Example usage for android.view KeyEvent KEYCODE_BACK

Introduction

In this page you can find the example usage for android.view KeyEvent KEYCODE_BACK.

Prototype

int KEYCODE_BACK

To view the source code for android.view KeyEvent KEYCODE_BACK.

Click Source Link

Document

Key code constant: Back key.

Usage

From source file:com.aujur.ebookreader.activity.ReadingFragment.java

public boolean dispatchKeyEvent(KeyEvent event) {

    int action = event.getAction();
    int keyCode = event.getKeyCode();

    LOG.debug("Got key event: " + keyCode + " with action " + action);

    if (searchMenuItem != null && searchMenuItem.isActionViewExpanded()) {
        boolean result = searchMenuItem.getActionView().dispatchKeyEvent(event);

        if (result) {
            return true;
        }/*from w w w.  j  a v  a 2s  .c o m*/
    }

    final int KEYCODE_NOOK_TOUCH_BUTTON_LEFT_TOP = 92;
    final int KEYCODE_NOOK_TOUCH_BUTTON_LEFT_BOTTOM = 93;
    final int KEYCODE_NOOK_TOUCH_BUTTON_RIGHT_TOP = 94;
    final int KEYCODE_NOOK_TOUCH_BUTTON_RIGHT_BOTTOM = 95;

    boolean nook_touch_up_press = false;

    if (isAnimating() && action == KeyEvent.ACTION_DOWN) {
        stopAnimating();
        return true;
    }

    /*
     * Tricky bit of code here: if we are NOT running TTS, we want to be
     * able to start it using the play/pause button.
     * 
     * When we ARE running TTS, we'll get every media event twice: once
     * through the receiver and once here if focused.
     * 
     * So, we only try to read media events here if tts is running.
     */
    if (!ttsIsRunning() && dispatchMediaKeyEvent(event)) {
        return true;
    }

    LOG.debug("Key event is NOT a media key event.");

    switch (keyCode) {

    case KeyEvent.KEYCODE_VOLUME_DOWN:
    case KeyEvent.KEYCODE_VOLUME_UP:
        return handleVolumeButtonEvent(event);

    case KeyEvent.KEYCODE_DPAD_RIGHT:
        if (action == KeyEvent.ACTION_DOWN) {
            pageDown(Orientation.HORIZONTAL);
        }

        return true;

    case KeyEvent.KEYCODE_DPAD_LEFT:
        if (action == KeyEvent.ACTION_DOWN) {
            pageUp(Orientation.HORIZONTAL);
        }

        return true;

    case KeyEvent.KEYCODE_BACK:
        if (action == KeyEvent.ACTION_DOWN) {

            if (titleBarLayout.getVisibility() == View.VISIBLE) {
                hideTitleBar();
                updateFromPrefs();
                return true;
            } else if (bookView.hasPrevPosition()) {
                bookView.goBackInHistory();
                return true;
            }
        }

        return false;

    case KEYCODE_NOOK_TOUCH_BUTTON_LEFT_TOP:
    case KEYCODE_NOOK_TOUCH_BUTTON_RIGHT_TOP:
        nook_touch_up_press = true;
    case KEYCODE_NOOK_TOUCH_BUTTON_LEFT_BOTTOM:
    case KEYCODE_NOOK_TOUCH_BUTTON_RIGHT_BOTTOM:
        if (!Configuration.IS_NOOK_TOUCH || action == KeyEvent.ACTION_UP)
            return false;
        if (nook_touch_up_press == config.isNookUpButtonForward())
            pageDown(Orientation.HORIZONTAL);
        else
            pageUp(Orientation.HORIZONTAL);
        return true;
    }

    LOG.debug("Not handling key event: returning false.");
    return false;
}

---

From source file:com.mobicage.rogerthat.registration.RegistrationActivity2.java

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        if (mWiz.getPosition() == 3) {
            mWiz.goBack();/* www  .  j a  va 2 s .c om*/
            return true;
        }
    }
    return super.onKeyDown(keyCode, event);
}

---

From source file:com.jtschohl.androidfirewall.MainActivity.java

@Override
public boolean onKeyDown(final int keyCode, final KeyEvent event) {
    // Handle the back button when dirty
    if (this.dirty && (keyCode == KeyEvent.KEYCODE_BACK)) {
        final DialogInterface.OnClickListener dialogClickListener = new DialogInterface.OnClickListener() {
            @Override// w  ww . j a v  a2 s .  c  om
            public void onClick(DialogInterface dialog, int which) {
                switch (which) {
                case DialogInterface.BUTTON_POSITIVE:
                    applyOrSaveRules();
                    finish();
                    break;
                case DialogInterface.BUTTON_NEGATIVE:
                    // Propagate the event back to perform the desired
                    // action
                    MainActivity.super.onKeyDown(keyCode, event);
                    finish();
                    break;
                }
            }
        };
        final AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle(R.string.unsaved_changes).setMessage(R.string.unsaved_changes_message)
                .setPositiveButton(R.string.apply, dialogClickListener)
                .setNegativeButton(R.string.discard, dialogClickListener).show();
        // Say that we've consumed the event
        return true;
    }
    return super.onKeyDown(keyCode, event);
}

---

From source file:com.efithealth.app.activity.ChatActivity.java

/**
 * /*from  w w w . j  a v  a  2  s. c om*/
 */
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
    if (event.getAction() == KeyEvent.ACTION_UP && event.getKeyCode() == KeyEvent.KEYCODE_BACK) {
        if (panel_root.getVisibility() != View.GONE) {
            KPSwitchConflictUtil.hidePanelAndKeyboard(panel_root);
            panel_root.setVisibility(View.GONE);
            return true;
        }
    }
    return super.dispatchKeyEvent(event);
}

---

From source file:dev.memento.MainActivity.java

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {

    // Back button goes back to previous page or memento
    if ((keyCode == KeyEvent.KEYCODE_BACK) && mWebview.canGoBack()) {

        // Get the previous URL to update our internal copy 

        WebBackForwardList list = mWebview.copyBackForwardList();
        int curr = list.getCurrentIndex();
        WebHistoryItem item = list.getItemAtIndex(curr - 1);
        String url = item.getUrl();

        if (Log.LOG)
            Log.d(LOG_TAG, "GO BACK TO " + url);

        mWebview.goBack();/*from   w w  w  .  j a v a 2 s.co  m*/

        // Reset to today because it might be confusing to set to other dates
        setChosenDate(mToday);

        // Just in case
        mMementoProgressBar.setVisibility(View.GONE);

        if (Log.LOG)
            Log.d(LOG_TAG, "mWebHistory size = " + mWebHistory.size());
        if (mWebHistory.isEmpty()) {
            if (Log.LOG)
                Log.e(LOG_TAG, "Stack maintaining page dates is empty!");
        } else {
            ExWebHistoryItem item2 = mWebHistory.pop(); // Remove current
            if (Log.LOG)
                Log.d(LOG_TAG, "!! Removed item " + item2 + " from stack");

            if (!mWebHistory.isEmpty()) {
                item2 = mWebHistory.peek(); // Previous
                if (Log.LOG)
                    Log.d(LOG_TAG, "!! Top item is " + item2);
            }

            mCurrentMemento = item2.getMemento();
            if (Log.LOG)
                Log.d(LOG_TAG, "mCurrentMemento = " + mCurrentMemento);
            if (mCurrentMemento == null)
                mDateDisplayed = mToday;
            else
                mDateDisplayed = mCurrentMemento.getDateTime();

            if (Log.LOG)
                Log.d(LOG_TAG, "!! Back to date " + mDateDisplayed);
            refreshDisplayedDate();

            // Indicate the user pressed the back button
            mUserPressedBack = true;

            // Should be able to press if it's not today
            mNowButton.setEnabled(mToday.compareDateTo(mDateDisplayed) != 0);

            //if (mCurrentMemento != null && !mCurrentMemento.getUrl().equals(url) && 
            //      !url.equals(mOriginalUrl)) {
            if (!mOriginalUrl.equals(item2.getOriginalUrl())) {
                mOriginalUrl = item2.getOriginalUrl();
                if (Log.LOG)
                    Log.d(LOG_TAG, "** Clearing list of old mementos");
                if (Log.LOG)
                    Log.d(LOG_TAG, "mOriginalUrl = " + mOriginalUrl);
                mMementos.clear();
            }
        }

        return true;
    }
    return super.onKeyDown(keyCode, event);
}

---

From source file:com.lifehackinnovations.siteaudit.FloorPlanActivity.java

@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {

    Log.d("keycode", u.s(keyCode));
    Log.d("tab", u.s(KeyEvent.KEYCODE_TAB));

    if (keyCode == KeyEvent.KEYCODE_BACK) {

        return true;
    }// w  w  w  .  j av a  2s. co m

    return false;
}

---

From source file:com.grass.caishi.cc.activity.main.MainActivity.java

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        if (isTaskRoot()) {
            moveTaskToBack(false);/*from w ww .  j  a v a  2s .c  om*/
        } else {
            moveTaskToBack(true);
        }
        return true;
    }
    return super.onKeyDown(keyCode, event);
}

---

From source file:study.tdcc.act.MainCalendar.java

/**
 * ??//  w ww  .j ava2 s.  c  o m
 *
 * @param kEvent  
 * @return ?????true
 */
@Override
public boolean dispatchKeyEvent(KeyEvent kEvent) {
    Log.d("DEBUG", "MainCalendar dispatchKeyEvent Start");
    //?????
    if (kEvent.getAction() == KeyEvent.ACTION_DOWN) {
        //?????
        if (kEvent.getKeyCode() == KeyEvent.KEYCODE_BACK) {
            //?yes/no?
            showYesNoDialog(this, R.string.mes1_dialog, R.string.mes2_dialog,
                    new DialogInterface.OnClickListener() {
                        //??
                        public void onClick(DialogInterface dialog, int whith) {
                            if (whith == DialogInterface.BUTTON_POSITIVE) {
                                //
                                endActivity();
                            } else if (whith == DialogInterface.BUTTON_NEGATIVE) {
                                //
                                return;
                            }
                        }
                    });
        }
    }
    Log.d("DEBUG", "MainCalendar dispatchKeyEvent End");
    return super.dispatchKeyEvent(kEvent);
}

---

From source file:cm.aptoide.pt.MainActivity.java

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        View v = availableListView.getChildAt(0);
        scrollMemory.put(depth, new ListViewPosition((v == null) ? 0 : v.getTop(),
                availableListView.getFirstVisiblePosition()));

        if (!ApplicationAptoide.MULTIPLESTORES) {
            if (!depth.equals(ListDepth.CATEGORY1) && pager.getCurrentItem() == 1) {
                if (depth.equals(ListDepth.TOPAPPS) || depth.equals(ListDepth.LATEST_LIKES)
                        || depth.equals(ListDepth.LATESTAPPS) || depth.equals(ListDepth.LATEST_COMMENTS)
                        || depth.equals(ListDepth.RECOMMENDED) || depth.equals(ListDepth.ALLAPPLICATIONS)) {
                    depth = ListDepth.CATEGORY1;
                } else {
                    depth = ListDepth.values()[depth.ordinal() - 1];
                }//from www.  ja  v  a2  s .co  m
                removeLastBreadCrumb();
                refreshAvailableList(true);
                return false;
            }
        } else {
            if (!depth.equals(ListDepth.STORES) && pager.getCurrentItem() == 1) {
                if (depth.equals(ListDepth.TOPAPPS) || depth.equals(ListDepth.LATEST_LIKES)
                        || depth.equals(ListDepth.LATESTAPPS) || depth.equals(ListDepth.LATEST_COMMENTS)
                        || depth.equals(ListDepth.RECOMMENDED) || depth.equals(ListDepth.ALLAPPLICATIONS)) {
                    depth = ListDepth.CATEGORY1;
                } else {
                    depth = ListDepth.values()[depth.ordinal() - 1];
                }
                removeLastBreadCrumb();
                refreshAvailableList(true);
                return false;
            }

        }
    }

    if (ApplicationAptoide.isRestartLauncher()) {
        ApplicationAptoide.restartLauncher(MainActivity.this);
        ApplicationAptoide.setRestartLauncher(false);

    }

    return super.onKeyDown(keyCode, event);
}

---

From source file:com.dmsl.anyplace.UnifiedNavigationActivity.java

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    switch (keyCode) {
    case KeyEvent.KEYCODE_BACK:
        finish();/* w  w w.j  a v  a  2s.c  o  m*/
        return true;
    case KeyEvent.KEYCODE_FOCUS:
    case KeyEvent.KEYCODE_CAMERA:
    case KeyEvent.KEYCODE_SEARCH:
        // Handle these events so they don't launch the Camera app
        return true;
    }
    return super.onKeyDown(keyCode, event);
}

---

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