title: React-native: How to Show the tooltip with out clicking on marker in react-native-maps
body: <p>I am using react-native-maps module.I have given lat and long values and i have used MapView.Marker to show the Marker and tooltip when clicking on the marker.</p>
  
  <p>But, Now I want to show the tooltip with out clicking on the marker when the map loads initially.</p>
  
  <p>this is my code here:</p>
  
  <pre><code>&lt;View style={styles.page}&gt;
          &lt;MapView
            ref="map"
            style={styles.map}
            region={this.state.region}
            provider = {PROVIDER_DEFAULT}
            zoomEnabled={true}
            onRegionChange={this.onRegionChange.bind(this)}
            pitchEnabled={true}
            showsCompass={true}
            liteMode={false}
            showsBuildings={true}
            showsTraffic={true}
            showsIndoors={true}
          &gt;
          &lt;MapView.Marker
        coordinate={this.state.marker.latlng}
        title={this.state.marker.title}
        description={this.state.marker.description}
        image={require('./assets/pin.png')}
  
      /&gt;
  
          &lt;/MapView&gt;
        &lt;/View&gt;
  </code></pre>
  
  <p>Can any one help how to solve this...</p>