harmony 鸿蒙Device Management Development
Device Management Development
How do I obtain the DPI of a device?
Applicable to: OpenHarmony SDK 3.2.2.5, stage model of API version 9
Import the \@ohos.display module and call the getDefaultDisplay API.
Example:
import display from '@ohos.display';
display.getDefaultDisplay((err, data) => {
if (err.code) {
console.error('Test Failed to obtain the default display object. Code: ' + JSON.stringify(err));
return;
}
console.info('Test Succeeded in obtaining the default display object. Data:' + JSON.stringify(data));
console.info('Test densityDPI:' + JSON.stringify(data.densityDPI));
});
How do I obtain the type of the device where the application is running?
Applicable to: OpenHarmony SDK 3.2.2.5, stage model of API version 9
Import the \@ohos.deviceInfo module and call the deviceInfo.deviceType API.
For details, see Device Information.
How do I obtain the system version of a device?
Applicable to: OpenHarmony SDK 3.2.5.5, stage model of API version 9
Use the osFullName attribute of the deviceInfo object.
How do I obtain the UDID of an OpenHarmony device?
Applicable to: OpenHarmony SDK3.0, stage model of API version 9
To obtain the UDID of the connected device, run the hdc shell bm get –udid command.
For details about how to obtain the UDID from code, see udid.
How do I develop a shortcut key function?
Applicable to: OpenHarmony SDK 3.2.6.5, stage model of API version 9
To develop a shortcut key function, use the APIs in Input Consumer.
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