线程中断替代？(Thread interrupt alternatives?)

 使用SOS模式构建Flashlight应用程序。 有3个按钮（开，关和SOS）。 应用程序在正常的开启和关闭模式下工作，但在SOS模式下不工作。（SOS模式不关闭） 
 
//this method gets called when Off button is pressed
    private void turnOffFlash() {
            if (FlashOn) {
                if (myCamera == null || myParameters == null) {
                    return;
                }
                myParameters = myCamera.getParameters();
                myParameters.setFlashMode(Parameters.FLASH_MODE_OFF);
                myCamera.setParameters(myParameters);
                myCamera.stopPreview();
                try {
                    if (SOSon)
                        Flashthread.interrupt();
                    SOSon = false;
                } catch (Exception ex) {
                    throw ex;
                }
                FlashOn = false;
                number_of_press=0;
            }
        }
 
 这里使用Flashthread 
 
void onSOSPress() {
        if (number_of_press == 1) {
            try {
                SOSon = true;
                if (!Flashthread.isInterrupted()) {
                    if (SOSon) {
                        Flashthread = new Thread(new Runnable() {
                            @Override
                            public void run() {
                                for (int i = 0; i < System.currentTimeMillis(); i++) {
                                    if (FlashOn) {
                                        myParameters.setFlashMode(Parameters.FLASH_MODE_OFF);
                                        myCamera.setParameters(myParameters);
                                        FlashOn = false;
                                    } else {
                                        TurnOnFlash();
                                    }
                                    try {
                                        Thread.sleep(1000);
                                    } catch (InterruptedException e) {
                                        e.printStackTrace();
                                    }

                                }
                            }
                        });
                        Flashthread.start();
                    }
                } else
                    Flashthread.resume();
            } catch (Exception ex) {
                throw ex;
            }
        }
    }
 
 在turnOffFlash方法中，由于我读到中断方法并没有真正“中断”/杀死线程，我可以使用什么而不是Thread.Interrupt(); 按下Off按钮是否会停止SOS模式？ 我尝试了stop()和destroy()但两者都崩溃了应用程序。 

Building a Flashlight App with SOS mode. Has 3 buttons( On, Off and SOS). App works in normal On and Off mode but not in SOS mode.(SOS mode doesnt switch off)
 
//this method gets called when Off button is pressed
    private void turnOffFlash() {
            if (FlashOn) {
                if (myCamera == null || myParameters == null) {
                    return;
                }
                myParameters = myCamera.getParameters();
                myParameters.setFlashMode(Parameters.FLASH_MODE_OFF);
                myCamera.setParameters(myParameters);
                myCamera.stopPreview();
                try {
                    if (SOSon)
                        Flashthread.interrupt();
                    SOSon = false;
                } catch (Exception ex) {
                    throw ex;
                }
                FlashOn = false;
                number_of_press=0;
            }
        }
 
and the Flashthreadis used here
 
void onSOSPress() {
        if (number_of_press == 1) {
            try {
                SOSon = true;
                if (!Flashthread.isInterrupted()) {
                    if (SOSon) {
                        Flashthread = new Thread(new Runnable() {
                            @Override
                            public void run() {
                                for (int i = 0; i < System.currentTimeMillis(); i++) {
                                    if (FlashOn) {
                                        myParameters.setFlashMode(Parameters.FLASH_MODE_OFF);
                                        myCamera.setParameters(myParameters);
                                        FlashOn = false;
                                    } else {
                                        TurnOnFlash();
                                    }
                                    try {
                                        Thread.sleep(1000);
                                    } catch (InterruptedException e) {
                                        e.printStackTrace();
                                    }

                                }
                            }
                        });
                        Flashthread.start();
                    }
                } else
                    Flashthread.resume();
            } catch (Exception ex) {
                throw ex;
            }
        }
    }
 
In the turnOffFlash method,since I read that the Interrupt method doesn't really "interrupt"/kill the thread,what can I use instead of Thread.Interrupt(); so that pressing the Off button stops the SOS mode? I tried the stop() and destroy() but both crashed the app.

原文：https://stackoverflow.com/questions/39055659