i saw that there's no instruction about installing a texture pack on MC:PE on Android. I try to explain it, but my English isnt't very good, so sorry.
- You don't need root access.
- It's a bit harder than on iOS devices
Step 1: Download and install the Astro File Manager
Step 2: Launch the File Manager and select "Application management"
Step 3: Check the box with the title "Minecraft Pocket Edition"
Step 4: Select Backup
Step 5: Now go back to main menu and select "File management"
Step 6: Go to /mnt/sdcard/backups/apps
Step 7: Copy the terrain.png into the folder of Minecraft PE and replace the terrain.png in assets.
So, you should have now a .zip file with a modified terrain.png
Step 8: Now you can close the Astro File Manager and download and install ZipSigner2
Step 9: Start the app and touch on "Input"
Step 10: Now select the .zip file of MC:PE in your /mnt/sdcard/backups/apps folder
Step 11: Now you just touch on "Sign the file" and wait, until the process is finished
Step 12: Remove MC:PE from your device and install the modified .apk file, which you can find in /mnt/sdcard or in the folder /mnt/sdcard/backups/apps
Now you have a modified MC:PE with your own Texture Pack.