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<!DOCTYPE html>
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<title>Flutter + firebase auth crashing - Sipmann</title>
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<meta property="og:site_name" content="Sipmann"> <meta property="og:type" content="article">
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<meta property="article:author" content="Maurício Camargo Sipmann">
<meta name="description" content="Hey Folks, recently I've started learning Flutter and right after a TODO List, I tried a Firebase integration. But as soon as I started setting the dependencies, my app stopped opening... just a crash. After a few logs digging, I've found the following log. AndroidRuntime: FATAL EXCEPTION: main AndroidRuntime: Process …">
<meta property="og:description" content="Hey Folks, recently I've started learning Flutter and right after a TODO List, I tried a Firebase integration. But as soon as I started setting the dependencies, my app stopped opening... just a crash. After a few logs digging, I've found the following log. AndroidRuntime: FATAL EXCEPTION: main AndroidRuntime: Process …">
<meta property="article:published_time" content=" 2019-10-03 ">
<meta property="article:section" content="Flutter"> <meta property="article:tag" content="flutter"> <meta property="article:tag" content="firebase"> <meta property="article:tag" content="ArrayMap"> <meta property="article:tag" content="NoClassDefFound">
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<h1><b><a href="https://www.sipmann.com/flutter_with_firebase_auth_crashing.html" title="Permalink to Flutter + firebase auth crashing">Flutter + firebase auth crashing</a></b></h1>
<h5>
<i class="fa fa-calendar"></i><time class="w3-opacity" datetime="2019-10-03T19:00:00-03:00"> Thu 03 October 2019</time>
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<p><p>Hey Folks, recently I've started learning <a href="https://flutter.dev/">Flutter</a> and right after a TODO List, I tried a Firebase integration. But as soon as I started setting the dependencies, my app stopped opening... just a crash. After a few logs digging, I've found the following log.</p>
<div class="highlight"><pre><span></span><code>AndroidRuntime: FATAL EXCEPTION: main
AndroidRuntime: Process: com.example.diadocasal, PID: <span class="m">13672</span>
AndroidRuntime: java.lang.NoClassDefFoundError: Failed resolution of: Landroid/support/v4/util/ArrayMap<span class="p">;</span>
AndroidRuntime: at com.google.android.gms.internal.measurement.zzca.<clinit><span class="o">(</span>Unknown Source:60<span class="o">)</span>
AndroidRuntime: at com.google.android.gms.internal.measurement.zzcm.zzr<span class="o">(</span>Unknown Source:7<span class="o">)</span>
AndroidRuntime: at com.google.android.gms.measurement.internal.zzfj.<init><span class="o">(</span>Unknown Source:23<span class="o">)</span>
</code></pre></div>
<p>Notice the "NoClassDefFound" of an ArrayMap. To solve that I did the following changes to the files:</p>
<div class="highlight"><pre><span></span><code><span class="c1">//build.gradle file</span>
<span class="n">ext</span><span class="p">.</span><span class="na">kotlin_version</span> <span class="o">=</span> <span class="err">'</span><span class="mf">1.3.20</span><span class="err">'</span>
<span class="o">[</span><span class="p">...</span><span class="o">]</span>
<span class="n">dependencies</span> <span class="p">{</span>
<span class="n">classpath</span> <span class="err">'</span><span class="n">com</span><span class="p">.</span><span class="na">android</span><span class="p">.</span><span class="na">tools</span><span class="p">.</span><span class="na">build</span><span class="p">:</span><span class="n">gradle</span><span class="p">:</span><span class="mf">3.3.0</span><span class="err">'</span> <span class="c1">// gradle version</span>
</code></pre></div>
<div class="highlight"><pre><span></span><code><span class="c1">;gradle.properties file</span>
<span class="na">org.gradle.jvmargs</span><span class="o">=</span><span class="s">-Xmx1536M ;mine have just this line at first</span>
<span class="na">android.useAndroidX</span><span class="o">=</span><span class="s">true ; uses androidX instead of the default support library</span>
<span class="na">android.enableJetifier</span><span class="o">=</span><span class="s">true ; uses jetpack libraries</span>
<span class="na">android.enableR8</span><span class="o">=</span><span class="s">true ; the new code shriker</span>
</code></pre></div>
<p>After that, voilà, app up and running.</p></p>
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