iphone如何根据base sdk版本确定并编码？

发布于 2024-09-05 20:37:54 字数 790 浏览 4 评论 0原文

我有一个 UIImage 选择器的代码

 photoImagePicker=[[UIImagePickerController alloc]init];
photoImagePicker.delegate=self;
photoImagePicker.sourceType=UIImagePickerControllerSourceTypeCamera;
photoImagePicker.mediaTypes=[UIImagePickerController availableMediaTypesForSourceType:photoImagePicker.sourceType];
[self presentModalViewController:photoImagePicker animated:YES];

photoImagePicker.showsCameraControls = YES; //Doesnot work on 3.0
photoImagePicker.navigationBarHidden = YES;
photoImagePicker.toolbarHidden = YES;
photoImagePicker.allowsEditing=YES; //Doesnt work on 3.0

现在，当 sdk 为 3.1 或更高版本时，一切正常，但当我将操作系统版本设置为 3.0 时，代码开始显示错误。结果这些方法在 3.0 中不存在，因此出现错误。我想保留一种机制，使这些能够适用于更高版本（3.1），同时适用于 3.0 版本。我该怎么做？

我想到的一种解决方案是验证版本值，然后输入该代码。但我不确定这是怎么得到的。任何帮助将不胜感激。

原文

I have a code for UIImage picker

 photoImagePicker=[[UIImagePickerController alloc]init];
photoImagePicker.delegate=self;
photoImagePicker.sourceType=UIImagePickerControllerSourceTypeCamera;
photoImagePicker.mediaTypes=[UIImagePickerController availableMediaTypesForSourceType:photoImagePicker.sourceType];
[self presentModalViewController:photoImagePicker animated:YES];

photoImagePicker.showsCameraControls = YES; //Doesnot work on 3.0
photoImagePicker.navigationBarHidden = YES;
photoImagePicker.toolbarHidden = YES;
photoImagePicker.allowsEditing=YES; //Doesnt work on 3.0

Now everything works fine when the sdk is 3.1 or higher but when i put the os version as 3.0, the code starts showing errors. Turns out these methods were not present in 3.0 and so errors. I want to keep a mechanism which will enable these for higher versions(3.1) and at the same time work properly for 3.0 version.
How do i do it?

One solution i have thought of is to verify the version value and then put that code. But i am not sure how this is got. Any help will be appreciated.

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