android支付宝支付

文档地址：
https://doc.open.alipay.com/docs/doc.htm?spm=a219a.7386797.0.0.LXidgg&treeId=204&articleId=105297&docType=1
sdk和demo下载地址：
https://doc.open.alipay.com/doc2/detail.htm?treeId=54&articleId=104509&docType=1
android集成流程详解
https://doc.open.alipay.com/docs/doc.htm?spm=a219a.7629140.0.0.DX6aR4&treeId=204&articleId=105296&docType=1

1.首先引入支付宝官方提供的jar包

2.在AndroidManifest.xml中添加注册

<activity
    android:name="com.alipay.sdk.app.H5PayActivity"
    android:configChanges="orientation|keyboardHidden|navigation"
    android:exported="false"
    android:screenOrientation="behind" >
</activity>
<activity
    android:name="com.alipay.sdk.auth.AuthActivity"
    android:configChanges="orientation|keyboardHidden|navigation"
    android:exported="false"
    android:screenOrientation="behind" >
 </activity>

并且声明权限

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />