APP调用电话拨打电话

import {  StyleSheet,Text,TouchableOpacity,Linking } from 'react-native';
<TouchableOpacity activeOpacity={0.8}  onPress={()=>{
                    Linking.canOpenURL('tel:'+电话号码).then(
                      (supported)=>{
                        if(supported){
                          Linking.openURL('tel:'+电话号码)
                        }else{
                          alert('通话失败')
                        }
                      }
                    )
                }}>
                <Text style={{fontSize:FONT_SIZE(16),color:'#333'}} >联系商家</Text> </TouchableOpacity>