活动已泄露IntentReceiver语言 - LollipopBrowserAccessibilityManager

Question

我希望在这里找到一些帮助，因为我不熟悉Android中的BroadcastReceivers。这段代码将打开 WebView 重定向到登录页面，并在检测到 URL 更改后收到登录令牌。之后，活动将关闭。

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
mLoginWebView = (WebView) findViewById(R.id.webview_login);
redirectUrl = getString(R.string.app_redirect_url);

//RECEIVE PLATFORM ID
Bundle bundle = getIntent().getExtras();
if(bundle != null){
platform = bundle.getInt(ConstantsHelper.LOGIN_EXTRA_TOKEN);
}
mLoginWebView.setWebViewClient(new WebViewClient() {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
Log.d(TAG, "URL change to to " + url + " was detected");
if (url.contains(redirectUrl) || url.contains("passport.twitch.tv")) {
Log.d(TAG, "Login with platform " + platform);
switch (platform){
//GET INSTAGRAM AUTH TOKEN
case ConstantsHelper.ID_INSTAGRAM:{
String accessToken = url.split("=")[1];
SharedPreferenceHelper.putString(ConstantsHelper.PREF_INST_ACCESS_TOKEN, accessToken);
NetworkManager.getInstance().catchTokens();
}
//GET TWITCH AUTH TOKEN
case ConstantsHelper.ID_TWITCH:{
String accessToken = url.substring(url.indexOf("=") + 1, url.indexOf("&"));
SharedPreferenceHelper.putString(ConstantsHelper.PREF_TWITCH_ACCESS_TOKEN, accessToken);
NetworkManager.getInstance().catchTokens();
}
}
finish(); //Activity is closed
return true;
}
return false;
}

});
switch (platform){
case 1: mLoginWebView.loadUrl(NetworkManager.getInstance().getInstagramAuthUrl(getApplicationContext()));
case 4: mLoginWebView.loadUrl(NetworkManager.getInstance().getTwitchAuthUrl(getApplicationContext()));
}

}

没有任何反应，LogCat显示此错误：

Activity com.maximutan.socialmedia_feed_merger.activities.LoginActivity has leaked IntentReceiver org.chromium.content.browser.accessibility.LollipopBrowserAccessibilityManager$1@25014a that was originally registered here. Are you missing a call to unregisterReceiver()?
android.app.IntentReceiverLeaked: Activity com.maximutan.socialmedia_feed_merger.activities.LoginActivity has leaked IntentReceiver org.chromium.content.browser.accessibility.LollipopBrowserAccessibilityManager$1@25014a that was originally registered here. Are you missing a call to unregisterReceiver()?
at android.app.LoadedApk$ReceiverDispatcher.<init>(LoadedApk.java:962)
at android.app.LoadedApk.getReceiverDispatcher(LoadedApk.java:763)
at android.app.ContextImpl.registerReceiverInternal(ContextImpl.java:1179)
at android.app.ContextImpl.registerReceiver(ContextImpl.java:1159)
at android.app.ContextImpl.registerReceiver(ContextImpl.java:1153)
at android.content.ContextWrapper.registerReceiver(ContextWrapper.java:554)
at android.content.ContextWrapper.registerReceiver(ContextWrapper.java:554)
at org.chromium.content.browser.accessibility.LollipopBrowserAccessibilityManager.<init>(LollipopBrowserAccessibilityManager.java:3)
at org.chromium.content.browser.accessibility.BrowserAccessibilityManager.create(BrowserAccessibilityManager.java:2)
at org.chromium.base.SystemMessageHandler.nativeDoRunLoopOnce(Native Method)
at org.chromium.base.SystemMessageHandler.handleMessage(
SystemMessageHandler.java:7)  
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5527)
,at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(
ZygoteInit.java:730)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:620)

我的问题是我不知道我必须注销哪个广播接收器，因为我还没有创建和初始化一个。

感谢您的帮助

Answer 1

当Web 视图仍附加到其父视图时，在 Web 视图上调用destroy()时，会出现此问题。

可以通过在调用 Web 视图之前先从其父视图中删除 Web 视图来解决崩溃destroy()。

请注意，即使您没有手动调用destroy()(就像我的情况一样(，此崩溃仍然可能发生。我发现关键是您必须显式销毁WebView(至少在片段中(，因为Android不会为您处理此问题，并且在此之前，您必须将其从其父视图中删除。

例如，如果您有一个 WebView 片段：

@Override
public void onDestroyView() {
super.onDestroyView();
// destroy the WebView completely
if (mWebView != null) {
// the WebView must be removed from the view hierarchy before calling destroy
// to prevent a memory leak
// See https://developer.android.com/reference/android/webkit/WebView.html#destroy%28%29
((ViewGroup) mWebView.getParent()).removeView(mWebView);
mWebView.removeAllViews();
mWebView.destroy();
mWebView = null;
}
}

完全归功于比利·布朗纳：https://brawner.tech/2017/12/03/webview-memory-leak/

Answer 2

您是否使用以下任何WebSettings？

settings.setAllowContentAccess(true);
settings.setAllowFileAccessFromFileURLs(true);
settings.setAllowUniversalAccessFromFileURLs(true);
settings.setAllowFileAccess(true);

我发现通过禁用这些选项(我实际上在我的实例中不需要它们(，错误消失了。我猜它与其中一个所需的兼容性库有关。