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.geotrackin.gpslogger.GpsMainActivity.java

/**
 * Handles the hardware back-button press
 *///w ww.  j  a  v a  2s  .  c  o  m
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK && Session.isBoundToService()) {
        StopAndUnbindServiceIfRequired();
    }

    return super.onKeyDown(keyCode, event);
}

---

From source file:com.liato.bankdroid.WebViewActivity.java

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (mWebView != null) {
        if ((keyCode == KeyEvent.KEYCODE_BACK) && mWebView.canGoBack()) {
            mWebView.goBack();//from  w w  w  .j a v a2  s.  c  o m
            return true;
        }
    }
    return super.onKeyDown(keyCode, event);
}

---

From source file:com.example.testapplication.DialogLocation.java

@SuppressLint("InlinedApi")
@Override//from ww  w.  j  a  va2  s.c o m
public Dialog onCreateDialog(Bundle savedInstanceState) {
    mProgressBar = new ProgressBar(getActivity(), null, android.R.attr.progressBarStyleLarge);
    mProgressBarInv = new ProgressBar(getActivity(), null, android.R.attr.progressBarStyleLarge);
    mProgressBarInv.setVisibility(ProgressBar.GONE);

    mLocationManager = (LocationManager) getActivity().getSystemService(Context.LOCATION_SERVICE);

    mCriteria = new Criteria();
    int criteria = (mGpsPref) ? Criteria.POWER_HIGH : Criteria.POWER_MEDIUM;
    mCriteria.setPowerRequirement(criteria);

    mProvider = mLocationManager.getBestProvider(mCriteria, true);
    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());

    ConnectivityManager cm = (ConnectivityManager) getActivity().getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo networkInfo = cm.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
    TelephonyManager tm = (TelephonyManager) getActivity().getSystemService(Context.TELEPHONY_SERVICE);
    int telephonyInfo = tm.getNetworkType();

    boolean networkAvailable = true;

    if ((telephonyInfo == TelephonyManager.NETWORK_TYPE_UNKNOWN && !networkInfo.isConnected())
            || !mLocationManager.isProviderEnabled("network")) {
        networkAvailable = false;
    }

    int locationMode = -1;
    int locationType = -1;
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
        try {
            locationMode = Settings.Secure.getInt(getActivity().getContentResolver(),
                    Settings.Secure.LOCATION_MODE);
        } catch (SettingNotFoundException e) {
            e.printStackTrace();
        }

        if (locationMode == Settings.Secure.LOCATION_MODE_OFF
                || (!networkAvailable && (mProvider.matches("network"))))
            locationType = NO_LOCATION_SERVICES;
        else if (mGpsPref && (locationMode == Settings.Secure.LOCATION_MODE_SENSORS_ONLY
                || locationMode == Settings.Secure.LOCATION_MODE_HIGH_ACCURACY))
            locationType = (locationMode == Settings.Secure.LOCATION_MODE_SENSORS_ONLY || !networkAvailable)
                    ? USING_ONLY_GPS_LOCATION
                    : USING_GPS_LOCATION_NETWORK_AVAILABLE;
        else if (mProvider.matches("network") && (locationMode == Settings.Secure.LOCATION_MODE_BATTERY_SAVING
                || locationMode == Settings.Secure.LOCATION_MODE_HIGH_ACCURACY))
            locationType = USING_NETWORK_LOCATION;

    } else {
        if (mProvider.matches("passive") || !networkAvailable
                && (mProvider.matches("network") || (!mGpsPref && mProvider.matches("gps"))))
            locationType = NO_LOCATION_SERVICES;
        else if (mProvider.matches("gps") && mGpsPref)
            locationType = ((mProvider.matches("gps")) || !networkAvailable) ? USING_ONLY_GPS_LOCATION
                    : USING_GPS_LOCATION_NETWORK_AVAILABLE;
        else if (mProvider.matches("network"))
            locationType = USING_NETWORK_LOCATION;
    }

    switch (locationType) {
    case NO_LOCATION_SERVICES:
        builder.setTitle(DIALOG_LOCATION_NO_LOCATION_SERVICES_TITLE);
        builder.setMessage(DIALOG_LOCATION_NO_LOCATION_SERVICES_MESSAGE);
        builder.setNeutralButton(DIALOG_LOCATION_BUTTON_SETTINGS, noNetworkButton);
        mAbortRequest = true;
        break;
    case USING_ONLY_GPS_LOCATION:
        builder.setTitle(DIALOG_LOCATION_UPDATING_GPS_TITLE);
        builder.setMessage(DIALOG_LOCATION_ONLY_GPS_MESSAGE);
        builder.setNeutralButton(DIALOG_LOCATION_BUTTON_SETTINGS, noNetworkButton);
        builder.setView(mProgressBar);
        break;
    case USING_GPS_LOCATION_NETWORK_AVAILABLE:
        builder.setTitle(DIALOG_LOCATION_UPDATING_GPS_TITLE);
        builder.setPositiveButton(DIALOG_LOCATION_USE_NETWORK, null);
        builder.setView(mProgressBar);
        break;
    case USING_NETWORK_LOCATION:
        builder.setView(mProgressBar);
        builder.setTitle(DIALOG_LOCATION_UPDATING_NETWORK_TITLE);
        break;
    }

    builder.setNegativeButton(DIALOG_LOCATION_CANCEL, cancelListener);
    builder.setOnKeyListener(new DialogInterface.OnKeyListener() {

        @Override
        public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) {
            if (keyCode == KeyEvent.KEYCODE_BACK) {
                mCallback.onLocationFound(null, mFragmentId);
                mLocationManager.removeUpdates(DialogLocation.this);
                Toast.makeText(getActivity(), "Location request cancelled", Toast.LENGTH_SHORT).show();
                dialog.cancel();
                return true;
            }
            return false;
        }
    });

    mRealDialog = builder.create();
    mRealDialog.setOnShowListener(usingNetwork);
    mRealDialog.setCanceledOnTouchOutside(false);
    return mRealDialog;
}

---

From source file:cn.eoe.android.libraries.ui.activity.MainActivity.java

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK && event.getAction() == KeyEvent.ACTION_DOWN) {
        if (isExit) {
            System.exit(0);//  w w w . jav a2  s  .c om
        }
        Toast.makeText(this, "??", Toast.LENGTH_SHORT).show();
        countDownTimer.start();
        return true;
    }
    return super.onKeyDown(keyCode, event);
}

---

From source file:org.geometerplus.android.fbreader.network.NetworkLibraryActivity.java

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) {
        final NetworkItemsLoader loader = NetworkLibrary.Instance().getStoredLoader(getCurrentTree());
        if (loader != null) {
            loader.interrupt();/* ww  w.ja  v a2 s . c om*/
        }
    }
    return super.onKeyDown(keyCode, event);
}

---

From source file:es.uja.photofirma.android.LoginActivity.java

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        finish();//  w  ww  .ja  va 2  s .  c o m
        overridePendingTransition(R.anim.right_in, R.anim.right_out);
    }
    return false;
}

---

From source file:com.github.michalbednarski.intentslab.editor.FindComponentDialog.java

/**
 * Handle back key if we're in specific app
 *///from  w ww  . j a  va 2 s  .  co m
@Override
public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK && mInPackage != null) {
        mInPackage = null;
        mAppListAdapter.notifyDataSetChanged();
        if (mAllAppsListViewState != null) {
            mListView.onRestoreInstanceState(mAllAppsListViewState);
        }
        return true;
    }
    return false;
}

---

From source file:com.alivenet.dmvtaxi.fragment.FragmentArriveDriver.java

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    if (view != null) {

        ViewGroup parent = (ViewGroup) view.getParent();
        if (parent != null)
            parent.removeView(view);//from  w w w . j a  v  a 2  s.com

    }
    try {
        view = inflater.inflate(R.layout.fragment_time_estemet, container, false);
    } catch (InflateException e) {
    }
    if (android.os.Build.VERSION.SDK_INT > 9) {
        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
        StrictMode.setThreadPolicy(policy);
    }
    mPref = getActivity().getSharedPreferences(MYPREF, Context.MODE_PRIVATE);
    mUserId = mPref.getString("userId", null);

    gps = new GPSTracker(getActivity());
    MyApplication.arrivedrivermarker = true;
    progressDialog = new ProgressDialog(getActivity());
    progressDialog.setMessage("Please wait...");
    progressDialog.setCancelable(false);

    mlinerlayoutbottom = (LinearLayout) view.findViewById(R.id.ll_bottom);
    mphone = (ImageView) view.findViewById(R.id.iv_phone);
    mphonenumber = (TextView) view.findViewById(R.id.tv_phonenumber);
    marrivaltime = (TextView) view.findViewById(R.id.tv_textarrival);
    mname = (TextView) view.findViewById(R.id.tv_name);
    mlicence = (TextView) view.findViewById(R.id.tv_licence);
    mtaximodel = (TextView) view.findViewById(R.id.tv_model);
    muserImage = (ImageView) view.findViewById(R.id.imageView_close);
    getLatLong();
    btnSplite = (Button) view.findViewById(R.id.btn_splite_rides);

    btnSplite.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent in = new Intent(getActivity(), SplitAddFrnd.class);
            startActivity(in);
        }
    });

    mphone.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            String uri = "tel:" + mphonenumber.getText().toString().trim();
            Intent intent = new Intent(Intent.ACTION_CALL);
            intent.setData(Uri.parse(uri));
            startActivity(intent);
        }
    });

    System.out.println("userId>>>>>>>>>>>>>>>>>>>>>" + mUserId);

    mname.setText(MyApplication.driverName);
    mlicence.setText(MyApplication.licenseId);
    mtaximodel.setText(MyApplication.vehicle);
    mphonenumber.setText(MyApplication.mobileNO);

    Picasso.with(getActivity()).load(MyApplication.imageUrl).error(R.mipmap.avtar).placeholder(R.mipmap.avtar)
            .into(muserImage);

    System.out.println("driverImageurl" + "chceck=" + MyApplication.imageUrl);

    mphonenumber.setText("Call To" + " " + MyApplication.driverName);

    final SinchClient sinchClient = Sinch.getSinchClientBuilder().context(getActivity()).userId(mUserId)
            .applicationKey("3b013f09-db1f-422e-ac7b-c6498e119612")
            .applicationSecret("LMhelEFYtUqms55VX1C7MQ==").environmentHost("sandbox.sinch.com").build();

    sinchClient.setSupportCalling(true);
    sinchClient.start();
    mphone.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            if (call == null) {
                if (MyApplication.mobileNO != null && !MyApplication.mobileNO.equals("")) {
                    call = sinchClient.getCallClient().callPhoneNumber("+" + MyApplication.mobileNO);
                    System.out.println("mobile_number" + MyApplication.mobileNO);
                    //call = sinchClient.getCallClient().callPhoneNumber("+918510834641");
                    try {
                        call.addCallListener(new SinchCallListener());
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                    mphonenumber.setText("Hang Up");
                }
            } else {
                call.hangup();
            }
        }
    });

    view.setFocusableInTouchMode(true);
    view.requestFocus();
    view.setOnKeyListener(new View.OnKeyListener() {
        @Override
        public boolean onKey(View v, int keyCode, KeyEvent event) {
            if (event.getAction() == KeyEvent.ACTION_UP && keyCode == KeyEvent.KEYCODE_BACK) {
                // handle back button's click listener

                if (keyCode == KeyEvent.KEYCODE_BACK) {

                    Fragment homeFragment = new FragmentMainScreen();
                    FragmentManager frgManager;
                    frgManager = getFragmentManager();
                    frgManager.beginTransaction().replace(R.id.fragment_switch, homeFragment).commit();

                    return true;
                }

                return true;
            }
            return false;
        }
    });

    return view;
}

---

From source file:com.launcher.silverfish.launcher.LauncherActivity.java

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    // Override the functionality of back and home key
    if ((keyCode == KeyEvent.KEYCODE_BACK || keyCode == KeyEvent.KEYCODE_HOME) && event.getRepeatCount() == 0) {
        event.startTracking();/*from w w w  . j a v  a  2 s  .  c o  m*/
        return true;
    }
    return super.onKeyDown(keyCode, event);
}

---

From source file:org.lol.reddit.activities.PostSubmitActivity.java

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

    if (resultCode != RESULT_OK)
        return;/*from  w  w w.j a v a2s  .c om*/

    final ProgressDialog progressDialog = new ProgressDialog(this);
    progressDialog.setTitle(getString(R.string.comment_reply_submitting_title));
    progressDialog.setMessage(getString(R.string.comment_reply_submitting_message));
    progressDialog.setIndeterminate(true);
    progressDialog.setCancelable(true);
    progressDialog.setCanceledOnTouchOutside(false);

    progressDialog.setOnCancelListener(new DialogInterface.OnCancelListener() {
        public void onCancel(final DialogInterface dialogInterface) {
            General.quickToast(PostSubmitActivity.this, getString(R.string.comment_reply_oncancel));
            progressDialog.dismiss();
        }
    });

    progressDialog.setOnKeyListener(new DialogInterface.OnKeyListener() {
        public boolean onKey(final DialogInterface dialogInterface, final int keyCode,
                final KeyEvent keyEvent) {

            if (keyCode == KeyEvent.KEYCODE_BACK) {
                General.quickToast(PostSubmitActivity.this, getString(R.string.comment_reply_oncancel));
                progressDialog.dismiss();
            }

            return true;
        }
    });

    final CacheManager cm = CacheManager.getInstance(this);

    final APIResponseHandler.ActionResponseHandler handler = new APIResponseHandler.ActionResponseHandler(
            this) {
        @Override
        protected void onSuccess() {
            General.UI_THREAD_HANDLER.post(new Runnable() {
                public void run() {
                    if (progressDialog.isShowing())
                        progressDialog.dismiss();
                    General.quickToast(PostSubmitActivity.this, getString(R.string.post_submit_done));
                    finish();
                }
            });
        }

        @Override
        protected void onCallbackException(Throwable t) {
            BugReportActivity.handleGlobalError(PostSubmitActivity.this, t);
        }

        @Override
        protected void onFailure(RequestFailureType type, Throwable t, StatusLine status,
                String readableMessage) {

            final RRError error = General.getGeneralErrorForFailure(context, type, t, status, null);

            General.UI_THREAD_HANDLER.post(new Runnable() {
                public void run() {
                    General.showResultDialog(PostSubmitActivity.this, error);
                    if (progressDialog.isShowing())
                        progressDialog.dismiss();
                }
            });
        }

        @Override
        protected void onFailure(final APIFailureType type) {

            final RRError error = General.getGeneralErrorForFailure(context, type);

            General.UI_THREAD_HANDLER.post(new Runnable() {
                public void run() {
                    General.showResultDialog(PostSubmitActivity.this, error);
                    if (progressDialog.isShowing())
                        progressDialog.dismiss();
                }
            });
        }
    };

    final boolean is_self = !typeSpinner.getSelectedItem().equals("Link");

    final RedditAccount selectedAccount = RedditAccountManager.getInstance(this)
            .getAccount((String) usernameSpinner.getSelectedItem());

    String subreddit = subredditEdit.getText().toString();
    final String title = titleEdit.getText().toString();
    final String text = textEdit.getText().toString();
    final String captchaId = data.getStringExtra("captchaId");
    final String captchaText = data.getStringExtra("captchaText");

    while (subreddit.startsWith("/"))
        subreddit = subreddit.substring(1);
    while (subreddit.startsWith("r/"))
        subreddit = subreddit.substring(2);
    while (subreddit.endsWith("/"))
        subreddit = subreddit.substring(0, subreddit.length() - 1);

    RedditAPI.submit(cm, handler, selectedAccount, is_self, subreddit, title, text, captchaId, captchaText,
            this);

    progressDialog.show();
}

---

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