navigator.bluetooth 无法使用打字稿
navigator.bluetooth not working in typescript
我正在尝试进行 chrome 蓝牙 API 调用,但我无法通过打字稿获得成功。我已经尝试在 html () 中应用文件,但也无济于事。
但是如果你复制代码并将其粘贴到浏览器控制台,代码 运行s 完美:(
控制台错误(如果 运行 Ts 中的代码):
DOMException: Must be handling a user gesture to show a permission request.
// Typescript/TS:
requestBluetooth() {
(window.navigator as any).bluetooth.requestDevice({ filters: [{ services: [this.PRINT_SERVICE_CODE] }] })
.then(device => {
return device.gatt.connect();
})
.then(server => {
return server.getPrimaryService(this.PRINT_SERVICE_CODE);
})
.then(service => {
return service.getCharacteristic('00002af1-0000-1000-8000-00805f9b34fb');
})
.then((characteristic) => {
this.sendTextData(characteristic);
})
.catch(error => console.log(error));
}
sendTextData(characteristic) {
// Get the bytes for the text
const encoder = new TextEncoder('UTF-8');
const text = encoder.encode('TESTETSETS' + '\u000A\u000D');
return characteristic.writeValue(text)
.then(() => console.log('Write done.'));
}
// 在控制台浏览器中工作:
const PRINT_SERVICE_CODE = '000018f0-0000-1000-8000-00805f9b34fb';
const sendTextData = (function (characteristic) {
const encoder = new TextEncoder('UTF-8');
const text = encoder.encode('TESTETSETS' + '\u000A\u000D');
return characteristic.writeValue(text)
.then(() => console.log('Write done.'));
})
const request = (function () {
navigator.bluetooth.requestDevice({ filters: [{ services: [PRINT_SERVICE_CODE] }] })
.then(device => {
return device.gatt.connect();
})
.then(server => {
return server.getPrimaryService(PRINT_SERVICE_CODE);
})
.then(service => {
return service.getCharacteristic('00002af1-0000-1000-8000-00805f9b34fb');
})
.then((characteristic) => {
this.sendTextData(characteristic);
})
.catch(error => console.log(error));
})
request();
//项目信息:
Angular CLI:6.0.8
节点:8.11.3
OS: linux x64
Angular: 6.0.9
requestBluetooth()
是否在用户手势(例如按钮单击)的事件处理程序中被调用?我现在找不到它,但我记得有一个与 Angular 相关的类似问题,其中某些类型的点击处理程序没有保留用户手势标记。
我正在尝试进行 chrome 蓝牙 API 调用,但我无法通过打字稿获得成功。我已经尝试在 html () 中应用文件,但也无济于事。 但是如果你复制代码并将其粘贴到浏览器控制台,代码 运行s 完美:(
控制台错误(如果 运行 Ts 中的代码):
DOMException: Must be handling a user gesture to show a permission request.
// Typescript/TS:
requestBluetooth() {
(window.navigator as any).bluetooth.requestDevice({ filters: [{ services: [this.PRINT_SERVICE_CODE] }] })
.then(device => {
return device.gatt.connect();
})
.then(server => {
return server.getPrimaryService(this.PRINT_SERVICE_CODE);
})
.then(service => {
return service.getCharacteristic('00002af1-0000-1000-8000-00805f9b34fb');
})
.then((characteristic) => {
this.sendTextData(characteristic);
})
.catch(error => console.log(error));
}
sendTextData(characteristic) {
// Get the bytes for the text
const encoder = new TextEncoder('UTF-8');
const text = encoder.encode('TESTETSETS' + '\u000A\u000D');
return characteristic.writeValue(text)
.then(() => console.log('Write done.'));
}
// 在控制台浏览器中工作:
const PRINT_SERVICE_CODE = '000018f0-0000-1000-8000-00805f9b34fb';
const sendTextData = (function (characteristic) {
const encoder = new TextEncoder('UTF-8');
const text = encoder.encode('TESTETSETS' + '\u000A\u000D');
return characteristic.writeValue(text)
.then(() => console.log('Write done.'));
})
const request = (function () {
navigator.bluetooth.requestDevice({ filters: [{ services: [PRINT_SERVICE_CODE] }] })
.then(device => {
return device.gatt.connect();
})
.then(server => {
return server.getPrimaryService(PRINT_SERVICE_CODE);
})
.then(service => {
return service.getCharacteristic('00002af1-0000-1000-8000-00805f9b34fb');
})
.then((characteristic) => {
this.sendTextData(characteristic);
})
.catch(error => console.log(error));
})
request();
//项目信息:
Angular CLI:6.0.8
节点:8.11.3
OS: linux x64
Angular: 6.0.9
requestBluetooth()
是否在用户手势(例如按钮单击)的事件处理程序中被调用?我现在找不到它,但我记得有一个与 Angular 相关的类似问题,其中某些类型的点击处理程序没有保留用户手势标记。