title: Launch my app once NFC tag is detected, then display result
body: <p>I've made an application who can read a NFC tag and display his content (once he has been parsed) following this tutorial : <a href="https://medium.com/@ssaurel/create-a-nfc-reader-application-for-android-74cf24f38a6f" rel="nofollow noreferrer">https://medium.com/@ssaurel/create-a-nfc-reader-application-for-android-74cf24f38a6f</a> except that I had a button who needs to be pushed if you want to scan a NFC tag.</p>
  
  <p>Now, in my AndroidManifest.xml I added an intent filter to allow my app to start if a NFG tag is detected from my device :</p>
  
  <pre><code>    &lt;activity android:name=".MainActivity" android:screenOrientation="portrait" &gt;
          &lt;intent-filter&gt;
              &lt;action android:name="android.intent.action.MAIN" /&gt;
  
              &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
          &lt;/intent-filter&gt;
          &lt;intent-filter&gt;
              &lt;action android:name="android.nfc.action.NDEF_DISCOVERED" /&gt;
              &lt;category android:name="android.intent.category.DEFAULT" /&gt;
              &lt;data android:scheme="http" /&gt;
              &lt;data android:scheme="https" /&gt;
          &lt;/intent-filter&gt;
          &lt;intent-filter&gt;
              &lt;action android:name="android.nfc.action.NDEF_DISCOVERED" /&gt;
              &lt;category android:name="android.intent.category.DEFAULT" /&gt;
              &lt;data android:mimeType="application/vnd.com.example" /&gt;
          &lt;/intent-filter&gt;
          &lt;meta-data android:name="android.nfc.action.TECH_DISCOVERED"
              android:resource="@xml/nfc_tech_filter" /&gt;
      &lt;/activity&gt;
  </code></pre>
  
  <p>It launchs my app but nothing happens. I means, i have no result about the NFC tag... 
  How to get tag's content while my app is opening ?</p>