Android开发学习之路--百度地图之初体验

Android开发学习之路--百度地图之初体验

手机都有gps和网络，通过gps或者网络可以定位到自己，然后通过百度，腾讯啊之类的地图可以显示我们的地理位置。这里学习下百度地图的使用。首先就是要申请开发者了，这个详细就不多讲了。http://developer.baidu.com/map/wiki/index.php?title=androidsdk/guide/key。可以参考这里，详细介绍了怎么申请。

然后创建应用，创建好了之后，如下所示：

接着是下载百度的sdk了。http://lbsyun.baidu.com/index.php?title=androidsdk/sdkandev-download。一键下载即可，下载好后是v3.7.1版本，如下：

之后需要把libs下的内容拷贝到项目中的。接着我们新建工程，emBaiduMapStudy。然后把上面libs下的jar包和文件夹下的so都拷贝到项目的libs目录下。修改build.gradle：

 

apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.2"

    defaultConfig {
        applicationId "com.jared.embaidumapstudy"
        minSdkVersion 15
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    sourceSets {
        main {
            jniLibs.srcDirs = ['libs']
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.1.1'
}

这里添加了sourceSets。接着我们修改layout布局：

<!--{cke_protected}{C}%3C!%2D%2D%3Fxml%20version%3D%221.0%22%20encoding%3D%22utf-8%22%3F%2D%2D%3E-->
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:layout_margin="5dp">

    <textview android:text="Hello Baidu Map" android:layout_gravity="center" android:layout_margin="2dp" android:layout_width="wrap_content" android:layout_height="wrap_content">

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

</com.baidu.mapapi.map.mapview></textview></linearlayout>

接着修改权限，修改AndroidManifest文件如下：

<!--{cke_protected}{C}%3C!%2D%2D%3Fxml%20version%3D%221.0%22%20encoding%3D%22utf-8%22%3F%2D%2D%3E-->
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.jared.embaidumapstudy">

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

    <uses-permission android:name="android.permission.BAIDU_LOCATION_SERVICE">
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE">
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION">
    <uses-permission android:name="android.permission.INTERNET">
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION">
    <uses-permission android:name="com.android.launcher.permission.READ_SETTINGS">
    <uses-permission android:name="android.permission.WAKE_LOCK">
    <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">
    <uses-permission android:name="android.permission.CAMERA">
    <uses-permission android:name="android.permission.RECORD_AUDIO">
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE">
    <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">
    <!--{cke_protected}{C}%3C!%2D%2D%20%E6%9D%A5%E7%94%B5%E6%B6%88%E9%9F%B3%20%2D%2D%3E-->
    <uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS">
    <uses-permission android:name="android.permission.READ_PHONE_STATE">
    <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS">

    <application android:name=".DemoApplication" android:allowbackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:supportsrtl="true" android:theme="@style/AppTheme">

        <meta-data android:name="com.baidu.lbsapi.API_KEY" android:value="lMYt4e8sq4jPE6GMGLwtra4z">

        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN">
                <category android:name="android.intent.category.LAUNCHER">
            </category></action></intent-filter>
        </activity>
    </meta-data></application>


</uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></permission></manifest>

这里有一个比较恶心的，需要application的android:name属性。接着是各种权限，还有得加上meta-data的内容里的key，也就是上面申请的key了。因为有个android:name属性，所以需要新建类DemoApplication继承Application的。代码如下：

package com.jared.embaidumapstudy;

/**
 * Created by jared on 16/2/20.
 */

import android.app.Application;
import com.baidu.mapapi.SDKInitializer;

public class DemoApplication extends Application {

    @Override
    public void onCreate() {
        super.onCreate();
        SDKInitializer.initialize(this);
    }
}

然后修改MainActivity代码如下：

package com.jared.embaidumapstudy;

import android.app.Activity;
import android.os.Bundle;

import com.baidu.mapapi.map.BaiduMap;
import com.baidu.mapapi.map.MapView;

public class MainActivity extends Activity {

    private MapView baiduMapView;
    private BaiduMap mBaiduMap;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        baiduMapView = (MapView)findViewById(R.id.bmapView);
        mBaiduMap = baiduMapView.getMap();
    }

    @Override
    protected void onDestroy() {
        super.onDestr