源码分析ANR超时

贺祥 | 发表于 | 分类于

ANR超时

Activity 超时 5秒
ActivityManagerService.java

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// How long we wait until we timeout on key dispatching.
    static final int KEY_DISPATCHING_TIMEOUT = 5*1000;

前台service 超时默认20秒 后台service 超时200秒
android framework 源码中 ActiveServices.java

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// How long we wait for a service to finish executing.
static final int SERVICE_TIMEOUT = 20*1000;

// How long we wait for a service to finish executing.
static final int SERVICE_BACKGROUND_TIMEOUT = SERVICE_TIMEOUT * 10;
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void serviceTimeout(ProcessRecord proc) {
       //...
       //proc.execServicesFg 是否前台执行任务

            final long maxTime =  now -
                    (proc.execServicesFg ? SERVICE_TIMEOUT : SERVICE_BACKGROUND_TIMEOUT);
          //...
    }

广播,前台 10秒 后台60秒
ActivityManagerService.java

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// How long we allow a receiver to run before giving up on it.
   static final int BROADCAST_FG_TIMEOUT = 10*1000;
   static final int BROADCAST_BG_TIMEOUT = 60*1000;