disable text input after entering some input value in react native

Question

This is the text input that I am using, I want the input field to be disabled after entering a value.I tried using editable props, but it did not help. I am completely new to react native, please help with an example.

<View style={editProfileStyle.textinputView}>
  <TextInput
    style={editProfileStyle.textInput}
    placeholder="Enter your Specialization"
    value={this.state.subQualification}
    onChangeText={subQualification => this.setState({ subQualification: subQualification })} 
  />
</View>

Answer 1

As per the question, since the field should get disabled when it has some value:

<View style={editProfileStyle.textinputView}>
              <TextInput
                editable={this.state.subQualification.length === 0}
                style={editProfileStyle.textInput}
                placeholder="Enter your Specialization"
                value={this.state.subQualification}
                onChangeText={subQualification => this.setState({ subQualification: subQualification })} 
              />
</View>

using check in your editable prop of

editable={this.state.subQualification.length === 0} will make field editable when nothing in present in the field