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:net.evecom.androidecssp.activity.event.ContinueAddActivity.java

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if ((keyCode == KeyEvent.KEYCODE_BACK)) {
        Intent intent = new Intent();
        setResult(4, intent);/*from ww  w .  j  a v a2 s.c  o m*/
        finish();
        return true;
    }
    return super.onKeyDown(keyCode, event);
}

From source file:com.javielinux.tweettopics2.TweetActivity.java

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        if (popupLinks.isShowLinks()) {
            popupLinks.hideLinks();// w w w  . j  a va 2  s  .c o m
            return false;
        }
        if (splitActionBarMenu.isShowing()) {
            splitActionBarMenu.hideSplitActionBarMenu();
            return false;
        }
    }
    return super.onKeyDown(keyCode, event);
}

From source file:com.google.android.apps.paco.ExperimentExecutorCustomRendering.java

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if ((keyCode == KeyEvent.KEYCODE_BACK) && webView.canGoBack()) {
        webView.goBack();//from  w  w w  .j  a  va2 s.  c o  m
        return true;
    }
    return super.onKeyDown(keyCode, event);
}

From source file:com.bookkos.bircle.CaptureActivity.java

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    switch (keyCode) {
    case KeyEvent.KEYCODE_BACK:
        if (source == IntentSource.NATIVE_APP_INTENT) {
            setResult(RESULT_CANCELED);// w  w w . j  a v a2s.c o  m
            finish();
            return true;
        }
        if ((source == IntentSource.NONE || source == IntentSource.ZXING_LINK) && lastResult != null) {
            restartPreviewAfterDelay(0L);
            return true;
        }
        break;
    case KeyEvent.KEYCODE_FOCUS:
    case KeyEvent.KEYCODE_CAMERA:
        return true;
    // Use volume up/down to turn on light
    //      case KeyEvent.KEYCODE_VOLUME_DOWN:
    //         cameraManager.setTorch(false);
    //         return true;
    //      case KeyEvent.KEYCODE_VOLUME_UP:
    //         cameraManager.setTorch(true);
    //         return true;
    }
    return super.onKeyDown(keyCode, event);
}

From source file:com.github.akinaru.rfdroid.activity.BtDevicesActivity.java

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

    if (event.getAction() == KeyEvent.ACTION_DOWN && keyCode == KeyEvent.KEYCODE_BACK) {

        if (scanningListView.getVisibility() == View.VISIBLE) {
            onBackPressed();//from   w w  w .  j a v  a2s.c  om
        } else {
            if (currentService.isScanning()) {
                hideProgressBar();
                currentService.stopScan();
            }
            mScanIntervalSeekbar.setVisibility(View.GONE);
            mWindowIntervalSeekbar.setVisibility(View.GONE);
            scanningListView.setVisibility(View.VISIBLE);
            if (deviceNameTv != null)
                deviceNameTv.setVisibility(View.GONE);
        }
        return true;
    }
    return super.onKeyDown(keyCode, event);
}

From source file:com.holo.fileexplorer.MainActivity.java

/**
 * KeyDown/KeyUp code derived from//from  w  ww. j  a  v a 2  s.  co  m
 * http://developer.android.com/sdk/android-2.0.html (read very bottom of
 * page)
 * <p>
 * The user may tap the back button, but then drag off of the button to
 * avoid a button press
 * 
 * @see android.support.v4.app.FragmentActivity#onKeyDown(int,
 *      android.view.KeyEvent)
 * 
 * 
 */
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) {
        event.startTracking();
        return true;
    }
    return super.onKeyDown(keyCode, event);
}

From source file:com.example.android.Game.java

/**
 * onKeyDown overrides onKeyDown and allows code to be executed when the
 * back button is pushed in the simulator / on the mobile phone Since
 * pushing "back" won't necessarily call the destroy method as far as I
 * understand it.//from w ww .  java 2  s.c o m
 * 
 * @param keyCode
 *            : code of the key pressed
 * @param event
 *            : the event for the key pressed
 */
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == zero) {

        //This code cannot be in onStop in Game because
        //it also kills the applause noise as GameEnd begins      
        // cancel any noises and abandon focus
        SoundPlayer.stop();
        if (focusHelper != null) {
            focusHelper.abandonFocus();
        }

        // continue backwards (kills current activity)
        finish();

        return true;
    }

    return super.onKeyDown(keyCode, event);
}

From source file:com.holo.fileexplorer.MainActivity.java

/**
 * /*from   w  w w .j a  v a2s. co m*/
 */
public boolean onKeyUp(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK && event.isTracking() && !event.isCanceled()) {
        // *** DO ACTION HERE ***
        if (mViewPager.getFragment(mPager, mPager.getCurrentItem()).backOneLevel()) {
            return true;
        } else {
            new AlertDialog.Builder(this).setIcon(android.R.drawable.ic_dialog_alert)
                    .setMessage("Quit the application?")
                    .setPositiveButton("Yes", new DialogInterface.OnClickListener() {

                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            // android.os.Debug.stopMethodTracing();
                            finish();
                        }

                    }).setNegativeButton("No", null).show();
        }
        return true;
    }
    return super.onKeyUp(keyCode, event);
}

From source file:com.codetroopers.betterpickers.radialtimepicker.RadialTimePickerDialogFragment.java

/**
 * For keyboard mode, processes key events.
 *
 * @param keyCode the pressed key.//from   w  w  w . j a v a 2  s  .  c o m
 * @return true if the key was successfully processed, false otherwise.
 */
private boolean processKeyUp(int keyCode) {
    if (keyCode == KeyEvent.KEYCODE_ESCAPE || keyCode == KeyEvent.KEYCODE_BACK) {
        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);
        }
        doneClickValidateAndCallback();
        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;
}

From source file:com.javielinux.tweettopics2.TweetTopicsActivity.java

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        if (isShowOptionsColumns()) {
            hideOptionsColumns();// ww w  .  java  2 s.  c  om
            return false;
        }
        if (popupLinks.isShowLinks()) {
            popupLinks.hideLinks();
            return false;
        }
        if (splitActionBarMenu.isShowing()) {
            splitActionBarMenu.hideSplitActionBarMenu();
            return false;
        }
        if (isShowColumnsItems) {
            showActionBarIndicatorAndMovePager(-1);
            return false;
        }
    }
    if (keyCode == KeyEvent.KEYCODE_MENU) {
        goToColumn(0, false, -1);
    }
    return super.onKeyDown(keyCode, event);
}

Example usage for android.view KeyEvent KEYCODE_BACK

Introduction

Prototype

Document

Usage