Can't open APK file on smartphone
<p>I've made an application in eclipse using android project. Now I installed that APK-file on my smartphone.</p>

<p>When I hit install, it just installs, it's  fine. But then I get the option <strong>"Cancel"</strong>, or <strong>"open"</strong>. But I can't click on "Open". </p>

<p>Just nothing happens every time I try to open it. It's not with my other apps.</p>

<p>I can find it at "downloads", but I just can't open it. I can update and install it again countless times. Unknown sources in my settings is on. </p>

<p>Does anyone know this issue, and/or how to fix it? </p>

<p>Help would be appreciated.</p>

<p>Manifest code:</p>

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.rodekruis"
    android:versionCode="1"
    android:versionName="1.0" &gt;

    &lt;uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="21" /&gt;

    &lt;application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" &gt;
        &lt;activity
            android:name=".MainActivity"
            android:label="@string/app_name" &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;/activity&gt;
        &lt;activity
            android:name=".BezoekActivity"
            android:label="@string/app_name" &gt;
            &lt;intent-filter&gt;
                &lt;action android:name="com.example.rodekruis.BezoekActivity" /&gt;

                &lt;category android:name="android.intent.category.DEFAULT" /&gt;
            &lt;/intent-filter&gt;
        &lt;/activity&gt;
        &lt;activity
            android:name=".AfspraakActivity"
            android:label="@string/title_activity_afspraak" &gt;
        &lt;/activity&gt;
        &lt;activity
            android:name=".ContactActivity"
            android:label="@string/title_activity_contact" &gt;
        &lt;/activity&gt;
        &lt;activity
            android:name=".MeningActivity"
            android:label="@string/title_activity_mening" &gt;
        &lt;/activity&gt;
        &lt;activity
            android:name=".RouteActivity"
            android:label="@string/title_activity_route" &gt;
        &lt;/activity&gt;
        &lt;activity
            android:name=".SpecialistenActivity"
            android:label="@string/title_activity_specialisten" &gt;
        &lt;/activity&gt;
        &lt;activity
            android:name=".BWCActivity"
            android:label="@string/title_activity_bwc" &gt;
        &lt;/activity&gt;
        &lt;activity
            android:name=".AgendaActivity"
            android:label="@string/title_activity_agenda" &gt;
        &lt;/activity&gt;
        &lt;activity
            android:name=".InfoActivity"
            android:label="@string/title_activity_informatie" &gt;
        &lt;/activity&gt;
        &lt;activity
            android:name=".VriendActivity"
            android:label="@string/title_activity_vriend" &gt;
        &lt;/activity&gt;
        &lt;activity
            android:name=".FoldersActivity"
            android:label="@string/title_activity_folders" &gt;
        &lt;/activity&gt;
        &lt;activity
            android:name=".NieuwsActivity"
            android:label="@string/title_activity_nieuws"&gt;
        &lt;/activity&gt;
    &lt;/application&gt;

&lt;/manifest&gt;
</code></pre>