如何设置将原生按钮设置为全宽

Question

我已经尝试了所有的例子，但我无法弄清楚。我正在使用这个https://github.com/xinthink/react-native-material-kit

如果我使用尺寸作为宽度按钮宽度离开屏幕。我希望如果可能的话，最顶部的标识和按钮上的表格和按钮。这仅适用于Android。

 const btnStyle = {
btn: {
    flex: 1,
    flexDirection: "row"
    //resizeMode: 'cover'
}
};
const ColoredRaisedButton = MKButton.coloredButton()
.withStyle(btnStyle.btn)
.build();

<ScrollView style={styles.scrollView}>
<View style={styles.container}>
    {/* Here the magic happens*/}
    <View style={styles.cardStyle}>
        <Image
            source={require("./../img/logo_login.jpg")}
            style={styles.cardImageStyle}
        />
        <View style={styles.cardContentStyle}>
            <Form
                ref="form"
                type={User}
                onChange={this.onChange.bind(this)}
                value={this.state.value}
                options={options}
            />
        </View>
        <View style={styles.cardActionStyle}>
            <ColoredRaisedButton>
                <Text pointerEvents="none" style={styles.buttonText}>
                    BUTTON
                </Text>
            </ColoredRaisedButton>
        </View>
    </View>
</View>
</ScrollView>;

const styles = {
cardStyle: {
    flex: 1,
    backgroundColor: "#ffffff",
    borderRadius: 2,
    borderColor: "#ffffff",
    borderWidth: 1,
    shadowColor: "rgba(0,0,0,.12)",
    shadowOpacity: 0.8,
    shadowRadius: 2,
    alignItems: "center",
    flexDirection: "column",
    justifyContent: "center",
    shadowOffset: {
        height: 1,
        width: 2
    }
},
cardImageStyle: {
    flex: 1,
    height: 170,
    flexDirection: "row",
    resizeMode: "cover"
},
cardContentStyle: {
    padding: 15 //,
    // bottom:0,
    // position:'absolute',
    //justifyContent: 'flex-end'
},
cardActionStyle: {
    flex: 1,
    borderStyle: "solid",
    borderTopColor: "rgba(0,0,0,.1)",
    borderTopWidth: 1,
    padding: 15,
    alignItems: "center",
    flexDirection: "column",
    justifyContent: "center"
},
scrollView: {
    flex: 1
},
container: {
    flex: 1,
    alignItems: "stretch",
    backgroundColor: "#eae9e9",
    padding: 20 //,
    //position:'absolute'
},
buttonText: {
    fontSize: 14,
    fontWeight: "bold",
    color: "white"
}
};

Answer 1

你应该从alignItems: 'center'和cardStyle中删除cardActionStyle，然后你应该得到一个全宽按钮。

Answer 2

您可以使用此模式：

<View style={[{width:"100%"}]}>
    <Button
        onPress={this.closeModal}
        title="Close"
        color="#841584"
        style={[{borderRadius: 5,}]}
        hardwareAccelerated
    />
</View> 

Answer 3

在React Native中设置按钮宽度和高度让我们使用下面的源来帮助设置按钮的宽度和高度。在这里，您需要在视图布局中指定按钮宽度和高度参数。

<View style={[{ width: "90%", margin: 10, backgroundColor: "red" }]}>
   <Button
      onPress={this.buttonClickListener}
      title="Button Three"
      color="#90A4AE"
    />
</View>