Merge pull request #34 from w771854332/feat/better_systeminfo_get

在组件生命周期内调用getSystemInfo，优化首屏性能

src/swipe-action/index.ts

@@ -1,14 +1,13 @@
 import fmtUnit from '../_util/fmtUnit';
 
-const { windowWidth } = my.getSystemInfoSync();
 const isV2 = my.canIUse('movable-view.onTouchStart');
 
 Component({
   data: {
     leftPos: 0,
     swiping: false,
     holdSwipe: true,
-    viewWidth: windowWidth,
+    viewWidth: 0,
     x: 0,
     actionWidth: 0,
     transitionVal: 'none',
@@ -38,6 +37,7 @@ Component({
     }
     this.setBtnWidth();
     this.getSwipeHeight();
+    this.setWindowWidth();
   },
   didUpdate(_prevProps, prevData) {
     const { restore } = this.props;
@@ -59,6 +59,15 @@ Component({
     }
   },
   methods: {
+    setWindowWidth() {
+      my.getSystemInfo({
+        success: (res) => {
+          this.setData({
+            windowWidth: res.windowWidth,
+          });
+        },
+      });
+    },
     setBtnWidth() {
       my.createSelectorQuery()
         .select(`.am-swipe-right-${this.$id}`)

src/tabs/index.ts

@@ -1,7 +1,5 @@
 import fmtUnit from '../_util/fmtUnit';
 
-const { windowWidth } = my.getSystemInfoSync();
-
 Component({
   props: {
     className: '',
@@ -48,7 +46,7 @@ Component({
     elevatorContentTop: 0,
   },
   data: {
-    windowWidth,
+    windowWidth: 0,
     tabWidth: 0.25,
     autoplay: false,
     animation: false,
@@ -65,6 +63,8 @@ Component({
   didMount() {
     const { tabs, animation, hasSubTitle, elevator } = this.props;
 
+    this.setWindowWidth();
+
     if (hasSubTitle) {
       this.setData({
         capsule: true,
@@ -158,6 +158,15 @@ Component({
     }
   },
   methods: {
+    setWindowWidth() {
+      my.getSystemInfo({
+        success: (res) => {
+          this.setData({
+            windowWidth: res.windowWidth,
+          });
+        },
+      });
+    },
     getElevatorHeight(tabs) {
       for (let i = 0; i < tabs.length; i++) {
         my.createSelectorQuery()