最近有同學(xué)問到了關(guān)于微信語音連播的問題贮匕，在這里我將自己模仿微信語音連播的核心代碼部分開源出來，供大家參考刊头。仔細(xì)閱讀，按照代碼的思路就可以實(shí)現(xiàn)語音連播诸尽。
基本的思路就是：使用遞歸思想原杂。點(diǎn)擊語音消息，獲取cell弦讽，判斷（1）播放的消息是否正在播放污尉，（2）播放的消息是否是點(diǎn)擊的消息；然后進(jìn)行播放往产，更新語音動(dòng)畫UI被碗。播放完畢，需要在內(nèi)存中的messageArray中查找下一條消息仿村，通過消息找到cell锐朴，更新cell上的語音動(dòng)畫UI，播放該語音蔼囊，更新數(shù)據(jù)庫中的標(biāo)記焚志。然后繼續(xù)下一條消息的播放。
- (void)clickCellVoice:(VMessageEntity *)model
{
__weak VChatsViewController *weakSelf = self;
// cell 的點(diǎn)擊事件畏鼓，
if (model)
{
VChatVoiceBaseCell *voiceCell = nil;
// 在可視化的cell上面用messageId查找與model對應(yīng)的VChatVoiceBaseCell酱酬，
for (UITableViewCell *cell in [_tableView visibleCells]) {
if ([cell isKindOfClass:[VChatVoiceBaseCell class]]) {
VChatVoiceBaseCell *tempVoiceCell =(VChatVoiceBaseCell *)cell;
if ( tempVoiceCell.message.messageId == model.messageId) {
voiceCell = (VChatVoiceBaseCell *)cell;
break;
}
}
}
if (voiceCell)
{
//如果點(diǎn)擊的cell的語音文件沒有播放，則開始播放云矫，同時(shí)開啟語音播放動(dòng)畫膳沽。
if (![[VAudioPalyerManager sharedManager] isPlaying]) {
[voiceCell.playIcon startAnimating];
model.voiceMessage.isPlaying = YES;
[[VAudioPalyerManager sharedManager] playWithfile:model.voiceMessage.voicemd5
finishPlaying:^(NSString *fileName,BOOL isFinished) {
// 播放完成的回調(diào)，停止動(dòng)畫让禀，開始播放下一條
[voiceCell.playIcon stopAnimating];
model.voiceMessage.isPlaying = NO;
if (isFinished) {
if (model.messageStatus == VMessageStatusNone && model.readStatus == VMessageNoRead)
{
[weakSelf playNextUnReadVoiceWithMessageEntity:model];
}
}
}];
}else if([[VAudioPalyerManager sharedManager]isPlaying]
&&![model.voiceMessage.voicemd5 isEqualToString:[[VAudioPalyerManager sharedManager] currentFileName]])
//如果正在播放挑社，且與當(dāng)前的文件名不同，停止播放當(dāng)前的播放效果巡揍，播放另外一條痛阻。
{
[[VAudioPalyerManager sharedManager] stop];
[voiceCell.playIcon startAnimating];
model.voiceMessage.isPlaying = YES;
[[VAudioPalyerManager sharedManager] playWithfile:model.voiceMessage.voicemd5
finishPlaying:^(NSString *fileName, BOOL isFinish) {
[voiceCell.playIcon stopAnimating];
model.voiceMessage.isPlaying = NO;
if (isFinish) {
if (model.messageStatus == VMessageStatusNone && model.readStatus == VMessageNoRead)
{
[weakSelf playNextUnReadVoiceWithMessageEntity:model];
}
}
}];
}else if([[VAudioPalyerManager sharedManager]isPlaying]
&& [model.voiceMessage.voicemd5 isEqualToString:[[VAudioPalyerManager sharedManager] currentFileName]])
// 處理當(dāng)前正在播放的語音，停止當(dāng)前的語音播放
{
[[VAudioPalyerManager sharedManager] stop];
model.voiceMessage.isPlaying = NO;
if([voiceCell.playIcon isAnimating])
{
[voiceCell.playIcon stopAnimating];
}
}
}
}
}
//遞歸查找下一條未讀語音消息
- (void)playNextUnReadVoiceWithMessageEntity:(VMessageEntity *)model
{
//找到message在chatArray里面的位置
model.readStatus = VMessageHaveRead;
__weak VChatsViewController *weakSelf = self;
if (model) {
NSIndexPath *index = [NSIndexPath indexPathForRow:
[self.messageArray indexOfObject:model] inSection:0];
if (index)
{
for (NSInteger i = index.row+1; i < self.messageArray.count; i++) {
id tempObj = self.messageArray[i];
if ([tempObj isKindOfClass:[VMessageEntity class]])
{
VMessageEntity *messageEntity = (VMessageEntity *)tempObj;
if (messageEntity.messageType == VMessageTypeVoice && messageEntity.messageStatus == VMessageStatusNone)
{//判斷是語音消息
if (messageEntity.readStatus == VMessageNoRead)
{
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
//取到下一條的cell
VChatVoiceReceiveCell *voiceBaseCell = nil;
for (UITableView *cell in [_tableView visibleCells]) {
if ([cell isKindOfClass:[VChatVoiceReceiveCell class]]) {
VChatVoiceReceiveCell *tempBaseCell = (VChatVoiceReceiveCell *)cell;
if (tempBaseCell.message.messageId == messageEntity.messageId) {
voiceBaseCell = (VChatVoiceReceiveCell *)cell;//找到cell
}
}
}
//找到cell腮敌，更新UI
[voiceBaseCell.playIcon startAnimating];
//更新數(shù)據(jù)庫消息的未讀狀態(tài),去掉未讀標(biāo)記
[voiceBaseCell receiveVoiceCellBeClick];
//更新數(shù)據(jù)庫
[[VMessageManager sharedManager] updateReadStatusWithClientMessageId:
messageEntity.clientMessageId readStatus:VMessageHaveRead userId:messageEntity.sendUserId];
messageEntity.readStatus = VMessageHaveRead;
[weakSelf.messageArray replaceObjectAtIndex:i withObject:messageEntity];
//進(jìn)行播放
messageEntity.voiceMessage.isPlaying = YES;
[[VAudioPalyerManager sharedManager]
playWithfile:messageEntity.voiceMessage.voicemd5
finishPlaying:^(NSString *fileName, BOOL isFinish) {
[voiceBaseCell.playIcon stopAnimating];
messageEntity.voiceMessage.isPlaying = NO;
if (isFinish) {
if (model.messageStatus == VMessageStatusNone)
{
//isFinish == yes 則完整播放,再次調(diào)用這個(gè)方法
[weakSelf playNextUnReadVoiceWithMessageEntity:model];
}
}
}];
});
break;
}
}
}else{
NSLog(@"不是消息類型");
}
}
}
}
}
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