获取指定路径下未安装的apk包信息

private String getUninstallAPKInfo(Context ctx,String archiveFilePath) {
//eg:archiveFilePath=Environment.getExternalStorageDirectory()+"/"+"TestB.apk"
String versionName = null;
String appName = null;
String pakName = null;
PackageManager pm=ctx.getPackageManager();
PackageInfo pakinfo=pm.getPackageArchiveInfo(archiveFilePath,PackageManager.GET_ACTIVITIES);
if (pakinfo!=null) {
ApplicationInfo appinfo=pakinfo.applicationInfo;
versionName=pakinfo.versionName;
Drawable icon=pm.getApplicationIcon(appinfo);
appName=(String) pm.getApplicationLabel(appinfo);
pakName=appinfo.packageName;
}
return versionName;
}