iOS开发 纯代码适配技巧 baseViewController

这个类的作用是“适配”，让所有继承它的子类自动适配各种版本及屏幕尺寸的情况，自动适配显示和隐藏状态栏的情况，自动适配屏幕旋转的情况。

   这个类比较适合纯代码开发项目，它的内部有两个公共属性，都是 UIView。一个作为自定义导航栏的superView，另作为除导航栏外的其他界面元素的superView。

   它会自动监测当前设备是什么IOS版本，设备的屏幕尺寸是多少。因为用到了autolayout,所以自动适配屏幕旋转。

001#import <UIKit/UIKit.h>

002 

003@interface BaseViewController : UIViewController

004 

005@property (nonatomic, strong) UIView *navigationBarView;

006@property (nonatomic, strong) UIView *backgroundView;

007 

008- (id)initWithBarHeight:(CGFloat)barHeight;

009 

010- (CGRect)getBaseNavigationBarFrame;

011- (CGRect)getBaseBackgroundViewFrame;

012 

013@end

014 

015#import "BaseViewController.h"

016 

017@interface BaseViewController ()

018 

019@property (nonatomic, assign) CGFloat barHight;

020 

021@property (nonatomic, assign) CGRect navigationBarFrame;

022@property (nonatomic, assign) CGRect backgroundViewFrame;

023 

024@end

025 

026@implementation BaseViewController

027 

028- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil

029{

030    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];

031    if (self) {

032        // Custom initialization

033    }

034    return self;

035}

036 

037- (id)initWithBarHeight:(CGFloat)barHeight

038{

039    self = [super initWithNibName:nil bundle:nil];

040    if (self) {

041         

042        self.barHight = barHeight;

043    }

044     

045    return self;

046}

047 

048- (void)viewDidLoad

049{

050    [super viewDidLoad];

051    //导航条View

052    self.navigationBarView = [[UIView alloc] init];

053    self.navigationBarView.backgroundColor = [UIColor clearColor];

054     

055    //除导航条外的背景View

056    self.backgroundView = [[UIView alloc] init];

057    self.backgroundView.backgroundColor = [UIColor clearColor];

058    self.backgroundView.clipsToBounds = NO;

059    [self.view addSubview:self.backgroundView];

060    [self.view addSubview:self.navigationBarView];

061     

062    self.navigationBarFrame = self.view.bounds;

063    self.backgroundViewFrame = self.view.bounds;

064 

065    if ([UIApplication sharedApplication].statusBarHidden == YES) {

066         

067        [self statusBarIsHidden];

068         

069    }else {

070         

071        [self statusBarIsShow];

072    }

073}

074 

075- (void)statusBarIsHidden

076{

077    [self autoLayoutWithV6Height:self.barHight V7Height:self.barHight];

078}

079 

080- (void)statusBarIsShow

081{

082    [self autoLayoutWithV6Height:self.barHight V7Height:self.barHight + 20];

083}

084 

085- (void)autoLayoutWithV6Height:(CGFloat)v6Height V7Height:(CGFloat)v7Height

086{

087    if ([self.view respondsToSelector:@selector(addConstraints:)]) {

088         

089        [self.navigationBarView setTranslatesAutoresizingMaskIntoConstraints:NO];

090        [self.backgroundView setTranslatesAutoresizingMaskIntoConstraints:NO];

091         

092        UIView *navigationBarView = self.navigationBarView;

093        UIView *backgroundView = self.backgroundView;

094         

095        CGRect tmpNavigationBarFrame = self.navigationBarFrame;

096        CGRect tmpBackgroundViewFrame = self.backgroundViewFrame;

097         

098        //横向自动布局

099        NSArray *layoutConstraints1 = [NSLayoutConstraint constraintsWithVisualFormat:@"H:|-0-[navigationBarView]-0-|" options:0 metrics:nil views:@{@"navigationBarView":navigationBarView}];

100         

101        [self.view addConstraints:layoutConstraints1];

102         

103        NSArray *layoutConstraints2 = [NSLayoutConstraint constraintsWithVisualFormat:@"H:|-0-[backgroundView]-0-|" options:0 metrics:nil views:@{@"backgroundView":backgroundView}];

104         

105        [self.view addConstraints:layoutConstraints2];

106         

107        //纵向自动布局

108        NSArray *layoutConstraints3 = nil;

109         

110        if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7) {

111             

112            NSString *formatString = [NSString stringWithFormat:@"V:|-0-[navigationBarView(==%f)]-0-[backgroundView]-0-|", v7Height];

113             

114            layoutConstraints3 = [NSLayoutConstraint constraintsWithVisualFormat:formatString options:0 metrics:nil views:@{@"navigationBarView":navigationBarView, @"backgroundView":backgroundView}];

115             

116            tmpNavigationBarFrame.size.height = v7Height;

117            tmpBackgroundViewFrame.size.height = self.view.frame.size.height - v7Height;

118            tmpBackgroundViewFrame.origin.y = v7Height;

119             

120        }else {

121             

122            NSString *formatString = [NSString stringWithFormat:@"V:|-0-[navigationBarView(==%f)]-0-[backgroundView]-0-|", v6Height];

123             

124            layoutConstraints3 = [NSLayoutConstraint constraintsWithVisualFormat:formatString options:0 metrics:nil views:@{@"navigationBarView":navigationBarView, @"backgroundView":backgroundView}];

125             

126            tmpNavigationBarFrame.size.height = v6Height;

127            tmpBackgroundViewFrame.size.height = self.view.frame.size.height - v6Height;

128            tmpBackgroundViewFrame.origin.y = v6Height;

129        }

130         

131        [self.view addConstraints:layoutConstraints3];

132         

133        self.navigationBarFrame = tmpNavigationBarFrame;

134        self.backgroundViewFrame = tmpBackgroundViewFrame;

135         

136    }else {

137         

138        //Autoresizing代码

139        CGRect frame = [UIScreen mainScreen].bounds;

140         

141        self.navigationBarView.frame = CGRectMake(0, 0, frame.size.width, v6Height);

142        self.navigationBarView.autoresizingMask = UIViewAutoresizingFlexibleTopMargin|UIViewAutoresizingFlexibleWidth;

143         

144        self.backgroundView.frame = CGRectMake(0, v6Height, frame.size.width, frame.size.height - v6Height);

145         

146        self.navigationBarFrame = self.navigationBarView.frame;

147        self.backgroundViewFrame = self.backgroundView.frame;

148    }

149}

150 

151- (CGRect)getBaseNavigationBarFrame

152{

153    return self.navigationBarFrame;

154}

155 

156- (CGRect)getBaseBackgroundViewFrame

157{

158    return self.backgroundViewFrame;

159}

160 

161@end