission.CALL_PHONE" />
    <uses-permission android:name="android.permission.READ_SMS" />
    <uses-permission android:name="android.permission.SEND_SMS" />
    <!-- SDK1.5需要android.permission.GET_TASKS权限判断本程序是否为当前运行的应用? -->
    <uses-permission android:name="android.permission.GET_TASKS" />
    <uses-permission android:name="android.permission.CAMERA" >
    </uses-permission>
    <uses-permission android:name="android.permission.RECORD_AUDIO" >
    </uses-permission>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" >
    </uses-permission>
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
    <uses-permission android:name="android.permission.BROADCAST_STICKY" />
    <uses-permission android:name="android.permission.WRITE_SETTINGS" />
    <!-- 来电消音 -->
    <uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS" >
    </uses-permission>
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
    <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />

    <supports-screens
        android:anyDensity="true"
        android:largeScreens="true"
        android:normalScreens="false"
        android:resizeable="true"
        android:smallScreens="true" />

</manifest>

注意：在运行时将AndroidManifest.xml中的密钥改为自己的密钥。genymotion不能显示地图，建议在AVD或者真机中运行。

以下是小木写的demo的下载地址：

http://download.youkuaiyun.com/detail/u013671350/7734651

若以上内容帮助到各位，请点个赞或者发个评论，您的鼓励是小木最大的动力！！！