title: Element with absolute position is cut off by other component
body: <p>I have a toolbar in my RN app. That toolbar has a button that is oversized on purpose and is overflowing from the component.<br>
  The oversized button is covered by an other component in the same page.<br>
  <a href="https://i.stack.imgur.com/SmXzS.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/SmXzS.jpg" alt="enter image description here"></a></p>
  
  <pre><code>  touchable:{
      backgroundColor:'#3d3d3d',
      borderRadius:27.5,
      position:'absolute',
      left:width/2 -25,
      bottom:10,
      alignItems:'center',
      borderColor:'black',
      width:55,
      height:55,
      justifyContent:'center',
    }
  </code></pre>
  
  <p>Mark up:</p>
  
  <pre><code>  render() {
      return (
      &lt;View style={{flex: 1}}&gt;
        &lt;View style={{position:'absolute', width:42,height:42,left:20,top:(height-42)/3,zIndex:3}}&gt;
            &lt;Image style={{}} source={require('./Images/Ellipse 36.png')} /&gt;
            &lt;Image style={{position:'absolute',top:14,left:14}} source={require('./Images/Asset 65.png')} /&gt;
        &lt;/View&gt;
        &lt;View style={{position:'absolute', width:42,height:42,right:20,top:(height-42)/3,zIndex:3}}&gt;
            &lt;Image style={{}} source={require('./Images/Ellipse 36.png')} /&gt;
            &lt;Image style={{position:'absolute',top:10,left:12}} source={require('./Images/Asset 66.png')} /&gt;
        &lt;/View&gt;
        &lt;View&gt;&lt;TopToolbar text='Swipe' navigator={this.props.navigator} user={this.props.user}/&gt;&lt;/View&gt;
        &lt;ScrollView style={{zIndex:1,}}&gt;&lt;Inders style={{flex: 1}} navigator={this.props.navigator} credentials={this.props.credentials}/&gt;&lt;/ScrollView&gt;
        &lt;View style={{zIndex:0,}}&gt;&lt;BottomToolbar user={this.props.user} navigator={this.props.navigator} credentials={this.props.credentials}/&gt;&lt;/View&gt;
      &lt;/View&gt;
      )
    }
  </code></pre>
  
  <p>Where Inders is a component.<br>
  I tried changing the order of the components but it didn't work.<br>
  What is the way to make a button "float" from another component? </p>