如何在使用警报对话框时保持进程正常工作？

分类：编程问答

如何解决如何在使用警报对话框时保持进程正常工作？

我有一个方法，当我单击开始按钮两次时调用该方法，此操作调用该方法，然后弹出警告消息或对话框，询问用户他/她是要退出还是继续。退出部分正在工作，但是当我说 No 时，正在使用的倒数计时器进程停止了。如何弹出警报消息，但即使出现警报消息或单击“否”也能保持倒数计时器正常工作？

    private void AlertMessage()
{
    AlertDialog alertDialog = new AlertDialog.Builder(this)
//set icon
            .setIcon(android.R.drawable.ic_dialog_alert)
//set title
            .setTitle("YOU ARE ABOUT TO EXIT!!!")
//set message
            .setMessage("Exiting will cancel this process")
//set positive button
            .setPositiveButton("Yes",new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialogInterface,int i) {
                    //set what would happen when positive button is clicked
                    //RESETTING FIRST THEN RETURN TO MAIN MENU
                    ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
                    if (Build.VERSION.SDK_INT >= 11)
                    {
                        recreate();
                        pb.setProgress(0);
                        pb2.setProgress(0);
                        pb3.setProgress(0);
                        Toast.makeText(tool1mode1.this,"Reset",Toast.LENGTH_SHORT).show();
                    }
                    else
                    {
                        Intent intent = getIntent();
                        intent.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
                        finish();
                        overridePendingTransition(0,0);

                        startActivity(intent);
                        overridePendingTransition(R.anim.slide_in_right,R.anim.slide_out_left);
                    }
                    //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
                    Intent goingback = new Intent(tool1mode1.this,Settings.class);
                    tool1mode1.this.finish();
                    startActivity(goingback);
                    overridePendingTransition(R.anim.slide_in_left,R.anim.slide_out_right);
                }
            })
//set negative button
            .setNegativeButton("No",int i) {
                    //set what should happen when negative button is clicked
                    Toast.makeText(getApplicationContext(),"Nothing Happened",Toast.LENGTH_LONG).show();
                    
                }
            })
            .show();
}

这是我通过按钮使用它时：

newbtn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            clicked = clicked + 1;
            startTimer();
            //Check flow rate
            if(num == 450)
            {
                try {
                    flow.setText(String.valueOf(num));
                    progressBar.setIndeterminateDrawable(Circle);
                    progressBar.setVisibility(View.VISIBLE);
                } catch (NullPointerException e) {
                    e.printStackTrace();
                }
            }
            else if(num == 150)
            {
                try {
                    flow.setText(String.valueOf(num));
                    progressBar.setIndeterminateDrawable(Circle);
                    progressBar.setVisibility(View.VISIBLE);
                } catch (NullPointerException e) {
                    e.printStackTrace();
                }

            }

            if(clicked > 1)
            {
                AlertMessage();

            }

        }
    });

定时器方法：

    private void startTimer() {
        Log.println(Log.ASSERT,"CHECK","Entered startTimer() method");
        millisInFuture = mTimeLeftInMillis;
        mCountDownTimer = new CountDownTimer(mTimeLeftInMillis,1000) {
            @Override
            public void onTick(long millisUntilFinished) {
                mTimeLeftInMillis = millisUntilFinished;
                updateCountDownText();
                millisPassed = millisInFuture - mTimeLeftInMillis;
                progress = (int) (millisPassed * 100 / millisInFuture);
                pb.setProgress(progress);
                pb2.setProgress(0);
                pb3.setProgress(0);


/////////////////////////////////////////////////////////////////////////////////////////////////////////////////
                //Key: 60 sec
                if (millisInFuture == 480000) {
                    if (millisPassed <= 60000 || (millisPassed > 180000 && millisPassed <= 240000) || (millisPassed > 300000 && millisPassed <= 360000 || (millisPassed > 420000 && millisPassed <= 480000))) {
//                        Animation animation = AnimationUtils.loadAnimation(tool1mode1.this,R.anim.fade_in);
//                        stepupimage.setAnimation(animation);

                        Log.println(Log.ASSERT,"Check that the first if statement of key 60 is entered");
                        statusIfUp();
                        time_of_stage = (millisInFuture - millisPassed) % 60000;
                        progress2 = (int) (time_of_stage*100 / 60000);
                        Log.println(Log.VERBOSE,"TIME OF STAGE = "+time_of_stage);
                        Log.println(Log.VERBOSE,"progress2= "+progress2);
                        pb2.setProgress(progress2);
                        updateStageUpCount();
                        upArrowAnimation();

                        setflowrate();

                    } else if ((millisPassed > 60000 && millisPassed <= 180000)) {
//                        Animation animation = AnimationUtils.loadAnimation(tool1mode1.this,R.anim.fade_in);
//                        stepdownimage.setAnimation(animation);

                        Log.println(Log.ASSERT,"Check that the second if statement of key 60 is entered");
                        statusIfDown();

                        time_of_stage = (millisInFuture - (millisPassed+60000)) % 120000;    //CREDIT GOES TO BASHMOHNDES AMIN
                        progress3 = (int) (time_of_stage*100 / 120000);
                        Log.println(Log.VERBOSE,"progress3= "+progress3);
                        pb3.setProgress(progress3);
                        updateStageDownCount();
                        downArrowAnimation();

                        setFlowratetozero();

                    } else if ((millisPassed > 240000 && millisPassed <= 300000) || (millisPassed > 360000 && millisPassed <= 420000)){
//                        Animation animation = AnimationUtils.loadAnimation(tool1mode1.this,"Check that the first if statement of key 60 is entered");
                        statusIfDown();

                        time_of_stage = (millisInFuture - millisPassed) % 60000;
                        progress3 = (int) (time_of_stage*100 / 60000);
                        Log.println(Log.VERBOSE,"progress3= "+progress3);
                        pb3.setProgress(progress3);
                        updateStageDownCount();
                        downArrowAnimation();

                        setFlowratetozero();
                    }

                }
                //key:90 sec ----> 01:30
                else if (millisInFuture == 720000) {
                    if ((millisPassed <= 90000) || (millisPassed > 270000 && millisPassed <= 360000)
                            || (millisPassed > 450000 && millisPassed <= 540000)
                            || (millisPassed > 630000 && millisPassed <= 720000)) {
//                        Animation animation = AnimationUtils.loadAnimation(tool1mode1.this,R.anim.fade_in);
//                        stepupimage.setAnimation(animation);
                        statusIfUp();
                        time_of_stage = (millisInFuture - millisPassed) % 90000;
                        progress2 = (int) (time_of_stage*100 / 90000);
                        Log.println(Log.VERBOSE,"progress2= "+progress2);
                        pb2.setProgress(progress2);
                        updateStageUpCount();
                        upArrowAnimation();
                        setflowrate();
                    } else if ((millisPassed > 90000 && millisPassed <= 270000)) {
                        statusIfDown();
                        time_of_stage = ((millisInFuture+90000) - millisPassed) % 180000;
                        progress3= (int) (time_of_stage*100 / 180000);
                        Log.println(Log.VERBOSE,"progress3= "+progress3);
                        pb3.setProgress(progress3);
                        updateStageDownCount();
                        downArrowAnimation();
                        setFlowratetozero();

                    } else if ((millisPassed > 360000 && millisPassed <= 450000) || (millisPassed > 540000 && millisPassed <= 630000)) {
//                        Animation animation = AnimationUtils.loadAnimation(tool1mode1.this,R.anim.fade_in);
//                        stepdownimage.setAnimation(animation);
                        statusIfDown();
                        time_of_stage = (millisInFuture - millisPassed) % 90000;
                        progress3= (int) (time_of_stage*100 / 90000);
                        Log.println(Log.VERBOSE,"progress3= "+progress3);
                        pb3.setProgress(progress3);
                        updateStageDownCount();
                        downArrowAnimation();
                        setFlowratetozero();
                    }
                }
                //key:120 sec ----> 02:00
                else if (millisInFuture == 960000) {
                    if (millisPassed <= 120000 || millisPassed > 360000 && millisPassed <= 480000 || millisPassed > 600000 && millisPassed <= 720000 || millisPassed > 840000 && millisPassed <= 960000) {
                        statusIfUp();
                        time_of_stage = (millisInFuture - millisPassed) % 120000;
                        progress2 = (int) (time_of_stage*100 / 120000);
                        Log.println(Log.VERBOSE,"progress2= "+progress2);
                        pb2.setProgress(progress2);
                        updateStageUpCount();
                        upArrowAnimation();
                        setflowrate();

                    } else if (millisPassed > 120000 && millisPassed <= 360000) {
                        statusIfDown();
                        time_of_stage = ((millisInFuture+120000) - millisPassed) % 240000;
                        progress3= (int) (time_of_stage*100 / 240000);
                        Log.println(Log.VERBOSE,"progress3= "+progress3);
                        pb3.setProgress(progress3);
                        updateStageDownCount();
                        downArrowAnimation();
                        setFlowratetozero();
                    }  else if (millisPassed > 480000 && millisPassed <= 600000 || millisPassed > 720000 && millisPassed <= 840000) {
                        statusIfDown();
                        time_of_stage = (millisInFuture - millisPassed) % 120000;
                        progress3= (int) (time_of_stage*100 / 120000);
                        Log.println(Log.VERBOSE,"progress3= "+progress3);
                        pb3.setProgress(progress3);
                        updateStageDownCount();
                        downArrowAnimation();
                        setFlowratetozero();
                    }
                }
                //key:20 sec ----> 00:20
                else if (millisInFuture == 160000) {
                    if (millisPassed <= 20000 || millisPassed > 60000 && millisPassed <= 80000 || millisPassed > 100000 && millisPassed <= 120000 || millisPassed > 140000 && millisPassed <= 160000) {
                        statusIfUp();
                        time_of_stage = (millisInFuture - millisPassed) % 20000;
                        progress2 = (int) (time_of_stage*100 / 20000);
                        Log.println(Log.VERBOSE,"progress2= "+progress2);
                        pb2.setProgress(progress2);
                        updateStageUpCount();
                        upArrowAnimation();

                        setflowrate();
                    } else if (millisPassed > 20000 && millisPassed <= 60000) {
                        statusIfDown();
                        time_of_stage = ((millisInFuture+20000) - millisPassed) % 40000;
                        progress3 = (int) (time_of_stage*100 / 40000);
                        Log.println(Log.VERBOSE,"progress2= "+progress3);
                        pb3.setProgress(progress3);
                        updateStageDownCount();
                        downArrowAnimation();

                        setFlowratetozero();
                    } else if (millisPassed > 80000 && millisPassed <= 100000 || millisPassed > 120000 && millisPassed <= 140000) {
                        statusIfDown();
                        time_of_stage = (millisInFuture - millisPassed) % 20000;
                        progress3 = (int) (time_of_stage*100 / 20000);
                        Log.println(Log.VERBOSE,"progress3= "+progress3);
                        pb3.setProgress(progress3);
                        updateStageDownCount();
                        downArrowAnimation();

                        setFlowratetozero();
                    }
                }
                //key:30 sec ----> 00:30
                else if (millisInFuture == 240000) {
                    if (millisPassed <= 30000 || millisPassed > 90000 && millisPassed <= 120000 || millisPassed > 150000 && millisPassed <= 180000 || millisPassed > 210000 && millisPassed <= 240000) {
                        statusIfUp();
                        time_of_stage = (millisInFuture - millisPassed) % 30000;
                        progress2 = (int) (time_of_stage*100 / 30000);
                        Log.println(Log.VERBOSE,"progress2= "+progress2);
                        pb2.setProgress(progress2);
                        updateStageUpCount();
                        upArrowAnimation();
                        setflowrate();
                    } else if (millisPassed > 30000 && millisPassed <= 90000) {
                        statusIfDown();
                        time_of_stage = ((millisInFuture + 30000) - millisPassed) % 60000;
                        progress3 = (int) (time_of_stage*100 / 60000);
                        Log.println(Log.VERBOSE,"progress3= "+progress3);
                        pb3.setProgress(progress3);
                        updateStageDownCount();
                        downArrowAnimation();
                        setFlowratetozero();
                    } else if (millisPassed > 120000 && millisPassed <= 150000 || millisPassed > 180000 && millisPassed <= 210000) {
                        statusIfDown();
                        time_of_stage = (millisInFuture - millisPassed) % 30000;
                        progress3 = (int) (time_of_stage*100 / 30000);
                        Log.println(Log.VERBOSE,"progress3= "+progress3);
                        pb3.setProgress(progress3);
                        updateStageDownCount();
                        downArrowAnimation();
                        setFlowratetozero();
                    }
                }
                //key:60 sec ----> 01:00
                else if (millisInFuture == 480000) {
                    if (millisPassed <= 60000 || (millisPassed > 180000 && millisPassed <= 240000) || (millisPassed > 300000 && millisPassed <= 360000 || (millisPassed > 420000 && millisPassed <= 480000))) {
                        statusIfUp();
                        time_of_stage = (millisInFuture - millisPassed) % 60000;
                        progress2 = (int) (time_of_stage*100 / 60000);
                        Log.println(Log.VERBOSE,"progress2= "+progress2);
                        pb2.setProgress(progress2);
                        upArrowAnimation();
                        setflowrate();

                    } else if ((millisPassed > 60000 && millisPassed <= 180000)) {
                        statusIfDown();
                        time_of_stage = (millisInFuture - (millisPassed+60000)) % 120000;    //CREDIT GOES TO BASHMOHNDES AMIN
                        progress3 = (int) (time_of_stage*100 / 120000);
                        Log.println(Log.VERBOSE,"progress3= "+progress3);
                        pb3.setProgress(progress3);
                        updateStageDownCount();
                        downArrowAnimation();
                        setFlowratetozero();

                    } else if ((millisPassed > 240000 && millisPassed <= 300000) || (millisPassed > 360000 && millisPassed <= 420000)){
                        statusIfDown();
                        time_of_stage = (millisInFuture - millisPassed) % 60000;    //CREDIT GOES TO BASHMOHNDES AMIN
                        progress3 = (int) (time_of_stage*100 / 60000);
                        Log.println(Log.VERBOSE,"progress3= "+progress3);
                        pb3.setProgress(progress3);
                        updateStageDownCount();
                        downArrowAnimation();
                        setflowrate();

                    }

                }

            }

            @Override
            public void onFinish() {
                Toast.makeText(tool1mode1.this,"Done",Toast.LENGTH_SHORT).show();
                avd2.stop(); avd3.stop();
                try {
                    pb.setProgress(100); pb2.setProgress(0); pb3.setProgress(0);
                    stage_timer.setVisibility(View.INVISIBLE);
                    stage_timer.setVisibility(View.INVISIBLE);
                    progressBar.setVisibility(View.INVISIBLE);
                    progressBar2.setVisibility(View.INVISIBLE);
                    progressBar.setProgress(0);
                    progressBar2.setProgress(0);
                    progressBar.setTranslationY(60);
                    progressBar2.setTranslationY(60);
                    flow.setTranslationY(60);
                    animation1.cancel(); animation2.cancel();

                    Intent stoppump = new Intent(tool1mode1.this,stop_pump.class);
                    startActivity(stoppump);
                    //Vibration
                    if (Build.VERSION.SDK_INT >= 26) {
                        ((Vibrator) getSystemService(VIBRATOR_SERVICE)).vibrate(VibrationEffect.createOneShot(150,VibrationEffect.DEFAULT_AMPLITUDE));
                    } else {
                        ((Vibrator) getSystemService(VIBRATOR_SERVICE)).vibrate(VibrationEffect.createWaveform(new long[]{150},new int[]{VibrationEffect.EFFECT_CLICK},-1));
                    }
                }
                catch (NullPointerException e) {
                    e.printStackTrace();
                }

            }
        }.start();

    }

编辑：

我有另一个计时器，我用它在大计数器内的某些时间间隔内倒计时，另一个计时器似乎在我弹出警报对话框以及我拥有的任何其他动画时停止工作，只有大计数器继续工作。

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