The android app determines if the dev block has a file

Hello, it's a pleasure to help you, ! /bin/shmount -o remount,rw -t yaffs2 /dev/block/mtdblock1 /system

cat /data/mydata/ > /system/app/chmod 755 /system/aapp/mount -o remount,ro -t yaffs2 /dev/block/mtdblock1 /system

reboot

Generally, the system mtd partition on the mobile phone is dev block mtdblock1 and needs to be restarted, if it is not restarted, there are two phenomena.

1.The file does not show up in the app.

List. 2.The file is installed in the data area instead of the system area.

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Android app.

The way to determine if the dev block has a file is as follows:

1. Generally, the MTD partition of the system on the mobile phone is dev block mtdblock1 and needs to be restarted, if it is not restarted, there are two phenomena.

2. The file does not appear in the application list.

3. The file is installed in the data area instead of the system area.

Please don't use Storage SDCARD0 directly for the SD card directory, you try it this way.

string sdpath = "//";

file f = new file(sdpath +"/manual/")

Also, did you forget to add permissions?

Is the path written correctly, mnt sdcard plus try.

Install a RE manager: root explorer, the electronic market has, or the frustration up and down, synchronous installation on it.

It is possible that the path is incorrect, and therefore cannot be accessed.

Your path is wrong, there is an extra space in it, double-check.

com. There's a space here.

At present, there are two mainstream ways to judge Android, the first is to judge according to the name of the package (packagename). The other is to judge according to the intent, which is as follows:

The above ** is only based on the Android system, and is invalid for the iOS system.

Because the name of my apk is not the same as the name of the app after installation, so this method can't tell if the apk has been installed, what I want to know now is how does android judge itself? Go to eoeandroid** to see the answer details".

Go to system data and check if there is this apk