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>
@@ -149,7 +149,6 @@
 					// 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({
 								canvasId: 'reusableCanvas',
 								x: 0,
@@ -170,7 +169,6 @@
 									reject(err)
 								}
 							});
-							}, 100);
 						});
 					});
 
@@ -202,6 +200,5 @@
 		position: fixed;
 		left: -9999px;
 		top: -9999px;
-		visibility: hidden;
 	}
 </style>