自定义比例裁剪

LDImagePicker

用法:

#import "LDImagePicker.h"   LDImagePicker *imagePicker = [LDImagePicker sharedInstance];

    imagePicker.delegate=self;

    //设置宽高比scale来设置剪切框大小，剪切框宽度固定为屏幕宽度  

//0 相机 1图片

    [imagePickershowImagePickerWithType:0  InViewController:self Scale:0.5625];//比例自定

- (void)imagePickerDidCancel:(LDImagePicker*)imagePicker{

}

- (void)imagePicker:(LDImagePicker*)imagePicker didFinished:(UIImage*)editedImage{

    self.imageViewUrl= editedImage;//图片

}