如何调整JSQMessages ViewController的大小。我想在主视图的顶部提到一个UiView，但是当我使用JSQMessagesViewController时，它覆盖了整个视图的大小，但是我需要调整JSQMessagesViewController的大小。
实际上，我是iOS目标c的新手，由另一位开发人员开发的代码让我脑震荡，我需要将一个视图放在高度为60的顶部
.H文件
#import "JSQMessages.h"
#import "ModelData.h"
#import "NSUserDefaults+DemoSettings.h"
@class ChatViewController;
@protocol JSQChatViewControllerDelegate <NSObject>
- (void)didDismissJSQDemoViewController:(ChatViewController *)vc;
@end
@interface ChatViewController : JSQMessagesViewController <UIActionSheetDelegate, JSQMessagesComposerTextViewPasteDelegate,UIImagePickerControllerDelegate, UINavigationControllerDelegate,UITableViewDataSource,UITableViewDelegate>
{
BOOL scrollToBottom;
JSQMessagesAvatarImage *jsqImage;
NSTimer *reFreshTimer;
}
@property (weak, nonatomic) id<JSQChatViewControllerDelegate> delegateModal;
@property (retain, nonatomic) ModelData *demoData;
@property (retain, nonatomic) NSDictionary * dict;
@property (retain, nonatomic) id conversationId;
- (void)closePressed:(UIBarButtonItem *)sender;
- (IBAction)titleBtnAction:(id)sender;
.M文件
- (void)viewDidLoad
{
if (![NSUserDefaults incomingAvatarSetting]) {
self.collectionView.collectionViewLayout.incomingAvatarViewSize = CGSizeZero;
}
if (![NSUserDefaults outgoingAvatarSetting]) {
self.collectionView.collectionViewLayout.outgoingAvatarViewSize = self.collectionView.collectionViewLayout.outgoingAvatarViewSize;
}
[JSQMessagesCollectionViewCell registerMenuAction:@selector(customAction:)];
[UIMenuController sharedMenuController].menuItems = @[ [[UIMenuItem alloc] initWithTitle:@"Custom Action"
action:@selector(customAction:)] ];
[JSQMessagesCollectionViewCell registerMenuAction:@selector(delete:)];
reFreshTimer= [NSTimer scheduledTimerWithTimeInterval:10.0
target:self
selector:@selector(getChats)
userInfo:nil
repeats:YES];
}
- (void)viewWillAppear:(BOOL)animated
{
}
}
-(void)viewWillDisappear:(BOOL)animated{
[super viewWillDisappear:animated];
[reFreshTimer invalidate];
[NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(getChats) object: nil];
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
/**
* Enable/disable springy bubbles, default is NO.
* You must set this from `viewDidAppear:`
* Note: this feature is mostly stable, but still experimental
*/
self.collectionView.collectionViewLayout.springinessEnabled = [NSUserDefaults springinessSetting];
}
- (void)receiveMessagePressed:(UIBarButtonItem *)sender
{
self.showTypingIndicator = !self.showTypingIndicator;
/**
* Scroll to actually view the indicator
*/
[self scrollToBottomAnimated:YES];
/**
* Copy last sent message, this will be the new "received" message
*/
JSQMessage *copyMessage = [[self.demoData.messages lastObject] copy];
if (!copyMessage) {
copyMessage = [JSQMessage messageWithSenderId:kJSQDemoAvatarIdJobs
displayName:kJSQDemoAvatarDisplayNameJobs
text:@"First received!"];
}
/**
* Allow typing indicator to show
*/
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
NSMutableArray *userIds = [[self.demoData.users allKeys] mutableCopy];
[userIds removeObject:self.senderId];
NSString *randomUserId = userIds[arc4random_uniform((int)[userIds count])];
JSQMessage *newMessage = nil;
id<JSQMessageMediaData> newMediaData = nil;
id newMediaAttachmentCopy = nil;
if (copyMessage.isMediaMessage) {
/**
* Last message was a media message
*/
id<JSQMessageMediaData> copyMediaData = copyMessage.media;
if ([copyMediaData isKindOfClass:[JSQPhotoMediaItem class]]) {
JSQPhotoMediaItem *photoItemCopy = [((JSQPhotoMediaItem *)copyMediaData) copy];
photoItemCopy.appliesMediaViewMaskAsOutgoing = NO;
newMediaAttachmentCopy = [UIImage imageWithCGImage:photoItemCopy.image.CGImage];
/**
* Set image to nil to simulate "downloading" the image
* and show the placeholder view
*/
photoItemCopy.image = nil;
newMediaData = photoItemCopy;
}
else if ([copyMediaData isKindOfClass:[JSQLocationMediaItem class]]) {
JSQLocationMediaItem *locationItemCopy = [((JSQLocationMediaItem *)copyMediaData) copy];
locationItemCopy.appliesMediaViewMaskAsOutgoing = NO;
newMediaAttachmentCopy = [locationItemCopy.location copy];
/**
* Set location to nil to simulate "downloading" the location data
*/
locationItemCopy.location = nil;
newMediaData = locationItemCopy;
}
else if ([copyMediaData isKindOfClass:[JSQVideoMediaItem class]]) {
JSQVideoMediaItem *videoItemCopy = [((JSQVideoMediaItem *)copyMediaData) copy];
videoItemCopy.appliesMediaViewMaskAsOutgoing = NO;
newMediaAttachmentCopy = [videoItemCopy.fileURL copy];
/**
* Reset video item to simulate "downloading" the video
*/
videoItemCopy.fileURL = nil;
videoItemCopy.isReadyToPlay = NO;
newMediaData = videoItemCopy;
}
else {
NSLog(@"%s error: unrecognized media item", __PRETTY_FUNCTION__);
}
newMessage = [JSQMessage messageWithSenderId:randomUserId
displayName:self.demoData.users[randomUserId]
media:newMediaData];
}
else {
/**
* Last message was a text message
*/
newMessage = [JSQMessage messageWithSenderId:randomUserId
displayName:self.demoData.users[randomUserId]
text:copyMessage.text];
}
/**
* Upon receiving a message, you should:
*
* 1. Play sound (optional)
* 2. Add new id<JSQMessageData> object to your data source
* 3. Call `finishReceivingMessage`
*/
[JSQSystemSoundPlayer jsq_playMessageReceivedSound];
[self.demoData.messages addObject:newMessage];
[self finishReceivingMessageAnimated:YES];
if (newMessage.isMediaMessage) {
/**
* Simulate "downloading" media
*/
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
/**
* Media is "finished downloading", re-display visible cells
*
* If media cell is not visible, the next time it is dequeued the view controller will display its new attachment data
*
* Reload the specific item, or simply call `reloadData`
*/
if ([newMediaData isKindOfClass:[JSQPhotoMediaItem class]]) {
((JSQPhotoMediaItem *)newMediaData).image = newMediaAttachmentCopy;
[self.collectionView reloadData];
}
else if ([newMediaData isKindOfClass:[JSQLocationMediaItem class]]) {
[((JSQLocationMediaItem *)newMediaData)setLocation:newMediaAttachmentCopy withCompletionHandler:^{
[self.collectionView reloadData];
}];
}
else if ([newMediaData isKindOfClass:[JSQVideoMediaItem class]]) {
((JSQVideoMediaItem *)newMediaData).fileURL = newMediaAttachmentCopy;
((JSQVideoMediaItem *)newMediaData).isReadyToPlay = YES;
[self.collectionView reloadData];
}
else {
NSLog(@"%s error: unrecognized media item", __PRETTY_FUNCTION__);
}
});
}
});
}
- (void)closePressed:(UIBarButtonItem *)sender
{
[self.delegateModal didDismissJSQDemoViewController:self];
}
#pragma mark - JSQMessages CollectionView DataSource
- (id<JSQMessageData>)collectionView:(JSQMessagesCollectionView *)collectionView messageDataForItemAtIndexPath:(NSIndexPath *)indexPath
{
//NSLog(@"counst of responsed Data %ld,%ld",self.demoData.messages.count-1,indexPath.item);
if (self.demoData.messages.count-1 >= indexPath.item) {
return [self.demoData.messages objectAtIndex:indexPath.item];
}else{
JSQMessage *message = [[JSQMessage alloc] initWithSenderId:@""
senderDisplayName:@""
date:[NSDate date]
text:@""];
return message;
}
}
- (void)collectionView:(JSQMessagesCollectionView *)collectionView didDeleteMessageAtIndexPath:(NSIndexPath *)indexPath
{
[self.demoData.messages removeObjectAtIndex:indexPath.item];
}
- (id<JSQMessageBubbleImageDataSource>)collectionView:(JSQMessagesCollectionView *)collectionView messageBubbleImageDataForItemAtIndexPath:(NSIndexPath *)indexPath
{
/**
* You may return nil here if you do not want bubbles.
* In this case, you should set the background color of your collection view cell's textView.
*
* Otherwise, return your previously created bubble image data objects.
*/
// if (self.demoData.messages.count-1 >= indexPath.item) {
JSQMessage *message = [self.demoData.messages objectAtIndex:indexPath.item];
if ([message.senderId isEqualToString:self.senderId]) {
return self.demoData.outgoingBubbleImageData;
}
return self.demoData.incomingBubbleImageData;
//}else{
//JSQMessage *message = [[JSQMessage alloc] initWithSenderId:@"" senderDisplayName:@"" date:[NSDate date] text:@""];
// return nil;
//}
}
- (id<JSQMessageAvatarImageDataSource>)collectionView:(JSQMessagesCollectionView *)collectionView avatarImageDataForItemAtIndexPath:(NSIndexPath *)indexPath
{
/**
* Return `nil` here if you do not want avatars.
* If you do return `nil`, be sure to do the following in `viewDidLoad`:
*
* self.collectionView.collectionViewLayout.incomingAvatarViewSize = CGSizeZero;
* self.collectionView.collectionViewLayout.outgoingAvatarViewSize = CGSizeZero;
*
* It is possible to have only outgoing avatars or only incoming avatars, too.
*/
/**
* Return your previously created avatar image data objects.
*
* Note: these the avatars will be sized according to these values:
*
* self.collectionView.collectionViewLayout.incomingAvatarViewSize
* self.collectionView.collectionViewLayout.outgoingAvatarViewSize
*
* Override the defaults in `viewDidLoad`
*/
//if (self.demoData.messages.count-1 >= indexPath.item) {
JSQMessage *message = [self.demoData.messages objectAtIndex:indexPath.item];
if ([message.senderId isEqualToString:self.senderId]) {
if (![NSUserDefaults outgoingAvatarSetting]) {
// jsqImage = [JSQMessagesAvatarImageFactory avatarImageWithImage:[UIImage imageNamed:@"single_tick"] diameter:10];
// dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
// jsqImage.avatarImage = [UIImage imageNamed:@"double_tick"];
// });
return nil;
}
}
else {
if (![NSUserDefaults incomingAvatarSetting]) {
return nil;
}
}
return [self.demoData.avatars objectForKey:message.senderId];
//}else return nil;
}
- (NSAttributedString *)collectionView:(JSQMessagesCollectionView *)collectionView attributedTextForCellTopLabelAtIndexPath:(NSIndexPath *)indexPath
{
/**
* This logic should be consistent with what you return from `heightForCellTopLabelAtIndexPath:`
* The other label text delegate methods should follow a similar pattern.
*
* Show a timestamp for every 3rd message
*/
//if (self.demoData.messages.count-1 >= indexPath.item) {
if (indexPath.item % 3 == 0) {
JSQMessage *message = [self.demoData.messages objectAtIndex:indexPath.item];
return [[JSQMessagesTimestampFormatter sharedFormatter] attributedTimestampForDate:message.date];
}
return nil;
// }else
// return nil;
}
- (NSAttributedString *)collectionView:(JSQMessagesCollectionView *)collectionView attributedTextForMessageBubbleTopLabelAtIndexPath:(NSIndexPath *)indexPath
{
//if (self.demoData.messages.count-1 >= indexPath.item) {
JSQMessage *message = [self.demoData.messages objectAtIndex:indexPath.item];
/**
* iOS7-style sender name labels
*/
if ([message.senderId isEqualToString:self.senderId]) {
return nil;
}
if (indexPath.item - 1 > 0) {
JSQMessage *previousMessage = [self.demoData.messages objectAtIndex:indexPath.item - 1];
if ([[previousMessage senderId] isEqualToString:message.senderId]) {
return nil;
}
}
/**
* Don't specify attributes to use the defaults.
*/
return [[NSAttributedString alloc] initWithString:message.senderDisplayName];
// }
// else return [[NSAttributedString alloc] initWithString:[NSString stringWithFormat:@"%@",@""]];
}
- (NSAttributedString *)collectionView:(JSQMessagesCollectionView *)collectionView attributedTextForCellBottomLabelAtIndexPath:(NSIndexPath *)indexPath
{
return nil;
}
#pragma mark - UICollectionView DataSource
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
return [self.demoData.messages count];
}
- (UICollectionViewCell *)collectionView:(JSQMessagesCollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
/**
* Override point for customizing cells
*/
JSQMessagesCollectionViewCell *cell = (JSQMessagesCollectionViewCell *)[super collectionView:collectionView cellForItemAtIndexPath:indexPath];
/**
* Configure almost *anything* on the cell
*
* Text colors, label text, label colors, etc.
*
*
* DO NOT set `cell.textView.font` !
* Instead, you need to set `self.collectionView.collectionViewLayout.messageBubbleFont` to the font you want in `viewDidLoad`
*
*
* DO NOT manipulate cell layout information!
* Instead, override the properties you want on `self.collectionView.collectionViewLayout` from `viewDidLoad`
*/
// if (self.demoData.messages.count-1 >= indexPath.item) {
JSQMessage *msg = [self.demoData.messages objectAtIndex:indexPath.item];
if (!msg.isMediaMessage) {
if ([msg.senderId isEqualToString:self.senderId]) {
cell.textView.textColor = [UIColor blackColor];
}
else {
cell.textView.textColor = [UIColor whiteColor];
}
cell.textView.linkTextAttributes = @{ NSForegroundColorAttributeName : cell.textView.textColor,
NSUnderlineStyleAttributeName : @(NSUnderlineStyleSingle | NSUnderlinePatternSolid) };
}
UIButton *button = [[UIButton alloc]initWithFrame:cell.bounds];
[button setTag:indexPath.row];
[button addTarget:self action:@selector(tappedOnMessage:) forControlEvents:UIControlEventTouchUpInside];
[button setBackgroundColor:[UIColor clearColor]];
//[button setTitle:@"testing" forState:UIControlStateNormal];
[cell.contentView addSubview:button];
[cell.contentView bringSubviewToFront:button];
return cell;
// }else {
// JSQMessage *msg = [[JSQMessage alloc] initWithSenderId:@""
// senderDisplayName:@""
// date:[NSDate date]
// text:@""];
//
// if (!msg.isMediaMessage) {
//
// if ([msg.senderId isEqualToString:self.senderId]) {
// cell.textView.textColor = [UIColor blackColor];
// }
// else {
// cell.textView.textColor = [UIColor whiteColor];
// }
//
// cell.textView.linkTextAttributes = @{ NSForegroundColorAttributeName : cell.textView.textColor,
// NSUnderlineStyleAttributeName : @(NSUnderlineStyleSingle | NSUnderlinePatternSolid) };
// }
//
// return cell;
//
// }
}