iOS制作带弹跳动画发布界面

项目中经常会用到带弹跳动画发布界面，具体内容如下

效果图：

代码：

// publishview.m
// uiimage+imageeffects.h 苹果蒙化图片的分类 pop.h弹跳动画框架 ejextension.h模型转换框架
// composemodel 用于设置按钮文字与图片的模型，在本地设置plist文件保存image（按钮图片）和text（按钮文字）

#import "publishview.h"
#import "bsverticalbutton.h"
#import "uiimage+imageeffects.h"
#import "pop.h"
#import "mjextension.h"
#import "composemodel.h"

@interface publishview ()

/** 取消按钮 */
@property (nonatomic, weak) uibutton *cancelbutton;

@end

@implementation publishview

/** 全局 window_ */
static uiwindow *window_;

/** 显示发布view */
+ (void)show{
  // 添加一个独立的window是为了隔离点击事件
  window_ = [[uiwindow alloc]initwithframe:[uiscreen mainscreen].bounds];
  
  window_.hidden = no;
  
  publishview *publish = [[publishview alloc]init];
  
  publish.frame = window_.bounds;
  
  [window_ addsubview:publish];
}

- (instancetype)initwithframe:(cgrect)frame
{
  self = [super initwithframe:frame];
  if (self) {
    
    uiimageview *imageview = [[uiimageview alloc]initwithimage:[self geteffectimage]];
    [self addsubview:imageview];

    [self setupui];
  }
  return self;
}

- (void)setupui{
  
  //这里用自定义的 window 是为了隔绝点击事件 不让点击事件传到后面控制器的view上去
 
  // 按钮弹跳动画时让view本身不能点击
  self.userinteractionenabled = no;
  
  // 从plis文件获得一个模型数组
  nsarray *buttonmodelarray = [composemodel mj_objectarraywithfilename:@"buttonimage.plist"];
  
  cgfloat button_w = 72;
  cgfloat button_h = button_w + 30;
  nsinteger maxloc = 3; //最多列数
  
  //按钮弹跳动画停止后的起始 y 值
  cgfloat buttonend_y = ([[uiscreen mainscreen] bounds].size.height - button_h * 2) / 2;
  
  //最开始在屏幕外上方的的起始 y 值
  cgfloat buttonbegin_y = buttonend_y - [[uiscreen mainscreen] bounds].size.height;
  
  //按钮的起始间隙值
  cgfloat buttonstartmargin = 20;
  
  //中间的一个按钮相对于两边按钮的间隙
  cgfloat buttonmargin = ([[uiscreen mainscreen] bounds].size.width - buttonstartmargin * 2 - button_w * maxloc) / (maxloc - 1);
  
  for (nsinteger i = 0; i < buttonmodelarray.count; ++i) {
    
    // bsverticalbutton 自定义的垂直排布按钮
    bsverticalbutton *button = [[bsverticalbutton alloc]init];
    
    button.tag = i;
    
    [self addsubview:button];
    
    [button addtarget:self action:@selector(buttonclick:) forcontrolevents:uicontroleventtouchupinside];
    
    composemodel *composemodel = buttonmodelarray[i];
    
    [button setimage:[uiimage imagenamed:composemodel.image] forstate:uicontrolstatenormal];
    
    [button settitle:composemodel.text forstate:uicontrolstatenormal];
    
    [button settitlecolor:[uicolor blackcolor] forstate:uicontrolstatenormal];
    
    button.titlelabel.font = [uifont systemfontofsize:14];
    
    nsinteger loc = i % maxloc;  //例号
    nsinteger row = i / maxloc;  //行号
    
    cgfloat button_x = buttonstartmargin + loc * (button_w + buttonmargin);
    cgfloat buttonbginanimation_y = buttonbegin_y + (button_h * row); //弹跳前的 y 值
    cgfloat buttonendanimation_y = buttonend_y + (button_h * row); //弹跳后的 y 值
    
    //创建pop弹簧动画对象
    popspringanimation *animation = [popspringanimation animationwithpropertynamed:kpopviewframe];
    
    animation.begintime = cacurrentmediatime() + i * 0.1; //动画开始时间
    
    animation.springbounciness = 10; //弹簧增强 0-20
    
    animation.springspeed = 8; //弹簧速度 0-20
    
    animation.fromvalue = [nsvalue valuewithcgrect:cgrectmake(button_x, buttonbginanimation_y, button_w, button_h)];
    
    animation.tovalue = [nsvalue valuewithcgrect:cgrectmake(button_x, buttonendanimation_y, button_w, button_h)];
    
    //中间的按钮添加动画
    [button pop_addanimation:animation forkey:nil];
  }
  
  // 添加品牌logo
  uiimageview *topimageview = [[uiimageview alloc]initwithimage:[uiimage imagenamed:@"compose_slogan"]];
  topimageview.center = cgpointmake([[uiscreen mainscreen] bounds].size.width * 0.5, [[uiscreen mainscreen] bounds].size.height * 0.2 - [[uiscreen mainscreen] bounds].size.height);
  
  [self addsubview:topimageview];
  
  //  popbasicanimation  基本的动画
  //  popspringanimation  弹簧动画
  //  popdecayanimation  减速动画
  //  popcustomanimation  自定义动画
  
  //创建pop弹簧动画对象
  popspringanimation *animation = [popspringanimation animationwithpropertynamed:kpopviewcenter];
  
  animation.begintime = cacurrentmediatime() + buttonmodelarray.count * 0.001; //动画开始时间
  
  animation.springbounciness = 10; //弹簧增强 0-20
  
  animation.springspeed = 10; //弹簧速度 0-20
  
  cgfloat center_x = [[uiscreen mainscreen] bounds].size.width * 0.5;
  cgfloat endcenter_y = [[uiscreen mainscreen] bounds].size.height * 0.2;
  cgfloat begincenter_y = endcenter_y - [[uiscreen mainscreen] bounds].size.height;
  
  animation.fromvalue = [nsvalue valuewithcgpoint:cgpointmake(center_x, begincenter_y)];
  
  animation.tovalue = [nsvalue valuewithcgpoint:cgpointmake(center_x, endcenter_y)];
  
  animation.completionblock = ^(popanimation *anim, bool finished){
    nslog(@"-------这里可以写动画结束后所要执行的代码...");
    // view本身开启交互
    self.userinteractionenabled = yes;
  };
  
  //给顶部的图片添加动画
  [topimageview pop_addanimation:animation forkey:nil];
  // 底部取消按钮
  uibutton *cancelbutton = [uibutton buttonwithtype:uibuttontypesystem];
  [cancelbutton settitle:@"取 消" forstate:uicontrolstatenormal];
  cancelbutton.titlelabel.font = [uifont systemfontofsize:15];
  [cancelbutton settitlecolor:[uicolor blackcolor] forstate:uicontrolstatenormal];
  [cancelbutton setbackgroundcolor:[uicolor whitecolor]];
  [cancelbutton addtarget:self action:@selector(cancelbuttonclick:) forcontrolevents:uicontroleventtouchupinside];
  [self addsubview:cancelbutton];
  self.cancelbutton = cancelbutton;
}

- (void)cancelbuttonclick:(uibutton *)button{
  
  // 退出时执行动画 方法的参数block传空
  [self animationwithblock:nil];
}

- (void)layoutsubviews{

  [super layoutsubviews];

  // 取消按钮位置大小
  cgpoint center = self.cancelbutton.center;
  center.x = self.center.x;
  self.cancelbutton.center = center;
  cgrect frame = self.cancelbutton.frame;
  frame.origin.y = self.frame.size.height * 0.85;
  frame.size = cgsizemake(200, 35);
  self.cancelbutton.frame = frame;
}

- (void)buttonclick:(uibutton *)button{
  
  [self animationwithblock:^{
    switch (button.tag) {
      case 0:
        nslog(@"发视频");
        break;
      case 1:
        nslog(@"发图片");
        break;
      case 2:{
        
        nslog(@"发段子");
      }
        break;
      case 3:
        nslog(@"发声音");
        break;
      case 4:
        nslog(@"审贴子");
        break;
      case 5:
        nslog(@"离线下载");
        break;
        
      default:
        break;
    }
  }];
  
}

/** 退出时与点出了某个按钮时执行的弹跳动画后销毁 window_ 移除 这个蒙板 view ,如果block参数completionblock有值先销毁window_后再执行这个block里的代码块 */
- (void)animationwithblock:(void (^) ())completionblock{
  
  nslog(@"----%@\n",self.subviews);
  
  //退出的时候这里用自定义的 window 是为了隔绝点击事件 不让点击事件传到后面控制器的view上去
  // view本身不能点
  self.userinteractionenabled = no;

  // 选移除取消按钮
  [self.cancelbutton removefromsuperview];
  
  for (nsinteger i = 1; i < self.subviews.count; ++i) {
  
    uiview *view = self.subviews[i];
    
    //创建pop基本动画对象
    popbasicanimation *animation = [popbasicanimation animationwithpropertynamed:kpopviewcenter];
    //    popspringanimation *animation = [popspringanimation animationwithpropertynamed:kpopviewcenter];
    
    animation.begintime = cacurrentmediatime() + (i-1) * 0.1; //动画开始时间
    
    // 如果用这个基类 popbasicanimation 动画的执行节奏(一开始很慢, 后面很快)
    animation.timingfunction = [camediatimingfunction functionwithname:kcamediatimingfunctioneasein];
    
    cgpoint center = view.center; //取出中心点
    
    animation.tovalue = [nsvalue valuewithcgpoint:cgpointmake(center.x , center.y + [[uiscreen mainscreen] bounds].size.height)];
    
    if (i == self.subviews.count-1) { //说明是最后一个 view在做动画,就让执行结束的 block
      // 动画结束时调用的 block
      animation.completionblock = ^(popanimation *anim, bool finished){
      
        nslog(@"取消时 这里可以写动画结束后所要执行的代码...");
        
        [self removefromsuperview];
        
        window_ = nil; //销毁自定义的 window
    
        !completionblock ? : completionblock();
      };
    }
    //给顶部的图片添加动画
    [view pop_addanimation:animation forkey:nil];
  }
}

- (void)touchesbegan:(nsset<uitouch *> *)touches withevent:(uievent *)event{
  
  [self animationwithblock:nil];
}

// 获得一个磨纱蒙板 image 图片
- (uiimage *)geteffectimage{
  uiwindow *window = [uiapplication sharedapplication].keywindow; //获取当前 window
  uigraphicsbeginimagecontext(window.size); //开启window大小的图形上下文
  cgcontextref ref = uigraphicsgetcurrentcontext(); //开启图形上下文
  [window.layer renderincontext:ref]; //把window图层 渲染到图形上下文当中
  uiimage *image = uigraphicsgetimagefromcurrentimagecontext(); //获取图片
  uigraphicsendimagecontext(); //关闭图形上下文
  image = [image applylighteffect]; //调用 image 分类方法 使图片调成蒙板状态
  return image;
}

@end

项目中用到的垂直布局自定义按钮 bsverticalbutton

#import "bsverticalbutton.h"

@implementation bsverticalbutton

- (instancetype)initwithframe:(cgrect)frame
{
  self = [super initwithframe:frame];
  if (self) {
    [self setupui];
  }
  return self;
}

- (void)awakefromnib{

  [super awakefromnib];
  
  [self setupui];
}


- (void)setupui{

  self.titlelabel.textalignment = nstextalignmentcenter;

}

- (void)layoutsubviews{

  [super layoutsubviews];
  
  //按钮内部图片 frame
  cgrect imageviewframe = self.imageview.frame;
  imageviewframe.origin.x = 0;
  imageviewframe.origin.y = 0;
  imageviewframe.size.width = self.bounds.size.width;
  imageviewframe.size.height = self.bounds.size.width;
  self.imageview.frame = imageviewframe;
  
  //按钮内部label frame
  cgrect titlelabelframe = self.titlelabel.frame;
  titlelabelframe.origin.x = 0;
  titlelabelframe.origin.y = self.imageview.frame.size.height + 10;
  titlelabelframe.size.width = self.bounds.size.width;
  self.titlelabel.frame = titlelabelframe;
  
  //按钮自身大小
  cgrect buttonbounds = self.bounds;
  buttonbounds.size.width = self.imageview.frame.size.width;
  buttonbounds.size.height = self.imageview.bounds.size.height + self.titlelabel.bounds.size.height + 10;
  self.bounds = buttonbounds;
}
@end

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