初学android studio，关于logcat日记任务错误处理问题。

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今天看了郭大神的 《第一行代码2》的第一章的日记内容，运行刚创建的系统helloworld程序（修改名称而已），发现了logcat很多的error，缺不知道错误代码在那里，怎么解决？（运行结果什么的都问题，）大佬勿喷！ 百度没解决。
部分错误如下：
12-01 11:33:59.271 2333-6223/com.google.android.gms E/ActivityThread: Failed to find provider info for com.google.android.wearable.settings
12-01 11:36:59.220 1607-1624/system_process E/BluetoothAdapter: Bluetooth binder is null
12-01 11:36:59.221 1607-1624/system_process E/BatteryStatsService: no controller energy info supplied
12-01 11:36:59.234 1607-1624/system_process E/KernelCpuSpeedReader: Failed to read cpu-freq: /sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state (No such file or directory)
12-01 11:36:59.235 1607-1624/system_process E/KernelUidCpuTimeReader: Failed to read uid_cputime: /proc/uid_cputime/show_uid_stat (No such file or directory)
12-01 11:36:59.235 1607-1624/system_process E/KernelWakelockReader: neither /proc/wakelocks nor /d/wakeup_sources exists
12-01 11:36:59.236 1607-1624/system_process E/BatteryStatsService: modem info is invalid: ModemActivityInfo{ mTimestamp=0 mSleepTimeMs=0 mIdleTimeMs=0 mTxTimeMs[]=[0, 0, 0, 0, 0] mRxTimeMs=0 mEnergyUsed=0}

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