可以通过onTouchTestDone接口阻止手势参与识别，达到禁止缩放的功能。
完整示例参考如下：
import { pdfService, pdfViewManager, PdfView } from '@kit.PDFKit';
import { fileIo } from '@kit.CoreFileKit';
import { hilog } from '@kit.PerformanceAnalysisKit';
import { BusinessError } from '@kit.BasicServicesKit';
const TAG = 'PDFView';
@Entry
@Component
struct PDFView {
private controller: pdfViewManager.PdfController = new pdfViewManager.PdfController();
aboutToAppear(): void {
let context = this.getUIContext().getHostContext();
if (!context) {
hilog.error(0x0000, TAG, 'Get context failed');
return;
}
let dir: string = context.filesDir;
// 确保rawfile里面有pdf文件
let filePath: string = dir + '/pdf_reference.pdf';
try {
fileIo.accessSync(filePath);
let content: Uint8Array = context.resourceManager.getRawFileContentSync('rawfile/pdf_reference.pdf');
let fdSand =
fileIo.openSync(filePath, fileIo.OpenMode.WRITE_ONLY | fileIo.OpenMode.CREATE | fileIo.OpenMode.TRUNC);
fileIo.writeSync(fdSand.fd, content.buffer);
fileIo.closeSync(fdSand.fd);
} catch (e) {
let err = e as BusinessError;
hilog.error(0x0000, TAG, `fs operation failed, error code: ${err.code}, error message: ${err.message}`);
}
(async () => {
let loadResult: pdfService.ParseResult = await this.controller.loadDocument(filePath);
if (loadResult === pdfService.ParseResult.PARSE_SUCCESS) {
hilog.info(0x0000, TAG, 'PDF load successfully');
}
})();
}
@Builder
Back() {
Button('返回')
.width(100)
.fontSize(20)
.padding({ left: 30, top: 8 })
.margin({ left: 10, top: 10 })
.onClick(() => {
this.getUIContext().getRouter().back({ url: 'pages/Index' });
})
}
build() {
Row() {
Stack() {
PdfView({
controller: this.controller,
pageFit: pdfService.PageFit.FIT_WIDTH,
showScroll: true
})
.id('pdfview_app_view')
.layoutWeight(1)
.overlay(this.Back(), {
align: Alignment.TopStart
})
}.onTouchTestDone((event, recognizers) => {
for (let i = 0; i < recognizers.length; i++) {
let recognizer = recognizers[i];
// 根据类型禁用捏合手势
if (recognizer.getType() == GestureControl.GestureType.PINCH_GESTURE) {
recognizer.preventBegin();
}
}
})
}
.width('100%')
.height('100%')
}
}