android 百度地图api之旅（1）环境搭配

一.百度地图的用途

1.设置覆盖物

2.到某一个地方的路线（打车，打的）

3.两点间的距离

4.搜索功能

二.百度地图的搭建

1.AndroidManifest.xml 添加授权文件

 <!-- 添加授权信息 -->
      <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"></uses-permission>
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"></uses-permission>
    <uses-permission android:name="android.permission.INTERNET"></uses-permission>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission>  
    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"></uses-permission> 
    <uses-permission android:name="android.permission.READ_PHONE_STATE"></uses-permission>
    <uses-permission android:name="android.permission.CALL_PHONE"></uses-permission>
   <!-- 对屏幕的支持 -->
    <supports-screens android:largeScreens="true"
        android:normalScreens="false" android:smallScreens="true"
        android:resizeable="true" android:anyDensity="true"/>

2.导入baidumapapi.jar 包导入

3.添加百度控件

<!-- 添加百度控件 -->
    <com.baidu.mapapi.MapView android:id="@+id/bmapView"
    android:layout_width="fill_parent" android:layout_height="fill_parent" 
    android:clickable="true"     
/>

4.<!------------重要代码------------->

package com.lihao.mymap;

import com.baidu.mapapi.BMapManager;
import com.baidu.mapapi.GeoPoint;
import com.baidu.mapapi.MKGeneralListener;
import com.baidu.mapapi.MapActivity;
import com.baidu.mapapi.MapController;
import com.baidu.mapapi.MapView;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.Toast;

public class MainActivity extends MapActivity {

    private MapView mapView;    //控件
    private BMapManager bMapManager;  //百度引擎
    private String Key = "*******"; //申请的百度key值
    private MapController mapController;    //百度控制器
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mapView = (MapView)findViewById(R.id.bmapView);
        bMapManager = new BMapManager(MainActivity.this);
        //百度地图初始化验证key值是否正确
        bMapManager.init(Key, new MKGeneralListener() {
            
            @Override
            public void onGetPermissionState(int arg0) {
                // TODO Auto-generated method stub
                if(arg0 == 300)
                {
                    Toast.makeText(MainActivity.this, "请验证key值", 3).show();
                }
            }
            
            @Override
            public void onGetNetworkState(int arg0) {
                // TODO Auto-generated method stub
                
            }
        });
        this.initMapActivity(bMapManager);
        //获取控制器
        mapController = mapView.getController();
        //设置可以缩放
        mapView.setBuiltInZoomControls(true);
        //  设置地图的中心点  117.214325,31.86119
        GeoPoint geoPoint = new GeoPoint((int)(31.86119 * 1E6), (int)(117.214325 * 1E6));
        mapController.setCenter(geoPoint);
        //缩放级别 也可以为12
        mapController.setZoom(15);
        
    }
    //关闭
    protected void onDestroy() {
        // TODO Auto-generated method stub
        super.onDestroy();
        if(bMapManager != null)
        {
            bMapManager.destroy();
            bMapManager = null;
        }
    }
    @Override
    //当Actitity开始准备与用户交互式调用该方法
    protected void onResume() {
        // TODO Auto-generated method stub
        super.onResume();
        if(bMapManager != null)
        {
            bMapManager.start();
        }
    }
    @Override
    //当系统即将启动另外一个Activity之前调用该方法
    protected void onPause() {
        // TODO Auto-generated method stub
        super.onPause();
        if(bMapManager != null)
        {
            bMapManager.stop();
            
        }
    }
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    protected boolean isRouteDisplayed() {
        // TODO Auto-generated method stub
        return false;
    }

}

总结  使用百度地图api 必须要调用百度地图的init(),start(),stop(),destroy()

贴图