Read albums in iOS, call system camera technology share

Technical Content: Read the album separately and adjust the camera to display the picture on the ImageView

Layout:

1. Create ImageView and button and associate a Pickerimage event for button

[OBJC]View Plaincopy

1. <div style="Text-align:left;" ><span style= "font-family: helvetica; -webkit-text-stroke-width: initial;" >    self.aimageview = [[ Uiimageview alloc]initwithframe:cgrectmake (6 0, 10 0, 20 0, 20 0)]; </span></div>    self.backgroundcolor = [uicolor redColor] ;   
3. self. Aimageview. userinteractionenabled = YES;
7. self. Abutton = [[UIButton Alloc]initwithframe:cgrectmake (98, 350, 12  5, 25)];
9. self. Abutton. backgroundcolor = [Uicolor bluecolor];
11. [self. Abutton addTarget: The self action:@selector (pickerimage:) forcontrolevents: (  UIControlEventTouchUpInside)];
13. [self. Abutton settitle:@ "Select Image" forstate: (UIControlStateNormal)];
17. [self. View addsubview:selfAbutton];
19. [self. View addsubview:selfaimageview];
21. [self. Abutton release];
23. [self. Aimageview release];
29. [self addtapgestureonimageview];

2. Add a tap action on ImageView because some scenes need to be changed directly by clicking on the image

[OBJC]View Plaincopy

1. -(void) addtapgestureonimageview{
2. UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]initwithtarget:self action:@  Selector (pickerimage:)];
3. [self. Aimageview Addgesturerecognizer:tap];
4. [Tap release];
5. }

3. Implement the method in the Pat action

[OBJC]View Plaincopy

2. -(void) Pickerimage: (UIButton *) button{
4. //Add Actionsheet control, Prompt for options box, bring up camera or take picture
6. ///First parameter: is the title of the behavior list is generally empty
8. ///second parameter: Follow the agent
10. ///Third parameter: Cancels the text displayed on this action button
12. ///Fourth parameter: destructive destructive, devastating self-understanding anyway, I wrote about taking pictures, doing the action.
14. ///Fifth parameter: Select a picture from the album
16. Uiactionsheet *actionsheet = [[Uiactionsheet alloc]initwithtitle: Nil delegate: Self Cancelbuttontitle:@ "Cancel" Destructivebuttontitle:@ "Take photo" Otherbuttontitles:@ "select Picture from album", Nil  Nil];
18. //Display the Actionsheet object in the current interface
20. [Actionsheet Showinview:self. view];
22. [Actionsheet release];
24. }

4. Implementing methods in the Action Proxy protocol

[OBJC]View Plaincopy

2. -(void) Actionsheet: (uiactionsheet *) Actionsheet clickedbuttonatindex: (nsinteger) buttonindex{
4. switch (buttonindex) {
6. Case 0:
8. //Call system camera, take photo
10. [self Pickerpicturefromcamera];
12. Break ;
14. case 1:
16. [self pickerpicturefromphotosalbum];
18. Default:
20. Break ;
22. }
24. }

4.1 Getting pictures from the camera

[OBJC]View Plaincopy

2. -(void) pickerpicturefromcamera{
6. //To determine if the front camera is available, if not available, use the rear camera. If the rear camera is not available, use the phone's picture library
8. //Determine if the front-facing camera is available
10. if ([Uiimagepickercontroller Iscameradeviceavailable:uiimagepickercontrollercameradevicefront]) {
12. NSLog (@ "front-facing camera");
16. self. imagepc = [[Uiimagepickercontroller alloc]init];
18. self. Imagepc. cameradevice = Uiimagepickercontrollercameradevicefront;
20. [self. IMAGEPC release];
22. //Determine if the rear-facing camera is available
24. }Else if ([Uiimagepickercontroller iscameradeviceavailable:uiimagepickercontrollercameradevicerear]) {
26. NSLog (@ "Rear-facing camera");
30. self. imagepc = [[Uiimagepickercontroller alloc]init];
32. self. Imagepc. cameradevice = uiimagepickercontrollercameradevicerear;
34. [self. IMAGEPC release];
36. //If neither of them is possible, take photos from the mobile album
38. }else{
40. Uialertview *alertview = [[Uialertview Alloc]initwithtitle:@ ' call camera failed ' message:@ ' Please select photos from your phone album '  delegate:self cancelbuttontitle:@ "OK" otherbuttontitles: nil, nil nil];
42. [Alertview show];
44. [Alertview release];
46. }
50. //Initialize Picture Controller object
52. Uiimagepickercontroller *imagepicker = [[Uiimagepickercontroller alloc]init];
54. //sourcetype Resource Styles
56. //Set Picture selector to select a picture's style
58. Imagepicker. sourcetype = uiimagepickercontrollersourcetypephotolibrary;
60. //Set whether the picture allows editing
62. Imagepicker. allowsediting = YES;
64. //Set Picture Selector proxy object for this view controller
66. Imagepicker. Delegate = self ;
68. //Push the camera out to modal
70. [self presentviewcontroller:imagepicker animated:YES completion: nil];
72. //Release
74. [Imagepicker release];
78. }

4.2 Getting pictures from your phone's picture library

[OBJC]View Plaincopy

2. -(void) pickerpicturefromphotosalbum{
4. //Initialize Picture Controller object
6. Uiimagepickercontroller *imagepicker = [[Uiimagepickercontroller alloc]init];
8. //sourcetype Resource Styles
10. //Set Picture selector to select a picture's style
12. Imagepicker. sourcetype = uiimagepickercontrollersourcetypephotolibrary;
14. //Set whether the picture allows editing
16. Imagepicker. allowsediting = YES;
18. //Set Picture Selector proxy object for this view controller
20. Imagepicker. Delegate = self ;
22. //The selector controller is introduced to the modal
24. [self presentviewcontroller:imagepicker animated:YES completion: nil];
26. //Release
28. [Imagepicker release];
30. }

5. How to save selected photos to the details page

[OBJC]View Plaincopy

2. -(void) Imagepickercontroller: (uiimagepickercontroller *) Picker Didfinishpickingmediawithinfo: ( nsdictionary *) info{
4. //Use a photo album as a dictionary to remove photos from
6. self. Aimageview. image = [info objectforkey:uiimagepickercontrollereditedimage];
8. //Frame the marquee back
10. [self dismissviewcontrolleranimated:YES completion: nil];
12. }

Read albums in iOS, call system camera technology share