modal not open in react-native android - react-native

Question

I am Developing react-native Android Sample App. Firstly I Created One Page inside Tab bar Bottom On Page ... In TabBar Contains OneTabPage have contains open Two Modals ( one Is Using Edit and another Date showing to modal's custom Desing) modal and one Button has EditButton when i was click on editIcon show Modal it's working fine iOS. But in android when i was go to click on next tab and come back to current Page it's not working Modal means not Open(android).
I am following refer this link : https://github.com/bodyflex/react-native-simple-modal
This is my Code:
<Modal
open={this.state.open}
offset={0}
animationDuration={200}
animationTension={40}
open={this.state.open}
closeOnTouchOutside={true}
modalDidOpen={() => console.log('modal did open')}
modalDidClose={() => this.setState({open: false})}
style={{flexGrow: 1,
height:windowSize.height/2.5}}>
<View style={styles.modelView}>
<View style={{flex:.25, justifyContent:'center', alignItems:'center'}}>
<Text style={{fontSize:16, fontWeight:'bold',textAlign:'center', color:'black'}}>
{this.state.product_title}
</Text>
</View>
<View style={{flex:.35, justifyContent:'center', alignItems:'center'}}>
<View style={styles.modelIncDecButton}>
<TouchableOpacity style={{flex:.15, justifyContent:'space-around', alignItems:'center'}} onPress={this.decrementMethode.bind(this)}>
<Image style={styles.incrementDecrementIcon} source={require('#images/decrementIcon.png')} />
</TouchableOpacity>
<View style={{flex:.05, justifyContent:'center', alignItems:'center'}}>
<Text style={{fontSize:16, fontWeight:'bold',textAlign:'center',color:'black'}}>
{this.state.product_quantity}
</Text>
</View>
<TouchableOpacity style={{flex:.15, justifyContent:'space-around', alignItems:'center'}} onPress={this.incrementMethode.bind(this)}>
<Image style={styles.incrementDecrementIcon} source={require('#images/incrementIcon.png')} />
</TouchableOpacity>
</View>
</View>
<View style={{flex:.15, justifyContent:'center', alignItems:'center'}}>
<Text style={{fontSize:16, fontWeight:'bold',textAlign:'center',color:'black'}}>
£ {(Math.floor(this.state.product_total * 100) / 100).toFixed(2)}
</Text>
</View>
<View style={{flex:.25, justifyContent:'center', alignItems:'center'}}>
<TouchableOpacity style={styles.updateButton} onPress={this.updateMethode.bind(this)}>
<Text style={styles.updateButtonText}>
Update
</Text>
</TouchableOpacity>
</View>
</View>
</Modal>
the above code based i am following this link :
enter link description here
Thans in Advance