SysUtils：ApplicationStatus（WebView）中的ApplicationContext为空

我可以在基于 WebView 的应用程序启动时看到一些奇怪的东西。它根本不影响应用程序，但我很好奇为什么会出现错误。没有任何崩溃，一切似乎都很好，但是错误......

这是日志猫

Loading com.google.android.webview version 42.0.2311.137 (code 2311137)
I/LibraryLoader﹕ Time to load native libraries: 2 ms (timestamps 3347-3349)
I/LibraryLoader﹕ Expected native library version number "",actual native library version number ""
V/WebViewChromiumFactoryProvider﹕ Binding Chromium to main looper Looper (main, tid 1) {2d3b4b2c}
I/LibraryLoader﹕ Expected native library version number "",actual native library version number ""
I/chromium﹕ [INFO:library_loader_hooks.cc(112)] Chromium logging enabled: level = 0, default verbosity = 0
I/BrowserStartupController﹕ Initializing chromium process, singleProcess=true
W/art﹕ Attempt to remove local handle scope entry from IRT, ignoring
E/SysUtils﹕ ApplicationContext is null in ApplicationStatus
W/chromium﹕ [WARNING:resource_bundle.cc(286)] locale_file_path.empty()
I/chromium﹕ [INFO:aw_browser_main_parts.cc(63)] Load from apk succesful, fd=34 off=6850672 len=3697
I/chromium﹕ [INFO:aw_browser_main_parts.cc(76)] Loading webviewchromium.pak from, fd:35 off:7953036 len:1161174
I/Adreno-EGL﹕ <qeglDrvAPI_eglInitialize:379>: QUALCOMM Build: 01/15/15, ab0075f, Id3510ff6dc
W/AudioManagerAndroid﹕ Requires BLUETOOTH permission
W/chromium﹕ [WARNING:data_reduction_proxy_config.cc(150)] SPDY proxy OFF at startup
W/art﹕ Attempt to remove local handle scope entry from IRT, ignoring
W/AwContents﹕ onDetachedFromWindow called when already detached. Ignoring
I/GAv4﹕ Google Analytics 4.5.0/7327 is starting up. To enable debug logging on a device run:
    adb shell setprop log.tag.GAv4 DEBUG
    adb logcat -s GAv4

我想错误来自这里：https://chromium.googlesource.com/chromium/src/base/+/master/android/java/src/org/chromium/base/SysUtils.java https://chromium.googlesource.com/chromium/src/base/+/master/android/java/src/org/chromium/base/SysUtils.java

WebView初始化的几行

...
// load url in webView
webView.loadUrl(webViewUrl);
webView.setWebViewClient(new MyAppWebViewClient());

// implement WebChromeClient inner class
// we will define openFileChooser for select file from camera
webView.setWebChromeClient(new WebChromeClient() {
...

这是怎么回事？

这里发生的事情是：

ApplicationStatus 尚未初始化，因此无法从中获取上下文。这是完全自然的情况，因此不应出现错误。将此记录为错误是编码员的夸大其词。

However:

这不会造成任何真正的问题，因为该函数尝试获取上下文对象只是为了执行另一项检查来评估设备的性能。由于它有时无法调用“isLowRamDevice()”，因此它只会继续执行其余的检查。因此，最坏的情况是此时无法检测到低端手机，并将进行后续检查。

这也是完全正常的"I see this error in a Lollipop device (Nexus 10) but not in a JellyBean device"，因为如果该函数检测到低于 KitKat 的任何内容，它就会提前返回。 (// Any pre-KitKat device cannot be considered 'low-end')