1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
| import UIKit
class PostVC: UIViewController, UITextViewDelegate, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
// UI obj
@IBOutlet var textTxt: UITextView!
@IBOutlet var countLbl: UILabel!
@IBOutlet var selectBtn: UIButton!
@IBOutlet var pictureImg: UIImageView!
@IBOutlet var postBtn: UIButton!
// unique id of post
var uuid = String()
var imageSelected = false
// first func
override func viewDidLoad() {
super.viewDidLoad()
// round corners
textTxt.layer.cornerRadius = textTxt.bounds.width / 50
postBtn.layer.cornerRadius = postBtn.bounds.width / 200
selectBtn.layer.cornerRadius = selectBtn.bounds.width / 50
// colors
selectBtn.backgroundColor = colorDefault
selectBtn.tintColor = colorWhite
textTxt.backgroundColor = colorDefault
postBtn.backgroundColor = colorDefault
countLbl.textColor = colorGray
// disable auto scroll layout
self.automaticallyAdjustsScrollViewInsets = false
// disable button from the begining
postBtn.enabled = false
postBtn.alpha = 0.4
}
// entered some text in TextView
func textViewDidChange(textView: UITextView) {
// numb of characters in textView
let chars = textView.text.characters.count
// white spacing in text
let spacing = NSCharacterSet.whitespaceAndNewlineCharacterSet()
// calculate string's length and convert to String
countLbl.text = String(140 - chars)
// if number of chars more than 140
if chars > 140 {
countLbl.textColor = colorSmoothRed
postBtn.enabled = false
postBtn.alpha = 0.4
// if entered only spaces and new lines
} else if textView.text.stringByTrimmingCharactersInSet(spacing).isEmpty {
postBtn.enabled = false
postBtn.alpha = 0.4
// everything is correct
} else {
countLbl.textColor = colorGray
postBtn.enabled = true
postBtn.alpha = 1
}
}
// touched screen
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
// hide keyboard
self.view.endEditing(false)
}
// clicked select picture button
@IBAction func select_click(sender: AnyObject) {
// calling picker for selecting iamge
let picker = UIImagePickerController()
picker.delegate = self
picker.sourceType = .PhotoLibrary
picker.allowsEditing = true
self.presentViewController(picker, animated: true, completion: nil)
}
// selected image in picker view
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
pictureImg.image = info[UIImagePickerControllerEditedImage] as? UIImage
self.dismissViewControllerAnimated(true, completion: nil)
// cast as a true to save image file in server
if pictureImg.image == info[UIImagePickerControllerEditedImage] as? UIImage {
imageSelected = true
}
}
// custom body of HTTP request to upload image file
func createBodyWithParams(parameters: [String: String]?, filePathKey: String?, imageDataKey: NSData, boundary: String) -> NSData {
let body = NSMutableData();
if parameters != nil {
for (key, value) in parameters! {
body.appendString("--\(boundary)\r\n")
body.appendString("Content-Disposition: form-data; name="\(key)"\r\n\r\n")
body.appendString("\(value)\r\n")
}
}
// if file is not selected, it will not upload a file to server, because we did not declare a name file
var filename = ""
if imageSelected == true {
filename = "post-\(uuid).jpg"
}
let mimetype = "image/jpg"
body.appendString("--\(boundary)\r\n")
body.appendString("Content-Disposition: form-data; name="\(filePathKey!)"; filename="\(filename)"\r\n")
body.appendString("Content-Type: \(mimetype)\r\n\r\n")
body.appendData(imageDataKey)
body.appendString("\r\n")
body.appendString("--\(boundary)--\r\n")
return body
}
// function sending requset to PHP to uplaod a file
func uploadPost() {
// shortcuts to data to be passed to php file
let id = user!["id"] as! String
uuid = NSUUID().UUIDString
let text = textTxt.text.trunc(140) as String
// url path to php file
let url = NSURL(string: "http://xxxxx.ru/posts.php")!
let request = NSMutableURLRequest(URL: url)
request.HTTPMethod = "POST"
// param to be passed to php file
let param = [
"id" : id,
"uuid" : uuid,
"text" : text
]
// body
let boundary = "Boundary-\(NSUUID().UUIDString)"
request.setValue("multipart/form-data; boundary=\(boundary)", forHTTPHeaderField: "Content-Type")
// if picture is selected, compress it by half
var imageData = NSData()
if pictureImg.image != nil {
imageData = UIImageJPEGRepresentation(pictureImg.image!, 0.5)!
}
// ... body
request.HTTPBody = createBodyWithParams(param, filePathKey: "file", imageDataKey: imageData, boundary: boundary)
// launch session
NSURLSession.sharedSession().dataTaskWithRequest(request) { (data:NSData?, response:NSURLResponse?, error:NSError?) in
// get main queu to communicate back to user
dispatch_async(dispatch_get_main_queue(), {
if error == nil {
do {
// json containes $returnArray from php
let json = try NSJSONSerialization.JSONObjectWithData(data!, options: .MutableContainers) as? NSDictionary
// declare new var to store json inf
guard let parseJSON = json else {
print("Error while parsing")
return
}
// get message from $returnArray["message"]
let message = parseJSON["message"]
// if there is some message - post is made
if message != nil {
// reset UI
self.textTxt.text = ""
self.countLbl.text = "140"
self.pictureImg.image = nil // dont UIImage() ! is nil
self.postBtn.enabled = false
self.postBtn.alpha = 0.4
self.imageSelected = false
// switch to another scene 0 = index start from 0
self.tabBarController?.selectedIndex = 0
}
} catch {
dispatch_async(dispatch_get_main_queue(), {
let message = String(error)
appDelegete.infoView(message: message, color : colorSmoothRed)
})
return
}
} else {
//if unable to proceed request
dispatch_async(dispatch_get_main_queue(), {
let message = error!.localizedDescription
appDelegete.infoView(message: message, color : colorSmoothRed)
})
return
}
})
}.resume()
}
// clicked post button
@IBAction func post_click(sender: AnyObject) {
// if entered some text and text is less than 140 chars
if !textTxt.text.isEmpty && textTxt.text.characters.count <= 140 {
// call func to uplaod post
uploadPost()
}
}
}
// Extension to stirng type of variables
extension String {
// cut / trimm our string
func trunc(length: Int, trailing: String? = "...") -> String {
if self.characters.count > length {
return self.substringToIndex(self.startIndex.advancedBy(length)) + (trailing ?? "")
} else {
return self
}
}
} |
(
