unlock | 易学教程

Deleting locked files with Java?

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问题 We have to delete some directories and their contents using Java running on Windows. I was worried about running into the directory files being locked. We could just invoke Unlocker to do the delete. Or is there a more Java centric way to handle this situation? 回答1: Java has a very simplistic access to the file system. You can't do this without using some native libraries. 来源： https://stackoverflow.com/questions/2885406/deleting-locked-files-with-java

java内存模型

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由于计算机的内存与处理器的运算能力之间有几个数量级的差距，所以现代计算机系统都不得不加入一层读写速度尽可能接近处理器运算速度的高速缓存（cache）来作为内存与处理器之间的缓冲：将运算需要使用到的数据从主内存复制到高速缓存中，让运算能快速进行，当运算结束后再从缓存同步回内存之中。　　基于高速缓存的存储交互很好地解决了处理器与内存的速度矛盾，但是引入了一个新的问题：缓存一致性问题（Cache Coherence）。在多处理器系统中，每个处理器都有自己的高速缓存，而他们又共享同一主存。 Java内存模型（并发编程）主内存与工作内存　 Java内存模型中规定了所有的变量都存储在主内存中，每条线程还有自己的工作内存（可以与前面将的处理器的高速缓存类比），线程的工作内存中保存了该线程使用到的变量到主内存副本拷贝，线程对变量的所有操作（读取、赋值）都必须在工作内存中进行，而不能直接读写主内存中的变量。不同线程之间无法直接访问对方工作内存中的变量，线程间变量值的传递均需要在主内存来完成。　关于主内存与工作内存之间的具体交互协议，即一个变量如何从主内存拷贝到工作内存、如何从工作内存同步到主内存之间的实现细节，Java内存模型定义了以下八种操作来完成： lock（锁定）：作用于主内存的变量，把一个变量标识为一条线程独占状态。 unlock（解锁）：作用于主内存变量

AutoUnlock a Windows User Session

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问题 Recently, I have been working on a CredentialProvider in order to unlock automatically (the trigger can be any event, so let’s say the end of a timer) a Windows Vista (or more recent version) user session. For that I read some useful articles on the subject, the change between GINA and this new architecture. http://msdn.microsoft.com/en-us/magazine/cc163489.aspx. I think, like everyone in the process of creating a custom CredentialProvider, I didn’t start from scratch but from the sample code

How does the NSCondition work?

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问题 I'm using NSCondition class in this sence: - (void) method1 { [[cocoaCondition lock] lock]; while (!someCheckIsTrue) { [cocoaCondition wait]; } // Do something. [cocoaCondition unlock]; } - (void) method2 { [cocoaCondition lock]; // Do something. someCheckIsTrue = YES; [cocoaCondition signal]; [cocoaCondition unlock]; } I have two threads, thread1 runs the method1 and thread2 runs the method2. I hope that when [cocoaCondition wait] is called, the thread1 will be blocked. Then when the thread2

Is there a way to unlock android phone via adb, if I KNOW the pattern

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问题 Basically, idea is to add a pattern unlock in script, running on a computer, connected to phone via adb. So, something like adb shell input events. Pattern is KNOWN, no hacking. 回答1: This is an old question but in the interest of helping anyone who finds this post, check out my android-pattern-unlock shell script. It uses ADB's sendevent to draw a known unlock pattern into the lock screen. Worked for me and allowed me to gain access with a broken screen. 回答2: I tried Matt Wilson's android

Slide Unlocker ImageView ViewFlipper

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问题 I want to develop an unlocker. You can unlock by sliding to the right (just like on the iPhone). Wich is the best method to implement this? Should I use a ViewFlipper and a GestureDetector? I have already tried this, but I could slide anywhere on the screen to unlock. The ImageView of the ViewFlipper should slide with my finger and only if my finger is directly on the imageView. 回答1: Try looking at this question for gestures on images, or any view for that matter. 来源： https://stackoverflow

Slide Unlocker ImageView ViewFlipper

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How to Prompt User to Enter Pin in Android Lock Screen?

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问题 Android screen lock/ unlock programmatically and How to lock/unlock phone programmatically : Android and many questions i have searched for answer but i didn't got the exact answer for my usage. I would like to get a enter credentials or Enter pin page in Lock Screen Default System Lock Screen. When we say Ok Google the Google will prompt to enter the credentials . I need the same time. I m asking just to wipe out screen and enter credentials Give me the answer which would for All android

How to Prompt User to Enter Pin in Android Lock Screen?

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Android check if lockscreen is set

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问题 i need to check if the lockscreen does have a Pin or something more secure (Password, Fingerprint etc.). Im able to check if there is a Pin, Password or a Pattern. KeyguardManager keyguardManager = (KeyguardManager) context.getSystemService(Context.KEYGUARD_SERVICE); return keyguardManager.isKeyguardSecure(); My Problem is that i cant detect if the lockscreen is a Pattern or something lower. I tried this: int lockPatternEnable = Settings.Secure.getInt(cr, Settings.Secure.LOCK_PATTERN_ENABLED)