anr超时时间定义

定义位置：ActivityManagerService.java中定义

• Broadcast ANR时间为10s：
  // How long we allow a receiver to run before giving up on it.
  static fianl int BROADCAST_TIMEOUT=10*1000；

• 按键无响应ANR时间为5s；
  //how long we wait until we timeout on key dispatching.
  static final int KEY_DISPATCHING_TIMEOUT=5*1000；