Android——百度地图弹出详情窗口InfoWindow

百度地图点击标识点Marker，弹出详情窗InfoWindow
弹出详情窗主要要用到mBaiduMap.setOnMarkerClickListener(marker_Listener);方法
在给mBaiduMap设置setOnMarkerClickListener监听器前，要定义详情窗InfoWindow ，以及给详情窗InfoWindow 设置监听器。
这里要注意的是，定义详情窗InfoWindow时，如果是调用BitmapDescriptorFactory.fromView(infoWindow_view);方法，那么在infoWindow_view的xml布局中的根元素layout下需要有其他的UI控件做支撑，否则BitmapDescriptorFactory.fromView(infoWindow_view)；方法会报空指针异常

package com.example.mapdemo02;


import java.util.ArrayList;
import java.util.List;
import com.baidu.location.BDLocation;
import com.baidu.location.BDLocationListener;
import com.baidu.location.LocationClient;
import com.baidu.location.LocationClientOption;
import com.baidu.mapapi.SDKInitializer;
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.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.MyLocationConfiguration;
import com.baidu.mapapi.map.MyLocationConfiguration.LocationMode;
import com.baidu.mapapi.map.MyLocationData;
import com.baidu.mapapi.map.OverlayOptions;
import com.baidu.mapapi.model.LatLng;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity {

    MapView mMapView;//百度地图控件
    BaiduMap mBaiduMap;//地图图层


    TextView textView_findCourier;//UI显示其他标识点

    BitmapDescriptor bitmap_otherPoint;//标识点图片
    long backTime;//系统退出时间

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

    }
    @Override
    protected void onStart() {
        super.onStart();
        mMapView = (MapView) findViewById(R.id.bmapView);
        mBaiduMap = mMapView.getMap();


        showCourierPoint();//显示标志点
        showInfoWindow();//显示详情窗



    }
    //点击显示详情窗
    private void showInfoWindow() {
        OnMarkerClickListener marker_Listener = new OnMarkerClickListener() {
            @Override
            public boolean onMarkerClick(Marker marker) {
                //在显示新信息窗之前，先关闭已经在显示的信息窗
                mBaiduMap.hideInfoWindow();
                //显示信息窗
                View infoWindow_view = getLayoutInflater().inflate(R.layout.item_infowindow, null);
                TextView textView_item_infoWindow = (TextView) infoWindow_view.findViewById(R.id.textView_item_infoWindow);
                //如果显示窗是要用自定义的view，则最外层可直接用UI控件或者layout，如果外层用layout来布局，那么布局中一定要有UI控件，否则BitmapDescriptorFactory.fromView(view);会报空指针
                //              Bundle bundle = marker.getExtraInfo();
                //              textView_item_infoWindow.setText(bundle.getString("name"));
                textView_item_infoWindow.setText("MAP");
                BitmapDescriptor infoWindow_bitmap = BitmapDescriptorFactory.fromView(infoWindow_view);
                //信息窗点击处理事件
                Log.d("tag", "infoWindow_view="+infoWindow_view);
                Log.d("tag", "infoWindow_bitmap="+infoWindow_bitmap);
                OnInfoWindowClickListener infoWindow_ClickListener = new OnInfoWindowClickListener() {

                    @Override
                    public void onInfoWindowClick() {
                        // TODO Auto-generated method stub
                        mBaiduMap.hideInfoWindow();

                    }
                };
                //定义信息窗
                InfoWindow infoWindow = new InfoWindow(infoWindow_bitmap,//信息窗布局
                        marker.getPosition(), //信息窗的点
                        100, //信息窗与点的位置关系
                        //infoWindow监听器
                        infoWindow_ClickListener
                        );
                //显示信息窗
                mBaiduMap.showInfoWindow(infoWindow);
                return true;
            }
        };
        //地图设置marker的点击事件
        mBaiduMap.setOnMarkerClickListener(marker_Listener);
    }
    //点击获取标志点的位置并显示
    private void showCourierPoint() {
        bitmap_otherPoint = BitmapDescriptorFactory.fromResource(R.drawable.point_blue);
        textView_findCourier = (TextView) findViewById(R.id.textView_findCourier);
        OnClickListener textView_findCourier_OnClickListener = new OnClickListener() {
            @Override
            public void onClick(View v) {
                LatLng p01 = new LatLng(22.654249, 114.07256);
                LatLng p02 = new LatLng(22.614249, 114.03256);
                LatLng p03 = new LatLng(22.654249, 114.02256);
                OverlayOptions Overlay_p01 = new MarkerOptions().position(p01).icon(bitmap_otherPoint);
                OverlayOptions Overlay_p02 = new MarkerOptions().position(p02).icon(bitmap_otherPoint);
                OverlayOptions Overlay_p03 = new MarkerOptions().position(p03).icon(bitmap_otherPoint);
                lists_OverlayOptions.add(Overlay_p01);
                lists_OverlayOptions.add(Overlay_p02);
                lists_OverlayOptions.add(Overlay_p03);
                mBaiduMap.addOverlays(lists_OverlayOptions);
            }
        };
        textView_findCourier.setOnClickListener(textView_findCourier_OnClickListener);
    }

    }

    @Override
    protected void onResume() {
        // TODO Auto-generated method stub
        mMapView.onResume();
        super.onResume();
    }

    @Override
    protected void onPause() {
        // TODO Auto-generated method stub
        mMapView.onPause();
        super.onPause();
    }
    @Override
    protected void onDestroy() {
        // TODO Auto-generated method stub

        mMapView.onDestroy();
        mMapView = null;
        super.onDestroy();
    }

    @Override
    public void onBackPressed() {
        if (System.currentTimeMillis()-backTime<2000) {
            finish();
        }else {
            backTime = System.currentTimeMillis();
            Toast.makeText(MainActivity.this, "再按一次退出", Toast.LENGTH_SHORT).show();
        }
    }

}

详情窗的xml布局文件：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="80dp" android:layout_height="30dp" android:background="#00ffaa" >
    <TextView android:id="@+id/textView_item_infoWindow" android:layout_width="match_parent" android:layout_height="match_parent" android:text="XXX" />

</RelativeLayout>

mainactivity布局xml：

<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"
    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.example.mapdemo02.MainActivity" >

    <com.baidu.mapapi.map.MapView
        android:id="@+id/bmapView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:clickable="true" />

    <TextView 
        android:id="@+id/textView_findCourier"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="显示标志点"
        android:background="#ff00aa"
        android:layout_alignParentRight="true"
        android:layout_marginTop="10dp"    
        android:layout_marginRight="5dp"   
        android:clickable="true" 
        />

</RelativeLayout>