harati
@harati
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return()
map ๋๋ฆด ๋ undefined is not an object ๋จ์๋ ๊ฒ์ ์๋์ฒ๋ผ ๋ฌผ์ํ ๋ฃ์ด์ฃผ์๋ฉด ๋ ๊ฑฐ ๊ฐ์์. {item.phoneNumbers[0]?.number}
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return()
์ด๋ ๊ฒ ๋ง์์ด์ ๊ฐ์? {}๋ก ๊ฐ์ธ์ ธ ์๊ธฐ์ return์ด 2๊ฐ ๋ n๊ฐ ์ธ๊ฑฐ๋ ๋ฌธ์ ๊ฐ ์๋ ๊ฑฐ ๊ฐ์์. render(){ return ( View style={styles.container}> Text onPress={this.changeState} style={styles.text}>{this.state.sampleText}Text> {this.inputText()} Text onPress={this.onAdd} style={styles.text}>{this.state.sampleNum}Text> Text onPress={this.changeState} style={styles.text}>{this.state.sampleText}Text> {this.inputText()} Text onPress={this.onAdd} style={styles.text}>{this.state.sampleNum}Text> PropsChild sampleText={this.state.sampleText} changeState={this.changeState}/> Image source={{uri:this.state.avatar}} style={styles.avatar}> Image> Button title="Add an Image" onPress={()=>this.addImage()} /> Text onPress={this.onAdd} style={styles.text}>{this.state.avatar}Text> { this.state.myContacts.map((item, idx)=>{ return( Text key={idx}> {idx} {item.givenName} {item.phoneNumbers[0]?.number} Text> ) }) } Text> aaaa Text> Button title="Load Contacts" onPress={()=>this.getContacts()} /> View> ) }
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