解决extjs不能在android8.0上打开的问题

sencha extjs 6.5.3版本已解决此问题

原因

Android 8.0 的 浏览器 UserAgent 如下：

写道

Mozilla/5.0 (Linux; Android 8.0.0; Pixel C Build/OPR1.170623.026; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/62.0.3202.84 Safari/537.36

 Sencha Touch / ExtJS 6 的浏览器识别逻辑，把它认为了是 Opera 浏览器，因为 Sencha 的判断逻辑如下：

    if (userAgent.match(/FB/) && browserName === 'Other') {
        browserName = browserNames.safari;
        engineName = engineNames.webkit;
    }
    if (userAgent.match(/Android.*Chrome/g)) {
        browserName = 'ChromeMobile';
    }
    if (userAgent.match(/OPR/)) {
        browserName = 'Opera';
        browserMatch = userAgent.match(/OPR\/(\d+.\d+)/);
        browserVersion = new Ext.Version(browserMatch[1]);
    }

 需要修改成这样

    if (userAgent.match(/FB/) && browserName === 'Other') {
        browserName = browserNames.safari;
        engineName = engineNames.webkit;
    }
    if (userAgent.match(/Android.*Chrome/g)) {
        browserName = 'ChromeMobile';
    }
    // bug fix: Android Oreo Chrome Browser detected as Opera
    else {
        browserMatch = userAgent.match(/OPR\/(\d+.\d+)/);
        if (browserMatch) {
            browserName = 'Opera';
            browserVersion = new Ext.Version(browserMatch[1]);
        }
    }

 需要修改好几个文件

yourApp\ext\build\ext-all-debug.js
yourApp\ext\build\ext-modern-all-debug.js
yourApp\ext\packages\core\src\env\Browser.js