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:cgeo.geocaching.CacheListActivity.java

@Override
public boolean onKeyDown(final int keyCode, final KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK && adapter.isSelectMode()) {
        adapter.setSelectMode(false);//from w  w w.  j  a  v  a  2  s .  c  o m
        return true;
    }
    return super.onKeyDown(keyCode, event);
}

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From source file:com.ccxt.whl.activity.MainActivity.java

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        moveTaskToBack(false);// w  w  w . j  a  va  2  s. co  m
        return true;
    }
    return super.onKeyDown(keyCode, event);
}

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From source file:dev.memento.MementoBrowser.java

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    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);
        Bitmap favicon = item.getFavicon();

        if (favicon == null)
            Log.d(LOG_TAG, "No favicon in WebHistoryItem - null");
        else//  w w w. j  a  va 2s .  co m
            Log.d(LOG_TAG, "WebHistoryItem favicon W = " + favicon.getWidth());

        mOriginalUrl = item.getUrl();
        Log.d(LOG_TAG, "GO BACK TO " + mOriginalUrl);

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

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From source file:com.customdatepicker.time.TimePickerDialog.java

/**
 * For keyboard mode, processes key events.
 * @param keyCode the pressed key./*from  ww w .  j a v a 2  s .c om*/
 * @return true if the key was successfully processed, false otherwise.
 */
private boolean processKeyUp(int keyCode) {
    if (keyCode == KeyEvent.KEYCODE_ESCAPE || keyCode == KeyEvent.KEYCODE_BACK) {
        if (isCancelable())
            dismiss();
        return true;
    } else if (keyCode == KeyEvent.KEYCODE_TAB) {
        if (mInKbMode) {
            if (isTypedTimeFullyLegal()) {
                finishKbMode(true);
            }
            return true;
        }
    } else if (keyCode == KeyEvent.KEYCODE_ENTER) {
        if (mInKbMode) {
            if (!isTypedTimeFullyLegal()) {
                return true;
            }
            finishKbMode(false);
        }
        if (mCallback != null) {
            mCallback.onTimeSet(this, mTimePicker.getHours(), mTimePicker.getMinutes(),
                    mTimePicker.getSeconds());
        }
        dismiss();
        return true;
    } else if (keyCode == KeyEvent.KEYCODE_DEL) {
        if (mInKbMode) {
            if (!mTypedTimes.isEmpty()) {
                int deleted = deleteLastTypedKey();
                String deletedKeyStr;
                if (deleted == getAmOrPmKeyCode(AM)) {
                    deletedKeyStr = mAmText;
                } else if (deleted == getAmOrPmKeyCode(PM)) {
                    deletedKeyStr = mPmText;
                } else {
                    deletedKeyStr = String.format("%d", getValFromKeyCode(deleted));
                }
                Utils.tryAccessibilityAnnounce(mTimePicker, String.format(mDeletedKeyFormat, deletedKeyStr));
                updateDisplay(true);
            }
        }
    } else if (keyCode == KeyEvent.KEYCODE_0 || keyCode == KeyEvent.KEYCODE_1 || keyCode == KeyEvent.KEYCODE_2
            || keyCode == KeyEvent.KEYCODE_3 || keyCode == KeyEvent.KEYCODE_4 || keyCode == KeyEvent.KEYCODE_5
            || keyCode == KeyEvent.KEYCODE_6 || keyCode == KeyEvent.KEYCODE_7 || keyCode == KeyEvent.KEYCODE_8
            || keyCode == KeyEvent.KEYCODE_9
            || (!mIs24HourMode && (keyCode == getAmOrPmKeyCode(AM) || keyCode == getAmOrPmKeyCode(PM)))) {
        if (!mInKbMode) {
            if (mTimePicker == null) {
                // Something's wrong, because time picker should definitely not be null.
                Log.e(TAG, "Unable to initiate keyboard mode, TimePicker was null.");
                return true;
            }
            mTypedTimes.clear();
            tryStartingKbMode(keyCode);
            return true;
        }
        // We're already in keyboard mode.
        if (addKeyIfLegal(keyCode)) {
            updateDisplay(false);
        }
        return true;
    }
    return false;
}

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From source file:com.android.mail.ui.ConversationViewFragment.java

@Override
public boolean onKey(View view, int keyCode, KeyEvent keyEvent) {
    if (keyEvent.getAction() == KeyEvent.ACTION_DOWN) {
        mOriginalKeyedView = view;/*from   w ww .j  a  va 2 s  .com*/
    }

    if (mOriginalKeyedView != null) {
        final int id = mOriginalKeyedView.getId();
        final boolean isRtl = ViewUtils.isViewRtl(mOriginalKeyedView);
        final boolean isActionUp = keyEvent.getAction() == KeyEvent.ACTION_UP;
        final boolean isStart = KeyboardUtils.isKeycodeDirectionStart(keyCode, isRtl);
        final boolean isEnd = KeyboardUtils.isKeycodeDirectionEnd(keyCode, isRtl);
        final boolean isUp = keyCode == KeyEvent.KEYCODE_DPAD_UP;
        final boolean isDown = keyCode == KeyEvent.KEYCODE_DPAD_DOWN;

        // First we run the event by the controller
        // We manually check if the view+direction combination should shift focus away from the
        // conversation view to the thread list in two-pane landscape mode.
        final boolean isTwoPaneLand = mNavigationController.isTwoPaneLandscape();
        final boolean navigateAway = shouldNavigateAway(id, isStart, isTwoPaneLand);
        if (mNavigationController.onInterceptKeyFromCV(keyCode, keyEvent, navigateAway)) {
            return true;
        }

        // If controller didn't handle the event, check directional interception.
        if ((isStart || isEnd) && shouldInterceptLeftRightEvents(id, isStart, isEnd, isTwoPaneLand)) {
            return true;
        } else if (isUp || isDown) {
            // We don't do anything on up/down for overlay
            if (id == R.id.conversation_topmost_overlay) {
                return true;
            }

            // We manually handle up/down navigation through the overlay items because the
            // system's default isn't optimal for two-pane landscape since it's not a real list.
            final View next = mConversationContainer.getNextOverlayView(mOriginalKeyedView, isDown);
            if (next != null) {
                focusAndScrollToView(next);
            } else if (!isActionUp) {
                // Scroll in the direction of the arrow if next view isn't found.
                final int currentY = mWebView.getScrollY();
                if (isUp && currentY > 0) {
                    mWebView.scrollBy(0, -Math.min(currentY, DEFAULT_VERTICAL_SCROLL_DISTANCE_PX));
                } else if (isDown) {
                    final int webviewEnd = (int) (mWebView.getContentHeight() * mWebView.getScale());
                    final int currentEnd = currentY + mWebView.getHeight();
                    if (currentEnd < webviewEnd) {
                        mWebView.scrollBy(0,
                                Math.min(webviewEnd - currentEnd, DEFAULT_VERTICAL_SCROLL_DISTANCE_PX));
                    }
                }
            }
            return true;
        }

        // Finally we handle the special keys
        if (keyCode == KeyEvent.KEYCODE_BACK && id != R.id.conversation_topmost_overlay) {
            if (isActionUp) {
                mTopmostOverlay.requestFocus();
            }
            return true;
        } else if (keyCode == KeyEvent.KEYCODE_ENTER && id == R.id.conversation_topmost_overlay) {
            if (isActionUp) {
                mWebView.scrollTo(0, 0);
                mConversationContainer.focusFirstMessageHeader();
            }
            return true;
        }
    }
    return false;
}

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From source file:com.example.carsharing.ShortWayActivity.java

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        Intent returnp = new Intent(ShortWayActivity.this, PersonalCenterActivity.class);
        returnp.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        startActivity(returnp);/*from  ww w.  j av a2s  .  c  om*/
        return false;
    } else {
        return super.onKeyDown(keyCode, event);
    }
}

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From source file:com.speed.traquer.app.TraqComplaintTaxi.java

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if ((keyCode == KeyEvent.KEYCODE_BACK)) {
        final AlertDialog.Builder alertBox = new AlertDialog.Builder(TraqComplaintTaxi.this);
        alertBox.setIcon(R.drawable.info_icon);
        alertBox.setCancelable(false);// w w w.  j  a v  a  2  s. com
        alertBox.setTitle("Do you want to cancel complaint?");
        alertBox.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface arg0, int arg1) {
                // finish used for destroyed activity
                easyTracker.send(MapBuilder
                        .createEvent("Complaint", "Cancel Complaint (Yes)", "Complaint event", null).build());
                NavUtils.navigateUpFromSameTask(TraqComplaintTaxi.this);
            }
        });

        alertBox.setNegativeButton("No", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int arg1) {
                easyTracker.send(MapBuilder
                        .createEvent("Complaint", "Cancel Complaint (No)", "Complaint event", null).build());
                dialog.cancel();
            }
        });

        alertBox.show();
    }
    return super.onKeyDown(keyCode, event);
}

---

From source file:com.instiwork.RegistrationFacebookActivity.java

public void dialogTermsUse() {
    View view = LayoutInflater.from(getApplicationContext()).inflate(R.layout.dialog_terms_use, null);
    mBottomSheetDialogTermsUse = new Dialog(RegistrationFacebookActivity.this, R.style.MaterialDialogSheet);
    mBottomSheetDialogTermsUse.setContentView(view);
    mBottomSheetDialogTermsUse.setCancelable(false);
    mBottomSheetDialogTermsUse.getWindow().setLayout(LinearLayout.LayoutParams.MATCH_PARENT,
            LinearLayout.LayoutParams.MATCH_PARENT);
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        mBottomSheetDialogTermsUse.getWindow()
                .addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
        mBottomSheetDialogTermsUse.getWindow().setStatusBarColor(Color.parseColor("#536942"));
    }/* www .  j av a2s. c o m*/
    mBottomSheetDialogTermsUse.getWindow().setGravity(Gravity.BOTTOM);
    mBottomSheetDialogTermsUse.show();

    view.findViewById(R.id.back_me_dlog_payment).setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            mBottomSheetDialogTermsUse.dismiss();
        }
    });

    pBarTermsUse = (ProgressBar) view.findViewById(R.id.pbar_terms_use);
    //        txtTermsUse = (RobotoLight) view.findViewById(R.id.txt_terms_use);

    webViewTermsUse = (WebView) view.findViewById(R.id.webv);
    webViewTermsUse.getSettings().setJavaScriptEnabled(true);
    webViewTermsUse.setVisibility(View.GONE);

    getTermsUse(InstiworkConstants.URL_DOMAIN + "Privacy_control");

    mBottomSheetDialogTermsUse.setOnKeyListener(new DialogInterface.OnKeyListener() {

        @Override
        public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) {
            if (event.getAction() == KeyEvent.ACTION_DOWN)
                if ((keyCode == KeyEvent.KEYCODE_BACK)) {
                    mBottomSheetDialogTermsUse.dismiss();
                    return true;
                }
            return false;
        }
    });
}

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From source file:com.fishstix.dosboxfree.DBGLSurfaceView.java

private boolean handleKey(int keyCode, final KeyEvent event) {
    if (mDebug)/*from   w  w w  .  ja  v  a  2 s  .  co  m*/
        Log.d("DosBoxTurbo", "handleKey keyCode=" + keyCode);
    int tKeyCode = 0;

    // check for xperia play back case
    if (keyCode == KeyEvent.KEYCODE_BACK && event.isAltPressed()) {
        int backval = customMap.get(DosBoxPreferences.XPERIA_BACK_BUTTON);
        if (backval > 0) {
            // Special Sony XPeria Play case
            if (mEnableDpad) {
                // FIRE2
                if ((mInputMode == INPUT_MODE_MOUSE) || (mInputMode == INPUT_MODE_REAL_MOUSE)) {
                    DosBoxControl.nativeMouse(0, 0, 0, 0, (event.getAction() == KeyEvent.ACTION_DOWN) ? 0 : 1,
                            BTN_B);
                } else if ((mInputMode == INPUT_MODE_JOYSTICK) || (mInputMode == INPUT_MODE_REAL_JOYSTICK)) {
                    DosBoxControl.nativeJoystick(0, 0, (event.getAction() == KeyEvent.ACTION_DOWN) ? 0 : 1,
                            BTN_B);
                }
            } else {
                // sony xperia play O (circle) button
                DosBoxControl.sendNativeKey(backval, (event.getAction() == KeyEvent.ACTION_DOWN), mModifierCtrl,
                        mModifierAlt, mModifierShift);
                return true; // consume event
            }
        }
        return true; // consume event
    }

    // Handle all other keyevents
    int value = customMap.get(keyCode);

    if (value > 0) {
        // found a valid mapping
        tKeyCode = getMappedKeyCode(value, event);
        if (tKeyCode > MAP_NONE) {
            DosBoxControl.sendNativeKey(tKeyCode, (event.getAction() == KeyEvent.ACTION_DOWN), mModifierCtrl,
                    mModifierAlt, mModifierShift);
            return true; // consume KeyEvent
        } else if (tKeyCode == MAP_EVENT_CONSUMED) {
            return true;
        }
    }

    if (keyCode == KeyEvent.KEYCODE_BACK) {
        // fishstix, allow remap of Android back button
        // catch no mapping
        if (event.getAction() == KeyEvent.ACTION_UP) {
            DBMenuSystem.doConfirmQuit(mParent);
        }
        return true;
    }

    switch (keyCode) {
    case KeyEvent.KEYCODE_UNKNOWN:
        break;

    default:
        boolean down = (event.getAction() == KeyEvent.ACTION_DOWN);
        if (mDebug)
            Log.d("DosBoxTurbo", "handleKey (default) keyCode=" + keyCode + " down=" + down);

        if (!down || (event.getRepeatCount() == 0)) {
            int unicode = event.getUnicodeChar();

            // filter system generated keys, but not hardware keypresses
            if ((event.isAltPressed() || event.isShiftPressed()) && (unicode == 0)
                    && ((event.getFlags() & KeyEvent.FLAG_FROM_SYSTEM) == 0))
                break;

            //fixed alt key problem for physical keyboard with only left alt
            if ((!mUseLeftAltOn) && (keyCode == KeyEvent.KEYCODE_ALT_LEFT)) {
                break;
            }

            if ((!mUseLeftAltOn) && (keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT)) {
                break;
            }

            if ((keyCode > 255) || (unicode > 255)) {
                //unknown keys
                break;
            }

            keyCode = keyCode | (unicode << 8);

            long diff = event.getEventTime() - event.getDownTime();

            if (!down && (diff < 50)) {
                //simulate as long press
                if (mDebug)
                    Log.d("DosBoxTurbo", "LongPress consumed keyCode=" + keyCode + " down=" + down);
                mKeyHandler.removeMessages(keyCode);
                mKeyHandler.sendEmptyMessageDelayed(keyCode, BUTTON_REPEAT_DELAY - diff);
            } else if (down && mKeyHandler.hasMessages(keyCode)) {
                if (mDebug)
                    Log.d("DosBoxTurbo", "KeyUp consumed keyCode=" + keyCode + " down=" + down);
                //there is an key up in queue, should be repeated event
            } else {
                boolean result = DosBoxControl.sendNativeKey(keyCode, down, mModifierCtrl, mModifierAlt,
                        mModifierShift);
                if (!down) {
                    mModifierCtrl = false;
                    mModifierAlt = false;
                    mModifierShift = false;
                }
                return result;
            }
        }
    }

    return false;
}

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From source file:ca.co.rufus.androidboilerplate.ui.DebugDrawerLayout.java

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK && hasVisibleDrawer()) {
        KeyEventCompat.startTracking(event);
        return true;
    }//from  w  w  w. ja  va 2s  .c om
    return super.onKeyDown(keyCode, event);
}

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