CSS*_*t69 6 javascript firebase react-native google-cloud-firestore react-native-firebase
所以我最近遇到了文本标签中显示的错误,尽管我找不到它显示的原因。我已记录该值不为空并且在按下按钮之前该值已存在。这是我的 jsx 代码:
<TouchableOpacity style={styles.profilePhotoBack} onPress={() => addProfilePhoto()}>
{profilePhoto ? (
<Image style={styles.image} source={{uri: profilePhoto}} />
) : (
<View style={styles.profilePhoto}>
<AntDesign name="plus" size={50} color="white" />
</View>
)};
</TouchableOpacity>
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这是我的函数代码以及状态:
const [profilePhoto, setProfilePhoto] = useState();
const getPermission = async () => {
if (Platform.OS !== "web") {
const { status } = await Permissions.askAsync(Permissions.CAMERA_ROLL);
return status;
}
};
const pickImage = async () => {
try {
let result = await ImagePicker.launchImageLibraryAsync({
mediaTypes: ImagePicker.MediaTypeOptions.Images,
allowsEditing: true,
aspect: [1, 1],
quality: 0.5
});
if (!result.cancelled) {
setProfilePhoto(result.uri);
}
} catch (err) {
alert("Error picking image. Please try again later.");
}
};
const addProfilePhoto = async () => {
const status = await getPermission();
if (status !== "granted") {
alert("Please allow access to your camera roll to create your profile photo.");
return;
}
await pickImage();
};
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任何帮助将不胜感激,因为我已经被困在这里相当长一段时间了。谢谢你!
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