//uipickview和tableview一樣,想要展示資料也要設定資料來源和**
//設定資料來源
self
.pickview.datasource =
self
;//設定**
self
.pickview.delegate =
self
;//遵守資料來源,**協議:
@inte***ce viewcontroller (
)@property
(weak, nonatomic) iboutlet uipickerview *pickview;
@end
//實現資料來源**方法:
//總共有多少列
-(nsinteger)numberofcomponentsinpickerview:
(uipickerview*
)pickerview
//第component列有多少行.
-(nsinteger)pickerview:
(uipickerview *
)pickerview numberofrowsincomponent:
(nsinteger)component
//返回每一列的寬度
-(cgfloat)pickerview:
(uipickerview *
)pickerview widthforcomponent:
(nsinteger)component
//返回每一行的高度
-(cgfloat)pickerview:
(uipickerview *
)pickerview rowheightforcomponent:
(nsinteger)component
//每一行展示什麼內容
-(nullable nsstring *
)pickerview:
(uipickerview *
)pickerview titleforrow:
(nsinteger)row forcomponent:
(nsinteger)component
//返回每一行的檢視uiview
-(uiview *
)pickerview:
(uipickerview *
)pickerview viewforrow:
(nsinteger)row forcomponent:
(nsinteger)component reusin**iew:
(nullable uiview *
)view
//當前選中的是哪一列的哪一行-(
void
)pickerview:
(uipickerview *
)pickerview didselectrow:
(nsinteger)rowincomponent:
(nsinteger)component
@inte***ce viewcontroller: uiviewcontroller
@end
@inte***ce
viewcontroller()
@property
(nonatomic, weak) iboutlet uilabel *showlabel;
@property
(nonatomic,weak) iboutlet uipickview *pickview;
@property
(nonatomic,strong) nsarray *array;
@end
@implementation viewcontroller-(
void
)viewdidload-(
void
)array
return _array;
}//實現資料來源**方法:
//總共有多少列
-(nsinteger)numberofcomponentsinpickerview:
(uipickerview*
)pickerview
//第component列有多少行.
-(nsinteger)pickerview:
(uipickerview *
)pickerview numberofrowsincomponent:
(nsinteger)component
//返回每一列的寬度
-(cgfloat)pickerview:
(uipickerview *
)pickerview widthforcomponent:
(nsinteger)component
//返回每一行的高度
-(cgfloat)pickerview:
(uipickerview *
)pickerview rowheightforcomponent:
(nsinteger)component
//每一行展示什麼內容
-(nullable nsstring *
)pickerview:
(uipickerview *
)pickerview titleforrow:
(nsinteger)row forcomponent:
(nsinteger)component
//返回每一行的檢視uiview
-(uiview *
)pickerview:
(uipickerview *
)pickerview viewforrow:
(nsinteger)row forcomponent:
(nsinteger)component reusin**iew:
(nullable uiview *
)view
//當前選中的是哪一列的哪一行-(
void
)pickerview:
(uipickerview *
)pickerview didselectrow:
(nsinteger)row incomponent:
(nsinteger)component
@end
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