我正在开发一个 Android 应用程序,我想在我的代码运行时有一些方法来打印调试语句。对我来说幸运的是,当我在 Android 2.3.3 (API 10) 模拟器上运行我的应用程序时,Logcat 能够打印出 Log.d 消息。
但是,当我在物理设备(Samsung Galaxy S4 Android 4.2.2)上测试相同的应用程序时,除了 dalvikvm 和 AndroidRuntime 消息之外,我什么也看不到。
com.android.internal.os.RuntimeInit <<<<<<
07-28 04:49:24.165: DEBUG/AndroidRuntime(6378): CheckJNI is OFF
07-28 04:49:24.165: DEBUG/AndroidRuntime(6378): setted country_code = USA
07-28 04:49:24.165: DEBUG/AndroidRuntime(6378): setted countryiso_code = US
07-28 04:49:24.175: DEBUG/AndroidRuntime(6378): setted sales_code = VZW
07-28 04:49:24.175: DEBUG/AndroidRuntime(6378): readGMSProperty: start
07-28 04:49:24.175: DEBUG/AndroidRuntime(6378): readGMSProperty: already setted!!
07-28 04:49:24.175: DEBUG/AndroidRuntime(6378): readGMSProperty: end
07-28 04:49:24.175: DEBUG/AndroidRuntime(6378): addProductProperty: start
07-28 04:49:24.185: DEBUG/dalvikvm(6378): Trying to load lib libjavacore.so 0x0
07-28 04:49:24.185: DEBUG/dalvikvm(6378): Added shared lib libjavacore.so 0x0
07-28 04:49:24.195: DEBUG/dalvikvm(6378): Trying to load lib libnativehelper.so 0x0
07-28 04:49:24.195: DEBUG/dalvikvm(6378): Added shared lib libnativehelper.so 0x0
07-28 04:49:24.385: DEBUG/AndroidRuntime(6378): Calling main entry com.android.commands.pm.Pm
07-28 04:49:26.978: DEBUG/AndroidRuntime(6378): Shutting down VM
07-28 04:49:26.988: DEBUG/dalvikvm(6378): GC_CONCURRENT freed 157K, 21% free 627K/788K, paused 1ms+0ms, total 4ms
07-28 04:49:26.988: DEBUG/jdwp(6378): Got wake-up signal, bailing out of select
07-28 04:49:26.988: DEBUG/dalvikvm(6378): Debugger has detached; object registry had 1 entries
07-28 04:49:27.458: DEBUG/AndroidRuntime(6420): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<
07-28 04:49:27.458: DEBUG/AndroidRuntime(6420): CheckJNI is OFF
07-28 04:49:27.458: DEBUG/AndroidRuntime(6420): setted country_code = USA
07-28 04:49:27.458: DEBUG/AndroidRuntime(6420): setted countryiso_code = US
07-28 04:49:27.458: DEBUG/AndroidRuntime(6420): setted sales_code = VZW
07-28 04:49:27.458: DEBUG/AndroidRuntime(6420): readGMSProperty: start
07-28 04:49:27.458: DEBUG/AndroidRuntime(6420): readGMSProperty: already setted!!
07-28 04:49:27.458: DEBUG/AndroidRuntime(6420): readGMSProperty: end
07-28 04:49:27.458: DEBUG/AndroidRuntime(6420): addProductProperty: start
07-28 04:49:27.468: DEBUG/dalvikvm(6420): Trying to load lib libjavacore.so 0x0
07-28 04:49:27.478: DEBUG/dalvikvm(6420): Added shared lib libjavacore.so 0x0
07-28 04:49:27.478: DEBUG/dalvikvm(6420): Trying to load lib libnativehelper.so 0x0
07-28 04:49:27.478: DEBUG/dalvikvm(6420): Added shared lib libnativehelper.so 0x0
07-28 04:49:27.649: DEBUG/AndroidRuntime(6420): Calling main entry com.android.commands.am.Am
07-28 04:49:27.659: DEBUG/dalvikvm(6420): Note: class Landroid/app/ActivityManagerNative; has 169 unimplemented (abstract) methods
07-28 04:49:27.719: DEBUG/AndroidRuntime(6420): Shutting down VM
07-28 04:49:27.729: DEBUG/dalvikvm(6420): GC_CONCURRENT freed 157K, 20% free 666K/828K, paused 0ms+1ms, total 3ms
07-28 04:49:27.729: DEBUG/jdwp(6420): Got wake-up signal, bailing out of select
07-28 04:49:27.729: DEBUG/dalvikvm(6420): Debugger has detached; object registry had 1 entries
我不确定发生了什么,因为 Logcat 正确地针对我的物理设备,它显示在 adb 设备上,并且 USB 调试已打开。
我试过使用 Log.e 但这对输出没有影响。
我什至在 AndroidManifest.xml 中设置了 android:debuggable="true"。
我在这里缺少什么吗?为什么在我的物理设备上运行我的应用程序时,Logcat 不会显示我的调试消息?
编辑:我在 Android 4.2.2 模拟器上尝试了相同的应用程序,Logcat 在模拟器上按预期工作,但通过 USB 设备使用 Logcat 仍然存在问题。我发布的块不是普通 Logcat 打印输出的冗长,而是我在 Verbose 日志级别上看到的唯一内容。