Example usage for android.view KeyEvent KEYCODE

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:ca.co.rufus.androidboilerplate.ui.DebugDrawerLayout.java

@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        final View visibleDrawer = findVisibleDrawer();
        if (visibleDrawer != null && getDrawerLockMode(visibleDrawer) == LOCK_MODE_UNLOCKED) {
            closeDrawers();//from   ww w .j av  a 2s . c  o  m
        }
        return visibleDrawer != null;
    }
    return super.onKeyUp(keyCode, event);
}

From source file:com.hijacker.MainActivity.java

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        if (mDrawerLayout.isDrawerOpen(mDrawerList)) {
            mDrawerLayout.closeDrawer(mDrawerList);
        } else if (mFragmentManager.getBackStackEntryCount() > 1) {
            mFragmentManager.popBackStackImmediate();
        } else {/*  w  w  w.  ja v  a  2s. c om*/
            new ExitDialog().show(mFragmentManager, "ExitDialog");
        }
        return true;
    }
    return super.onKeyDown(keyCode, event);
}

From source file:android.support.v7.widget.AbstractXpListPopupWindow.java

/**
 * Filter pre-IME key events. By forwarding {@link View#onKeyPreIme(int, KeyEvent)}
 * events to this function, views using ListPopupWindow can have it dismiss the popup
 * when the back key is pressed./* w ww .j a  v  a 2s . com*/
 *
 * @param keyCode keyCode param passed to the host view's onKeyPreIme
 * @param event event param passed to the host view's onKeyPreIme
 * @return true if the event was handled, false if it was ignored.
 * @see #setModal(boolean)
 */
public boolean onKeyPreIme(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK && isShowing()) {
        // special case for the back key, we do not even try to send it
        // to the drop down list but instead, consume it immediately
        final View anchorView = mDropDownAnchorView;
        if (event.getAction() == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0) {
            KeyEvent.DispatcherState state = anchorView.getKeyDispatcherState();
            if (state != null) {
                state.startTracking(event, this);
            }
            return true;
        } else if (event.getAction() == KeyEvent.ACTION_UP) {
            KeyEvent.DispatcherState state = anchorView.getKeyDispatcherState();
            if (state != null) {
                state.handleUpEvent(event);
            }
            if (event.isTracking() && !event.isCanceled()) {
                dismiss();
                return true;
            }
        }
    }
    return false;
}

From source file:com.devwang.logcabin.LogCabinMainActivity.java

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    //    // w w  w . j av  a  2s .co  m
    if (keyCode == KeyEvent.KEYCODE_BACK && event.getAction() == KeyEvent.ACTION_DOWN) {

        if ((System.currentTimeMillis() - exitTime) > 2000) // System.currentTimeMillis()2000
        {
            Toast.makeText(getApplicationContext(), "", Toast.LENGTH_SHORT).show();
            exitTime = System.currentTimeMillis();
        } else {
            if (mChatService != null)
                mChatService.stop();
            finish();
            System.exit(0);
        }

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

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

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        Intent returnp = new Intent(CommuteActivity.this, PersonalCenterActivity.class);
        returnp.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        startActivity(returnp);//  w w  w .j  a  v a  2  s .  c  om
        return false;
    } else {
        return super.onKeyDown(keyCode, event);
    }
}

From source file:org.zirco.ui.activities.MainActivity.java

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

    switch (keyCode) {
    case KeyEvent.KEYCODE_BACK:
        this.moveTaskToBack(true);
        return true;
    default:/*from  w w w.  j a va  2s  . c  o m*/
        return super.onKeyLongPress(keyCode, event);
    }
}

From source file:com.android.tv.MainActivity.java

@Override
public boolean dispatchKeyEvent(KeyEvent event) {
    if (SystemProperties.LOG_KEYEVENT.getValue())
        Log.d(TAG, "dispatchKeyEvent(" + event + ")");
    // If an activity is closed on a back key down event, back key down events with none zero
    // repeat count or a back key up event can be happened without the first back key down
    // event which should be ignored in this activity.
    if (event.getKeyCode() == KeyEvent.KEYCODE_BACK) {
        if (event.getAction() == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0) {
            mBackKeyPressed = true;//from   ww w. java2 s  . c  o  m
        }
        if (!mBackKeyPressed) {
            return true;
        }
        if (event.getAction() == KeyEvent.ACTION_UP) {
            mBackKeyPressed = false;
        }
    }

    // When side panel is closing, it has the focus.
    // Keep the focus, but just don't deliver the key events.
    if ((mOverlayRootView.hasFocusable() && !mOverlayManager.getSideFragmentManager().isHiding())
            || mOverlayManager.getSideFragmentManager().isActive()) {
        return super.dispatchKeyEvent(event);
    }
    if (BLACKLIST_KEYCODE_TO_TIS.contains(event.getKeyCode()) || KeyEvent.isGamepadButton(event.getKeyCode())) {
        // If the event is in blacklisted or gamepad key, do not pass it to session.
        // Gamepad keys are blacklisted to support TV UIs and here's the detail.
        // If there's a TIS granted RECEIVE_INPUT_EVENT, TIF sends key events to TIS
        // and return immediately saying that the event is handled.
        // In this case, fallback key will be injected but with FLAG_CANCELED
        // while gamepads support DPAD_CENTER and BACK by fallback.
        // Since we don't expect that TIS want to handle gamepad buttons now,
        // blacklist gamepad buttons and wait for next fallback keys.
        // TODO) Need to consider other fallback keys (e.g. ESCAPE)
        return super.dispatchKeyEvent(event);
    }
    return dispatchKeyEventToSession(event) || super.dispatchKeyEvent(event);
}

From source file:keyboard.ecloga.com.eclogakeyboard.EclogaKeyboard.java

@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
    if (volumeButtons && (keyCode == KeyEvent.KEYCODE_VOLUME_UP) || (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN)) {
        return true;
    } else if (!vbListenerPause && keyCode == KeyEvent.KEYCODE_BACK) {
        screen = 1;//w  w w  .j ava 2s  .  c  om

        if (shakeDelete) {
            mShaker.pause();
        }

        vbListenerPause = true;

        return true;
    } else {
        return super.onKeyUp(keyCode, event);
    }
}

From source file:co.taqat.call.LinphoneActivity.java

public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        if (currentFragment == FragmentsAvailable.DIALER || currentFragment == FragmentsAvailable.CONTACTS_LIST
                || currentFragment == FragmentsAvailable.HISTORY_LIST
                || currentFragment == FragmentsAvailable.CHAT_LIST) {
            boolean isBackgroundModeActive = LinphonePreferences.instance().isBackgroundModeEnabled();
            if (!isBackgroundModeActive) {
                stopService(new Intent(Intent.ACTION_MAIN).setClass(this, LinphoneService.class));
                finish();/*  w ww.j a  v  a  2  s. c  o  m*/
            } else if (LinphoneUtils.onKeyBackGoHome(this, keyCode, event)) {
                return true;
            }
        }
    }
    return super.onKeyDown(keyCode, event);
}

Example usage for android.view KeyEvent KEYCODE_BACK

Introduction

Prototype

Document

Usage