# MigrationDemo

**Repository Path**: cxshu/migration-demo

## Basic Information

- **Project Name**: MigrationDemo
- **Description**: 通过鸿蒙的分布式调度能力实现了跨设备迁移
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 1
- **Forks**: 0
- **Created**: 2021-06-03
- **Last Updated**: 2022-01-04

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README


1). 三方应用部署权限、分布式数据传输的权限、系统应用使用权限的申请

```
"reqPermissions": [
  {"name": "ohos.permission.servicebus.ACCESS_SERVICE"},
  {"name":  "ohos.permission.DISTRIBUTED_DATASYNC"},
  {"name": "com.example.phonedemo02.servicebus.BIND_SERVICE"}
]
```



2)。 声明分布式获取设备列表及设备信息的权限，如下所示：

```
"reqPermissions": [
  {"name":"ohos.permission.DISTRIBUTED_DEVICE_STATE_CHANGE"},
  {"name":"ohos.permission.GET_DISTRIBUTED_DEVICE_INFO"},
  {"name":"ohos.permission.GET_BUNDLE_INFO"}
]
```

4). 本地FA跳转

```
Intent intent2 = new Intent();
    /*
        跳转到指定FA
        ElementName(String deviceId, String bundleName, String abilityName)
        deviceId：设备Id， 为空时代表本机
        bundleName: 包名
        abilityName: 要跳转的目标ability
     */
    ElementName migrationAbility =
            new ElementName("", "com.cxs.migrationdemo", "MigrationAbility");
    intent2.setElement(migrationAbility);
    startAbility(intent2);
```


5). 启动远程FA

```
String deviceId = DeviceUtils.getDeviceId();

    Intent intent1 = new Intent();
    Operation build = new Intent.OperationBuilder()
            .withDeviceId(deviceId)
            .withBundleName("com.cxs.migrationdemo")
            .withAbilityName("com.cxs.migrationdemo.RemoteAbility")
            .withFlags(Intent.FLAG_ABILITYSLICE_MULTI_DEVICE)    // 表示该应用支持分布式调度，否则无法获得分布式能力
            .build();
    intent1.setOperation(build);
    startAbility(intent1);
```


6). 迁移FA

```
continueAbility(String deviceld)接口提供将本地FA迁移到指定设备上的能力
continueAbilityReversibly(String deviceld)接口提供将本地FA迁移到指定设备上的能力，这种迁移可撤回,
reverseContinueAbility)接口提供撤回迁移的能力。
```

![输入图片说明](https://images.gitee.com/uploads/images/2021/0603/201201_36529bae_2252261.png "clipboard0.png")
![输入图片说明](https://images.gitee.com/uploads/images/2021/0603/201220_2a95db6d_2252261.png "clipboard.png")