Failed to unmount /storage/udisk (Device or resource busy, retries 6, action 0)

具体报错信息：

09-19 10:36:48.163 181-212/? W/Vold: Failed to unmount /storage/udisk (Device or resource busy, retries 6, action 0)
09-19 10:36:48.536 181-212/? E/ProcessKiller: Process com.example.petrochina_oil (27188) has open file /mnt/media_rw/udisk/ad_res/myupdates/petrochina_oil-v1.1.5-20190918_161401.apk

原因是因为文件占用：

/*** 获取apk包的信息：版本号，名称，图标等** @param //absPath  apk包的绝对路径* @param //context */public static ApplicationInfo apkInfo(String absPath, Context context) {ApplicationInfo appInfo = null;String version = "";PackageManager pm = context.getPackageManager();PackageInfo pkgInfo = pm.getPackageArchiveInfo(absPath, PackageManager.GET_ACTIVITIES);if (pkgInfo != null) {appInfo = pkgInfo.applicationInfo;/* 必须加这两句，不然下面icon获取是default icon而不是应用包的icon */appInfo.sourceDir = absPath;appInfo.publicSourceDir = absPath;String appName = pm.getApplicationLabel(appInfo).toString();// 得到应用名 String packageName = appInfo.packageName; // 得到包名version = pkgInfo.versionName; // 得到版本信息/* icon1和icon2其实是一样的 *///获取u盘里面的文件图标会导致文件占用Drawable icon1 = pm.getApplicationIcon(appInfo);// 得到图标信息Drawable icon2 = appInfo.loadIcon(pm);String pkgInfoStr = String.format("PackageName:%s, Vesion: %s, AppName: %s", packageName, version, appName);Log.i(MainActivity.TAG, String.format("PkgInfo: %s", pkgInfoStr));}return appInfo;}

将以下这两行注释掉就可以了：

Drawable icon1 = pm.getApplicationIcon(appInfo);// 得到图标信息
Drawable icon2 = appInfo.loadIcon(pm);

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Failed to unmount /storage/udisk (Device or resource busy, retries 6, action 0)

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