`classes.dex` method count helpers. Requires smali/baksmali from https://code.google.com/p/smali/ and dexdump from the build-tools in the Android SDK be on your PATH.

dex.sh

function dex-method-count() {
  cat $1 | head -c 92 | tail -c 4 | hexdump -e '1/4 "%d\n"'
}
function dex-method-count-by-package() {
  dir=$(mktemp -d -t dex)
  baksmali $1 -o $dir
  for pkg in `find $dir/* -type d`; do
    smali $pkg -o $pkg/classes.dex
    count=$(dex-method-count $pkg/classes.dex)
    name=$(echo ${pkg:(${#dir} + 1)} | tr '/' '.')
    echo -e "$count\t$name"
  done
  rm -rf $dir
}

dex-method-count seems to return incorrect number of methods for me. I used the following script to count the number of methods in my jar file:

dex_dir=$(mktemp -d -t dex)
dex_file="$dex_dir/dexed.jar"
dx --dex --output $dex_file $1
baksmali $dex_file -o $dex_dir
count=$(find $dex_dir -type f -exec grep "\.method" '{}' \; | wc -l | tr -d ' ')
echo "There are $count methods in $1"