在 React Native App 中禁用屏幕 Capture/ScreenShot

Question

我遇到了一些针对 ios 和 Android 的解决方案，以防止屏幕捕获和截屏。但是如何在 React Native 中禁用屏幕捕获？

Answer 1

防止截屏

Android

通过 setFlag secure 防止捕获屏幕

getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE);

如果你想删除安全标志

getWindow().clearFlags(WindowManager.LayoutParams.FLAG_SECURE);

Answer 2

Android

里面/android/app/src/main/java/com/{Project_Name}/MainActivity.java

您可以添加以下行。通过 setFlag FLAG_SECURE 防止截屏，以下面的代码为例：

import android.os.Bundle;
import android.view.WindowManager;

...

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE);
}

稍后当您想要删除安全标志时

getWindow().clearFlags(WindowManager.LayoutParams.FLAG_SECURE);

iOS

在AppDelegate.m中叠加屏幕，举个例子：

- (void)applicationWillResignActive:(UIApplication *)application {    
    // fill screen with our own colour
    UIView *colourView = [[UIView alloc]initWithFrame:self.window.frame];
    colourView.backgroundColor = [UIColor whiteColor];
    colourView.tag = 1234;
    colourView.alpha = 0;
    [self.window addSubview:colourView];
    [self.window bringSubviewToFront:colourView];
    // fade in the view
    [UIView animateWithDuration:0.5 animations:^{
        colourView.alpha = 1;
    }];
}

- (void)applicationDidBecomeActive:(UIApplication *)application {
    // grab a reference to our coloured view
    UIView *colourView = [self.window viewWithTag:1234];
    // fade away colour view from main view
    [UIView animateWithDuration:0.5 animations:^{
        colourView.alpha = 0;
    } completion:^(BOOL finished) {
        // remove when finished fading
        [colourView removeFromSuperview];
    }];
}

Answer 3

在android

/android/app/src/main/java/com/{Project_Name}/MainActivity.java

写一些导入语句

import android.os.Bundle;
import android.view.WindowManager;

通过 MainActivity 中代码下方的 setFlag 安全使用来防止捕获屏幕 class

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE);
    }

Answer 4

所以在 React Native 平台上构建 iOS 方面的工作很少。所以请耐心看完下面的做法

我正在使用 react-native-video 包来播放媒体。如果用户启用了屏幕录制，我的要求是显示微调器。

从https://developer.apple.com/documentation/uikit/uiscreen/2921651-captured?language=objc了解到captured属性设置为YES。我在 AppDelegate.m 中添加了观察者，在 didFinishLaunchingWithOptions 方法下。

[[UIScreen mainScreen] addObserver:self forKeyPath:@"captured" options:NSKeyValueObservingOptionNew context:nil];
由于 RN 允许与 Native 模块通信，我决定添加网桥以便在 capture 标志设置为 YES 时通知。

我创建了两个文件 ScreenRecordingNotification.h 和 .m

.h

#import <React/RCTBridgeModule.h>
#import <React/RCTEventEmitter.h>
#ifndef ScreenCaptureNotification_h
#define ScreenCaptureNotification_h


@interface ScreenCaptureNotification : RCTEventEmitter <RCTBridgeModule>
-(void) isScreenCaptureEnabled:(BOOL)isCaptured;
@end

#endif /* ScreenCaptureNotification_h */

.m 看起来像

#import <Foundation/Foundation.h>
#import "ScreenCaptureNotification.h"
#import <React/RCTLog.h>
@implementation ScreenCaptureNotification

+ (id)allocWithZone:(NSZone *)zone {
  static ScreenCaptureNotification *sharedInstance = nil;
  static dispatch_once_t onceToken;
  dispatch_once(&onceToken, ^{
    sharedInstance = [super allocWithZone:zone];
  });
  return sharedInstance;
}

RCT_EXPORT_MODULE();

- (NSArray<NSString *> *)supportedEvents {
  return @[           
           @"isScreenCaptureEnabled"];
}

-(void) isScreenCaptureEnabled:(BOOL)isCaptured {
  [self sendEventWithName:@"isScreenCaptureEnabled" body:@{@"value": @(isCaptured)}];
}

@end

在 AppDelegate 中导入 #import "ScreenCaptureNotification.h" 并添加以下方法。

- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {
    if ([keyPath isEqualToString:@"captured"]){
      NSLog(@"Screen Capture is Enabled");
      RCTLog(@"Screen Capture is Enabled");
      if (@available(iOS 11.0, *)) {
        ScreenCaptureNotification *manager = [ScreenCaptureNotification allocWithZone: nil];
        [manager isScreenCaptureEnabled:UIScreen.mainScreen.isCaptured];
      }
    }
}

并在didFinishLaunchingWithOptions中添加[[UIScreen mainScreen] addObserver:self forKeyPath:@"captured" options:NSKeyValueObservingOptionNew context:nil];。 iOS 侧的更改到此结束。

现在您需要在 .js 文件中添加 Listener 以通知 iOS 发送。收到通知后，您可以决定如何处理它。大致如下所示。

  addListener() {  
    let bridge = new NativeEventEmitter(NativeModules.ScreenCaptureNotification);

    this.screenCaptureEnabled = bridge.addListener("isScreenCaptureEnabled",res => { 
      this.setState({ screenCapture: true })
    })
  }

和

render() {
  if (this.state.screenCapture) {
     //Show spinner
     return <Spinner />
  }
  return (
  <Vido uri ... /> 
  )
}

我愿意接受对此 post 进行更改的建议。如果post对您有帮助，别忘了点个赞。

Answer 5

在下面的 appDelegate.m 中添加此行 didFinishLaunchingWithOptions 当用户正在录制屏幕时退出应用程序并且如果正在录制屏幕则应用程序未打开 仅用于 ios react-native

Answer 6

您的应用中的屏幕截图错误把这个完整的代码放在你的

android/app/src/main/javacom/mainactivity/java

package com.Yourprojectname;
import com.facebook.react.ReactActivity;
import android.os.Bundle;
import android.view.WindowManager;


public class MainActivity extends ReactActivity {
  @Override
  protected String getMainComponentName() {
    return "YOUR PROJECT NAME";
  }
   
  @Override
  protected void onCreate(Bundle savedInstanceState) {

  super.onCreate(savedInstanceState);
  getWindow().setFlags(
    WindowManager.LayoutParams.FLAG_SECURE,
    WindowManager.LayoutParams.FLAG_SECURE
  );}}

在 React Native App 中禁用屏幕 Capture/ScreenShot

Disable Screen Capture/ScreenShot in React Native App

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ios

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