title: Android - Error signing my apk wit jarsigner
body: <p>I made a key file like this:</p>
  
  <pre><code>C:\Users\Alex&gt;keytool -genkey -v -keystore alexkey.keystore -alias alexkey -keyalg RSA -keysize 2048 -validity 10000
  </code></pre>
  
  <p>and then I tried to sign my .apk file with it like this:</p>
  
  <pre><code>C:\&gt;jarsigner -verbose -keystore alexkey.keystore problemio.apk alexkey
  </code></pre>
  
  <p>and I saved the .apk file by right-clicking the project name in Eclipse --> Android tools --> Export unsigned application package.</p>
  
  <p>and then I put the .apk file in the same dir as the key, and ran the jarsigner command from that same dir.</p>
  
  <p>Any idea why I got this error:</p>
  
  <pre><code>jarsigner: unable to create: problemio.apk.sig
  </code></pre>
  
  <p>Thanks!</p>