【Unity3D遊戲開發】iOS9 ReplayKit錄製視頻 (三十)

Unity遊戲需要視頻分享，之前用過第三方的，現在聽說蘋果有了自帶的ReplayKit，畢竟是遊戲中錄製視頻，視頻的大小，壓縮帶來的性能影響，抱着試試看的態度加入了下，性能感覺還可以，但是架不住蘋果的Objective-C和swift啊

#遊戲目標: 爲遊戲增加視頻分享

#開發環境: Unity5.3.0f4

#技術點: ReplayKit，需要ios9.0以上

直接上代碼吧

ReplayKitProxy.h

#import <UIKit/UIKit.h>
#import <ReplayKit/ReplayKit.h>

@interface ReplayKitProxy : NSObject<RPPreviewViewControllerDelegate, RPScreenRecorderDelegate>

+ (ReplayKitProxy*) sharedInstance;

// 是否支持錄像功能(僅ios9以上支持)
+ (BOOL)isSupportReplay;

// 開始錄製視頻
- (void)startRecording;

// 停止錄製視頻
- (void)stopRecording;

// 刪除已錄製視頻，必須在stopRecording之後調用(eg.離開視頻分享界面)
- (void)discardRecording;

// 顯示視頻
- (void)displayRecordingContent;

@end

ReplayKitProxy.m

#import "ReplayKitProxy.h"

@interface  ReplayKitProxy () <RPPreviewViewControllerDelegate, RPScreenRecorderDelegate>
@property RPPreviewViewController* previewViewController;
@end


@implementation ReplayKitProxy

+ (ReplayKitProxy *)sharedInstance
{
    static ReplayKitProxy* _instance = nil;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        _instance = [[ReplayKitProxy alloc] init];
    });
    return _instance;
}

+ (BOOL)isSupportReplay
{
    NSString* version = [[UIDevice currentDevice] systemVersion];
    
    BOOL _ios90orNewer = [version compare: @"9.0" options: NSNumericSearch] != NSOrderedAscending;
    
    return _ios90orNewer;
}

// 開始錄製視頻
- (void)startRecording
{
    RPScreenRecorder* recorder = RPScreenRecorder.sharedRecorder;
    
    if (recorder.available == FALSE) {
        NSLog(@"Replaykit is not available");
        return;
    }
    
    if (recorder.recording == TRUE) {
        NSLog(@"Replaykit is recording");
        return;
    }
    
    // 添加代理:防止有些設備錄製出來黑屏
    recorder.delegate = self;
    
    [recorder startRecordingWithMicrophoneEnabled:YES handler:^(NSError * _Nullable error) {
        if (error) {
            NSLog(@"%@", error.localizedDescription);
        }
    }];
}

// 停止錄製視頻
- (void)stopRecording
{
    RPScreenRecorder* recorder = RPScreenRecorder.sharedRecorder;
    if (recorder.recording == FALSE) {
        return;
    }
    
    [recorder stopRecordingWithHandler:^(RPPreviewViewController * _Nullable previewViewController, NSError * _Nullable error) {
        if (error) {
            NSLog(@"%@", error.localizedDescription);
            // [self ShowRecordAlert:error.localizedDescription];
            return;
        } else {
            if (previewViewController != NULL) {
                previewViewController.previewControllerDelegate = self;
                self.previewViewController = previewViewController;
            }
        }
    }];
}

// 刪除已錄製視頻，必須在stopRecording之後調用
// eg.離開視頻分享界面
- (void)discardRecording
{
    RPScreenRecorder* recorder = RPScreenRecorder.sharedRecorder;
    if (recorder.recording == TRUE) {
        return;
    }
    
    [recorder discardRecordingWithHandler:^{
        NSLog(@"discardRecording complete");
        self.previewViewController = NULL;
    }];
}

// 顯示視頻
- (void)displayRecordingContent
{
    UIViewController* rootViewController = [UIApplication sharedApplication].keyWindow.rootViewController;
    [rootViewController presentViewController:self.previewViewController animated:YES completion:^{
        NSLog(@"DIsplay complete!");
    }];
}

// MARK: delegate RPPreviewViewControllerDelegate
- (void)previewControllerDidFinish:(RPPreviewViewController*)previewController
{
    if (previewController != NULL) {
        [previewController dismissViewControllerAnimated:YES completion:^{
            
        }];
    }
}

// MARK: RPScreenRecorderDelegate
- (void)screenRecorder:(RPScreenRecorder *)screenRecorder didStopRecordingWithError:(NSError *)error previewViewController:(nullable RPPreviewViewController *)previewViewController
{
    // Display the error the user to alert them that the recording failed.
//    showScreenRecordingAlert(error.localizedDescription)
    
    /// Hold onto a reference of the `previewViewController` if not nil.
    if (previewViewController != NULL) {
        self.previewViewController = previewViewController;
    }
}

@end

# 注意點: ReplayKit.framework必須ios9.0以上才支持，所以需要將framework的屬性設置爲Optional，否則在9.0以下手機上會報錯