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标题: 关于本地视频关闭后渲染UI的问题 [打印本页]

作者: kenshin 时间: 2016-3-2 17:23
标题: 关于本地视频关闭后渲染UI的问题
你好，我在进行视频通讯的时候，关闭本地视频后。当然修改本地视频的frame时(改小)，UIView上原来的区域保留了视频最后一帧的图像。我想清除掉这个图像。请问请改如何处理呢？

               1                                                       2

你好，图1是正常的显示情况，图2中蓝色框的区域就是遗留在view上的最后一帧的图像。我现在想清空它，不知道是 layer渲染的问题还是 view的问题
下面是我的代码麻烦你了。

//
//  VideoVC.m
//  MchatDemo
//
//  Created by kenshin2 on 16/2/18.
//  Copyright © 2016年 kenshin. All rights reserved.
//

#define heightMenu 170

//44 45 50、 50 51 56 、54 55 60、三种灰黑背景色RGB
#define headBackA [UIColor colorWithRed:44.0/255 green:45.0/255 blue:50.0/255 alpha:1.0]
#define headBackB [UIColor colorWithRed:50.0/255 green:51.0/255 blue:56.0/255 alpha:1.0]
#define headBackC [UIColor colorWithRed:54.0/255 green:55.0/255 blue:60.0/255 alpha:1.0]

#define backColor [UIColor colorWithRed:32.0/255 green:33.0/255 blue:38.0/255 alpha:1.0]

#import "VideoVC.h"
#import <QuartzCore/QuartzCore.h>
#import <AVFoundation/AVFoundation.h>
#import "AppDelegate.h"
#import "ViewController.h"
#import "Tools.h"

#import "AnyChatPlatform.h"
#import "AnyChatDefine.h"
#import "AnyChatErrorCode.h"

@implementation VideoVC
{
BOOL             isJingYin;
BOOL             isHandFree;
BOOL             isOnlyOnce;

UIImageView       *imgJingYin;
UIImageView       *imgHands;
UIImageView       *imgVideoSwitch;
UIImageView       *imgHangUp;
UIImageView       *imgAddFriends;

UIControl          *turnCamera;//切换摄像头
UIControl          *ctrlAddFriends;

UIView             *containUp;//下部UI的容器
MZTimerLabel       *MZTtime;
UILabel          *labTimer;
UIControl          *ctrlHangUp;
UIControl          *ctrljingYin;
UIControl          *ctrlVideo;//本地视频开关
UIControl          *ctrlMianTi;
NSString          *speaker;//麦克风
NSString          *receiver;//听筒

//静音、免提、视频
UILabel          *jingYinLab;
UILabel          *mianTiLab;
UILabel          *videoLab;

//语音时的头像
UIImageView       *headSelfImgV;
UIImageView       *headTwoImgV;
UIImageView       *headThreeImgV;
UIImageView       *headFourImgV;
UIImageView       *headFiveImgV;
UIImageView       *headSixImgV;
UIImageView       *headSevenImgV;
UIImageView       *headEightImgV;

NSMutableArray    *remoteVideos;
}

+ (BOOL) getCuPageIsVideoVC
{
return isCuVideoVC;
}

#pragma mark 重连在ViewController 中被调用
- (void) reConnectVideo
{
[self openLocalMicrophone];//需要根据重连之前的状态来设置【是否静音】
[self StartLocalVideoChat];//需要根据重连之前的状态来设置【是否打开视频】
[self myEnterRoomChat];//初始化远端数据

}

- (void)viewDidLoad
{
[super viewDidLoad];
[self setUI];
// [self StartLocalVideoChat];//  local Video[枚举出本地的摄像头并使用]
[self myEnterRoomChat]; //  iRemote Video
[self openLocalMicrophone];
[AnyChatPlatform SetSDKOptionInt:BRAC_SO_NETWORK_AUTORECONNECT :1];// 网络掉线自动重连功能控制
isCuVideoVC = YES;
}

- (void)viewWillAppear

BOOL)animated
{
[super viewWillAppear:YES];
[self performSelector

selector(delayCheckCuDeviceIsSupportVideoChat) withObject:self afterDelay:1.5f];

//[远端进入时被调用]
self.pvBlock =  ^(int targerUserID,int imgViewTag,VideoVC *videoVC)
{
      NSMutableArray *onlyUsers = [[ViewController getSelfIsSingleObj] getOnlineUserArray];
      int cuUsers = (int)onlyUsers.count;
      NSLog(@"pvBlock 进入当前有%d人—————————————————————————————————————————————————— == %@", cuUsers ,onlyUsers);
      if (cuUsers == 0)//自己
      {
         [videoVC selfChatUI];
      }
      if (cuUsers == 1)//2人
      {
         [videoVC twoUserChatUI];
      }
      if (cuUsers == 2)//3人
      {
         [videoVC threeUserChatUI];
      }
      if (cuUsers == 3)//4人
      {
         [videoVC fourUserChatUI];
      }
      if (cuUsers > 3 && cuUsers <= 8)//5~9人
      {
         [videoVC fiveToNineUserChatUI];
      }
      // request other user video
      [AnyChatPlatform UserSpeakControl: targerUserID:YES];
      NSLog(@"------------------------------------targerUserID == %d", targerUserID);
      switch (imgViewTag)
      {
         case 1 :
         {
            [AnyChatPlatform SetVideoPos:targerUserID: videoVC.iRemoteVideoView1:0:0:0:0];//视频
            videoVC.iRemoteVideoView1.tag = targerUserID;//用于当远端视频关闭时为其设置背景头像
//             videoVC.iRemoteVideoView1.contentMode = UIViewContentModeScaleAspectFit;//显示样式
//             videoVC.iRemoteVideoView1.hidden = NO;
            break;
         }

         case 2 :
         {
            [AnyChatPlatform SetVideoPos:targerUserID: videoVC.iRemoteVideoView2:0:0:0:0];
               videoVC.iRemoteVideoView2.tag = targerUserID;
//             videoVC.iRemoteVideoView2.hidden = NO;
            break;
         }

         case 3 :
         {
            [AnyChatPlatform SetVideoPos:targerUserID: videoVC.iRemoteVideoView3:0:0:0:0];
               videoVC.iRemoteVideoView3.tag = targerUserID;
//             videoVC.iRemoteVideoView3.hidden = NO;
            break;
         }
         case 4 :
         {
            [AnyChatPlatform SetVideoPos:targerUserID: videoVC.iRemoteVideoView4:0:0:0:0];
               videoVC.iRemoteVideoView4.tag = targerUserID;
//             videoVC.iRemoteVideoView4.hidden = NO;
            break;
         }
         case 5 :
         {
            [AnyChatPlatform SetVideoPos:targerUserID: videoVC.iRemoteVideoView5:0:0:0:0];
               videoVC.iRemoteVideoView5.tag = targerUserID;
//             videoVC.iRemoteVideoView5.hidden = NO;
            break;
         }
         case 6 :
         {
            [AnyChatPlatform SetVideoPos:targerUserID: videoVC.iRemoteVideoView6:0:0:0:0];
               videoVC.iRemoteVideoView6.tag = targerUserID;
//             videoVC.iRemoteVideoView6.hidden = NO;
            break;
         }
         case 7 :
         {
            [AnyChatPlatform SetVideoPos:targerUserID: videoVC.iRemoteVideoView7:0:0:0:0];
               videoVC.iRemoteVideoView7.tag = targerUserID;
//             videoVC.iRemoteVideoView7.hidden = NO;
            break;
         }
         case 8 :
         {
            [AnyChatPlatform SetVideoPos:targerUserID: videoVC.iRemoteVideoView8:0:0:0:0];
               videoVC.iRemoteVideoView8.tag = targerUserID;
//             videoVC.iRemoteVideoView8.hidden = NO;
            break;
         }
      }
      [AnyChatPlatform UserCameraControl:targerUserID : YES];

};

//[远端离开房间时被调用]
self.aiBlock = ^(int imgViewTag,VideoVC *videoVC)
{
      NSMutableArray *onlyUsers = [[ViewController getSelfIsSingleObj] getOnlineUserArray];
      int cuUsers = (int)onlyUsers.count;
      NSLog(@"aiBlock 离开当前有%d人—————————————————————————————————————————————————— == %@", cuUsers, onlyUsers);
      if (cuUsers == 0)//自己
      {
         [videoVC selfChatUI];
      }
      if (cuUsers == 1)//2人
      {
         [videoVC twoUserChatUI];
      }
      if (cuUsers == 2)//3人
      {
         [videoVC threeUserChatUI];
      }
      if (cuUsers == 3)//4人
      {
         [videoVC fourUserChatUI];
      }
      if (cuUsers > 3 && cuUsers <= 8)
      {
         [videoVC fiveToNineUserChatUI];
      }

};

//用于设置免提
NSMutableArray *EnumAudioArr = [AnyChatPlatform EnumAudioPlayback];
NSLog(@"AudioPlayback %@", EnumAudioArr);
speaker = [EnumAudioArr objectAtIndex:0];
receiver = [EnumAudioArr objectAtIndex:1];

}

#pragma mark 初始化UI
- (void)setUI
{

[[UIApplication sharedApplication] setIdleTimerDisabled:YES];//[禁止屏幕休眠]
self.view.backgroundColor = backColor;//背景色

//远端视频for循环当前控制到9个
CGFloat widthV = screenWidth/3.0;
CGFloat splitLine = screenHeight - widthV*3;//分割线
CGFloat margin = 10;
CGFloat sizeCtrl  = 44;

self.theLocalView    = [[UIView alloc] initWithFrame:CGRectMake(0, 80, screenWidth/2, screenWidth/2)];

self.iRemoteVideoView1 = [UIImageView new];
self.iRemoteVideoView2 = [UIImageView new];
self.iRemoteVideoView3 = [UIImageView new];
self.iRemoteVideoView4 = [UIImageView new];
self.iRemoteVideoView5 = [UIImageView new];
self.iRemoteVideoView6 = [UIImageView new];
self.iRemoteVideoView7 = [UIImageView new];
self.iRemoteVideoView8 = [UIImageView new];

//当关闭视频时，本地和远端UI都切换为对应用户的头像作为背景
//初始化语音头像
headSelfImgV  = [UIImageView new];
headSelfImgV.image = [UIImage imageNamed

"defaultHead"];

headTwoImgV = [UIImageView new];
headThreeImgV = [UIImageView new];
headFourImgV = [UIImageView new];
headFiveImgV = [UIImageView new];
headSixImgV = [UIImageView new];
headSevenImgV = [UIImageView new];
headEightImgV = [UIImageView new];

//切换摄像头
turnCamera = [[UIControl alloc] initWithFrame:self.theLocalView.frame];
[turnCamera addTarget:self action

selector(turnCameraPress) forControlEvents:UIControlEventTouchUpInside];
//在绘制本地视频的回调函数中添加本控件[如果在这里添加会被绘制的本地视频覆盖掉]

//添加好友
ctrlAddFriends = [[UIControl alloc] initWithFrame:CGRectMake(screenWidth - sizeCtrl, 0, sizeCtrl, sizeCtrl)];
[ctrlAddFriends addTarget:self action

selector(addFriendsChat) forControlEvents:UIControlEventTouchUpInside];
imgAddFriends = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 35, 35)];
imgAddFriends.image = [UIImage imageNamed

"barbuttonicon_addfriends"];
[ctrlAddFriends addSubview:imgAddFriends];

//下UI容器
containUp = [[UIView alloc] initWithFrame:CGRectMake(0, screenHeight - splitLine, screenWidth, splitLine)];

//聊天时长
labTimer = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, screenWidth, sizeCtrl)];
MZTtime = [[MZTimerLabel alloc] initWithLabel:labTimer];
[MZTtime start];
labTimer.textAlignment = NSTextAlignmentCenter;
labTimer.font = [UIFont systemFontOfSize:14];
labTimer.textColor = [UIColor whiteColor];
[containUp addSubview:labTimer];

//适配 (⊙﹏⊙)b
CGFloat sizeHangUp = 120/2.5;
CGFloat widthBtn = 120/3;
CGFloat heightBtn  = 156/3;
CGFloat y_JMS    = splitLine + margin - sizeCtrl*3;//静音、免提、视频的y坐标
NSLog(@"screenHeight == %f", screenHeight);
if (screenHeight > 480)
{
      sizeHangUp = 120/1.8;
      widthBtn = 120/2;
      heightBtn  = 156/2;
      y_JMS    = splitLine/4;
}

//静音、
ctrljingYin = [[UIControl alloc] initWithFrame:CGRectMake(screenWidth/4 - widthBtn/2, y_JMS, widthBtn, heightBtn)];
[ctrljingYin addTarget:self action

selector(jingYinPress) forControlEvents:UIControlEventTouchUpInside];

imgJingYin = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, widthBtn, heightBtn)];
imgJingYin.image = [UIImage imageNamed

"multitalkMuteMode"];

jingYinLab = [[UILabel alloc] initWithFrame:CGRectMake(0, widthBtn, widthBtn, 20)];
jingYinLab.text = @"静音";
[self setLabStyle:jingYinLab];
[ctrljingYin addSubview:imgJingYin];
[ctrljingYin addSubview:jingYinLab];
[containUp addSubview:ctrljingYin];

//免提、
ctrlMianTi = [[UIControl alloc] initWithFrame:CGRectMake(screenWidth/2 - widthBtn/2, y_JMS, widthBtn, heightBtn)];
[ctrlMianTi addTarget:self action

selector(mianTiSwitch) forControlEvents:UIControlEventTouchUpInside];

imgHands = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, widthBtn, heightBtn)];
imgHands.image = [UIImage imageNamed

"multitalkSpeakerMode"];

mianTiLab = [[UILabel alloc] initWithFrame:CGRectMake(0, widthBtn, widthBtn, 20)];
mianTiLab.text = @"免提";
[self setLabStyle:mianTiLab];
[ctrlMianTi addSubview:imgHands];
[ctrlMianTi addSubview:mianTiLab];
[containUp addSubview:ctrlMianTi];

//视频开关
ctrlVideo = [[UIControl alloc] initWithFrame:CGRectMake(screenWidth/2 + screenWidth/4 - widthBtn/2, y_JMS, widthBtn, heightBtn)];
[ctrlVideo addTarget:self action

selector(localVideoSwitch) forControlEvents:UIControlEventTouchUpInside];

imgVideoSwitch = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, widthBtn, heightBtn)];
imgVideoSwitch.image = [UIImage imageNamed:@"multitalkVideo"];

videoLab = [[UILabel alloc] initWithFrame:CGRectMake(0, widthBtn, widthBtn, 20)];
videoLab.text = @"视频";
[self setLabStyle:videoLab];
[ctrlVideo addSubview:imgVideoSwitch];
[ctrlVideo addSubview:videoLab];
[containUp addSubview:ctrlVideo];

//挂断
CGFloat xHangUp = screenWidth/2 - sizeHangUp/2;
CGFloat yHangUp = splitLine - margin - sizeHangUp;

ctrlHangUp = [[UIControl alloc] initWithFrame:CGRectMake(xHangUp, yHangUp, sizeHangUp, sizeHangUp)];
[ctrlHangUp addTarget:self action:@selector(hangUp) forControlEvents:UIControlEventTouchUpInside];
[ctrlHangUp addTarget:self action:@selector(hangUpDown) forControlEvents:UIControlEventTouchDown];
[ctrlHangUp addTarget:self action:@selector(hangUpUp) forControlEvents:UIControlEventTouchUpOutside];

imgHangUp = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, sizeHangUp, sizeHangUp)];
imgHangUp.image = [UIImage imageNamed:@"callDeclineBtn"];

[ctrlHangUp addSubview:imgHangUp];
[containUp addSubview:ctrlHangUp];

[self.view addSubview:self.theLocalView];

remoteVideos = [NSMutableArray new];
[remoteVideos addObject:self.iRemoteVideoView1];
[remoteVideos addObject:self.iRemoteVideoView2];
[remoteVideos addObject:self.iRemoteVideoView3];
[remoteVideos addObject:self.iRemoteVideoView4];
[remoteVideos addObject:self.iRemoteVideoView5];
[remoteVideos addObject:self.iRemoteVideoView6];
[remoteVideos addObject:self.iRemoteVideoView7];
[remoteVideos addObject:self.iRemoteVideoView8];

// [self.view addSubview:self.iRemoteVideoView1];
// [self.view addSubview:self.iRemoteVideoView2];
// [self.view addSubview:self.iRemoteVideoView3];
// [self.view addSubview:self.iRemoteVideoView4];
// [self.view addSubview:self.iRemoteVideoView5];
// [self.view addSubview:self.iRemoteVideoView6];
// [self.view addSubview:self.iRemoteVideoView7];
// [self.view addSubview:self.iRemoteVideoView8];
for (int i = 0; i < [remoteVideos count]; i++)
{
[self.view addSubview:[remoteVideos objectAtIndex:i]];
}

[self.view addSubview:containUp];
[self.view addSubview:ctrlAddFriends];

[self loadVoiceHeadImg];
}

- (void)setLabStyle

UILabel *)lab
{
lab.font       = [UIFont systemFontOfSize:12];
lab.textColor    = [UIColor whiteColor];
lab.textAlignment = NSTextAlignmentCenter;

}

#pragma mark 切换前后摄像头
- (void)turnCameraPress
{
static int CurrentCameraDevice = 1;
NSMutableArray* cameraDeviceArray = [AnyChatPlatform EnumVideoCapture];
if(cameraDeviceArray.count == 2)
{
      CurrentCameraDevice = (CurrentCameraDevice+1) % 2;
      [AnyChatPlatform SelectVideoCapture:[cameraDeviceArray objectAtIndex:CurrentCameraDevice]];
}

}

#pragma mark 隐藏远端UI
- (void)hiddenAllVideoView
{
// self.iRemoteVideoView1.hidden = YES;
// self.iRemoteVideoView2.hidden = YES;
// self.iRemoteVideoView3.hidden = YES;
// self.iRemoteVideoView4.hidden = YES;
// self.iRemoteVideoView5.hidden = YES;
// self.iRemoteVideoView6.hidden = YES;
// self.iRemoteVideoView7.hidden = YES;
// self.iRemoteVideoView8.hidden = YES;
// self.iRemoteVideoView9.hidden = YES;
for (int i = 0; i < [remoteVideos count]; i++)
{
      [[remoteVideos objectAtIndex:i] setHidden:YES];
}

}

#pragma mark 加载音频头像
- (void)loadVoiceHeadImg//后期需从联系人数据库中获取对应用户的头像
{
for (int i = 0; i < [remoteVideos count]; i++)
{
      [[remoteVideos objectAtIndex:i] setImage:[UIImage imageNamed:@"defaultHead"]];
}
}

#pragma mark 1人  UI
- (void)selfChatUI
{
[self hiddenAllVideoView];
CGFloat sizeVideo = screenWidth;
self.theLocalView.frame  = CGRectMake(0, 0, sizeVideo, sizeVideo);

turnCamera.frame = self.theLocalView.frame;//切换摄像头
self.localVideoSurface.frame = CGRectMake(0, 0, sizeVideo, sizeVideo);
[self setVideoBackgroundColorOnNine];

NSLog(@"2");

}

#pragma mark 2人  UI
- (void)twoUserChatUI
{
[self hiddenAllVideoView];
CGFloat sizeVideo = screenWidth/2;

self.theLocalView.frame    = CGRectMake(0,       80, sizeVideo, sizeVideo);
self.iRemoteVideoView1.frame = CGRectMake(sizeVideo, 80, sizeVideo, sizeVideo);

self.iRemoteVideoView1.hidden = NO;
turnCamera.frame = self.theLocalView.frame;//切换摄像头
self.localVideoSurface.frame = CGRectMake(0, 0, sizeVideo, sizeVideo);
[self setVideoBackgroundColorOnNine];
NSLog(@"2");

}

#pragma mark 3人  UI
- (void)threeUserChatUI
{
[self hiddenAllVideoView];
CGFloat sizeVideo = screenWidth/2;

self.theLocalView.frame    = CGRectMake(0,                         0,       sizeVideo, sizeVideo);
self.iRemoteVideoView1.frame = CGRectMake(sizeVideo,                0,       sizeVideo, sizeVideo);
self.iRemoteVideoView2.frame = CGRectMake(screenWidth/2 - sizeVideo/2, sizeVideo, sizeVideo, sizeVideo);

self.iRemoteVideoView1.hidden = NO;
self.iRemoteVideoView2.hidden = NO;
turnCamera.frame = self.theLocalView.frame;//切换摄像头
self.localVideoSurface.frame = CGRectMake(0, 0, sizeVideo, sizeVideo);
[self setVideoBackgroundColorOnNine];
NSLog(@"3");

}

#pragma mark 4人  UI
- (void)fourUserChatUI
{
[self hiddenAllVideoView];
CGFloat sizeVideo = screenWidth/2;

self.theLocalView.frame    = CGRectMake(0,       0,       sizeVideo, sizeVideo);
self.iRemoteVideoView1.frame = CGRectMake(sizeVideo, 0,       sizeVideo, sizeVideo);
self.iRemoteVideoView2.frame = CGRectMake(0,       sizeVideo, sizeVideo, sizeVideo);
self.iRemoteVideoView3.frame = CGRectMake(sizeVideo, sizeVideo, sizeVideo, sizeVideo);

self.iRemoteVideoView1.hidden = NO;
self.iRemoteVideoView2.hidden = NO;
self.iRemoteVideoView3.hidden = NO;
turnCamera.frame = self.theLocalView.frame;//切换摄像头
self.localVideoSurface.frame = CGRectMake(0, 0, sizeVideo, sizeVideo);
[self setVideoBackgroundColorOnNine];
NSLog(@"4");

}

#pragma mark 5~9人  UI
- (void)fiveToNineUserChatUI
{
[self hiddenAllVideoView];
CGFloat sizeVideo = screenWidth/3;

self.theLocalView.frame    = CGRectMake(0,          0,          sizeVideo, sizeVideo);
self.iRemoteVideoView1.frame = CGRectMake(sizeVideo,    0,          sizeVideo, sizeVideo);
self.iRemoteVideoView2.frame = CGRectMake(sizeVideo * 2, sizeVideo,    sizeVideo, sizeVideo);

self.iRemoteVideoView3.frame = CGRectMake(0,          sizeVideo,    sizeVideo, sizeVideo);
self.iRemoteVideoView4.frame = CGRectMake(sizeVideo,    sizeVideo,    sizeVideo, sizeVideo);
self.iRemoteVideoView5.frame = CGRectMake(sizeVideo * 2, sizeVideo,    sizeVideo, sizeVideo);

self.iRemoteVideoView6.frame = CGRectMake(0,          sizeVideo * 2, sizeVideo, sizeVideo);
self.iRemoteVideoView7.frame = CGRectMake(sizeVideo,    sizeVideo * 2, sizeVideo, sizeVideo);
self.iRemoteVideoView8.frame = CGRectMake(sizeVideo * 2, sizeVideo * 2, sizeVideo, sizeVideo);

self.iRemoteVideoView1.hidden = NO;
self.iRemoteVideoView2.hidden = NO;
self.iRemoteVideoView3.hidden = NO;
self.iRemoteVideoView4.hidden = NO;
self.iRemoteVideoView5.hidden = NO;
self.iRemoteVideoView6.hidden = NO;
self.iRemoteVideoView7.hidden = NO;
self.iRemoteVideoView8.hidden = NO;

turnCamera.frame = self.theLocalView.frame;//切换摄像头
self.localVideoSurface.frame = CGRectMake(0, 0, sizeVideo, sizeVideo);
[self setVideoBackgroundColorOnNine];
NSLog(@"5~9");

}

//- (void)setVideoBackgroundColorOnThree
//{
// self.theLocalView.backgroundColor    = headBackA;
// self.iRemoteVideoView1.backgroundColor = headBackB;    //A B
// self.iRemoteVideoView2.backgroundColor = headBackC;    //  C
//
//}
//
//- (void)setVideoBackgroundColorOnFour
//{
// self.theLocalView.backgroundColor    = headBackA;
// self.iRemoteVideoView1.backgroundColor = headBackB;    //A  B
// self.iRemoteVideoView2.backgroundColor = headBackB;    //B  C
// self.iRemoteVideoView3.backgroundColor = headBackA;
//
//}

- (void)setVideoBackgroundColorOnNine
{
self.theLocalView.backgroundColor    = headBackA;
self.iRemoteVideoView1.backgroundColor = headBackB;    //A  B  C
self.iRemoteVideoView2.backgroundColor = headBackC;    //B  C  A
self.iRemoteVideoView3.backgroundColor = headBackB;    //C  A  B
self.iRemoteVideoView4.backgroundColor = headBackC;
self.iRemoteVideoView5.backgroundColor = headBackA;
self.iRemoteVideoView6.backgroundColor = headBackC;
self.iRemoteVideoView7.backgroundColor = headBackA;
self.iRemoteVideoView8.backgroundColor = headBackB;

}

- (void)delayCheckCuDeviceIsSupportVideoChat
{
[self checkCuDeviceIsSupportVideoChat];

}

- (BOOL)checkCuDeviceIsSupportVideoChat//微信上不支持 iPhone4 的视频聊天也许是因为4视频的时候很卡的原因
{
NSString *cuDeviceStr =  [Tools getCurrentDeviceModel];

if ([cuDeviceStr isEqualToString:@"iPhone 4 (A1332)"] |
      [cuDeviceStr isEqualToString:@"iPhone 4 (A1332)"] |
      [cuDeviceStr isEqualToString:@"iPhone 4 (A1349)"] |
      [cuDeviceStr isEqualToString:@"iPhone 4S (A1387/A1431)"]){

      [self showAlertCuDeviceNoSupportVideoChat];
      return NO;
}

return YES;

}

#pragma mark 当前设备不能使用视频功能
- (void)showAlertCuDeviceNoSupportVideoChat
{
UIAlertView*alert = [[UIAlertView alloc]initWithTitle:@"当前设备不能使用视频功能。"
                                                message:@""
                                             delegate:self
                                    cancelButtonTitle:@"我知道了"
                                    otherButtonTitles:nil,
                     nil];
[alert show];

}

#pragma mark 轻触切换摄像头
- (void)showTipsHowToTurnCamera
{

UILabel *label = [[UILabel alloc] init];
label.text = @"轻触切换摄像头";
label.font = [UIFont systemFontOfSize:14];
label.textAlignment = NSTextAlignmentCenter;//内容居中
label.textColor = [UIColor whiteColor];
label.backgroundColor = [UIColor blackColor];
label.frame = self.theLocalView.frame;
label.alpha = 0.0;//这里将透明度设置为完全透明，是为了让它在之后渐渐显示出来。
[self.view addSubview:label];

//动画
[UIView animateWithDuration:1.0 animations:^{
      label.alpha = 0.5;

} completion:^(BOOL finished)
   {
      [UIView animateWithDuration:1.0 delay:1.5 options:UIViewAnimationOptionCurveLinear animations:^{

         label.alpha = 0.0;

      } completion:^(BOOL finished)
      {

            [label removeFromSuperview];//将label从控制器中移除【也从内存中释放了】

      }];
   }];

}

#pragma mark [添加]好友聊天
- (void)addFriendsChat
{
//1.跳转到邀请列表界面[可多选]
//2.点击邀请界面的确定按钮后，向指定好友发送邀请[邀请前验证合法性：总人数不超过9人]
//3.被邀请人员在进入聊天室之前需要验证当前房间人数的合法性如果包括自己人数超过9人则不允许进入并给出提示
NSLog(@"添加好友进入聊天");

}

#pragma mark [开关]静音
- (void)jingYinPress
{
if (isJingYin == NO)//关闭
{
      isJingYin = YES;
      imgJingYin.image = [UIImage imageNamed:@"multitalkMuteModeOn"];
      [AnyChatPlatform UserSpeakControl:-1:NO];
//       NSLog(@"——————————————————————————————————————————————————————————————————————————————————关闭----本地麦克风");
}
else//打开
{
      isJingYin = NO;
      imgJingYin.image = [UIImage imageNamed:@"multitalkMuteMode"];
      [AnyChatPlatform UserSpeakControl:-1:YES];
//       NSLog(@"——————————————————————————————————————————————————————————————————————————————————打开----本地麦克风");
}

}

#pragma mark [开关]免提
- (void)mianTiSwitch
{
if (speaker == nil)
{
      NSMutableArray *EnumAudioArr = [AnyChatPlatform EnumAudioPlayback];
      NSLog(@"AudioPlayback %@", EnumAudioArr);
      speaker = [EnumAudioArr objectAtIndex:0];
      receiver = [EnumAudioArr objectAtIndex:1];

}
if (!isHandFree)
{
      [AnyChatPlatform SelectAudioPlayback:speaker];//设置免提模式
      NSLog(@"打开：%@", speaker);
      isHandFree = YES;
      imgHands.image = [UIImage imageNamed:@"multitalkSpeakerModeOn"];

}
else
{
      [AnyChatPlatform SelectAudioPlayback:receiver];//设置听筒模式
      NSLog(@"打开：%@", receiver);
      isHandFree = NO;
      imgHands.image = [UIImage imageNamed:@"multitalkSpeakerMode"];

}

}

#pragma mark [开关]视频
- (void)localVideoSwitch
{
if ([self checkCuDeviceIsSupportVideoChat])
{
      if (!isOnlyOnce)
      {
         isOnlyOnce = YES;
         [self showTipsHowToTurnCamera];
         [self StartLocalVideoChat];

      }

      if ([AnyChatPlatform GetCameraState:-1] == 1)
      {
         //open local Camera
         [AnyChatPlatform SetVideoPos:-1 :self :0 :0 :0 :0];
         [AnyChatPlatform UserCameraControl:-1 : YES];
         self.theLocalView.hidden = NO;
         imgVideoSwitch.image = [UIImage imageNamed:@"multitalkVideoOn"];

      }

      if ([AnyChatPlatform GetCameraState:-1] == 2)
      {
         //close local Camera
         [AnyChatPlatform UserCameraControl:-1 :NO];
         self.theLocalView.hidden = YES;
         imgVideoSwitch.image = [UIImage imageNamed:@"multitalkVideo"];

      }

}

}

#pragma mark [挂断]
- (void)hangUp
{
NSLog(@"通话时长为:%@",labTimer.text);
[self FinishVideoChat];
//获取根控制器，和当前的做个比较
AppDelegate *appDelegate = [UIApplication sharedApplication].delegate;
UIViewController *rootVC = appDelegate.window.rootViewController;
if (self == rootVC)
{
      ViewController *vc = [[ViewController alloc]init];
      [self presentViewController:vc animated:YES completion:nil];

}
else
{
      [self dismissViewControllerAnimated:YES completion:nil];

}

isCuVideoVC = NO;

}

- (void)hangUpDown
{
imgHangUp.image = [UIImage imageNamed:@"callDeclineBtnHL"];

}

- (void)hangUpUp
{
imgHangUp.image = [UIImage imageNamed:@"callDeclineBtn"];

}

#pragma mark 打开本地麦克风
- (void)openLocalMicrophone
{
[AnyChatPlatform UserSpeakControl: -1:YES];

}

#pragma mark 开启本地视频
- (void) StartLocalVideoChat
{
//Get a camera, Must be in the real machine.
NSMutableArray* cameraDeviceArray = [AnyChatPlatform EnumVideoCapture];//枚举出设备
if (cameraDeviceArray.count > 0)
{
      [AnyChatPlatform SelectVideoCapture:[cameraDeviceArray objectAtIndex:1]];//使用枚举出来的设备
}

// open local video
[AnyChatPlatform SetSDKOptionInt:BRAC_SO_LOCALVIDEO_OVERLAY :1];
// [AnyChatPlatform UserSpeakControl: -1:YES];
[AnyChatPlatform SetVideoPos:-1 :self :0 :0 :0 :0];
[AnyChatPlatform UserCameraControl:-1 : YES];

// [AnyChatPlatform SetSDKOptionInt:BRAC_SO_NETWORK_AUTORECONNECT :1];// 网络掉线自动重连功能控制
[AnyChatPlatform SetSDKOptionInt:BRAC_SO_LOCALVIDEO_ORIENTATION : self.interfaceOrientation];

}

#pragma mark 绘制本地视频
- (void) OnLocalVideoInit

id)session
{
self.localVideoSurface             = [AVCaptureVideoPreviewLayer layerWithSession: (AVCaptureSession*)session];
self.localVideoSurface.frame       = CGRectMake(0, 0, self.theLocalView.frame.size.width, self.theLocalView.frame.size.height);
self.localVideoSurface.videoGravity = AVLayerVideoGravityResizeAspectFill;

[self.theLocalView.layer addSublayer:self.localVideoSurface];
[self.view addSubview:turnCamera];
NSLog(@"—————————————————————#pragma mark 绘制本地视频—————————————————————————————————————————————");

}

#pragma mark - Instance Method 远端视频
- (void) myEnterRoomChat//[遍历聊天室中所有的人(自己除外)]
{
NSMutableArray *onlineUserMArray = [[ViewController getSelfIsSingleObj] getOnlineUserArray];

//获取循环的最大次数
int forCount = 0;
int uArrayCount = (int)onlineUserMArray.count;
uArrayCount > 8 ? (forCount = 8) : (forCount = uArrayCount);//kVideoWindowNumInt = 8个人
if (uArrayCount == 0)
{
      [self selfChatUI];
}
if (uArrayCount == 1)
{
      [self twoUserChatUI];
}
if (uArrayCount == 2)
{
      [self threeUserChatUI];
}
if (uArrayCount == 3)
{
      [self fourUserChatUI];
}
if (uArrayCount > 3 && uArrayCount <= 8)
{
      [self fiveToNineUserChatUI];
}
NSLog(@"———————VideoVC——————————————————————myEnterRoomChat—————————————————当前房间里除了我有%d个人", uArrayCount);
if (uArrayCount > 0)
{
      for (int i = 0; i < forCount; i++)
      {
         int iRemoteUserID = [[onlineUserMArray objectAtIndex:i] intValue];
         [self StartTargerVideoChatWithID:iRemoteUserID Tag

i+1)];

         //记录已经视频的userID到theTargetUserIDStrMArray[用于重连?]
         [[ViewController getSelfIsSingleObj].theOnChatUserIDStrMArray replaceObjectAtIndex:i
                                                                        withObject:[[NSString alloc] initWithFormat:@"%d",iRemoteUserID]];
      }
}

}

//初始化远端视频
- (void) StartTargerVideoChatWithID

int)targerUserID Tag

int)tag
{

NSString *userName = [AnyChatPlatform GetUserName:targerUserID];

// request other user video
[AnyChatPlatform UserSpeakControl: targerUserID:YES];
switch (tag)
{
      case 1 :
      {
         [AnyChatPlatform SetVideoPos:targerUserID: self.iRemoteVideoView1:0:0:0:0];
         self.iRemoteVideoView1.tag = targerUserID;//用于当远端视频关闭时为其设置背景头像
//          self.iRemoteVideoView1.contentMode = UIViewContentModeScaleAspectFit;
         break;
      }

      case 2 :
      {
         [AnyChatPlatform SetVideoPos:targerUserID: self.iRemoteVideoView2:0:0:0:0];
         self.iRemoteVideoView2.tag = targerUserID;
         break;
      }

      case 3 :
      {
         [AnyChatPlatform SetVideoPos:targerUserID: self.iRemoteVideoView3:0:0:0:0];
         self.iRemoteVideoView3.tag = targerUserID;
         break;
      }
      case 4 :
      {
         [AnyChatPlatform SetVideoPos:targerUserID: self.iRemoteVideoView4:0:0:0:0];
         self.iRemoteVideoView4.tag = targerUserID;
         break;
      }
      case 5 :
      {
         [AnyChatPlatform SetVideoPos:targerUserID: self.iRemoteVideoView5:0:0:0:0];
         self.iRemoteVideoView5.tag = targerUserID;
         break;
      }
      case 6 :
      {
         [AnyChatPlatform SetVideoPos:targerUserID: self.iRemoteVideoView6:0:0:0:0];
         self.iRemoteVideoView6.tag = targerUserID;
         break;
      }
      case 7 :
      {
         [AnyChatPlatform SetVideoPos:targerUserID: self.iRemoteVideoView7:0:0:0:0];
         self.iRemoteVideoView7.tag = targerUserID;
         break;
      }
      case 8 :
      {
         [AnyChatPlatform SetVideoPos:targerUserID: self.iRemoteVideoView8:0:0:0:0];
         self.iRemoteVideoView8.tag = targerUserID;
         break;
      }

}

[AnyChatPlatform UserCameraControl:targerUserID : YES];
[AnyChatPlatform SetSDKOptionInt:BRAC_SO_LOCALVIDEO_ORIENTATION : self.interfaceOrientation];

}

#pragma mark 视频旋转【当远端旋转视频时回调】
- (void)willAnimateRotationToInterfaceOrientation

UIInterfaceOrientation)toInterfaceOrientation duration

NSTimeInterval)duration
{
//device orientation
UIDeviceOrientation devOrientation = [UIDevice currentDevice].orientation;

if (devOrientation == UIDeviceOrientationLandscapeLeft)
{
      [self setFrameOfLandscapeLeft];
}
else if (devOrientation == UIDeviceOrientationLandscapeRight)
{
      [self setFrameOfLandscapeRight];
}
if (devOrientation == UIDeviceOrientationPortrait)
{
      [self setFrameOfPortrait];
}

}

#pragma mark - Video Rotation
-(void)setFrameOfPortrait
{

}

-(void)setFrameOfLandscapeLeft
{

}

-(void)setFrameOfLandscapeRight
{

}

- (void) FinishVideoChat
{
[AnyChatPlatform UserSpeakControl: -1 : NO];
[AnyChatPlatform UserCameraControl: -1 : NO];

//释放远端所有用户的麦克风和视频资源
for (NSString *uID in [ViewController getSelfIsSingleObj].theOnChatUserIDStrMArray )
{
      int userId = [uID intValue];
      if (userId != 0 )
      {
         [AnyChatPlatform UserSpeakControl : userId : NO];
         [AnyChatPlatform UserCameraControl: userId : NO];
      }
}

[AnyChatPlatform LeaveRoom:-1];

}

#pragma mark 释放资源[本地视频]
- (void) OnLocalVideoRelease

id)sender
{
if(self.localVideoSurface)
{
self.localVideoSurface = nil;
NSLog(@"—————————————————————#pragma mark 释放资源[本地视频]—————————————————————————————————————————————");
}

}

#pragma mark 设置远端语音头像
- (void) setRemoteUIBackgroundWithId

int)userId andState:(int)state
{
NSLog(@"远端摄像头状态改变 userid : %d, state : %d", userId, state);
//userId 要与 iRemoteVideoViewX 对应
//state 1:关闭摄像头 2：打开摄像头
for (int i = 0; i < [remoteVideos count]; i++)
{
      if (userId == [[remoteVideos objectAtIndex:i] tag])
      {
         if (state == 1)//后期需从联系人数据库中获取对应用户的头像
         {
            [[remoteVideos objectAtIndex:i] setImage:[UIImage imageNamed:@"defaultHead"]];
         }
      }
}

}

//隐藏状态栏
- (BOOL)prefersStatusBarHidden
{
return YES;

}

- (void)dealloc
{
imgJingYin             = nil;
imgHands             = nil;
imgVideoSwitch       = nil;
imgHangUp             = nil;
imgAddFriends          = nil;
turnCamera             = nil;
ctrlAddFriends       = nil;
containUp             = nil;
MZTtime                = nil;
labTimer             = nil;
ctrlHangUp             = nil;
ctrljingYin          = nil;
ctrlVideo             = nil;
ctrlMianTi             = nil;
speaker                = nil;
receiver             = nil;

self.theLocalView    = nil;
self.localVideoSurface  = nil;
self.iRemoteVideoView1  = nil;
self.iRemoteVideoView2  = nil;
self.iRemoteVideoView3  = nil;
self.iRemoteVideoView4  = nil;
self.iRemoteVideoView5  = nil;
self.iRemoteVideoView6  = nil;
self.iRemoteVideoView7  = nil;
self.iRemoteVideoView8  = nil;
self.iRemoteVideoView9  = nil;

}
@end

作者: kenshin 时间: 2016-3-3 10:34
肿么没有人回答我的问题。。。。

作者: kenshin 时间: 2016-3-3 14:52
我的问题已经得到了解决。不过方法不是清楚之前UIView上layer上渲染的图像，而是在这个之上再渲染一层新的UIView的layer，用这个方式来覆盖掉之前的layer。
代码如下：
//覆盖掉关闭视频时停留在theLocalView上的最后一帧的图像

代码如下：
//覆盖掉关闭视频时停留在theLocalView上的最后一帧的图像
         UIView *back = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.theLocalView.frame.size.width, self.theLocalView.frame.size.height)];
         back.backgroundColor = backColor;
         [self.theLocalView.layer addSublayer:back.layer];
         back = nil;

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