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Android应用程序中乱搞DBFlow试图学习框架,我开始得到错误,虽然我不确定它们与DBFlow有关.

这是错误消息：

01-12 06:49:43.817 1294-1310/? E/BluetoothAdapter: Bluetooth binder is null

01-12 06:49:43.818 1294-1310/? E/KernelCpuSpeedReader: Failed to read cpu-freq

java.io.FileNotFoundException: /sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state: open failed: ENOENT (No such file or directory)

at libcore.io.IoBridge.open(IoBridge.java:452)

at java.io.FileInputStream.(FileInputStream.java:76)

at java.io.FileInputStream.(FileInputStream.java:103)

at java.io.FileReader.(FileReader.java:66)

at com.android.internal.os.KernelCpuSpeedReader.readDelta(KernelCpuSpeedReader.java:49)

at com.android.internal.os.BatteryStatsImpl.updateCpuTimeLocked(BatteryStatsImpl.java:8002)

at com.android.server.am.BatteryStatsService.updateExternalStats(BatteryStatsService.java:1366)

at com.android.server.am.BatteryStatsService$BatteryStatsHandler.handleMessage(BatteryStatsService.java:125)

at android.os.Handler.dispatchMessage(Handler.java:102)

at android.os.Looper.loop(Looper.java:148)

at android.os.HandlerThread.run(HandlerThread.java:61)

at com.android.server.ServiceThread.run(ServiceThread.java:46)

Caused by: android.system.ErrnoException: open failed: ENOENT (No such file or directory)

at libcore.io.Posix.open(Native Method)

at libcore.io.BlockGuardOs.open(BlockGuardOs.java:186)

at libcore.io.IoBridge.open(IoBridge.java:438)

at java.io.FileInputStream.(FileInputStream.java:76)

at java.io.FileInputStream.(FileInputStream.java:103)

at java.io.FileReader.(FileReader.java:66)

at com.android.internal.os.KernelCpuSpeedReader.readDelta(KernelCpuSpeedReader.java:49)

at com.android.internal.os.BatteryStatsImpl.updateCpuTimeLocked(BatteryStatsImpl.java:8002)

at com.android.server.am.BatteryStatsService.updateExternalStats(BatteryStatsService.java:1366)

at com.android.server.am.BatteryStatsService$BatteryStatsHandler.handleMessage(BatteryStatsService.java:125)

at android.os.Handler.dispatchMessage(Handler.java:102)

at android.os.Looper.loop(Looper.java:148)

at android.os.HandlerThread.run(HandlerThread.java:61)

at com.android.server.ServiceThread.run(ServiceThread.java:46)

01-12 06:49:43.818 1294-1310/? E/KernelUidCpuTimeReader: Failed to read uid_cputime

java.io.FileNotFoundException: /proc/uid_cputime/show_uid_stat: open failed: ENOENT (No such file or directory)

at libcore.io.IoBridge.open(IoBridge.java:452)

at java.io.FileInputStream.(FileInputStream.java:76)

at java.io.FileInputStream.(FileInputStream.java:103)

at java.io.FileReader.(FileReader.java:66)

at com.android.internal.os.KernelUidCpuTimeReader.readDelta(KernelUidCpuTimeReader.java:71)

at com.android.internal.os.BatteryStatsImpl.updateCpuTimeLocked(BatteryStatsImpl.java:8031)

at com.android.server.am.BatteryStatsService.updateExternalStats(BatteryStatsService.java:1366)

at com.android.server.am.BatteryStatsService$BatteryStatsHandler.handleMessage(BatteryStatsService.java:125)

at android.os.Handler.dispatchMessage(Handler.java:102)

at android.os.Looper.loop(Looper.java:148)

at android.os.HandlerThread.run(HandlerThread.java:61)

at com.android.server.ServiceThread.run(ServiceThread.java:46)

Caused by: android.system.ErrnoException: open failed: ENOENT (No such file or directory)

at libcore.io.Posix.open(Native Method)

at libcore.io.BlockGuardOs.open(BlockGuardOs.java:186)

at libcore.io.IoBridge.open(IoBridge.java:438)

at java.io.FileInputStream.(FileInputStream.java:76)

at java.io.FileInputStream.(FileInputStream.java:103)

at java.io.FileReader.(FileReader.java:66)

at com.android.internal.os.KernelUidCpuTimeReader.readDelta(KernelUidCpuTimeReader.java:71)

at com.android.internal.os.BatteryStatsImpl.updateCpuTimeLocked(BatteryStatsImpl.java:8031)

at com.android.server.am.BatteryStatsService.updateExternalStats(BatteryStatsService.java:1366)

at com.android.server.am.BatteryStatsService$BatteryStatsHandler.handleMessage(BatteryStatsService.java:125)

at android.os.Handler.dispatchMessage(Handler.java:102)

at android.os.Looper.loop(Looper.java:148)

at android.os.HandlerThread.run(HandlerThread.java:61)

at com.android.server.ServiceThread.run(ServiceThread.java:46)

我对Android开发很陌生,并且混淆了它们发生的原因.它不会崩溃我的应用程序,并且似乎不是每次都发生.

顺便说一下,我正在使用Nexus 5 Emulator来运行它,所以它可能与此相关吗？通常错误很糟糕,所以我认为这是一件值得关注的事情,不管它是否会影响应用……？