java–Activity泄露了IntentReceiver–LollipopBrowserAccessibilityManager

概述我希望在这里找到一些帮助,因为我不熟悉Android中的BroadcastReceivers.这段代码打开WebView会将您重定向到登录页面,并在检测到URL更改后接收登录令牌.之后,活动将关闭.@OverrideprotectedvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceState)

我希望在这里找到一些帮助,因为我不熟悉Android中的broadcastReceivers.这段代码打开WebVIEw会将您重定向到登录页面,并在检测到URL更改后接收登录令牌.之后,活动将关闭.

@OverrIDeprotected 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@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@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取消注册哪个broadcastReceiver,因为我没有创建和初始化它.

谢谢你的帮助

解决方法:

当WebVIEw仍附加到其父视图时,在WebVIEw上调用destroy()时会发生此问题.

可以通过在调用destroy()之前首先从其父视图中删除WebvIEw来解决崩溃.

请注意,即使您没有手动调用destroy()(就像我的情况一样),这种崩溃仍然可能发生.我发现关键是你必须明确销毁一个WebVIEw(至少在一个片段中),因为AndroID不会为你处理这个问题,在这之前你必须从它的父视图中删除它.

例如,如果您有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Billy Brawner：https://brawner.tech/2017/12/03/webview-memory-leak/

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