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用户升级了ios最新版系统后，导致了现有小程序签名无法使用了，基础库是3.3.4
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你好，麻烦提供出现问题的具体机型、微信版本号、系统版本号，以及能复现问题的代码片段（https://developers.weixin.qq.com/miniprogram/dev/devtools/minicode.html）
你好，麻烦通过点击下方“反馈信息”按钮，提供出现问题的。
微信版本 8.0.48 ios17.4
<canvas
class="handWriting"
disable-scroll="true"
@touchstart="uploadScaleStart"
@touchmove="uploadScaleMove"
@touchend="uploadScaleEnd"
canvas-id="handWriting"
>
</canvas
uploadScaleMove: function (e) {
if (e.type != "touchmove") return false;
if (e.cancelable) {
if (!e.defaultPrevented) {
e.preventDefault();
}
let point = {
x: e.touches[0].x,
y: e.touches[0].y,
if (point.y < this.cutArea.top) {
this.cutArea.top = point.y;
if (point.y < 0) this.cutArea.top = 0;
if (point.x > this.cutArea.right) {
this.cutArea.right = point.x;
if (this.canvasWidth - point.x <= 0) {
this.cutArea.right = this.canvasWidth;
if (point.y > this.cutArea.bottom) {
this.cutArea.bottom = point.y;
if (this.canvasHeight - point.y <= 0) {
this.cutArea.bottom = this.canvasHeight;
if (point.x < this.cutArea.left) {
this.cutArea.left = point.x;
if (point.x < 0) this.cutArea.left = 0;
this.lastPoint = this.currentPoint;
this.currentPoint = point;
let currentLine = this.currentLine;
currentLine.unshift({
time: new Date().getTime(),
dis: this.distance(this.currentPoint, this.lastPoint),
x: point.x,
y: point.y,
});
this.pointToLine(currentLine);
},
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你好，麻烦提供出现问题的具体机型、微信版本号、系统版本号，以及能复现问题的代码片段（https://developers.weixin.qq.com/miniprogram/dev/devtools/minicode.html）
微信版本 8.0.48 ios17.4
<canvas
class="handWriting"
disable-scroll="true"
@touchstart="uploadScaleStart"
@touchmove="uploadScaleMove"
@touchend="uploadScaleEnd"
canvas-id="handWriting"
>
</canvas
>
uploadScaleMove: function (e) {
if (e.type != "touchmove") return false;
if (e.cancelable) {
if (!e.defaultPrevented) {
e.preventDefault();
}
}
let point = {
x: e.touches[0].x,
y: e.touches[0].y,
}
if (point.y < this.cutArea.top) {
this.cutArea.top = point.y;
}
if (point.y < 0) this.cutArea.top = 0;
if (point.x > this.cutArea.right) {
this.cutArea.right = point.x;
}
if (this.canvasWidth - point.x <= 0) {
this.cutArea.right = this.canvasWidth;
}
if (point.y > this.cutArea.bottom) {
this.cutArea.bottom = point.y;
}
if (this.canvasHeight - point.y <= 0) {
this.cutArea.bottom = this.canvasHeight;
}
if (point.x < this.cutArea.left) {
this.cutArea.left = point.x;
}
if (point.x < 0) this.cutArea.left = 0;
this.lastPoint = this.currentPoint;
this.currentPoint = point;
let currentLine = this.currentLine;
currentLine.unshift({
time: new Date().getTime(),
dis: this.distance(this.currentPoint, this.lastPoint),
x: point.x,
y: point.y,
});
this.pointToLine(currentLine);
},