当虚拟键盘出现在本机反应中时如何自动向上滚动屏幕（在 android 上）

Question

The virtual keyboard covers the text inputs and I cannot see what I'm typing. How to avoid this ? ( I tried using KeyboardAwareScrollView but it still covers the text inputs). Another issue that I got was an error regarding my styles.container attributes -> justifyContent and alignItems - it said put those inside the ScrollView property - I'm not sure how to do that - I'm new to React native.

  render() {
    return (
      <KeyboardAwareScrollView>
      <View style={styles.container} >
         <TextInput
          style={styles.input}
          underlineColorAndroid="transparent"
          placeholder="username"
          placeholderTextColor="#00bcd4"
          autoCapitalize="none"
          secureTextEntry={true}
          onChangeText={username => this.setState({ username })}  

          />
          <View style={styles.btnContainer}>     
         <TouchableOpacity style={styles.userBtn}  onPress={() => this.Login(this.state.email, this.state.password)}>
                   <Text style={styles.btnTxt}>Login</Text>
         </TouchableOpacity>

        </View>
      </View>
      </KeyboardAwareScrollView>

with KeyboardAvoidingView also, the same thing:

  render() {
    return (
      // <View style={styles.container} >
         <KeyboardAvoidingView behavior="padding" style={styles.container}>
         <Text style={styles.heading} >Welcome to SelfCare !</Text>
          <Image
          style={{width: 200, height: 200, marginBottom: 40}}
          source={require('./src/images/icon.png')}
          />
         <TextInput
          style={styles.input}
          underlineColorAndroid="transparent"
          placeholder="Email"
          placeholderTextColor="#00bcd4"
          autoCapitalize="none"
          onChangeText={email => this.setState({ email })}  
             />
         <TextInput
          style={styles.input}
          underlineColorAndroid="transparent"
          placeholder="Password"
          placeholderTextColor="#00bcd4"
          autoCapitalize="none"
          secureTextEntry={true}
          onChangeText={password => this.setState({ password })}  

          />
          <View style={styles.btnContainer}>     
         <TouchableOpacity style={styles.userBtn}  onPress={() => this.Login(this.state.email, this.state.password)}>
                   <Text style={styles.btnTxt}>Login</Text>
         </TouchableOpacity>
         <TouchableOpacity style={styles.userBtn}  onPress={() => this.SignUp(this.state.email, this.state.password)}>
                   <Text style={styles.btnTxt}>Sign Up</Text>
         </TouchableOpacity>         
        </View>
        </KeyboardAvoidingView>
      // </View>
    );
  }
}

Answer 1

If you want the screen to go up you could use
<KeyboardAvoidingView> instead of <KeyboardAwareScrollView>
it is easier to implement and does the same work unless you want the user to be able to scroll the screen while the keyboard is opened.

behavior='padding' << this prop is for the screen how to act. It also takes [height, position] as a value.

<View style={styles.container}>
   <KeyboardAvoidingView behavior="padding">

         ... Your UI ...

   </KeyboardAvoidingView>
</View>

or for shorthand you could replace <View> with <KeyboardAvoidingView> as so:

<KeyboardAvoidingView behavior="padding" style={styles.container}>

         ... Your UI ...

</KeyboardAvoidingView>