Android：ANR输入调度超时-仅限华为设备

Question

ANR堆栈：

Input dispatching timed out (Waiting to send key event because the focused window has not finished processing all of the input events that were previously delivered to it. Outbound queue length: 0. Wait queue length: 2.)

    "main" tid=1 Native 
    "main" prio=5 tid=1 Native
      | group="main" sCount=1 dsCount=0 flags=1 obj=0x73056ad0 self=0x78122a3a00
      | sysTid=20046 nice=-10 cgrp=default sched=0/0 handle=0x78171f79b0
      | state=S schedstat=( 7479347944 793149495 9121 ) utm=657 stm=90 core=2 HZ=100
      | stack=0x7fff6b9000-0x7fff6bb000 stackSize=8MB
      | held mutexes=
      #00  pc 0000000000069800  /system/lib64/libc.so (__epoll_pwait+8)
      #01  pc 000000000001f6c0  /system/lib64/libc.so (epoll_pwait+48)
      #02  pc 0000000000015c80  /system/lib64/libutils.so (_ZN7android6Looper9pollInnerEi+144)
      #03  pc 0000000000015b68  /system/lib64/libutils.so (_ZN7android6Looper8pollOnceEiPiS1_PPv+108)
      #04  pc 000000000011a5dc  /system/lib64/libandroid_runtime.so (???)
      #05  pc 00000000002014ac  /system/framework/arm64/boot-framework.oat (Java_android_os_MessageQueue_nativePollOnce__JI+140)
      at android.os.MessageQueue.nativePollOnce (MessageQueue.java)
      at android.os.MessageQueue.next (MessageQueue.java:379)
      at android.os.Looper.loop (Looper.java:144)
      at android.app.ActivityThread.main (ActivityThread.java:7523)
      at java.lang.reflect.Method.invoke (Method.java)
      at com.android.internal.os.Zygote$MethodAndArgsCaller.run (Zygote.java:245)
      at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:921)

Java代码：dEmptyOperation类扩展自AsyncTask。refreshList方法包括一个volley post请求

    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
// .. if statement codes
                    new dEmptyOperation() {
                        @Override
                        protected String doInBackground(String... params) {
                            if (main.refreshActivity != null) {
                                try {
                                    main.refreshActivity.refreshList();
                                    main.refresh = false;
                                }catch (Exception ignored){

                                }
                            }
                            return null;
                        }
                    }.execute("");
//..
    }

Answer 1

如果没有看到你的代码，我就无法准确地说出正在发生的事情。但是，我认为您在当前活动中调用了一个方法，该方法正在主线程中进行大量工作，这就是在使用ANR时的大多数情况下的原因。

您可以使用AsyncTask轻松地避免这种情况。每次处理某些数据时创建AsyncTask，并在数据处理完毕时处理活动中的回调。

下面是关于如何创建asynctask并处理活动中的回调的一个很好的答案。