Java 即使未使用任何服务，泄漏的窗口异常_Java_Android_Service

Java 即使未使用任何服务，泄漏的窗口异常
java android service
Java 即使未使用任何服务，泄漏的窗口异常,java,android,service,Java,Android,Service,我有一个很奇怪的问题我的日志中不断出现这种崩溃，但奇怪的是，我的应用程序与文本到语音的转换无关。不仅仅是这个活动，我的整个应用程序根本不使用它 08-04 03:47:19.321: E/ActivityThread(24755): Activity com.lablabla.similarsearch.WebViewActivity has leaked ServiceConnection android.speech.tts.TextToSpeech$Connection@443065c0
我有一个很奇怪的问题
我的日志中不断出现这种崩溃，但奇怪的是，我的应用程序与
文本到语音的转换无关。不仅仅是这个活动，我的整个应用程序根本不使用它
08-04 03:47:19.321: E/ActivityThread(24755): Activity com.lablabla.similarsearch.WebViewActivity has leaked ServiceConnection android.speech.tts.TextToSpeech$Connection@443065c0 that was originally bound here
08-04 03:47:19.321: E/ActivityThread(24755): android.app.ServiceConnectionLeaked: Activity com.lablabla.similarsearch.WebViewActivity has leaked ServiceConnection android.speech.tts.TextToSpeech$Connection@443065c0 that was originally bound here
08-04 03:47:19.321: E/ActivityThread(24755):    at android.app.LoadedApk$ServiceDispatcher.<init>(LoadedApk.java:974)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.app.LoadedApk.getServiceDispatcher(LoadedApk.java:868)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.app.ContextImpl.bindServiceAsUser(ContextImpl.java:1452)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.app.ContextImpl.bindService(ContextImpl.java:1440)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.content.ContextWrapper.bindService(ContextWrapper.java:496)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.speech.tts.TextToSpeech.connectToEngine(TextToSpeech.java:685)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.speech.tts.TextToSpeech.initTts(TextToSpeech.java:655)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.speech.tts.TextToSpeech.<init>(TextToSpeech.java:608)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.webkit.AccessibilityInjector$TextToSpeechWrapper.<init>(AccessibilityInjector.java:682)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.webkit.AccessibilityInjector.addTtsApis(AccessibilityInjector.java:483)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.webkit.AccessibilityInjector.addAccessibilityApisIfNecessary(AccessibilityInjector.java:168)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.webkit.AccessibilityInjector.updateJavaScriptEnabled(AccessibilityInjector.java:418)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.webkit.WebViewClassic.updateJavaScriptEnabled(WebViewClassic.java:1682)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.webkit.WebSettingsClassic.setJavaScriptEnabled(WebSettingsClassic.java:1125)
08-04 03:47:19.321: E/ActivityThread(24755):    at com.lablabla.similarsearch.WebViewActivity.onCreate(WebViewActivity.java:24)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.app.Activity.performCreate(Activity.java:5133)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2175)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.app.ActivityThread.access$600(ActivityThread.java:141)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.os.Handler.dispatchMessage(Handler.java:99)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.os.Looper.loop(Looper.java:137)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.app.ActivityThread.main(ActivityThread.java:5103)
08-04 03:47:19.321: E/ActivityThread(24755):    at java.lang.reflect.Method.invokeNative(Native Method)
08-04 03:47:19.321: E/ActivityThread(24755):    at java.lang.reflect.Method.invoke(Method.java:525)
08-04 03:47:19.321: E/ActivityThread(24755):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
08-04 03:47:19.321: E/ActivityThread(24755):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
08-04 03:47:19.321: E/ActivityThread(24755):    at dalvik.system.NativeStart.main(Native Method)

我的logcat里一直有这样的碰撞，但奇怪的是这是我的
该应用程序与文本到语音的转换无关。不仅仅是这个
活动，我的整个应用程序根本不使用它
08-04 03:47:19.321: E/ActivityThread(24755): Activity com.lablabla.similarsearch.WebViewActivity has leaked ServiceConnection android.speech.tts.TextToSpeech$Connection@443065c0 that was originally bound here
08-04 03:47:19.321: E/ActivityThread(24755): android.app.ServiceConnectionLeaked: Activity com.lablabla.similarsearch.WebViewActivity has leaked ServiceConnection android.speech.tts.TextToSpeech$Connection@443065c0 that was originally bound here
08-04 03:47:19.321: E/ActivityThread(24755):    at android.app.LoadedApk$ServiceDispatcher.<init>(LoadedApk.java:974)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.app.LoadedApk.getServiceDispatcher(LoadedApk.java:868)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.app.ContextImpl.bindServiceAsUser(ContextImpl.java:1452)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.app.ContextImpl.bindService(ContextImpl.java:1440)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.content.ContextWrapper.bindService(ContextWrapper.java:496)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.speech.tts.TextToSpeech.connectToEngine(TextToSpeech.java:685)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.speech.tts.TextToSpeech.initTts(TextToSpeech.java:655)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.speech.tts.TextToSpeech.<init>(TextToSpeech.java:608)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.webkit.AccessibilityInjector$TextToSpeechWrapper.<init>(AccessibilityInjector.java:682)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.webkit.AccessibilityInjector.addTtsApis(AccessibilityInjector.java:483)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.webkit.AccessibilityInjector.addAccessibilityApisIfNecessary(AccessibilityInjector.java:168)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.webkit.AccessibilityInjector.updateJavaScriptEnabled(AccessibilityInjector.java:418)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.webkit.WebViewClassic.updateJavaScriptEnabled(WebViewClassic.java:1682)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.webkit.WebSettingsClassic.setJavaScriptEnabled(WebSettingsClassic.java:1125)
08-04 03:47:19.321: E/ActivityThread(24755):    at com.lablabla.similarsearch.WebViewActivity.onCreate(WebViewActivity.java:24)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.app.Activity.performCreate(Activity.java:5133)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2175)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.app.ActivityThread.access$600(ActivityThread.java:141)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.os.Handler.dispatchMessage(Handler.java:99)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.os.Looper.loop(Looper.java:137)
08-04 03:47:19.321: E/ActivityThread(24755):    at android.app.ActivityThread.main(ActivityThread.java:5103)
08-04 03:47:19.321: E/ActivityThread(24755):    at java.lang.reflect.Method.invokeNative(Native Method)
08-04 03:47:19.321: E/ActivityThread(24755):    at java.lang.reflect.Method.invoke(Method.java:525)
08-04 03:47:19.321: E/ActivityThread(24755):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
08-04 03:47:19.321: E/ActivityThread(24755):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
08-04 03:47:19.321: E/ActivityThread(24755):    at dalvik.system.NativeStart.main(Native Method)

你的应用程序确实与此无关
但当你打电话时：
webView.getSettings().setJavaScriptEnabled(true);

执行WebViewClassic.updateJavaScriptEnabled（布尔）方法：
void updateJavaScriptEnabled(boolean enabled) {
    if (isAccessibilityInjectionEnabled()) {

 ==>>>> // Call placed to AccessibilityInjector.updateJavaScriptEnabled(boolean)
        getAccessibilityInjector().updateJavaScriptEnabled(enabled);
    }
}

在这里，isAccessibilityInjectionEnabled（）
在设备的情况下返回true
。它检索当前启用的辅助功能服务列表，并提供/supportAccessibilityServiceInfo.FEEDBACK\u
。如果此列表非空，则返回true

向上移动堆栈跟踪：
android.webkit.accessibilityInputor.addTtsApis（）
最终创建一个TextToSpeech
对象
问题是：TextToSpeech.connectToEngine（）
使用上下文调用bindService（）。上下文是活动的上下文（从WebView传递）。我相信当WebViewActivity
启动时，Logcat会显示以下内容（或类似内容）：
成功绑定到com.google.android.tts
假设：当您的活动在屏幕旋转时被销毁并重新创建时，TTS服务仍然被绑定，而上下文不再有效。这就是例外所指的
我尝试了以下方法来验证我的假设：
我没有用xml定义WebView，而是在onCreate（）中动态创建它：
请注意，我使用了应用程序的上下文来代替活动的上下文（this）。上下文在方向更改时保持有效，因此不会引发异常
要确认启用了一个（或多个）辅助功能服务，请将此代码添加到活动的onCreate（）
AccessibilityManager am=（AccessibilityManager）
getSystemService（无障碍服务）；
列表。
您可以添加此代码段以避免此服务连接泄漏异常：
class YourActivity extends Activity {
WebView yourWebView;

    @Override
    public void onDestroy() {

        if (yourWebView != null) {
            yourWebView.getSettings().setJavaScriptEnabled(false);
        }
}

yourWebView.getSettings（）.setJavaScriptEnabled（false）；将触发AccessibilityInjector的调用。（）
其中：
private void removeTtsApis() {
    if (mTextToSpeech != null) {
        mTextToSpeech.stop();
        mTextToSpeech.shutdown();
        mTextToSpeech = null;
    }

    mWebView.removeJavascriptInterface(ALIAS_TTS_JS_INTERFACE);
}

mTextToSpeech.shutdown（）只是关键点。
你知道这是什么吗？在用TalkBack测试我的应用程序时，我看到了同样的情况。当我点击后退按钮退出我的一项活动时，TalkBack会发出同样的错误。我的活动也有一个启用了javascript的webview。我的活动未积极使用TTS服务。我只是在测试它与TalkBack的配合效果。我在谷歌集团上发现了一条讨论同一问题的帖子，但显然它自己神奇地解决了这个问题。我没有。它似乎不会影响应用程序本身，我也找不到任何迹象表明它会导致其他应用程序或服务出现任何问题，从而影响手机的正常功能。我刚刚开始悬赏，也许会这样解决。当Android 4.4的Talkback开启时，我得到AccessibilityInputor的logcat错误。你能为这个问题提出一些解决方法吗：webview=（webview）findviewbyd（R.id.webview\u wv）；我通过查找获得了webview，那么如何避免此异常呢？@thecr0w我发现使用Application
context是避免此异常的唯一方法。明显的副作用是不能用xml定义WebView
。您必须在运行时创建它并将其添加到布局中。您可以尝试一件事：在xml中定义WebView
，并使用通过LayoutInflater.fromContext（getApplicationContext（））
获得的LayoutInflater对布局进行膨胀。我不能说它是否有效。
class YourActivity extends Activity {
WebView yourWebView;

    @Override
    public void onDestroy() {

        if (yourWebView != null) {
            yourWebView.getSettings().setJavaScriptEnabled(false);
        }
}

private void removeTtsApis() {
    if (mTextToSpeech != null) {
        mTextToSpeech.stop();
        mTextToSpeech.shutdown();
        mTextToSpeech = null;
    }

    mWebView.removeJavascriptInterface(ALIAS_TTS_JS_INTERFACE);
}