how to run apk file in android
<p>I try to run apk file in android, i follo these steps</p>

<ol>
<li>First get the Android SDK and unzip it somewhere on your hard drive</li>
<li>Add SDK_ROOT to your system variables pointing to /tools folder under the sdk</li>
<li>Run the emulator</li>
<li>Copy the apk file to /tools folder</li>
<li>Change directory to /tools and run from commandline $adb install your_application.apk</li>
<li>Now check applications list in the emulator and you should see the new application installed and ready.</li>
</ol>

<p>but i will this type of error :</p>

<pre><code>'adb' is not recognized as an internal or external command,
operable program or batch file.
</code></pre>
