修复蓝牙传输数据

components/TextToHex/textToDotMatrixFor7305.vue

@@ -1,6 +1,6 @@
 <template>
 	<view>
-		<canvas type="2d" canvas-id="reusableCanvas" :width="currentCanvasWidth" :height="currentCanvasHeight"
+		<canvas canvas-id="reusableCanvas" :width="currentCanvasWidth" :height="currentCanvasHeight"
 			class="offscreen-canvas"></canvas>
 	</view>
 </template>
@@ -149,28 +149,26 @@
 					// 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, () => {
-							setTimeout(() => {
+							uni.canvasGetImageData({
-								uni.canvasGetImageData({
+								canvasId: 'reusableCanvas',
-									canvasId: 'reusableCanvas',
+								x: 0,
-									x: 0,
+								y: 0,
-									y: 0,
+								width: this.currentCanvasWidth,
-									width: this.currentCanvasWidth,
+								height: this.currentCanvasHeight,
-									height: this.currentCanvasHeight,
+								success: res => {
-									success: res => {
+									result = {
-										result = {
+										line: textLine,
-											line: textLine,
+										pixelData: res.data,
-											pixelData: res.data,
+										width: this.currentCanvasWidth,
-											width: this.currentCanvasWidth,
+										height: this.currentCanvasHeight
-											height: this.currentCanvasHeight
+									};
-										};
+									resolve();
-										resolve();
+								},
-									},
+								fail: err => {
-									fail: err => {
+									// console.error(`处理第${i+1}行失败:`, err);
-										// console.error(`处理第${i+1}行失败:`, err);
+									reject(err)
-										reject(err)
+								}
-									}
+							});
-								});
-							}, 100);
 						});
 					});
 
@@ -202,6 +200,5 @@
 		position: fixed;
 		left: -9999px;
 		top: -9999px;
-		visibility: hidden;
 	}
 </style>