Android 3.X中WebView使用ZOOM崩溃的问题

  • A+
所属分类:Linux编程
摘要

WebView中包含一个ZoomButtonsController,当使用web.getSettings().setBuiltInZoomControls(true);启用后,用户一旦触摸屏幕,就

09-29 21:44:08.557: ERROR/ActivityThread(31036): Activity XXX has leaked IntentReceiver 

Android.widget.ZoomButtonsController$1@419abcf0 that was originally registered here. Are you missing a call to unregisterReceiver()?

09-29 21:44:08.557: ERROR/ActivityThread(31036): android.app.IntentReceiverLeaked: XXX has leaked IntentReceiver 

android.widget.ZoomButtonsController$1@419abcf0 that was originally registered here. Are you missing a call to unregisterReceiver()?

09-29 21:44:08.917: ERROR/AndroidRuntime(31036): java.lang.IllegalArgumentException: Receiver not registered: 

android.widget.ZoomButtonsController$1@419abcf0

09-29 21:44:08.917: ERROR/AndroidRuntime(31036):     at android.app.LoadedApk.forgetReceiverDispatcher

(LoadedApk.java:650)

09-29 21:44:08.917: ERROR/AndroidRuntime(31036):     at android.app.ContextImpl.unregisterReceiver

(ContextImpl.java:1091)

09-29 21:44:08.917: ERROR/AndroidRuntime(31036):     at android.content.ContextWrapper.unregisterReceiver

(ContextWrapper.java:354)

09-29 21:44:08.917: ERROR/AndroidRuntime(31036):     at android.widget.ZoomButtonsController.setVisible

(ZoomButtonsController.java:405)

09-29 21:44:08.917: ERROR/AndroidRuntime(31036):     at android.widget.ZoomButtonsController$2.handleMessage

(ZoomButtonsController.java:179)

09-29 21:44:08.917: ERROR/AndroidRuntime(31036):     at android.os.Handler.dispatchMessage(Handler.java:99)

09-29 21:44:08.917: ERROR/AndroidRuntime(31036):     at android.os.Looper.loop(Looper.java:152)

09-29 21:44:08.917: ERROR/AndroidRuntime(31036):     at android.app.ActivityThread.main(ActivityThread.java:4559)

09-29 21:44:08.917: ERROR/AndroidRuntime(31036):     at java.lang.reflect.Method.invokeNative(Native Method)

09-29 21:44:08.917: ERROR/AndroidRuntime(31036):     at java.lang.reflect.Method.invoke(Method.java:491)

09-29 21:44:08.917: ERROR/AndroidRuntime(31036):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run

(ZygoteInit.java:841)

09-29 21:44:08.917: ERROR/AndroidRuntime(31036):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)

09-29 21:44:08.917: ERROR/AndroidRuntime(31036):     at dalvik.system.NativeStart.main(Native Method)

WebView中包含一个ZoomButtonsController,当使用web.getSettings().setBuiltInZoomControls(true);启用后,用户一旦触摸屏幕,就会出现缩放控制图标。这个图标过上几秒会自动消失,但在3.X系统上,如果图标自动消失前退出当前Activity的话,就会报上面的这些异常。

根据异常信息再参考一下WebView的源码就可以知道ZoomButtonsController有一个register和unregister的过程。但是这两个过程是我们控制不了的,WebView有显示控制的API但我们访问不过。我们能访问到的只有这几个和ZoomButtonsController的控制相关:

void setBuiltInZoomControls(boolean enabled)

void setDefaultZoom(WebSettings.ZoomDensity zoom)

void setDisplayZoomControls(boolean enabled)

void setSupportZoom(boolean support)

试过了一遍都不管用。

最后看终极解析方案吧

在Activity的onDestroy里面加上这么一句:web.setVisibility(View.GONE);把WebView设置为GONE就可以了。

另外,这个问题在2.X上面不存在。

除非注明,否则均为@蒲公英网原创文章,转载必须以链接形式标明本文链接

本文链接:https://www.aipgy.com/55233.html

avatar

发表评论

:?: :razz: :sad: :evil: :!: :smile: :oops: :grin: :eek: :shock: :???: :cool: :lol: :mad: :twisted: :roll: :wink: :idea: :arrow: :neutral: :cry: :mrgreen: