Hibernate4

摘要： 1.UIPickerView的初始化pickerView = [[UIPickerView alloc] initWithFrame:CGRectMake(0.0f, 200.0f, 320.0f, 216.0f)];pickerView.delegate = self; //指定DelegatepickerView.showsSelectionIndicator = YES; //显示选中框2.实现UIPickerViewDelegate和UIPickerViewDataSource- (NSInteger)numberOfComponentsInPickerView:(UIPickerVi 阅读全文