修复传输时序问题

components/TextToHex/textToDotMatrixFor7305.vue

@@ -149,26 +149,28 @@
 					// 5. 异步绘制并获取像素数据（串行处理避免冲突）
 					await new Promise((resolve, reject) => {
 						ctx.draw(false, () => {
-							uni.canvasGetImageData({
-								canvasId: 'reusableCanvas',
-								x: 0,
-								y: 0,
-								width: this.currentCanvasWidth,
-								height: this.currentCanvasHeight,
-								success: res => {
-									result = {
-										line: textLine,
-										pixelData: res.data,
-										width: this.currentCanvasWidth,
-										height: this.currentCanvasHeight
-									};
-									resolve();
-								},
-								fail: err => {
-									// console.error(`处理第${i+1}行失败:`, err);
-									reject(err)
-								}
-							});
+							setTimeout(() => {
+								uni.canvasGetImageData({
+									canvasId: 'reusableCanvas',
+									x: 0,
+									y: 0,
+									width: this.currentCanvasWidth,
+									height: this.currentCanvasHeight,
+									success: res => {
+										result = {
+											line: textLine,
+											pixelData: res.data,
+											width: this.currentCanvasWidth,
+											height: this.currentCanvasHeight
+										};
+										resolve();
+									},
+									fail: err => {
+										// console.error(`处理第${i+1}行失败:`, err);
+										reject(err)
+									}
+								});
+							}, 100);
 						});
 					});