跨设备访问DataAbility的坑点！

注意！！！访问远程设备的Data Ability除了上面讲的uri里添加DevcieId以外，必须注意下面几点：

1. 要定义应用级别的访问Data Abiltiy的权限

   "defPermissions": [
   
     { "name": "cn.ybzy.hmsdemo.DataAbilityShellProvider.PROVIDER", "grantMode": "system_grant" }
   
   ]

2. 要加分布式数据同步和设备信息获取权限

   "reqPermissions": [
   
     { "name": "ohos.permission.GET_DISTRIBUTED_DEVICE_INFO" },
   
    { "name": "ohos.permission.DISTRIBUTED_DATASYNC" },
   
    { "name": "ohos.permission.READ_USER_STORAGE" },
   
    { "name": "cn.ybzy.hmsdemo.DataAbilityShellProvider.PROVIDER" }
   
   ]
   
   requestPermissionsFromUser(new String[]{"ohos.permission.DISTRIBUTED_DATASYNC", "ohos.permission.servicebus.ACCESS_SERVICE", "com.huawei.hwddmp.servicebus.BIND_SERVICE"}, 0);

3. Data Ability的注册信息中一定要打开允许其他应用访问的权限

   {
   
    "visible": true, //最后的坑，创建Data Ability时候不会自动添加
   
    "permissions": [ "cn.ybzy.hmsdemo.DataAbilityShellProvider.PROVIDER" ],
   
    "name": "cn.ybzy.hmsdemo.SimpleDataAbility",
   
    "icon": "$media:icon",
   
    "description": "hap sample empty provider",
   
    "type": "data", "uri": "dataability://cn.ybzy.hmsdemo.SimpleDataAbility"
   
   }

   作者：zhonghongfa

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