onBackPressed() finishes my Activity

Question

In my project I have just one Activity that have View. I think that it has two View that switch the View. The first View is my home that has one Button named "play" . when You click play Button in goes to the second View. Second View is my game. And now my problem is that when I want to use onBackPressed() method in the second View, it closes the Activity. and onBackPressed() method do the same in both View. How to handle onBackPressed() method in second View that return to the first View. How to switch the View in onBackPressed()? I am new with Android and now I really confused. any suggestion? or any key word to search to solve my problem.

here is my code:

 public class PTPlayer extends Cocos2dxActivity {

static Splash splash;
public static AppList appList;
static Noti_Queue noti_queue;

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);


    Log.v("----------", "onActivityResult: request: " + requestCode + " result: " + resultCode);

    if (requestCode == PTServicesBridge.RC_SIGN_IN) {
    }
}

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);


    if (splash == null) {
        splash = new Splash(this);
        splash.set_identity("1");
    }


    if (appList == null) {
        appList = new AppList(this);
        appList.set_identity("1");
    }


    if (noti_queue == null) {
        noti_queue = new Noti_Queue(this);
        noti_queue.set_identity("1");
    }


}

@Override
public void onNativeInit() {
    initBridges();
}

private void initBridges() {
    PTStoreBridge.initBridge(this);
    PTServicesBridge.initBridge(this, getString(R.string.app_id));

    if (PTJniHelper.isAdNetworkActive("kChartboost")) {
        PTAdChartboostBridge.initBridge(this);
    }

    if (PTJniHelper.isAdNetworkActive("kRevMob")) {
        PTAdRevMobBridge.initBridge(this);
    }

    if (PTJniHelper.isAdNetworkActive("kAdMob") || PTJniHelper.isAdNetworkActive("kFacebook")) {
        PTAdAdMobBridge.initBridge(this);
    }

    if (PTJniHelper.isAdNetworkActive("kAppLovin")) {
        PTAdAppLovinBridge.initBridge(this);
    }

    if (PTJniHelper.isAdNetworkActive("kLeadBolt")) {
        PTAdLeadBoltBridge.initBridge(this);
    }

    if (PTJniHelper.isAdNetworkActive("kVungle")) {
        PTAdVungleBridge.initBridge(this);
    }

    if (PTJniHelper.isAdNetworkActive("kPlayhaven")) {
        PTAdUpsightBridge.initBridge(this);
    }

    if (PTJniHelper.isAdNetworkActive("kMoPub")) {
        PTAdMoPubBridge.initBridge(this);
    }

    if (PTJniHelper.isAdNetworkActive("kFacebook")) {
        PTAdFacebookBridge.initBridge(this);
    }

    if (PTJniHelper.isAdNetworkActive("kHeyzap")) {
        PTAdHeyzapBridge.initBridge(this);
    }

}

@Override
public Cocos2dxGLSurfaceView onCreateView() {
    Cocos2dxGLSurfaceView glSurfaceView = new Cocos2dxGLSurfaceView(this);
    glSurfaceView.setEGLConfigChooser(8, 8, 8, 0, 0, 0);

    return glSurfaceView;
}

static {
    System.loadLibrary("player");
}

@Override
protected void onResume() {
    super.onResume();
    if (PTJniHelper.isAdNetworkActive("kChartboost")) {
        PTAdChartboostBridge.onResume(this);
    }
}

@Override
protected void onStart() {
    super.onStart();
    if (PTJniHelper.isAdNetworkActive("kChartboost")) {
        PTAdChartboostBridge.onStart(this);
    }
}

@Override
protected void onStop() {
    super.onStop();
    if (PTJniHelper.isAdNetworkActive("kChartboost")) {
        PTAdChartboostBridge.onStop(this);
    }
}

@Override
protected void onDestroy() {
    super.onDestroy();
}


@Override
public void onBackPressed() {
    splash.Display();
    splash = null;
    super.onBackPressed();
}
}

here i think that in my second view:

     public abstract class Cocos2dxActivity extends Activity implements  Cocos2dxHelperListener {
// ===========================================================
// Constants
// ===========================================================

private static final String TAG = Cocos2dxActivity.class.getSimpleName();

// ===========================================================
// Fields
// ===========================================================

private Cocos2dxGLSurfaceView mGLSurfaceView;
private Cocos2dxHandler mHandler;
private static Context sContext = null;

public static Context getContext() {
    return sContext;
}

// ===========================================================
// Constructors
// ===========================================================

@Override
protected void onCreate(final Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    sContext = this;
    this.mHandler = new Cocos2dxHandler(this);

    this.init();

    Cocos2dxHelper.init(this, this);


}

// ===========================================================
// Getter & Setter
// ===========================================================

// ===========================================================
// Methods for/from SuperClass/Interfaces
// ===========================================================

@Override
protected void onResume() {
    super.onResume();

    Cocos2dxHelper.onResume();
    this.mGLSurfaceView.onResume();
}

@Override
protected void onPause() {
    super.onPause();

    Cocos2dxHelper.onPause();
    this.mGLSurfaceView.onPause();
}

@Override
public void showDialog(final String pTitle, final String pMessage) {
    Message msg = new Message();
    msg.what = Cocos2dxHandler.HANDLER_SHOW_DIALOG;
    msg.obj = new Cocos2dxHandler.DialogMessage(pTitle, pMessage);
    this.mHandler.sendMessage(msg);
}

@Override
public void showEditTextDialog(final String pTitle, final String pContent, final int pInputMode, final int pInputFlag, final int pReturnType, final int pMaxLength) { 
    Message msg = new Message();
    msg.what = Cocos2dxHandler.HANDLER_SHOW_EDITBOX_DIALOG;
    msg.obj = new Cocos2dxHandler.EditBoxMessage(pTitle, pContent, pInputMode, pInputFlag, pReturnType, pMaxLength);
    this.mHandler.sendMessage(msg);
}

@Override
public void runOnGLThread(final Runnable pRunnable) {
    this.mGLSurfaceView.queueEvent(pRunnable);
}

// ===========================================================
// Methods
// ===========================================================
public void init() {

    // FrameLayout
    ViewGroup.LayoutParams framelayout_params =
        new ViewGroup.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT,
                                   ViewGroup.LayoutParams.FILL_PARENT);
    FrameLayout framelayout = new FrameLayout(this);
    framelayout.setLayoutParams(framelayout_params);

    // Cocos2dxEditText layout
    ViewGroup.LayoutParams edittext_layout_params =
        new ViewGroup.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT,
                                   ViewGroup.LayoutParams.WRAP_CONTENT);




    this.mGLSurfaceView = this.onCreateView();



    // Switch to supported OpenGL (ARGB888) mode on emulator
    if (isAndroidEmulator())
       this.mGLSurfaceView.setEGLConfigChooser(8 , 8, 8, 8, 16, 0);

    this.mGLSurfaceView.setCocos2dxRenderer(new Cocos2dxRenderer());


            RelativeLayout relativeLayout = new           RelativeLayout(getApplicationContext());
    RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.MATCH_PARENT);
    params.addRule(RelativeLayout.ALIGN_PARENT_TOP);
    relativeLayout.setLayoutParams(params);

    //AdView adad = new AdView(this);
    ClickBanner_CLickYab_Holder adad = new ClickBanner_CLickYab_Holder(this);
    RelativeLayout.LayoutParams adad_params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
    adad_params.addRule(RelativeLayout.CENTER_HORIZONTAL);
    adad_params.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
    // adad.setToken(getString(R.string.adad_token));
    adad.setLayoutParams(adad_params);

    Button myButton = new Button(this);


    myButton.setBackgroundResource(R.drawable.more);
    RelativeLayout.LayoutParams adad_params1 = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,

            RelativeLayout.LayoutParams.WRAP_CONTENT);
    adad_params1.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
    adad_params1.addRule(RelativeLayout.ALIGN_PARENT_TOP);
    myButton.setLayoutParams(adad_params1);
    myButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            PTPlayer.appList.Display();
        }
    });

    Button myButton1 = new Button(this);


    myButton1.setBackgroundResource(R.drawable.more);
    RelativeLayout.LayoutParams adad_params2 = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,

            RelativeLayout.LayoutParams.WRAP_CONTENT);
    adad_params2.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
    adad_params2.addRule(RelativeLayout.ALIGN_PARENT_TOP);
    myButton1.setLayoutParams(adad_params2);
    myButton1.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            PTPlayer.appList.Display();
        }
    });


    relativeLayout.addView(this.mGLSurfaceView);
    relativeLayout.addView(adad);
    relativeLayout.addView(myButton);
    relativeLayout.addView(myButton1);
    ClickBanner_CLickYab_Holder.setTestMode();
    setContentView(relativeLayout);




}

public Cocos2dxGLSurfaceView onCreateView() {
    return new Cocos2dxGLSurfaceView(this);
}

     private final static boolean isAndroidEmulator() {
  String model = Build.MODEL;
  Log.d(TAG, "model=" + model);
  String product = Build.PRODUCT;
  Log.d(TAG, "product=" + product);
  boolean isEmulator = false;
  if (product != null) {
     isEmulator = product.equals("sdk") || product.contains("_sdk") ||     product.contains("sdk_");
  }
  Log.d(TAG, "isEmulator=" + isEmulator);
  return isEmulator;
}
}

@AnshulTyagi I want when I used onbackpresed the second view goes to first view — nsr, Sep 14 '16 at 06:28

score 4 · Answer 1 · answered Sep 14 '16 at 06:36

you must use of Override Method for when back button pressed if you want to stay on currnt activity use like this

@Override
    public void onBackPressed() {
        return;
    }

if you want to use double click to exit and one click to stay you can use like this

first define a variable for double click

boolean doubleBackToExit = false;

and the Override backbutton method

@Override
    public void onBackPressed() {
        if (doubleBackToExit) {
         //on double back button pressed
            return;
        }
        this.doubleBackToExit = true;
        new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
                doubleBackToExit=false;
            }
        }, 2000);
    }

Sagar Gangawane · Answer 2 · 2016-09-14T06:33:46.110

1

Overriding onBackPressed() of the activity and provide your screen where you want to go. onBackpressed() check which is the current view you are showing and according to move to the first view.

edited Sep 14 '16 at 06:33

answered Sep 14 '16 at 06:26

Sagar Gangawane

1,985
1
12
22

how?would you please explain more – nsr Sep 14 '16 at 06:27
@nsr set a flag which will indicate what you are showing on you activity.If it is firstview set it as firstview and vice versa for second view.onBackpressed() check which view is showing according to that show the view.Hope now this will help me.And vote the answer if you found useful. – Sagar Gangawane Sep 14 '16 at 06:42
I have 2 activity but when i use onbackpress it close both activity – nsr Sep 14 '16 at 06:45
check this [http://stackoverflow.com/questions/17526533/moving-from-one-activity-to-another-activity-in-android](link) .See the launch mode of activity in the manifest file. – Sagar Gangawane Sep 14 '16 at 06:50
this is about activity my question is something else – nsr Sep 14 '16 at 06:52

Mann · Answer 3 · 2016-09-14T06:30:18.553

1

Just don't call the super.onBackPressed() everytime.

    @Override
    public void onBackPressed() {
       if (isFirstView()) {
          super.onBackPressed();
      } else {
          switchToFirstView();
      }

Call in only when there isn't any last view available. Or where you want to close the App. The code will finish your activity when you are on the first activity. And switch to first activity if you are on second activity. Just replace my methods as per your code.

edited Sep 14 '16 at 06:30

answered Sep 14 '16 at 06:27

Mann

560
3
13

what is islastview() and swtichtopreviuosview()? – nsr Sep 14 '16 at 06:29
Just gave you the logic to switch the views. You atleast switch the views by yourself. Thank you. – Mann Sep 14 '16 at 06:31
my problem is that exactly how to switch to the next view – nsr Sep 14 '16 at 06:34

score 1 · Answer 4 · answered Sep 14 '16 at 06:29

1

Then do this.

@Override
public void onBackPressed() {
    super.onBackPressed();
    Intent intent = new Intent(MainActivityPhase2.this, GlobalSearch.class);
                startActivity(intent);
    finish();
}

answered Sep 14 '16 at 06:29

Anshul Tyagi

2,076
4
34
65

score 1 · Answer 5 · answered Sep 14 '16 at 07:41

1

in your second class Cocos2dxActivity, place this code.

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

answered Sep 14 '16 at 07:41

vikas kumar

10,447
2
46
52

score 1 · Answer 6 · answered Sep 14 '16 at 08:49

If you have just one activity with two View you can use Fragments. Using Fragments, Activity.OnBackPressed() will remove last fragment in the stack and you can resolve your problem.

So, in the activity you have to put a container in xml layout file:

<FrameLayout android:id="@+id/container" android:layout_width="match_parent" android:clickable="true" android:layout_height="match_parent"/>

In the Activity java file:

getFragmentManager().beginTransaction() .add(R.id.container,new YourHomeFragment()) .commit();

So to add second Fragment you can use this code:

getFragmentManager().beginTransaction() .add(R.id.container,new YourPlayFragment()) .addToBackStack("YourPlayFragment") //string what you want .commit();

Pay attention: you can call this code or in YourHomeFragment class (into button clickListener) or in your Activity (using a callback system). For example:

In YourHomeFragment --> playButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { getFragmentManager().beginTransaction() .add(R.id.container,new YourPlayFragment()) .addToBackStack("YourPlayFragment") //string what you want .commit(); } });

In this way, you have to declare two layout xml file for fragments and one for Activity.

List of java and relative xml files:

MainActivity.java activity_main.xml

YourHomeFragment.java fragment_your_home.xml <-- insert here your first View

YourPlayFragment.java fragment_your_play.xml <-- play view

mh ok. You can try to use FrameLayout declared in init() method. `getFragmentManager().beginTransaction() .add(framelayout.getId(),new YourHomeFragment()) .commit();` — hooloovoo, Sep 14 '16 at 09:46

onBackPressed() finishes my Activity

6 Answers6