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how to give write permission to system/app folder
i have rooted my android device
i want to download the app and install in system/app folder
Process p = Runtime.getRuntime().exec( "su" );
i had tried this command it ask for user permission and then it throws exception
system/app is read only file system
472
Android apps must request permission to access sensitive user data (such as contacts and SMS), as well as certain system features (such as camera and internet). Depending on the feature, the system might grant the permission automatically or might prompt the user to approve the request.
If the above code return false which means your app does not has the write settings permission, then you need to start activity Settings.ACTION_MANAGE_WRITE_SETTINGS to let users change the permission manually. After the permission has been changed, you can type the back menu to go to your android application to continue.
It can be tricky to grant advanced permissions to Android apps without rooting your phone. Here's how you can use ADB to achieve it. Most Android apps can easily ask for basic permissions like storage or camera access. However, some apps require system-level permissions to function properly.
Steps for Requesting permissions at run time Step 1: Declare the permission in the Android Manifest file: In Android, permissions are declared in the AndroidManifest. Step 2: Modify activity_main.xml file to Add two buttons to request permission on button click: Permission will be... Step 3: Check ...
First go to shell using
adb shell
Then remount the system folder as writable using following commands
$ su
# mount -o remount,rw -t yaffs2 /dev/block/mtdblock3 /system
Then change the permission of system folder to Read, Write and Execute using
# chmod 777 /system/app
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