如何在 App 畫面上顯示 Google map

Reference:

https://developers.google.com/maps/documentation/android-api/map#indoor_maps
https://developer.android.com/guide/topics/location/index.html

Illustration:

按照“取得 Google map的 API key”一文，取得了 Google Map API key之後，之後在下列檔案新增紅字的部分，就可以在你的 app裡面顯示 Google map了

1. AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="your_package_name" >

<permission android:name="your_package_name.permission.MAPS_RECEIVE" android:protectionLevel="signature"/>
    <uses-permission android:name="your_package_name.permission.MAPS_RECEIVE"/>
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
    <!--
 The ACCESS_COARSE/FINE_LOCATION permissions are not required to use
         Google Maps Android API v2, but are recommended.
    -->
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

<application
        android:allowBackup="true"
        ...... >
        <meta-data
            android:name="com.google.android.gms.version"
            android:value="6587000" />
        <meta-data
            android:name="com.google.android.maps.v2.API_KEY"
            android:value="@string/google_maps_key" />

        .......
    </application>
    <!--
              如果使用OpenGL ES version 2來顯示
              避免 Google Play Store 認為我們的 App 不支援 OpenGL ES version 2
    -->
    <uses-feature android:glEsVersion="0x00020000" android:required="true" />
</manifest>

2. res/values/google_maps_key.xml

<resources>
......
    <string name="google_maps_key" translatable="false" templateMergeStrategy="preserve">
        YOUR_KEY_HERE
    </string>
</resources>