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标题: OpenHarmony如何修改设备名称 [打印本页]

作者: onefan 时间: 昨天 17:11
标题: OpenHarmony如何修改设备名称
[md]**需求场景：**有部分场景需要修改设备名称，用于设备名称展示和xts送测等场景。
**需求分析：**修改设备名称的入口在设置-关于设备-设备名称，同理在设置-蓝牙中开启蓝牙也会有设备名称入口。
1.Settings源码的DeviceName.ets中
[@State](https://github.com/State "@State") deviceName: string = AboutDeviceModel.getSystemName();
TextInput({ text: this.deviceName })

2.默认值：AboutDeviceModel.getSystemName() 从settingsData中获取，当settingsData中拿不到值时，则显示为DEVICE\_NAME = ‘OpenHarmony 2.0 Canary’;

<pre class="prettyprint linenums prettyprinted"><ol class="linenums"><li class="L0"><code class="lang-javascript"> /**</code></li><li class="L1" data-node-id="20250121171101-sbt217c"><code class="lang-javascript"> * Get system name from SettingsData</code></li><li class="L2"><code class="lang-javascript"> */</code></li><li class="L3" data-node-id="20250121171101-eav7vi0"><code class="lang-javascript"> @Log</code></li><li class="L4"><code class="lang-javascript"> @CatchError(ConfigData.DEVICE_NAME)</code></li><li class="L5" data-node-id="20250121171101-re30iqj"><code class="lang-javascript"> getSystemName() {</code></li><li class="L6"><code class="lang-javascript"> let context = GlobalContext.getContext().getObject(GlobalContext.globalKeySettingsAbilityContext) as common.Context;</code></li><li class="L7" data-node-id="20250121171101-9dzvsh7"><code class="lang-javascript"> let deviceName = settings.getValueSync(context, ConfigData.SETTINGSDATA_DEVICE_NAME, ConfigData.DEVICE_NAME);</code></li><li class="L8"><code class="lang-javascript"> return deviceName;</code></li><li class="L9" data-node-id="20250121171101-q76itj4"><code class="lang-javascript"> }</code></li></ol></pre>

SETTINGSDATA\_DEVICE\_NAME = settings.general.DEVICE\_NAME;
DEVICE\_NAME = ‘OpenHarmony 2.0 Canary’;

3.如果需要配置默认值则需要匹配到SettingsData中的settings.general.DEVICE\_NAME。
SettingsData中SettingsDBHelper.ets代码如下：

<pre class="prettyprint linenums prettyprinted"><ol class="linenums"><li class="L0"><code class="lang-javascript"> let tableName: string = this.getTableName(TableType.SETTINGS, this.DEFAULT_USER_ID);</code></li><li class="L1" data-node-id="20250121171101-9ztex4k"><code class="lang-javascript"> // 初始化设备名称</code></li><li class="L2"><code class="lang-javascript"> let deviceName: string = deviceInfo.marketName;</code></li><li class="L3" data-node-id="20250121171101-axn2qmw"><code class="lang-javascript"> if (deviceName.startsWith('"') && deviceName.endsWith('"')) {</code></li><li class="L4"><code class="lang-javascript"> deviceName = JSON.parse(deviceName);</code></li><li class="L5" data-node-id="20250121171101-3qj7gp8"><code class="lang-javascript"> }</code></li><li class="L6"><code class="lang-javascript"> await this.loadTableSettings(settings.general.DEVICE_NAME, deviceName, tableName);</code></li></ol></pre>

4.实际读得是deviceInfo.marketName得默认值，其对应的属性为const.product.name。
./startup/init/interfaces/innerkits/syspara/parameter.c:137: return GetProperty(“const.product.name”, &marketName);
修改此属性为想要的设备名称即可。
./startup/init/services/etc/param/ohos.para:22:const.product.name=”OpenHarmony 3.2”

5.开发版中替换验证，可以在./etc/param/ohos.para中修改const.product.name。重启即可生效。

6.同理在设置的蓝牙目录这一块也是可以显示设备名称。当在配置中修改默认值或手动修改设备名称后，再搜索蓝牙即可方便快捷的找到对应的设备。

<pre class="prettyprint linenums prettyprinted"><ol class="linenums"><li class="L0"><code class="lang-javascript"> registerBluetoothStateObserver(callback: (data: boolean) => void) {</code></li><li class="L1" data-node-id="20250121171101-3bks602"><code class="lang-javascript"> LogUtil.debug(`${this.TAG} subscribeStateChange call`)</code></li><li class="L2"><code class="lang-javascript"> bluetooth.on('stateChange', (data) => {</code></li><li class="L3" data-node-id="20250121171101-p1a1nbv"><code class="lang-javascript"> LogUtil.debug(`${this.TAG} subscribeStateChange->stateChange data:${data}`);</code></li><li class="L4"><code class="lang-javascript"> switch (data) {</code></li><li class="L5" data-node-id="20250121171101-4ea3khq"><code class="lang-javascript"> case bluetooth.BluetoothState.STATE_ON:</code></li><li class="L6"><code class="lang-javascript"> let deviceName: string = this.getSystemName()</code></li><li class="L7" data-node-id="20250121171101-yxwzkw9"><code class="lang-javascript"> let curDeviceName: string = bluetooth.getLocalName()</code></li><li class="L8"><code class="lang-javascript"> LogUtil.debug(this.TAG + "subscribeStateChange get deviceName: " + deviceName + " ; curDeviceName: " + curDeviceName)</code></li><li class="L9" data-node-id="20250121171101-08ahppe"><code class="lang-javascript"> if (deviceName !== curDeviceName) {</code></li><li class="L0"><code class="lang-javascript"> LogUtil.debug(this.TAG + "subscribeStateChange deviceName != curDeviceName")</code></li><li class="L1" data-node-id="20250121171101-y5drlp5"><code class="lang-javascript"> bluetooth.setLocalName(deviceName)</code></li><li class="L2"><code class="lang-javascript"> }</code></li><li class="L3" data-node-id="20250121171101-9zct601"><code class="lang-javascript"> bluetooth.setBluetoothScanMode(4, 0)</code></li><li class="L4"><code class="lang-javascript"> LogUtil.debug(`${this.TAG} subscribeStateChange->stateChange return: true`)</code></li><li class="L5" data-node-id="20250121171101-snhjgz9"><code class="lang-javascript"> callback && callback(true)</code></li><li class="L6"><code class="lang-javascript"> break;</code></li><li class="L7" data-node-id="20250121171101-qlwf0jk"><code class="lang-javascript"> case bluetooth.BluetoothState.STATE_OFF:</code></li><li class="L8"><code class="lang-javascript"> LogUtil.debug(`${this.TAG} subscribeStateChange->stateChange return: false`)</code></li><li class="L9" data-node-id="20250121171101-l5j66pa"><code class="lang-javascript"> callback && callback(false)</code></li><li class="L0"><code class="lang-javascript"> break;</code></li><li class="L1" data-node-id="20250121171101-qf0sdeo"><code class="lang-javascript"> default:</code></li><li class="L2"><code class="lang-javascript"> break;</code></li><li class="L3" data-node-id="20250121171101-ix6afd9"><code class="lang-javascript"> }</code></li><li class="L4"><code class="lang-javascript"> })</code></li><li class="L5" data-node-id="20250121171101-kvczoc4"><code class="lang-javascript"> }</code></li></ol></pre>

7.之前遇到过各种场景导致设备名称不生效的，比如const.product.name属性配置被覆盖，settingsData未安装未被发现等等，如有类似问题可以一一排查。
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