iOS简易抽屉效果

概述iOS简易抽屉效果

下面是内存溢出 jb51.cc 通过网络收集整理的代码片段。

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直接在controller里面加代码实现的抽屉效果

@interface VIEwController () {    UIVIEw* _leftVIEw;} @end @implementation VIEwController - (voID)vIEwDIDLoad {    [super vIEwDIDLoad];    // Do any additional setup after loading the vIEw,typically from a nib.         _leftVIEw = [[UIVIEw alloc] init];    //把左侧边的vIEw先隐藏    _leftVIEw.frame = CGRectMake(-200,200,self.vIEw.frame.size.height);    _leftVIEw.backgroundcolor = [UIcolor greencolor];    [self.vIEw addSubvIEw:_leftVIEw];         UIPanGestureRecognizer* pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(handlePan:)];    [self.vIEw addGestureRecognizer:pan];} - (voID)handlePan:(UIPanGestureRecognizer*) recognizer {    CGPoint translation = [recognizer translationInVIEw:self.vIEw];    //增量后的x坐标位置    CGfloat Xresult = translation.x + _leftVIEw.frame.origin.x;         //向右    if (translation.x >= 0) {        //leftVIEw已全部拉出，则无法再向右        if (_leftVIEw.frame.origin.x >= 0 || Xresult >= 0) {            _leftVIEw.frame = CGRectMake(0,self.vIEw.frame.size.height);                         return;        }    } else if (translation.x < 0) {//向左        //leftVIEw已全部收回，则无法再向左        if (_leftVIEw.frame.origin.x <= -200 || Xresult <= -200) {            _leftVIEw.frame = CGRectMake(-200,self.vIEw.frame.size.height);            return;        }    }         CGRect frame = _leftVIEw.frame;    frame.origin.x += translation.x;    _leftVIEw.frame = frame;         //清空移动的距离，这是关键    [recognizer setTranslation:CGPointZero inVIEw:recognizer.vIEw];         //做d回效果，以中轴为界限    if (recognizer.state == UIGestureRecognizerStateEnded) {        if (_leftVIEw.frame.origin.x > -100) {            [self closeVIEw:NO];        } else {            [self closeVIEw:YES];        }    }} - (voID)closeVIEw:(BOol)close {    if (close) {        [self moveVIEw:CGRectMake(-200,self.vIEw.frame.size.height)];    } else {        [self moveVIEw:CGRectMake(0,self.vIEw.frame.size.height)];    }} - (voID)moveVIEw:(CGRect)frame {    [UIVIEw animateWithDuration:0.3 animations:^{        _leftVIEw.frame = frame;    } completion:^(BOol finished) {             }];}

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总结

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