I am a iOS developer, but I know a a little javascript. I am trying to use the AlertIOS, the document api is this
我是iOS开发人员，但我知道一点点javascript。我正在尝试使用AlertIOS，文档api就是这个
static alert(title: string, message?: string, buttons?: Array<{ text: ?string; onPress: ?Function; }>)
I am confused with the parameters. I tried to write like this, but it says it's wrong.
我对参数感到困惑。我试着这样写，但它说这是错的。
AlertIOS('Username empty', 'Please type your username', buttons: {{text: 'Cancel', onPress: onPressCancel}});
Could anyone explain me how to call this function and the syntax?
任何人都可以解释我如何调用此函数和语法？
1 个解决方案
#1
4
If you look at the documentation, it's says that there's an AlertIOS API with a static method called alert. That means you can call it like this:
如果你查看文档，就会说有一个AlertIOS API，它带有一个名为alert的静态方法。这意味着你可以像这样调用它：
AlertIOS.alert('Username empty', 'Please type your username', [{text: 'Cancel', onPress: onPressCancel}]);
Notice that you also don't need the "buttons:" prefix for the buttons array - that part of your call wasn't valid syntax anyway.
请注意，您还不需要按钮数组的“buttons：”前缀 - 无论如何，您的调用部分都不是有效的语法。
The method signature for alert is documented using Flow type annotations. Each argument is described like this:
使用Flow类型注释记录警报的方法签名。每个参数都描述如下：
- name of argument: type of argument
- 参数名称：参数类型
And if the name has a question mark, that argument is optional. So, in this case the arguments are:
如果名称有问号，那么该参数是可选的。因此，在这种情况下，参数是：
- title, with a type of string
- 标题，带有一种字符串
- message, with a type of string (optional)
- 消息，带有字符串类型（可选）
- buttons, with a type of array (optional)
- 按钮，带有一种数组（可选）
You'll also need to make sure you require the AlertIOS API, probably something like this:
您还需要确保需要AlertIOS API，可能是这样的：
var {
AppRegistry,
StyleSheet,
View,
AlertIOS
} = React;
Hope that helps.
希望有所帮助。
#1
4
If you look at the documentation, it's says that there's an AlertIOS API with a static method called alert. That means you can call it like this:
如果你查看文档，就会说有一个AlertIOS API，它带有一个名为alert的静态方法。这意味着你可以像这样调用它：
AlertIOS.alert('Username empty', 'Please type your username', [{text: 'Cancel', onPress: onPressCancel}]);
Notice that you also don't need the "buttons:" prefix for the buttons array - that part of your call wasn't valid syntax anyway.
请注意，您还不需要按钮数组的“buttons：”前缀 - 无论如何，您的调用部分都不是有效的语法。
The method signature for alert is documented using Flow type annotations. Each argument is described like this:
使用Flow类型注释记录警报的方法签名。每个参数都描述如下：
- name of argument: type of argument
- 参数名称：参数类型
And if the name has a question mark, that argument is optional. So, in this case the arguments are:
如果名称有问号，那么该参数是可选的。因此，在这种情况下，参数是：
- title, with a type of string
- 标题，带有一种字符串
- message, with a type of string (optional)
- 消息，带有字符串类型（可选）
- buttons, with a type of array (optional)
- 按钮，带有一种数组（可选）
You'll also need to make sure you require the AlertIOS API, probably something like this:
您还需要确保需要AlertIOS API，可能是这样的：
var {
AppRegistry,
StyleSheet,
View,
AlertIOS
} = React;
Hope that helps.
希望有所帮助。