Android Pie(9.0)WebView在多进程中
作者:互联网
启动Android Pie(API 28),Google不允许在2个不同的进程中使用单个WebView实例.
根据需要,我调用了WebView.setDataDirectorySuffix(“dir_name_no_separator”)但不幸的是,我得到了一个例外.
我试图在第二个进程Service onCreate()中调用此方法.
java.lang.RuntimeException: Unable to create service com.myapp.service.MyService: java.lang.IllegalStateException: Can't set data directory suffix: WebView already initialized
at android.app.ActivityThread.handleCreateService(ActivityThread.java:3544)
at android.app.ActivityThread.access$1300(ActivityThread.java:199)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1666)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
Caused by: java.lang.IllegalStateException: Can't set data directory suffix: WebView already initialized
at android.webkit.WebViewFactory.setDataDirectorySuffix(WebViewFactory.java:136)
at android.webkit.WebView.setDataDirectorySuffix(WebView.java:2165)
at com.myapp.service.MyService.onCreate(MyService.java:134)
我找不到任何理由这个例外.我没有两次调用这个方法,也没有在主进程中调用它.有任何想法吗?
解决方法:
解决了.
我的项目托管了AdMob广告,我在Application类onCreate()中调用了MobileAds.initialize()方法.广告初始值设定项会加载一个WebView,在调用WebView.setDataDirectorySuffix(“dir_name_no_separator”)方法之前,该WebView现在禁止在新进程中执行.
当创建第二个进程时,它也会通过相同的应用程序创建流,这意味着它在Application类中调用相同的onCreate(),它调用尝试创建新WebView实例的MobileAds.initialize()并由此引起碰撞.
IllegalStateException: Can't set data directory suffix: WebView already initialized
我怎么解决这个问题?
我使用下面的方法获取进程名称,并检查它是否是我的主进程 – 调用MobileAds.initialize()方法,如果这是我的第二个进程,请调用
WebView.setDataDirectorySuffix(“dir_name_no_separator”)方法.
获取进程名称:
public static String getProcessName(Context context) {
ActivityManager manager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
for (ActivityManager.RunningAppProcessInfo processInfo : manager.getRunningAppProcesses()) {
if (processInfo.pid == android.os.Process.myPid()) {
return processInfo.processName;
}
}
return null;
}
应用程序类onCreate():
if (!Utils.getProcessName(this).equals("YOUR_SECOND_PROCESS_NAME")) {
MobileAds.initialize(this);
} else {
WebView.setDataDirectorySuffix("dir_name_no_separator")
}
标签:android-9-0-pie,android,android-service,multiprocessing 来源: https://codeday.me/bug/20191005/1855383.html