IOS_36 Voice Word Synchronization

Eventually:

Model

  sentence.h//  36_ Voice word synchronization////  Created by Beyond on 14-9-12.//  Copyright (c) 2014 Com.beyond. All rights reserved.//  model, sentence #import <Foundation/Foundation.h> @interface sentence:nsobject//text @property ( nonatomic, copy) NSString *text;//in the audio file, the time of the recitation begins @property (nonatomic, assign) double startTime; @end

Controller

beyondcontroller.m//36_ Voice Word synchronization////Created by Beyond on 14-9-12.//Copyright (c) 2014 Com.beyond. All rights reserved.//#import "BeyondController.h" #import "Sentence.h" #import "SongTool.h" @interface Beyondcontroller ()//Sentence object array @property (Nonatomic, strong) Nsarray *sentencearr;//start playing on the clock, listen to the Music playback Progress @property ( Nonatomic, Strong) Cadisplaylink *link;//music player can get the current playback time "CurrentTime" @property (nonatomic, strong) Avaudioplayer * Sentenceplayer; @end @implementation beyondcontroller//lazy load, create clock when needed-(Cadisplaylink *) link{if (!_link) {//Bind timing    Clock method self.link = [Cadisplaylink displaylinkwithtarget:self selector: @selector (update)]; } return _link;} Lazy loading, when needed to create an array of sentence objects, from a dictionary array in plist, to an array of objects-(Nsarray *) sentencearr{if (!_sentencearr) {Self.sentencearr = [Sent    ence objectarraywithfilename:@ "Redstory.plist"]; } return _sentencearr;}    -(void) viewdidload{[Super Viewdidload]; The tool class plays music and remembers the created player object "playable CurrentTime" with member variables Self.sentenceplayer = [soNgtool playmusic:@ "one East MP3"];    Play background music [Songtool playmusic:@ "BACKGROUND.CAF"];    At the same time, turn on the clock [self.link addtorunloop:[nsrunloop mainrunloop] formode:nsdefaultrunloopmode]; Self.tableView.contentInset = Uiedgeinsetsmake (20, 0, 0, 0);} #pragma mark-clock method//Key ~ ~ ~ ~ ~ ~ Clock bound Method-(void) update{//Get the current playing position (first number of seconds, for example, 10th second) Double currenttime = Self.sentenceplaye    R.currenttime;    Traverse to find the corresponding sentence int count = Self.sentenceArr.count;                for (int i = 0; i<count; i++) {//1. Current words sentence *s = self.sentencearr[i];        2. Get the next sentence object int next = i + 1;        Sentence *nexts = nil;        Need to prevent cross-border if (Next < count) {nexts = Self.sentencearr[next]; }//3. Key judgment, if the current playback time is greater than the time corresponding to I, and less than i+1 corresponding time if (currenttime >= s.starttime && currenttime < NE            Xts.starttime) {//select and highlight the text of the corresponding line nsindexpath *path = [Nsindexpath indexpathforrow:i insection:0]; [Self.tableview SelectrowatindexPath:path Animated:yes Scrollposition:uitableviewscrollpositiontop];        Break }}} #pragma mark-tableview data source method//Total number of lines, that is, how many sentences-(Nsinteger) TableView: (UITableView *) TableView numberofrowsinsection: (NS Integer) section{return self.sentenceArr.count;} Unique text for each line-(UITableViewCell *) TableView: (UITableView *) TableView Cellforrowatindexpath: (Nsindexpath *) Indexpath    {//1. Create cell static NSString *cellid = @ "sentence";    UITableViewCell *cell = [TableView dequeuereusablecellwithidentifier:cellid]; if (cell = = nil) {cell = [[UITableViewCell alloc] Initwithstyle:uitableviewcellstylesubtitle Reuseidentifier:celli    D];    }//2. Set the cell's unique data sentence *s = Self.sentencearr[indexpath.row];        Cell.textLabel.text = S.text; return cell;} @end

Music Playback Tool Class

IOS_36 Voice Word Synchronization