如何在运行应用程序时使其在每次启动时都干净启动？

Question

This is my onCreate in MainActivity.java

@Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);        
        startTime = SystemClock.uptimeMillis();
        serverChecksThread.start();
        status1 = (TextView) findViewById(R.id.textView3);
        timerValue = (TextView) findViewById(R.id.timerValue);
        uploadedfilescount = (TextView) findViewById(R.id.numberofuploadedFiles);
        uploadedfilescount.setText("Uploaded Files: 0");

        addListenerOnButton();
        initTTS();
    }

initTTS is for using text to speech.

public void initTTS() {
        Intent checkIntent = new Intent();
        checkIntent.setAction(TextToSpeech.Engine.ACTION_CHECK_TTS_DATA);
        startActivityForResult(checkIntent, MY_DATA_CHECK_CODE);
    }

The problem is that when i'm running over and over again the application through android-studio the app start clean/reseted. But when i'm running the application over and over again on my android device in this case lg g3 i click on the app icon so each time it remember the last action sometimes it's just a TextView text that changed or sometimes the text to speech so sometimes i see the changed text and sometimes i hear the last voice speeched. Like it's remembering the last actions.

I tried an hour ago to add this to my MainActivitiy.java

public void onResume() {
        super.onResume();
        startActivity(new Intent(this, MainScree.class).addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY).addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP));
    }

But MainScreen not exist so i'm not sure what should i add instead of it. And also i'm not sure if this is the right way to do it at all.

Answer 1

What you are suggesting is not user friendly nor the "android way" when pressing the home button the App moves from Resumed(visible) to paused(partially visible) until android needs the memory/resources for another app then moves to Stopped and destroyed .

we can always use

 @Override
    public void onPuase() {
        finish();
    }

but this will cause you a lot of problems in the app flow later on .

editted :: to achive the data cleaning without missing with flow

Add this to your manifest file to the actvity that you want to be cleared every time : android:noHistory="true"
and override your on back press :

@Override public void onBackPressed() { super.onBackPressed(); finish(); }