PGPickerView是將UIPickerView的彎曲弧度變成直列表，可以是單列表，多列表，還可以修改選中label的字型顏色等。

#GitHub Address https://github.com/xiaozhuxiong121/PGPickerView

Installation with CocoaPods

pod 'PGPickerView'
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Usage

PGPickerView *pickerView = [[PGPickerView alloc]initWithFrame:self.view.bounds];
pickerView.delegate = self;
pickerView.dataSource = self;
[self.view addSubview:pickerView];

#pragma PGPickerViewDataSource
- (NSInteger)numberOfComponentsInPickerView:(PGPickerView *)pickerView {
    return 2;
}

- (NSInteger)pickerView:(PGPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component {
    return 10;
}
#pragma  PGPickerViewDelegate
- (nullable NSString *)pickerView:(PGPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component {
    return [NSString stringWithFormat:@"label%ld--%ld", component, row];
}

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