android - 如何完全结束或终止android中的活动并过渡到另一个活动？
问题描述
我知道这个问题被问了好几次，但我似乎无法让它与所提供的任何答案一起工作。我只想单击一个按钮来结束我当前正在进行的活动并转到另一个活动。我也想从后台堆栈中删除它，所以我在警报对话框中执行了以下操作：
private void AlertMessage()
{
AlertDialog alertDialog = new AlertDialog.Builder(this, android.R.style.Widget_Material_ButtonBar_AlertDialog)
//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 >= 26)
{
// recreate();
// pb.setProgress(0);
Toast.makeText(tool1mode1.this, "Exit", Toast.LENGTH_SHORT).show();
Intent goingback = new Intent(tool1mode1.this, Settings.class);
goingback.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_NO_HISTORY);
finishAffinity();
tool1mode1.this.finish();
overridePendingTransition(R.anim.slide_in_left, R.anim.slide_out_right);
startActivity(goingback);
}
}
})
//set negative button
.setNegativeButton("No", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
//set what should happen when negative button is clicked
Toast.makeText(getApplicationContext(),"Cancelled",Toast.LENGTH_LONG).show();
}
})
.show();
}
然而，当我认为我结束了我参加的活动后，我确实去参加了另一项活动时，我仍然从应该结束的活动中得到东西。我有振动和 Toast 消息，这些消息在我参与的活动中被触发，即使它应该已经结束，它们也会不断出现。
那么我需要做什么呢？顺便说一下，这个应用程序是一个可穿戴应用程序，以防万一它的工作方式与手机不同
所以简而言之，我想一劳永逸地结束活动并将其从后台堆栈中清除。
编辑：关于系统服务，我在倒计时期间会在不同时间触发振动
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","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,"CHECK","TIME OF STAGE = "+time_of_stage);
// Log.println(Log.VERBOSE,"CHECK","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","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,"CHECK","TIME OF STAGE = "+time_of_stage);
// Log.println(Log.VERBOSE,"CHECK","progress3= "+progress3);
// pb3.setProgress(progress3);
updateStageDownCount();
downArrowAnimation();
setFlowratetozero();
} else if ((millisPassed > 240000 && millisPassed <= 300000) || (millisPassed > 360000 && millisPassed <= 420000)){
// Animation animation = AnimationUtils.loadAnimation(tool1mode1.this, R.anim.fade_in);
// stepdownimage.setAnimation(animation);
Log.println(Log.ASSERT,"CHECK","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,"CHECK","TIME OF STAGE = "+time_of_stage);
// Log.println(Log.VERBOSE,"CHECK","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,"CHECK","TIME OF STAGE = "+time_of_stage);
// Log.println(Log.VERBOSE,"CHECK","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,"CHECK","TIME OF STAGE = "+time_of_stage);
Log.println(Log.VERBOSE,"CHECK","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,"CHECK","TIME OF STAGE = "+time_of_stage);
// Log.println(Log.VERBOSE,"CHECK","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,"CHECK","TIME OF STAGE = "+time_of_stage);
// Log.println(Log.VERBOSE,"CHECK","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,"CHECK","TIME OF STAGE = "+time_of_stage);
Log.println(Log.VERBOSE,"CHECK","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,"CHECK","TIME OF STAGE = "+time_of_stage);
// Log.println(Log.VERBOSE,"CHECK","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,"CHECK","TIME OF STAGE = "+time_of_stage);
// Log.println(Log.VERBOSE,"CHECK","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,"CHECK","TIME OF STAGE = "+time_of_stage);
// Log.println(Log.VERBOSE,"CHECK","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,"CHECK","TIME OF STAGE = "+time_of_stage);
// Log.println(Log.VERBOSE,"CHECK","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,"CHECK","TIME OF STAGE = "+time_of_stage);
// Log.println(Log.VERBOSE,"CHECK","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,"CHECK","TIME OF STAGE = "+time_of_stage);
// Log.println(Log.VERBOSE,"CHECK","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,"CHECK","TIME OF STAGE = "+time_of_stage);
// Log.println(Log.VERBOSE,"CHECK","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;
Log.println(Log.VERBOSE,"CHECK","TIME OF STAGE = "+time_of_stage);
upArrowAnimation();
setflowrate();
} else if ((millisPassed > 60000 && millisPassed <= 180000)) {
statusIfDown();
time_of_stage = (millisInFuture - (millisPassed+60000)) % 120000; //CREDIT GOES TO BASHMOHNDES AMIN
Log.println(Log.VERBOSE,"CHECK","TIME OF STAGE = "+time_of_stage);
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
Log.println(Log.VERBOSE,"CHECK","TIME OF STAGE = "+time_of_stage);
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);
rotateLoading.setTranslationY(60);
rotateLoading.stop();
// 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();
这是倒计时结束，另一个是在总时间内的不同阶段：
private void stageSwitchVibration()
{
Toast.makeText(tool1mode1.this, "stage switch", Toast.LENGTH_SHORT).show();
//Vibration
if (Build.VERSION.SDK_INT >= 26) {
((Vibrator) getSystemService(VIBRATOR_SERVICE)).vibrate(VibrationEffect.createOneShot(300, VibrationEffect.DEFAULT_AMPLITUDE));
} else {
((Vibrator) getSystemService(VIBRATOR_SERVICE)).vibrate(VibrationEffect.createWaveform(new long[]{150}, new int[]{VibrationEffect.EFFECT_CLICK}, -1));
}
}
解决方案
您的 mCountDownTimer 是否与您的活动相关联？如果是这样，您可能需要调用mCountDownTimer.cancel();该onDestroy()方法，即：
@Override
protected void onDestroy() {
super.onDestroy();
mCountDownTimer.cancel();
}
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