[RK3288][Android6.0] 调试笔记 --- DropBoxManager引起sdcard挂载失败
Platform: ROCKCHIP
OS: Android 6.0
Kernel: 3.10.92
现象:
系统开机偶发遇到sdcard无法挂载情况。
异常Log:
01-29 09:47:59.356 180 689 I vold : Trimmed 125755392 bytes on /cache in 12ms
01-29 09:47:59.356 180 689 D vold : Starting trim of /metadata
01-29 09:47:59.357 579 687 D VoldConnector: RCV <- {662 /cache 125755392 12153750}
01-29 09:47:59.358 579 597 E VoldConnector: Error handling '662 /cache 125755392 12153750': java.lang.NullPointerException: Attempt to invoke virtual method 'void android.os.DropBoxManager.addText(java.lang.String, java.lang.String)' on a null object reference
01-29 09:47:59.361 180 689 I vold : Trimmed 12263424 bytes on /metadata in 4ms
01-29 09:47:59.361 180 689 D vold : Starting trim of /data
01-29 09:47:59.361 579 687 D VoldConnector: RCV <- {662 /metadata 12263424 4128250}
01-29 09:47:59.361 579 597 E VoldConnector: Error handling '662 /metadata 12263424 4128250': java.lang.NullPointerException: Attempt to invoke virtual method 'void android.os.DropBoxManager.addText(java.lang.String, java.lang.String)' on a null object reference
原因：
经查证，此问题是Google原生的一个Bug，Android8.x版本也存在。
Prevent NPE with DropBoxManager
“java.lang.NullPointerException: Attempt to invoke virtual
method ‘void android.os.DropBoxManager.addText(java.lang.String,
java.lang.String)’ on a null object reference”
解决方法：
