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iOS開辟之微信聊天對象欄的封裝

編輯:IOS開發綜合

微信年夜家根本上都用過,明天要做的就是微信的聊天對象條。聊天對象條照樣比擬龐雜的,個中包含發送臉色,發送文字,發送圖片,發送聲響,攝影等等功效,上面給動身送灌音,文字,臉色的代碼,其他的和這幾樣相似。照樣那句話百字不如一圖,先來幾張後果圖吧。

在封裝聊天對象條的的時刻臉色鍵盤是之前封裝好的,所以拿過去便可以用的啦。由於不論是對象條照樣臉色鍵盤都是用束縛來控件年夜小的,所以橫屏也是沒成績的,在年夜屏手機上也是沒成績的。上面將會一步步講授若何封裝上面的聊天對象條。重要是對對象條的封裝,臉色鍵盤在這就不做講授了。
1、ToolView預留的接口
在封裝ToolView中重要用到Block回調,讀者可以依據本身的小我習氣來選擇是Block回調,照樣拜托回調或許是目的舉措回調(筆者更愛好Block回調),上面的代碼是ToolView給挪用者供給的接口

//
// ToolView.h
// MecroMessage
//
// Created by (青玉伏案)on 14-9-22.
// Copyright (c) 2014年 Mrli. All rights reserved.
//

#import <UIKit/UIKit.h>


//界說block類型把ToolView中TextView中的文字傳入到Controller中
typedef void (^MyTextBlock) (NSString *myText);

//灌音時的音量
typedef void (^AudioVolumeBlock) (CGFloat volume);

//灌音存儲地址
typedef void (^AudioURLBlock) (NSURL *audioURL);

//轉變依據文字轉變TextView的高度
typedef void (^ContentSizeBlock)(CGSize contentSize);

//灌音撤消的回調
typedef void (^CancelRecordBlock)(int flag);


@interface ToolView : UIView<UITextViewDelegate,AVAudioRecorderDelegate>


//設置MyTextBlock
-(void) setMyTextBlock:(MyTextBlock)block;

//設置聲響回調
-(void) setAudioVolumeBlock:(AudioVolumeBlock) block;

//設置灌音地址回調
-(void) setAudioURLBlock:(AudioURLBlock) block;

-(void)setContentSizeBlock:(ContentSizeBlock) block;

-(void)setCancelRecordBlock:(CancelRecordBlock)block;

-(void) changeFunctionHeight: (float) height;

@end


2、初始化ToolView中所需的控件
1.為了更好的封裝我們的組件,在.h中預留接口,在ToolView.m的延展中添加我們要應用的組件(公有屬性),延展代碼以下:

@interface ToolView()
//最右邊發送語音的按鈕
@property (nonatomic, strong) UIButton *voiceChangeButton;

//發送語音的按鈕
@property (nonatomic, strong) UIButton *sendVoiceButton;

//文本視圖
@property (nonatomic, strong) UITextView *sendTextView;

//切換鍵盤
@property (nonatomic, strong) UIButton *changeKeyBoardButton;

//More
@property (nonatomic, strong) UIButton *moreButton;

//鍵盤坐標系的轉換
@property (nonatomic, assign) CGRect endKeyBoardFrame;


//臉色鍵盤
@property (nonatomic, strong) FunctionView *functionView;

//more
@property (nonatomic, strong) MoreView *moreView;

//數據model
@property (strong, nonatomic) ImageModelClass *imageMode;

@property (strong, nonatomic)HistoryImage *tempImage;


//傳輸文字的block回調
@property (strong, nonatomic) MyTextBlock textBlock;

//contentsinz
@property (strong, nonatomic) ContentSizeBlock sizeBlock;

//傳輸volome的block回調
@property (strong, nonatomic) AudioVolumeBlock volumeBlock;

//傳輸灌音地址
@property (strong, nonatomic) AudioURLBlock urlBlock;

//灌音撤消
@property (strong, nonatomic) CancelRecordBlock cancelBlock;


//添加灌音功效的屬性
@property (strong, nonatomic) AVAudioRecorder *audioRecorder;

@property (strong, nonatomic) NSTimer *timer;
@property (strong, nonatomic) NSURL *audioPlayURL;

@end

2.接收響應的Block回調,把block傳入ToolView中,代碼以下:  

-(void)setMyTextBlock:(MyTextBlock)block
{
 self.textBlock = block;
}

-(void)setAudioVolumeBlock:(AudioVolumeBlock)block
{
 self.volumeBlock = block;
}

-(void)setAudioURLBlock:(AudioURLBlock)block
{
 self.urlBlock = block;
}

-(void)setContentSizeBlock:(ContentSizeBlock)block
{
 self.sizeBlock = block;
}

-(void)setCancelRecordBlock:(CancelRecordBlock)block
{
 self.cancelBlock = block;
}

3.控件的初始化,純代碼添加ToolView中要用到的組件(分派內存,設置裝備擺設響應的屬性),由於是自界說組件的封裝,所以我們的storyboard就用不上啦,添加控件的代碼以下:

//控件的初始化
-(void) addSubview
{
 self.voiceChangeButton = [[UIButton alloc] initWithFrame:CGRectZero];
 [self.voiceChangeButton setImage:[UIImage imageNamed:@"chat_bottom_voice_press.png"] forState:UIControlStateNormal];
 [self.voiceChangeButton addTarget:self action:@selector(tapVoiceChangeButton:) forControlEvents:UIControlEventTouchUpInside];
 [self addSubview:self.voiceChangeButton];
 
 self.sendVoiceButton = [[UIButton alloc] initWithFrame:CGRectZero];
 [self.sendVoiceButton setBackgroundImage:[UIImage imageNamed:@"chat_bottom_textfield.png"] forState:UIControlStateNormal];
 [self.sendVoiceButton setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
 [self.sendVoiceButton setTitle:@"按住措辭" forState:UIControlStateNormal];
 
 
 [self.sendVoiceButton addTarget:self action:@selector(tapSendVoiceButton:) forControlEvents:UIControlEventTouchUpInside];
 self.sendVoiceButton.hidden = YES;
 [self addSubview:self.sendVoiceButton];
 
 self.sendTextView = [[UITextView alloc] initWithFrame:CGRectZero];
 self.sendTextView.delegate = self;
 [self addSubview:self.sendTextView];
 
 self.changeKeyBoardButton = [[UIButton alloc] initWithFrame:CGRectZero];
 [self.changeKeyBoardButton setImage:[UIImage imageNamed:@"chat_bottom_smile_nor.png"] forState:UIControlStateNormal];
 [self.changeKeyBoardButton addTarget:self action:@selector(tapChangeKeyBoardButton:) forControlEvents:UIControlEventTouchUpInside];
 [self addSubview:self.changeKeyBoardButton];
 
 self.moreButton = [[UIButton alloc] initWithFrame:CGRectZero];
 [self.moreButton setImage:[UIImage imageNamed:@"chat_bottom_up_nor.png"] forState:UIControlStateNormal];
 [self.moreButton addTarget:self action:@selector(tapMoreButton:) forControlEvents:UIControlEventTouchUpInside];
 [self addSubview:self.moreButton];
 
 [self addDone];
 
 
 
 //實例化FunctionView
 self.functionView = [[FunctionView alloc] initWithFrame:CGRectMake(0, 0, 320, 216)];
 self.functionView.backgroundColor = [UIColor blackColor];
 
 //設置資本加載的文件名
 self.functionView.plistFileName = @"emoticons";
 
 __weak __block ToolView *copy_self = self;
 //獲得圖片並顯示
 [self.functionView setFunctionBlock:^(UIImage *image, NSString *imageText)
  {
   NSString *str = [NSString stringWithFormat:@"%@%@",copy_self.sendTextView.text, imageText];
   
   copy_self.sendTextView.text = str;
   
   //把應用過的圖片存入SQLite
   NSData *imageData = UIImagePNGRepresentation(image);
   [copy_self.imageMode save:imageData ImageText:imageText];
  }];
 
 
 //給sendTextView添加輕擊手勢
 UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithtarget:self action:@selector(tapGesture:)];
 [self.sendTextView addGestureRecognizer:tapGesture];
 
 
 //給sendVoiceButton添加長按手勢
 UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithtarget:self action:@selector(sendVoiceButtonLongPress:)];
 //設置長按時光
 longPress.minimumPressDuration = 0.2;
 [self.sendVoiceButton addGestureRecognizer:longPress];
 
 //實例化MoreView
 self.moreView = [[MoreView alloc] initWithFrame:CGRectMake(0, 0, 0, 0)];
 self.moreView.backgroundColor = [UIColor blackColor];
 [self.moreView setMoreBlock:^(NSInteger index) {
  NSLog(@"MoreIndex = %d",(int)index);
 }];

 
}

4.給我們的控件添加響應的束縛,為了合適分歧的屏幕,所以主動結構是少不了的。固然啦給控件添加束縛也必需是手寫代碼啦,添加束縛的代碼以下:

//給控件加束縛
-(void)addConstraint
{
 //給voicebutton添加束縛
 self.voiceChangeButton.translatesAutoresizingMaskIntoConstraints = NO;
 
 NSArray *voiceConstraintH = [NSLayoutConstraint constraintsWithVisualFormat:@"H:|-5-[_voiceChangeButton(30)]" options:0 metrics:0 views:NSDictionaryOfVariableBindings(_voiceChangeButton)];
 [self addConstraints:voiceConstraintH];
 
 NSArray *voiceConstraintV = [NSLayoutConstraint constraintsWithVisualFormat:@"V:|-8-[_voiceChangeButton(30)]" options:0 metrics:0 views:NSDictionaryOfVariableBindings(_voiceChangeButton)];
 [self addConstraints:voiceConstraintV];
 
 
 
 //給MoreButton添加束縛
 self.moreButton.translatesAutoresizingMaskIntoConstraints = NO;
 
 NSArray *moreButtonH = [NSLayoutConstraint constraintsWithVisualFormat:@"H:[_moreButton(30)]-5-|" options:0 metrics:0 views:NSDictionaryOfVariableBindings(_moreButton)];
 [self addConstraints:moreButtonH];
 
 NSArray *moreButtonV = [NSLayoutConstraint constraintsWithVisualFormat:@"V:|-8-[_moreButton(30)]" options:0 metrics:0 views:NSDictionaryOfVariableBindings(_moreButton)];
 [self addConstraints:moreButtonV];
 
 
 //給changeKeyBoardButton添加束縛
 self.changeKeyBoardButton.translatesAutoresizingMaskIntoConstraints = NO;
 
 NSArray *changeKeyBoardButtonH = [NSLayoutConstraint constraintsWithVisualFormat:@"H:[_changeKeyBoardButton(33)]-43-|" options:0 metrics:0 views:NSDictionaryOfVariableBindings(_changeKeyBoardButton)];
 [self addConstraints:changeKeyBoardButtonH];
 
 NSArray *changeKeyBoardButtonV = [NSLayoutConstraint constraintsWithVisualFormat:@"V:|-5-[_changeKeyBoardButton(33)]" options:0 metrics:0 views:NSDictionaryOfVariableBindings(_changeKeyBoardButton)];
 [self addConstraints:changeKeyBoardButtonV];
 
 
 //給文本框添加束縛
 self.sendTextView.translatesAutoresizingMaskIntoConstraints = NO;
 NSArray *sendTextViewConstraintH = [NSLayoutConstraint constraintsWithVisualFormat:@"H:|-45-[_sendTextView]-80-|" options:0 metrics:0 views:NSDictionaryOfVariableBindings(_sendTextView)];
 [self addConstraints:sendTextViewConstraintH];
 
 NSArray *sendTextViewConstraintV = [NSLayoutConstraint constraintsWithVisualFormat:@"V:|-10-[_sendTextView]-10-|" options:0 metrics:0 views:NSDictionaryOfVariableBindings(_sendTextView)];
 [self addConstraints:sendTextViewConstraintV];
 
 
 //語音發送按鈕
 self.sendVoiceButton.translatesAutoresizingMaskIntoConstraints = NO;
 NSArray *sendVoiceButtonConstraintH = [NSLayoutConstraint constraintsWithVisualFormat:@"H:|-50-[_sendVoiceButton]-90-|" options:0 metrics:0 views:NSDictionaryOfVariableBindings(_sendVoiceButton)];
 [self addConstraints:sendVoiceButtonConstraintH];
 
 NSArray *sendVoiceButtonConstraintV = [NSLayoutConstraint constraintsWithVisualFormat:@"V:|-6-[_sendVoiceButton]-6-|" options:0 metrics:0 views:NSDictionaryOfVariableBindings(_sendVoiceButton)];
 [self addConstraints:sendVoiceButtonConstraintV];
 
 
}

5.由於我們要發送灌音,所以對音頻部門的初始化是少不了的,以下代碼是對音頻的初始化

//灌音部門初始化
-(void)audioInit
{
 NSError * err = nil;
 
 AVAudIOSession *audIOSession = [AVAudIOSession sharedInstance];
 [audioSession setCategory :AVAudioSessionCategoryPlayAndRecord error:&err];
 
 if(err){
  NSLog(@"audioSession: %@ %d %@", [err domain], [err code], [[err userInfo] description]);
  return;
 }
 
 [audioSession setActive:YES error:&err];
 
 err = nil;
 if(err){
  NSLog(@"audioSession: %@ %d %@", [err domain], [err code], [[err userInfo] description]);
  return;
 }

 //經由過程可變字典停止設置裝備擺設項的加載
 NSMutableDictionary *setAudioDic = [[NSMutableDictionary alloc] init];
 
 //設置灌音格局(aac格局)
 [setAudioDic setValue:@(kAudioFormatMPEG4AAC) forKey:AVFormatIDKey];
 
 //設置灌音采樣率(Hz) 如:AVSampleRateKey==8000/44100/96000(影響音頻的質量)
 [setAudioDic setValue:@(44100) forKey:AVSampleRateKey];
 
 //設置灌音通道數1 Or 2
 [setAudioDic setValue:@(1) forKey:AVNumberOfChannelsKey];
 
 //線性采樣位數 8、16、24、32
 [setAudioDic setValue:@16 forKey:AVLinearPCMBitDepthKey];
 //灌音的質量
 [setAudioDic setValue:@(AVAudioQualityHigh) forKey:AVEncoderAudioQualityKey];
 
 NSString *strUrl = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
 
 NSString *fileName = [NSString stringWithFormat:@"%ld", (long)[[NSDate date] timeIntervalSince1970]];
 
 
 NSURL *url = [NSURL fileURLWithPath:[NSString stringWithFormat:@"%@/%@.aac", strUrl, fileName]];
 _audioPlayURL = url;
 
 NSError *error;
 //初始化
 self.audioRecorder = [[AVAudioRecorder alloc]initWithURL:url settings:setAudioDic error:&error];
 //開啟音量檢測
 self.audioRecorder.meteringEnabled = YES;
 self.audioRecorder.delegate = self;

}

6.添加鍵盤收受接管鍵Done

//給鍵盤添加done鍵
-(void) addDone
{
 //TextView的鍵盤定制收受接管按鈕
  UIToolbar * toolBar = [[UIToolbar alloc]initWithFrame:CGRectMake(0, 0, 320, 30)];
 
 UIBarButtonItem * item1 = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(tapDone:)];
 UIBarButtonItem * item2 = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
  UIBarButtonItem * item3 = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
 toolBar.items = @[item2,item1,item3];
 
  self.sendTextView.inputAccessoryView =toolBar;
}

三.編寫控件的回調辦法
控件添加好今後上面要添加觸發控件要干的工作:
1.從最龐雜的開端,長按發送灌音的按鈕時,會灌音。松開收時會發送(在發送時要斷定音頻的時光,太小不許可發送)。灌音時上滑撤消灌音(刪除灌音文件)。重要是給灌音按鈕加了一個LongPress手勢,依據手勢的狀況來做分歧的工作。關於手勢的內容請參考之前的博客:(iOS開辟之手勢辨認),上面是灌音營業邏輯的完成(小我在Coding的時刻,感到這一塊是對象條中最龐雜的部門),代碼以下:  

//長按手勢觸發的辦法
-(void)sendVoiceButtonLongPress:(id)sender
{
 static int i = 1;
 if ([sender isKindOfClass:[UILongPressGestureRecognizer class]]) {
  
  UILongPressGestureRecognizer * longPress = sender;
  
  //灌音開端
  if (longPress.state == UIGestureRecognizerStateBegan)
  {
   
   i = 1;
   
   [self.sendVoiceButton setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
   //灌音初始化
   [self audioInit];
   
   //創立灌音文件,預備灌音
   if ([self.audioRecorder prepareToRecord])
   {
    //開端
    [self.audioRecorder record];
    
    //設置准時檢測音質變化
    _timer = [NSTimer scheduledTimerWithTimeInterval:0.05 target:self selector:@selector(detectionVoice) userInfo:nil repeats:YES];
   }
  }
  
  
  //撤消灌音
  if (longPress.state == UIGestureRecognizerStateChanged)
  {
   
   CGPoint piont = [longPress locationInView:self];
   NSLog(@"%f",piont.y);

   if (piont.y < -20)
   {
    if (i == 1) {
     
     [self.sendVoiceButton setBackgroundImage:[UIImage imageNamed:@"chat_bottom_textfield.png"] forState:UIControlStateNormal];
     [self.sendVoiceButton setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
     //刪除錄制文件
     [self.audioRecorder deleteRecording];
     [self.audioRecorder stop];
     [_timer invalidate];
     
     UIAlertView *alter = [[UIAlertView alloc] initWithTitle:@"提醒" message:@"灌音撤消" delegate:nil cancelButtonTitle:@"撤消" otherButtonTitles: nil];
     [alter show];
     //去除圖片用的
     self.cancelBlock(1);
     i = 0;
     
    }

    
   }
   }
  
  if (longPress.state == UIGestureRecognizerStateEnded) {
   if (i == 1)
   {
    NSLog(@"灌音停止");
    [self.sendVoiceButton setBackgroundImage:[UIImage imageNamed:@"chat_bottom_textfield.png"] forState:UIControlStateNormal];
    [self.sendVoiceButton setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    
    double cTime = self.audioRecorder.currentTime;
    if (cTime > 1)
    {
     //假如錄制時光<2 不發送
     NSLog(@"收回去");
     self.urlBlock(self.audioPlayURL);
    }
    else
    {
     //刪除記載的文件
     [self.audioRecorder deleteRecording];
     UIAlertView *alter = [[UIAlertView alloc] initWithTitle:@"提醒" message:@"灌音時光太短!" delegate:nil cancelButtonTitle:@"撤消" otherButtonTitles: nil];
     [alter show];
     self.cancelBlock(1);
     
    }
    [self.audioRecorder stop];
    [_timer invalidate];
   }
  }
  
  
 }
 
}

2.上面的代碼是檢測音量的變更,用於依據音質變化圖片,代碼以下:

//灌音的音量探測
- (void)detectionVoice
{
 [self.audioRecorder updateMeters];//刷新音量數據
 //獲得音量的均勻值 [recorder averagePowerForChannel:0];
 //音量的最年夜值 [recorder peakPowerForChannel:0];
 
 CGFloat lowPassResults = pow(10, (0.05 * [self.audioRecorder peakPowerForChannel:0]));
 
 //把聲響的音量傳給挪用者
 self.volumeBlock(lowPassResults);
}

3.輕擊輸出框時,切換到體系鍵盤,代碼以下:

//輕擊sendText切換鍵盤
-(void)tapGesture:(UITapGestureRecognizer *) sender
{
 if ([self.sendTextView.inputView isEqual:self.functionView])
 {
  self.sendTextView.inputView = nil;
  
  [self.changeKeyBoardButton setImage:[UIImage imageNamed:@"chat_bottom_smile_nor.png"] forState:UIControlStateNormal];
  
  [self.sendTextView reloadInputViews];
 }
 
 if (![self.sendTextView isFirstResponder])
 {
  [self.sendTextView becomeFirstResponder];
 }
}

4.經由過程輸出框的文字若干轉變toolView的高度,由於輸出框的束縛是加在ToolView上的,所以須要把輸出框的ContentSize經由過程block傳到ToolView的挪用者上,讓ToolView的父視圖來轉變ToolView的高度,從而sendTextView的高度也會跟著轉變的,上面的代碼是把ContentSize交給父視圖:代碼以下:

//經由過程文字的若干轉變toolView的高度
-(void)textViewDidChange:(UITextView *)textView
{
 CGSize contentSize = self.sendTextView.contentSize;
 
 self.sizeBlock(contentSize);
}

後果以下,文字多時TextView的高度也會增年夜:

5.點擊最右邊的按鈕觸發的事宜(切換文本輸出框和灌音按鈕),代碼以下:

//切換聲響按鍵和文字輸出框
-(void)tapVoiceChangeButton:(UIButton *) sender
{

 if (self.sendVoiceButton.hidden == YES)
 {
  self.sendTextView.hidden = YES;
  self.sendVoiceButton.hidden = NO;
  [self.voiceChangeButton setImage:[UIImage imageNamed:@"chat_bottom_keyboard_nor.png"] forState:UIControlStateNormal];
  
  if ([self.sendTextView isFirstResponder]) {
   [self.sendTextView resignFirstResponder];
  }
 }
 else
 {
  self.sendTextView.hidden = NO;
  self.sendVoiceButton.hidden = YES;
  [self.voiceChangeButton setImage:[UIImage imageNamed:@"chat_bottom_voice_press.png"] forState:UIControlStateNormal];
  
  if (![self.sendTextView isFirstResponder]) {
   [self.sendTextView becomeFirstResponder];
  }
 }
}

6.點擊return發送文字(經由過程Block回調傳入到父視圖上),代碼以下:

//發送信息(點擊return)
- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text
{
 if ([text isEqualToString:@"\n"])
 {
  
  //經由過程block回調把text的值傳遞到Controller中共
  self.textBlock(self.sendTextView.text);
  
  self.sendTextView.text = @"";
  
  return NO;
 }
 return YES;
}

7.灌音按鈕自己要做的工作(在LongPress沒有被觸發時挪用)代碼以下:

//發送聲響按鈕回調的辦法
-(void)tapSendVoiceButton:(UIButton *) sender
{
 NSLog(@"sendVoiceButton");
 //點擊發送按鈕沒有觸發長按手勢要做的事兒
 UIAlertView *alter = [[UIAlertView alloc] initWithTitle:@"提醒" message:@"按住灌音" delegate:nil cancelButtonTitle:@"撤消" otherButtonTitles: nil];
 [alter show];
}

8.挪用臉色鍵盤:

//釀成臉色鍵盤
-(void)tapChangeKeyBoardButton:(UIButton *) sender
{
 if ([self.sendTextView.inputView isEqual:self.functionView])
 {
  self.sendTextView.inputView = nil;
  
  [self.changeKeyBoardButton setImage:[UIImage imageNamed:@"chat_bottom_smile_nor.png"] forState:UIControlStateNormal];
  
  [self.sendTextView reloadInputViews];
 }
 else
 {
  self.sendTextView.inputView = self.functionView;
  
  
  [self.changeKeyBoardButton setImage:[UIImage imageNamed:@"chat_bottom_keyboard_nor.png"] forState:UIControlStateNormal];
  
  [self.sendTextView reloadInputViews];
 }
 
 if (![self.sendTextView isFirstResponder])
 {
  [self.sendTextView becomeFirstResponder];
 }
 
 if (self.sendTextView.hidden == YES) {
  self.sendTextView.hidden = NO;
  self.sendVoiceButton.hidden = YES;
  [self.voiceChangeButton setImage:[UIImage imageNamed:@"chat_bottom_voice_press.png"] forState:UIControlStateNormal];
  
 }

}

以上就是ToolView的一切封裝代碼,至於在Controller中若何應用他來發送新聞,若何界說聊天Cell,若何處置灌音文件,聊地利的氣泡是若何完成的等功效,在今後的文章中會持續講授,願望年夜家持續存眷。

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