颤振（ChromeSafariBrowser._throwIsAlreadyOpened 错误）

Question

我正在使用一个名为 flutter_inappbrowser 1.2.1 的库。在这个库的帮助下，我打开了一个浏览器，它第一次运行良好，但之后如果我们再次尝试打开浏览器，它会抛出错误

[ERROR:flutter/lib/ui/ui_dart_state.cc(148)] Unhandled Exception: Exception: [Error: Cannot open https://www.abcd.com/xyzal.html! The browser is already opened.]

下面提供了用于操作的代码。

Center(
child: InkWell(
onTap: () {
chromeSafariBrowser
    .open(url, options: {
"addShareButton": true,
"toolbarBackgroundColor": "#FFFFFF",
"dismissButtonStyle": 1,
"preferredBarTintColor": "#FFFFFF",
"instantAppsEnabled": false
}, optionsFallback: {
"toolbarTopBackgroundColor": "#FFFFFF",
"closeButtonCaption": "Close"
});
},
child: Text(
'Read More...',
style: TextStyle(
color: Color(0xFF38969A),
fontSize: 16.0,
decoration: TextDecoration.underline,
fontWeight: FontWeight.bold),
),
))


class MyInAppBrowser extends InAppBrowser {
  @override
  Future onLoadStart(String url) async {
    print("\n\nStarted $url\n\n");
  }

  @override
  Future onLoadStop(String url) async {
    print("\n\nStopped $url\n\n");
  }

  @override
  void onLoadError(String url, int code, String message) {
    print("\n\nCan't load $url.. Error: $message\n\n");
  }

  @override
  void onExit() {
    print("\n\nBrowser closed!\n\n");
  }
}

MyInAppBrowser inAppBrowserFallback = new MyInAppBrowser();

class MyChromeSafariBrowser extends ChromeSafariBrowser {
  MyChromeSafariBrowser(browserFallback) : super(browserFallback);

  @override
  void onOpened() {
    print("ChromeSafari browser opened");
  }

  @override
  void onLoaded() {
    print("ChromeSafari browser loaded");
  }

  @override
  void onClosed() {
    print("ChromeSafari browser closed");
  }
}

MyChromeSafariBrowser chromeSafariBrowser =
    new MyChromeSafariBrowser(inAppBrowserFallback);

任何帮助将不胜感激，谢谢。

Answer 1

在您的 onTap 中，您可以检查浏览器是否隐藏（打开）然后显示它而不是打开它：

onTap: () async {

if (chromeSafariBrowser.isOpened()) {
await chromeSafariBrowser.show();
return;
}

await chromeSafariBrowser
    .open(url, options: {
            "addShareButton": true,
            "toolbarBackgroundColor": "#FFFFFF",
            "dismissButtonStyle": 1,
            "preferredBarTintColor": "#FFFFFF",
            "instantAppsEnabled": false
    }, optionsFallback: {
        "toolbarTopBackgroundColor": "#FFFFFF",
        "closeButtonCaption": "Close"
   });

或者如果您想重新打开它而不是再次显示它

onTap: () async {

if (chromeSafariBrowser.isOpened()) 
    await chromeSafariBrowser.close();
await chromeSafariBrowser
    .open(url, options: {
            "addShareButton": true,
            "toolbarBackgroundColor": "#FFFFFF",
            "dismissButtonStyle": 1,
            "preferredBarTintColor": "#FFFFFF",
            "instantAppsEnabled": false
    }, optionsFallback: {
        "toolbarTopBackgroundColor": "#FFFFFF",
        "closeButtonCaption": "Close"
   });

Answer 2

我找到了解决方案，将其张贴在这里，因为它可能会在将来对某人有所帮助。

解决方法是不调用 chromeSafariBrowser.open(...) 直接调用 MyChromeSafariBrowser(inAppBrowserFallback).open(...)。将创建新实例，一切都会顺利进行。不知道这个方案对不对

例如：

onTap: ()  {
MyChromeSafariBrowser(inAppBrowserFallback)
    .open(newsData.url, options: {
"addShareButton": true,
"toolbarBackgroundColor": "#FFFFFF",
"dismissButtonStyle": 1,
"preferredBarTintColor": "#FFFFFF",
"instantAppsEnabled": false
}, optionsFallback: {
"toolbarTopBackgroundColor": "#FFFFFF",
"closeButtonCaption": "Close"
});
},

颤振（ChromeSafariBrowser._throwIsAlreadyOpened 错误）

Flutter (ChromeSafariBrowser._throwIsAlreadyOpened error)

browser

inappbrowser

flutter