iOS开发项目篇—33发微博

时间：2014-07-16 18:13:21 阅读：343 评论：0 收藏：0 [点我收藏+]

iOS开发项目篇—33发微博

一、简单说明

1.发送按钮

当textView的文字发生改变（有内容）的时候，设置导航栏右侧的按钮为可点击的。

说明：监听内容的改变，既可以使用通知来实现，也可以使用代理来实现（下面使用的是代理的方式）

代码说明：

1 #pragma mark-设置代理方法
2 /**
3  *当textView的内容改变的时候，通知导航栏“发送”按钮为可用
4  */
5 -(void)textViewDidChange:(UITextView *)textView
6 {
7     self.navigationItem.rightBarButtonItem.enabled=textView.text.length!=0;
8 }

2.发送微博的接口

查看新浪提供的发送微博的接口：

bubuko.com,布布扣

其中使用了第二个接口就必须要传递图片。

两个接口的参数说明：

（1）发布一条微博信息

bubuko.com,布布扣

（2）上传图片并发布一条微博

bubuko.com,布布扣

提示：参数说明中binary的数据类型对应的时NSData.

3.合理的选择对应的接口

 1 -(void)send
 2 {
 3     //1.发表微博
 4     if (self.photoView.images.count) {
 5         [self sendStatusWithImage];
 6     }else
 7     {
 8         [self sendStatusWithoutImage];
 9     }
10     //2.退出控制器
11     [self dismissViewControllerAnimated:YES completion:nil];
12 }

二、代码实现

说明：新浪开放的接口，只能上传一张图片

实现代码：

YYComposePhotosView.m文件中添加一个获取图片数组的方法

 1 //
 2 //  YYComposePhotosView.m
 3 //
 4 
 5 #import "YYComposePhotosView.h"
 6 
 7 @implementation YYComposePhotosView
 8 
 9 -(void)addImage:(UIImage *)image
10 {
11     UIImageView *imageView=[[UIImageView alloc]init];
12     //设置显示效果
13     imageView.contentMode=UIViewContentModeScaleToFill;
14     //裁剪超出的部分
15 //    imageView.clipsToBounds=YES;
16     imageView.image=image;
17     [self addSubview:imageView];
18 }
19 
20 -(void)layoutSubviews
21 {
22     [super layoutSubviews];
23     int count = self.subviews.count;
24     // 一行的最大列数
25     int maxColsPerRow = 4;
26     
27     // 每个图片之间的间距
28     CGFloat margin = 10;
29     
30     // 每个图片的宽高
31     CGFloat imageViewW = (self.width - (maxColsPerRow + 1) * margin) / maxColsPerRow;
32     CGFloat imageViewH = imageViewW;
33     
34     for (int i = 0; i<count; i++) {
35         // 行号
36         int row = i / maxColsPerRow;
37         // 列号
38         int col = i % maxColsPerRow;
39         
40         UIImageView *imageView = self.subviews[i];
41         imageView.width = imageViewW;
42         imageView.height = imageViewH;
43         imageView.y = row * (imageViewH + margin);
44         imageView.x = col * (imageViewW + margin) + margin;
45     }
46 }
47 
48 -(NSArray *)images
49 {
50     NSMutableArray *images=[NSMutableArray array];
51     for (UIImageView *imageView in self.subviews) {
52         [images addObject:imageView.image];
53     }
54     return images;
55 }
56 @end

YYComposeViewController.m文件进行业务处理

  1 //
  2 //  YYComposeViewController.m
  3 //
  4 
  5 #import "YYComposeViewController.h"
  6 #import "YYTextView.h"
  7 #import "YYComposeToolBar.h"
  8 #import "YYComposePhotosView.h"
  9 #import "YYAccountModel.h"
 10 #import "YYAccountTool.h"
 11 #import "AFNetworking.h"
 12 #import "MBProgressHUD+MJ.h"
 13 
 14 @interface YYComposeViewController ()<YYComposeToolBarDelegate,UITextViewDelegate,UINavigationControllerDelegate, UIImagePickerControllerDelegate>
 15 @property(nonatomic,weak)YYTextView *textView;
 16 @property(nonatomic,weak)YYComposeToolBar *toolBar;
 17 @property(nonatomic,weak)YYComposePhotosView *photoView;
 18 @end
 19 
 20 @implementation YYComposeViewController
 21 
 22 #pragma mark-初始化方法
 23 - (void)viewDidLoad
 24 {
 25     [super viewDidLoad];
 26   
 27     //设置导航栏
 28     [self setupNavBar];
 29     
 30     //添加子控件
 31     [self setupTextView];
 32     
 33     //添加工具条
 34     [self setupToolbar];
 35     
 36     //添加photoView
 37     [self setupPhotoView];
 38     
 39     //写图片代码,把五张图片写入到相册中保存
 40     for (int i=0; i<5; i++) {
 41         NSString *name=[NSString stringWithFormat:@"minion_0%d",i+1];
 42         UIImage *image=[UIImage imageNamed:name];
 43         UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil);
 44     }
 45     
 46 }
 47 
 48 -(void)setupPhotoView
 49 {
 50     YYComposePhotosView *photoView=[[YYComposePhotosView alloc]init];
 51     photoView.width=self.textView.width;
 52     photoView.height=self.textView.height;
 53     photoView.y=50;
 54 //    photoView.backgroundColor=[UIColor redColor];
 55     [self.textView addSubview:photoView];
 56     self.photoView=photoView;
 57 }
 58 -(void)setupToolbar
 59 {
 60     //1.创建
 61     YYComposeToolBar *toolBar=[[YYComposeToolBar alloc]init];
 62     toolBar.width=self.view.width;
 63     toolBar.height=44;
 64     self.toolBar=toolBar;
 65     //设置代理
 66     toolBar.delegate=self;
 67     
 68     //2.显示
 69 //    self.textView.inputAccessoryView=toolBar;
 70     toolBar.y=self.view.height-toolBar.height;
 71     [self.view addSubview:toolBar];
 72 }
 73 
 74 
 75 /**
 76  *  view显示完毕的时候再弹出键盘，避免显示控制器view的时候会卡住
 77  */
 78 - (void)viewDidAppear:(BOOL)animated
 79 {
 80     [super viewDidAppear:animated];
 81     
 82     // 成为第一响应者（叫出键盘）
 83     [self.textView becomeFirstResponder];
 84 }
 85 
 86 #pragma mark-UITextViewDelegate
 87 /**
 88  *  当用户开始拖拽scrollView时调用
 89  */
 90 -(void)scrollViewWillBeginDragging:(UIScrollView *)scrollView
 91 {
 92     [self.view endEditing:YES];
 93 }
 94 
 95 //添加子控件
 96 -(void)setupTextView
 97 {
 98     //1.创建输入控件
 99     YYTextView *textView=[[YYTextView alloc]init];
100     //设置垂直方向上拥有弹簧效果
101     textView.alwaysBounceVertical=YES;
102     textView.delegate=self;
103     //设置frame
104     textView.frame=self.view.bounds;
105     [self.view addSubview:textView];
106     self.textView=textView;
107     
108     //2.设置占位文字提醒
109     textView.placehoder=@"分享新鲜事···";
110     //3.设置字体(说明：该控件继承自UITextfeild，font是其父类继承下来的属性)
111     textView.font=[UIFont systemFontOfSize:15];
112     //设置占位文字的颜色为棕色
113     textView.placehoderColor=[UIColor lightGrayColor];
114     
115     //4.监听键盘
116     //键盘的frame(位置即将改变)，就会发出UIKeyboardWillChangeFrameNotification通知
117     //键盘即将弹出，就会发出UIKeyboardWillShowNotification通知
118     [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(KeyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];
119     //键盘即将隐藏，就会发出UIKeyboardWillHideNotification通知
120     [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(KeyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];
121 }
122 
123 -(void)dealloc
124 {
125     [[NSNotificationCenter defaultCenter]removeObserver:self];
126 }
127 
128 #pragma mark-设置代理方法
129 /**
130  *当textView的内容改变的时候，通知导航栏“发送”按钮为可用
131  */
132 -(void)textViewDidChange:(UITextView *)textView
133 {
134     self.navigationItem.rightBarButtonItem.enabled=textView.text.length!=0;
135 }
136 #pragma mark-键盘处理
137 /**
138  *键盘即将弹出
139  */
140 -(void)KeyboardWillShow:(NSNotification *)note
141 {
142     YYLog(@"%@",note.userInfo);
143     //1.键盘弹出需要的时间
144     CGFloat duration=[note.userInfo [UIKeyboardAnimationDurationUserInfoKey] doubleValue];
145     
146     //2.动画
147     [UIView animateWithDuration:duration animations:^{
148         //取出键盘的高度
149         CGRect keyboardF=[note.userInfo [UIKeyboardFrameEndUserInfoKey] CGRectValue];
150         CGFloat keyboardH=keyboardF.size.height;
151         self.toolBar.transform=CGAffineTransformMakeTranslation(0, -keyboardH);
152     }];
153 }
154 
155 /**
156  *键盘即将隐藏
157  */
158 -(void)KeyboardWillHide:(NSNotification *)note
159 {
160     //1.键盘弹出需要的时间
161     CGFloat duration=[note.userInfo [UIKeyboardAnimationDurationUserInfoKey] doubleValue];
162     //2.动画
163     [UIView animateWithDuration:duration animations:^{
164         self.toolBar.transform=CGAffineTransformIdentity;
165     }];
166 }
167 
168 //设置导航栏
169 -(void)setupNavBar
170 {
171     self.title=@"发消息";
172     self.view.backgroundColor=[UIColor whiteColor];
173     self.navigationItem.leftBarButtonItem=[[UIBarButtonItem alloc]initWithTitle:@"取消" style:UIBarButtonItemStyleBordered target:self action:@selector(cancel)];
174     self.navigationItem.rightBarButtonItem=[[UIBarButtonItem alloc]initWithTitle:@"发送" style:UIBarButtonItemStyleBordered target:self action:@selector(send)];
175     self.navigationItem.rightBarButtonItem.enabled=NO;
176 }
177 
178 -(void)send
179 {
180     //1.发表微博
181     if (self.photoView.images.count) {
182         [self sendStatusWithImage];
183     }else
184     {
185         [self sendStatusWithoutImage];
186     }
187     //2.退出控制器
188     [self dismissViewControllerAnimated:YES completion:nil];
189 }
190 
191 /**
192  *  发送带图片的微博
193  */
194 -(void)sendStatusWithImage
195 {
196     //1.获得请求管理者
197     AFHTTPRequestOperationManager *mgr = [AFHTTPRequestOperationManager manager];
198     
199     //2.封装请求参数
200     NSMutableDictionary *params=[NSMutableDictionary dictionary];
201     params[@"access_token"] =[YYAccountTool accountModel].access_token;
202     params[@"status"]=self.textView.text;
203     
204     //3.发送POST请求
205 //    [mgr POST:@"https://api.weibo.com/2/statuses/update.json" parameters:params success:^(AFHTTPRequestOperation *operation, NSDictionary*statusDict) {
206 //
207 //    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
208 //
209 //    }];
210     [mgr POST:@"https://upload.api.weibo.com/2/statuses/upload.json" parameters:params constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
211 #warning 目前新浪提供的发微博接口只能上传一张图片
212         //取出图片
213         UIImage *image=[self.photoView.images firstObject];
214         //把图片写成NSData
215         NSData *data=UIImageJPEGRepresentation(image, 1.0);
216         //拼接文件参数
217         [formData appendPartWithFileData:data name:@"pic" fileName:@"status.jpg" mimeType:@"image/jpeg"];
218         
219     } success:^(AFHTTPRequestOperation *operation, id responseObject) {
220         [MBProgressHUD showSuccess:@"发表成功"];
221     } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
222         [MBProgressHUD showError:@"发表失败"];
223     }];
224 }
225 
226 /**
227  *  发送不带图片的微博
228  */
229 -(void)sendStatusWithoutImage
230 {
231     
232     //1.获得请求管理者
233     AFHTTPRequestOperationManager *mgr = [AFHTTPRequestOperationManager manager];
234     
235     //2.封装请求参数
236     NSMutableDictionary *params=[NSMutableDictionary dictionary];
237     params[@"access_token"] =[YYAccountTool accountModel].access_token;
238     params[@"status"]=self.textView.text;
239     
240     //3.发送POST请求
241     [mgr POST:@"https://api.weibo.com/2/statuses/update.json" parameters:params success:^(AFHTTPRequestOperation *operation, NSDictionary*statusDict) {
242         [MBProgressHUD showSuccess:@"发表成功"];
243     } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
244         [MBProgressHUD showError:@"发表失败"];
245     }];
246     
247     //4.关闭发送微博界面
248 //    [self dismissViewControllerAnimated:YES completion:nil];
249 }
250 -(void)cancel
251 {
252     [self dismissViewControllerAnimated:YES completion:nil];
253 //    self.textView.text=@"测试";
254 }
255 
256 
257 #pragma mark-YYComposeToolBarDelegate
258 -(void)composeTool:(YYComposeToolBar *)toolbar didClickedButton:(YYComposeToolbarButtonType)buttonType
259 {
260     switch (buttonType) {
261         case YYComposeToolbarButtonTypeCamera://照相机
262             [self openCamera];
263             break;
264             
265         case YYComposeToolbarButtonTypePicture://相册
266             [self openAlbum];
267             break;
268             
269         case YYComposeToolbarButtonTypeEmotion://表情
270             [self openEmotion];
271             break;
272             
273         case YYComposeToolbarButtonTypeMention://提到
274             YYLog(@"提到");
275             break;
276             
277         case YYComposeToolbarButtonTypeTrend://话题
278             YYLog(@"打开话题");
279             break;
280             
281         default:
282             break;
283     }
284 }
285 
286 /**
287  *  打开照相机
288  */
289 -(void)openCamera
290 {
291     //如果不能用，则直接返回
292     if (![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) return;
293     
294     UIImagePickerController *ipc=[[UIImagePickerController alloc]init];
295     ipc.sourceType=UIImagePickerControllerSourceTypeCamera;
296     ipc.delegate=self;
297     [self presentViewController:ipc animated:YES completion:nil];
298     
299 }
300 /**
301  *  打开相册
302  */
303 -(void)openAlbum
304 {
305     //如果不能用，则直接返回
306     if (![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) return;
307     
308     UIImagePickerController *ipc=[[UIImagePickerController alloc]init];
309     ipc.sourceType=UIImagePickerControllerSourceTypePhotoLibrary;
310     ipc.delegate=self;
311     [self presentViewController:ipc animated:YES completion:nil];
312 }
313 /**
314  *  打开表情
315  */
316 -(void)openEmotion
317 {
318 
319 }
320 
321 #pragma mark-UIImagePickerControllerDelegate
322 -(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
323 {
324     [picker dismissViewControllerAnimated:YES completion:nil];
325     //1.取出选取的图片
326     UIImage *image=info[UIImagePickerControllerOriginalImage];
327     
328     //2.添加图片到相册中
329     [self.photoView addImage:image];
330 }
331 @end