JMActionSheetDescription使用描述器組件

JMActionSheetDescription 是 ActionSheet 和 UIActivityViewController 的替代品，使用描述器組件。

使用示例：

//init your description
JMActionSheetDescription *desc = [[JMActionSheetDescription alloc] init];
//Configure your colors
desc.actionSheetTintColor = [UIColor grayColor];
desc.actionSheetCancelButtonFont = [UIFont boldSystemFontOfSize:17.0f];
desc.actionSheetOtherButtonFont = [UIFont systemFontOfSize:16.0f];
//Cancel item
JMActionSheetItem *cancelItem = [[JMActionSheetItem alloc] init];
cancelItem.title = @"Cancel";
desc.cancelItem = cancelItem;
//Can configure a context for your action .. an url ? image ? (work in progress)
JMActionContextItem *contextItem = [[JMActionContextItem alloc] init];
contextItem.image = [UIImage imageNamed:@"gif_experiments"];
contextItem.imageHeight = 200.0f;
desc.contextItem = contextItem;
desc.title = @"Available actions for component";
//item + block
JMActionSheetItem *itemShare = [[JMActionSheetItem alloc] init];
itemShare.title = @"last action";
itemShare.action = ^(void){
    NSLog(@"last action pressed");
};
//Pickeritem + block
JMActionSheetPickerItem *pickerItem = [[JMActionSheetPickerItem alloc] init];
    pickerItem.elements = @[@"One", @"Two", @"three", @"Four"];
    pickerItem.pickerAction = ^(NSString *selectedValue){
        NSLog(@"selectedValue %@",selectedValue);
    };
desc.items = @[itemShare,pickerItem];
[JMActionSheet showActionSheetDescription:desc inViewController:self];