fix: 回退安卓 measureText 功能

src/core/service/api/context/canvas.js

@@ -333,18 +333,9 @@ export class CanvasContext {
     let width = 0
     if (__PLATFORM__ === 'h5') {
       width = measureText(text, font)
-    } else {
+    } else if (plus.os.name.toLowerCase() === 'ios') {
       const webview = plus.webview.all().find(webview => webview.getURL().endsWith('www/__uniappview.html'))
-      if (webview) {
-        for (let index = 0; index < 5; index++) {
-          width = Number(webview.evalJSSync(`(${measureText.toString()})(${JSON.stringify(text)},${JSON.stringify(font)})`))
-          // 安卓部分情况会计算失败，进行重试
-          if (!isNaN(width)) {
-            width = 0
-            break
-          }
-        }
-      }
+      width = Number(webview.evalJSSync(`(${measureText.toString()})(${JSON.stringify(text)},${JSON.stringify(font)})`))
     }
     return new TextMetrics(width)
   }