open-keychain/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/PassphraseDialogActivity.java
2018-10-02 14:10:26 +02:00

682 lines
31 KiB
Java

/*
* Copyright (C) 2017 Schürmann & Breitmoser GbR
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sufficientlysecure.keychain.ui;
import android.app.Activity;
import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.SystemClock;
import android.support.annotation.NonNull;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.FragmentActivity;
import android.support.v7.app.AlertDialog;
import android.text.Editable;
import android.text.InputFilter;
import android.text.InputType;
import android.text.TextWatcher;
import android.text.method.PasswordTransformationMethod;
import android.view.ContextThemeWrapper;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.WindowManager;
import android.view.inputmethod.EditorInfo;
import android.view.inputmethod.InputMethodManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.ViewAnimator;
import org.openintents.openpgp.util.OpenPgpUtils;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.model.SubKey.UnifiedKeyInfo;
import org.sufficientlysecure.keychain.pgp.CanonicalizedSecretKey;
import org.sufficientlysecure.keychain.pgp.CanonicalizedSecretKey.SecretKeyType;
import org.sufficientlysecure.keychain.pgp.CanonicalizedSecretKeyRing;
import org.sufficientlysecure.keychain.pgp.KeyRing;
import org.sufficientlysecure.keychain.pgp.exception.PgpGeneralException;
import org.sufficientlysecure.keychain.daos.KeyRepository;
import org.sufficientlysecure.keychain.daos.KeyRepository.NotFoundException;
import org.sufficientlysecure.keychain.service.PassphraseCacheService;
import org.sufficientlysecure.keychain.service.input.CryptoInputParcel;
import org.sufficientlysecure.keychain.service.input.RequiredInputParcel;
import org.sufficientlysecure.keychain.service.input.RequiredInputParcel.RequiredInputType;
import org.sufficientlysecure.keychain.ui.dialog.CustomAlertDialogBuilder;
import org.sufficientlysecure.keychain.ui.util.ThemeChanger;
import org.sufficientlysecure.keychain.ui.widget.CacheTTLSpinner;
import org.sufficientlysecure.keychain.ui.widget.PrefixedEditText;
import org.sufficientlysecure.keychain.util.Passphrase;
import org.sufficientlysecure.keychain.util.Preferences;
import timber.log.Timber;
/**
* We can not directly create a dialog on the application context.
* This activity encapsulates a DialogFragment to emulate a dialog.
* NOTE: If no CryptoInputParcel is passed via EXTRA_CRYPTO_INPUT, the CryptoInputParcel is created
* internally and is NOT meant to be used by signing operations before adding a signature time
*/
public class PassphraseDialogActivity extends FragmentActivity {
public static final String RESULT_CRYPTO_INPUT = "result_data";
public static final String EXTRA_REQUIRED_INPUT = "required_input";
public static final String EXTRA_CRYPTO_INPUT = "crypto_input";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// do not allow screenshots of passphrase input
// to prevent "too easy" passphrase theft by root apps
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.HONEYCOMB) {
getWindow().setFlags(
WindowManager.LayoutParams.FLAG_SECURE,
WindowManager.LayoutParams.FLAG_SECURE
);
}
CryptoInputParcel cryptoInputParcel = getIntent().getParcelableExtra(EXTRA_CRYPTO_INPUT);
if (cryptoInputParcel == null) {
cryptoInputParcel = CryptoInputParcel.createCryptoInputParcel();
getIntent().putExtra(EXTRA_CRYPTO_INPUT, cryptoInputParcel);
}
// this activity itself has no content view (see manifest)
RequiredInputParcel requiredInput = getIntent().getParcelableExtra(EXTRA_REQUIRED_INPUT);
if (requiredInput.mType != RequiredInputType.PASSPHRASE) {
return;
}
// handle empty passphrases by directly returning an empty crypto input parcel
try {
KeyRepository keyRepository = KeyRepository.create(this);
// use empty passphrase for empty passphrase
if (keyRepository.getSecretKeyType(requiredInput.getSubKeyId()) == SecretKeyType.PASSPHRASE_EMPTY) {
// also return passphrase back to activity
Intent returnIntent = new Intent();
cryptoInputParcel = cryptoInputParcel.withPassphrase(new Passphrase(""), requiredInput.getSubKeyId());
returnIntent.putExtra(RESULT_CRYPTO_INPUT, cryptoInputParcel);
setResult(RESULT_OK, returnIntent);
finish();
}
} catch (NotFoundException e) {
Timber.e(e, "Key not found?!");
setResult(RESULT_CANCELED);
finish();
}
}
@Override
protected void onResumeFragments() {
super.onResumeFragments();
/* Show passphrase dialog to cache a new passphrase the user enters for using it later for
* encryption. Based on mSecretKeyId it asks for a passphrase to open a private key or it asks
* for a symmetric passphrase
*/
PassphraseDialogFragment frag = new PassphraseDialogFragment();
frag.setArguments(getIntent().getExtras());
frag.show(getSupportFragmentManager(), "passphraseDialog");
}
@Override
protected void onPause() {
super.onPause();
DialogFragment dialog = (DialogFragment) getSupportFragmentManager().findFragmentByTag("passphraseDialog");
if (dialog != null) {
dialog.dismiss();
}
}
public static class PassphraseDialogFragment extends DialogFragment implements TextView.OnEditorActionListener {
private EditText mPassphraseEditText;
private TextView mPassphraseText;
private EditText[] mBackupCodeEditText;
private boolean mIsCancelled = false;
private RequiredInputParcel mRequiredInput;
private ViewAnimator mLayout;
private CacheTTLSpinner mTimeToLiveSpinner;
@NonNull
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
final Activity activity = getActivity();
ContextThemeWrapper theme = ThemeChanger.getDialogThemeWrapper(activity);
mRequiredInput = getArguments().getParcelable(EXTRA_REQUIRED_INPUT);
CustomAlertDialogBuilder alert = new CustomAlertDialogBuilder(theme);
// No title, see http://www.google.com/design/spec/components/dialogs.html#dialogs-alerts
//alert.setTitle()
if (mRequiredInput.mType == RequiredInputType.BACKUP_CODE) {
LayoutInflater inflater = LayoutInflater.from(theme);
View view = inflater.inflate(R.layout.passphrase_dialog_backup_code, null);
alert.setView(view);
mBackupCodeEditText = new EditText[6];
mBackupCodeEditText[0] = view.findViewById(R.id.backup_code_1);
mBackupCodeEditText[1] = view.findViewById(R.id.backup_code_2);
mBackupCodeEditText[2] = view.findViewById(R.id.backup_code_3);
mBackupCodeEditText[3] = view.findViewById(R.id.backup_code_4);
mBackupCodeEditText[4] = view.findViewById(R.id.backup_code_5);
mBackupCodeEditText[5] = view.findViewById(R.id.backup_code_6);
setupEditTextFocusNext(mBackupCodeEditText, false);
AlertDialog dialog = alert.create();
dialog.setButton(DialogInterface.BUTTON_POSITIVE,
activity.getString(R.string.btn_unlock), (DialogInterface.OnClickListener) null);
return dialog;
}
if (mRequiredInput.mType == RequiredInputType.NUMERIC_9X4 ||
mRequiredInput.mType == RequiredInputType.NUMERIC_9X4_AUTOCRYPT) {
LayoutInflater inflater = LayoutInflater.from(theme);
View view = inflater.inflate(R.layout.passphrase_dialog_numeric_9x4, null);
alert.setView(view);
mBackupCodeEditText = new EditText[9];
mBackupCodeEditText[0] = view.findViewById(R.id.transfer_code_block_1);
mBackupCodeEditText[1] = view.findViewById(R.id.transfer_code_block_2);
mBackupCodeEditText[2] = view.findViewById(R.id.transfer_code_block_3);
mBackupCodeEditText[3] = view.findViewById(R.id.transfer_code_block_4);
mBackupCodeEditText[4] = view.findViewById(R.id.transfer_code_block_5);
mBackupCodeEditText[5] = view.findViewById(R.id.transfer_code_block_6);
mBackupCodeEditText[6] = view.findViewById(R.id.transfer_code_block_7);
mBackupCodeEditText[7] = view.findViewById(R.id.transfer_code_block_8);
mBackupCodeEditText[8] = view.findViewById(R.id.transfer_code_block_9);
if (mRequiredInput.hasPassphraseBegin()) {
String beginChars = mRequiredInput.getPassphraseBegin();
int inputLength = 4 - beginChars.length();
setupEditTextFocusNext(mBackupCodeEditText, true);
PrefixedEditText prefixEditText = (PrefixedEditText) mBackupCodeEditText[0];
if (beginChars.matches("\\d\\d")) {
prefixEditText.setPrefix(beginChars);
prefixEditText.setHint("1234".substring(inputLength));
prefixEditText.setFilters(new InputFilter[] { new InputFilter.LengthFilter(inputLength) });
}
} else {
setupEditTextFocusNext(mBackupCodeEditText, false);
}
if (mRequiredInput.mType == RequiredInputType.NUMERIC_9X4_AUTOCRYPT) {
TextView promptText = view.findViewById(R.id.passphrase_text);
promptText.setText(R.string.passphrase_transfer_autocrypt);
}
AlertDialog dialog = alert.create();
dialog.setButton(DialogInterface.BUTTON_POSITIVE,
activity.getString(R.string.btn_proceed), (DialogInterface.OnClickListener) null);
return dialog;
}
LayoutInflater inflater = LayoutInflater.from(theme);
mLayout = (ViewAnimator) inflater.inflate(R.layout.passphrase_dialog, null);
alert.setView(mLayout);
mPassphraseText = mLayout.findViewById(R.id.passphrase_text);
mPassphraseEditText = mLayout.findViewById(R.id.passphrase_passphrase);
View vTimeToLiveLayout = mLayout.findViewById(R.id.remember_layout);
vTimeToLiveLayout.setVisibility(mRequiredInput.mSkipCaching ? View.GONE : View.VISIBLE);
mTimeToLiveSpinner = mLayout.findViewById(R.id.ttl_spinner);
int ttlSeconds = Preferences.getPreferences(getContext()).getCacheTtlSeconds();
mTimeToLiveSpinner.setSelectedTimeToLive(ttlSeconds);
alert.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
String userId;
CanonicalizedSecretKey.SecretKeyType keyType = CanonicalizedSecretKey.SecretKeyType.PASSPHRASE;
String message;
String hint;
if (mRequiredInput.mType == RequiredInputType.PASSPHRASE_SYMMETRIC) {
message = getString(R.string.passphrase_for_symmetric_encryption);
hint = getString(R.string.label_passphrase);
} else {
try {
long[] subKeyIds = mRequiredInput.getSubKeyIds();
if (subKeyIds.length > 1) {
message = getString(R.string.passphrase_for_any);
hint = getString(R.string.label_passphrase);
} else {
long subKeyId = subKeyIds[0];
KeyRepository keyRepository = KeyRepository.create(getContext());
Long masterKeyId = keyRepository.getMasterKeyIdBySubkeyId(subKeyId);
UnifiedKeyInfo unifiedKeyInfo = keyRepository.getUnifiedKeyInfo(masterKeyId);
if (unifiedKeyInfo == null) {
throw new NotFoundException();
}
// yes the inner try/catch block is necessary, otherwise the final variable
// above can't be statically verified to have been set in all cases because
// the catch clause doesn't return.
String mainUserId = unifiedKeyInfo.user_id();
OpenPgpUtils.UserId mainUserIdSplit = KeyRing.splitUserId(mainUserId);
if (mainUserIdSplit.name != null) {
userId = mainUserIdSplit.name;
} else {
userId = getString(R.string.user_id_no_name);
}
keyType = keyRepository.getSecretKeyType(subKeyId);
switch (keyType) {
case PASSPHRASE:
message = getString(R.string.passphrase_for, userId);
hint = getString(R.string.label_passphrase);
break;
case DIVERT_TO_CARD:
message = getString(R.string.security_token_pin_for, userId);
hint = getString(R.string.label_pin);
break;
// special case: empty passphrase just returns the empty passphrase
case PASSPHRASE_EMPTY:
finishCaching(new Passphrase(""), subKeyId);
default:
throw new AssertionError("Unhandled SecretKeyType (should not happen)");
}
}
} catch (NotFoundException e) {
alert.setTitle(R.string.title_key_not_found);
alert.setMessage(getString(R.string.key_not_found, mRequiredInput.getSubKeyId()));
alert.setPositiveButton(android.R.string.ok, (dialog, which) -> dismiss());
alert.setCancelable(false);
return alert.create();
}
}
mPassphraseText.setText(message);
mPassphraseEditText.setHint(hint);
openKeyboard(mPassphraseEditText);
mPassphraseEditText.setImeActionLabel(getString(android.R.string.ok), EditorInfo.IME_ACTION_DONE);
mPassphraseEditText.setOnEditorActionListener(this);
final ImageButton keyboard = mLayout.findViewById(R.id.passphrase_keyboard);
if (keyType == CanonicalizedSecretKey.SecretKeyType.DIVERT_TO_CARD) {
if (Preferences.getPreferences(activity).useNumKeypadForSecurityTokenPin()) {
setKeyboardNumeric(keyboard);
} else {
setKeyboardAlphabetic(keyboard);
}
keyboard.setVisibility(View.VISIBLE);
keyboard.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Preferences prefs = Preferences.getPreferences(activity);
if (prefs.useNumKeypadForSecurityTokenPin()) {
prefs.setUseNumKeypadForSecurityTokenPin(false);
setKeyboardAlphabetic(keyboard);
} else {
prefs.setUseNumKeypadForSecurityTokenPin(true);
setKeyboardNumeric(keyboard);
}
}
});
} else {
mPassphraseEditText.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);
keyboard.setVisibility(View.GONE);
}
mPassphraseEditText.setTransformationMethod(PasswordTransformationMethod.getInstance());
AlertDialog dialog = alert.create();
dialog.setButton(DialogInterface.BUTTON_POSITIVE,
activity.getString(R.string.btn_unlock), (DialogInterface.OnClickListener) null);
return dialog;
}
private void setKeyboardNumeric(ImageButton keyboard) {
mPassphraseEditText.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_TEXT_VARIATION_PASSWORD);
// somehow InputType.TYPE_TEXT_VARIATION_PASSWORD is not enough...
mPassphraseEditText.setTransformationMethod(PasswordTransformationMethod.getInstance());
keyboard.setImageResource(R.drawable.ic_alphabetical_black_24dp);
keyboard.setContentDescription(getString(R.string.passphrase_keyboard_hint_alpha));
}
private void setKeyboardAlphabetic(ImageButton keyboard) {
mPassphraseEditText.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);
// somehow InputType.TYPE_TEXT_VARIATION_PASSWORD is not enough...
mPassphraseEditText.setTransformationMethod(PasswordTransformationMethod.getInstance());
keyboard.setImageResource(R.drawable.ic_numeric_black_24dp);
keyboard.setContentDescription(getString(R.string.passphrase_keyboard_hint_numeric));
}
/**
* Hack to open keyboard.
* This is the only method that I found to work across all Android versions
* http://turbomanage.wordpress.com/2012/05/02/show-soft-keyboard-automatically-when-edittext-receives-focus/
* Notes:
* * onCreateView can't be used because we want to add buttons to the dialog
* * opening in onActivityCreated does not work on Android 4.4
*/
private void openKeyboard(final TextView textView) {
textView.setOnFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
textView.post(new Runnable() {
@Override
public void run() {
if (getActivity() == null || textView == null) {
return;
}
InputMethodManager imm = (InputMethodManager) getActivity()
.getSystemService(Context.INPUT_METHOD_SERVICE);
imm.showSoftInput(textView, InputMethodManager.SHOW_IMPLICIT);
}
});
}
});
textView.requestFocus();
}
private static void setupEditTextFocusNext(EditText[] backupCodes, boolean hasPrefix) {
for (int i = 0; i < backupCodes.length - 1; i++) {
int idx = i;
backupCodes[i].addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
boolean inserting = before < count;
int maxLen = hasPrefix && idx == 0 ? 2 : 4;
boolean cursorAtEnd = (start + count) == maxLen;
if (inserting && cursorAtEnd) {
backupCodes[idx + 1].requestFocus();
}
}
@Override
public void afterTextChanged(Editable s) {
}
});
}
}
@Override
public void onStart() {
super.onStart();
// Override the default behavior so the dialog is NOT dismissed on click
final Button positive = ((AlertDialog) getDialog()).getButton(DialogInterface.BUTTON_POSITIVE);
positive.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (mRequiredInput.mType == RequiredInputType.BACKUP_CODE) {
StringBuilder backupCodeInput = new StringBuilder(26);
for (EditText editText : mBackupCodeEditText) {
if (editText.getText().length() < 4) {
return;
}
backupCodeInput.append(editText.getText());
backupCodeInput.append('-');
}
backupCodeInput.deleteCharAt(backupCodeInput.length() - 1);
Passphrase passphrase = new Passphrase(backupCodeInput.toString());
finishCaching(passphrase, null);
return;
}
if (mRequiredInput.mType == RequiredInputType.NUMERIC_9X4 ||
mRequiredInput.mType == RequiredInputType.NUMERIC_9X4_AUTOCRYPT) {
StringBuilder backupCodeInput = new StringBuilder(36);
if (mRequiredInput.hasPassphraseBegin()) {
backupCodeInput.append(mRequiredInput.getPassphraseBegin());
}
for (EditText editText : mBackupCodeEditText) {
if (editText.getText().length() != 2 && editText.getText().length() != 4) {
return;
}
backupCodeInput.append(editText.getText());
backupCodeInput.append('-');
}
backupCodeInput.deleteCharAt(backupCodeInput.length() - 1);
Passphrase passphrase = new Passphrase(backupCodeInput.toString());
finishCaching(passphrase, null);
return;
}
final Passphrase passphrase = new Passphrase(mPassphraseEditText);
final int timeToLiveSeconds = mTimeToLiveSpinner.getSelectedTimeToLive();
Preferences.getPreferences(getContext()).setCacheTtlSeconds(timeToLiveSeconds);
// Early breakout if we are dealing with a symmetric key
if (mRequiredInput.mType == RequiredInputType.PASSPHRASE_SYMMETRIC) {
if (!mRequiredInput.mSkipCaching) {
PassphraseCacheService.addCachedPassphrase(getActivity(),
Constants.key.symmetric, Constants.key.symmetric, passphrase,
getString(R.string.passp_cache_notif_pwd), timeToLiveSeconds);
}
finishCaching(passphrase, null);
return;
}
checkPassphraseAndFinishCaching(positive, passphrase, timeToLiveSeconds);
}
});
}
private void checkPassphraseAndFinishCaching(final Button positive, final Passphrase passphrase,
final int timeToLiveSeconds) {
mLayout.setDisplayedChild(1);
positive.setEnabled(false);
new AsyncTask<Void, Void, CanonicalizedSecretKey>() {
@Override
protected CanonicalizedSecretKey doInBackground(Void... params) {
try {
long timeBeforeOperation = SystemClock.elapsedRealtime();
CanonicalizedSecretKey canonicalizedSecretKey = null;
for (long subKeyId : mRequiredInput.getSubKeyIds()) {
KeyRepository keyRepository = KeyRepository.create(getContext());
Long masterKeyId = keyRepository.getMasterKeyIdBySubkeyId(subKeyId);
if (masterKeyId == null) {
continue;
}
CanonicalizedSecretKeyRing secretKeyRing = keyRepository.getCanonicalizedSecretKeyRing(masterKeyId);
CanonicalizedSecretKey secretKeyToUnlock = secretKeyRing.getSecretKey(subKeyId);
// this is the operation may take a very long time (100ms to several seconds!)
boolean unlockSucceeded = secretKeyToUnlock.unlock(passphrase);
if (unlockSucceeded) {
canonicalizedSecretKey = secretKeyToUnlock;
}
}
// if it didn't take that long, give the user time to appreciate the progress bar
long operationTime = SystemClock.elapsedRealtime() - timeBeforeOperation;
if (operationTime < 100) {
try {
Thread.sleep(100 - operationTime);
} catch (InterruptedException e) {
// ignore
}
}
return canonicalizedSecretKey;
} catch (NotFoundException | PgpGeneralException e) {
Toast.makeText(getActivity(), R.string.error_could_not_extract_private_key,
Toast.LENGTH_SHORT).show();
getActivity().setResult(RESULT_CANCELED);
dismiss();
getActivity().finish();
return null;
}
}
/** Handle a good or bad passphrase. This happens in the UI thread! */
@Override
protected void onPostExecute(CanonicalizedSecretKey unlockedKey) {
super.onPostExecute(unlockedKey);
// if we were cancelled in the meantime, the result isn't relevant anymore
if (mIsCancelled) {
return;
}
// if the passphrase was wrong, reset and re-enable the dialogue
if (unlockedKey == null) {
mPassphraseEditText.setText("");
mPassphraseEditText.setError(getString(R.string.wrong_passphrase));
mLayout.setDisplayedChild(0);
positive.setEnabled(true);
return;
}
// cache the new passphrase as specified in CryptoInputParcel
Timber.d("Everything okay!");
if (mRequiredInput.mSkipCaching) {
Timber.d("Not caching entered passphrase!");
} else {
Timber.d("Caching entered passphrase");
PassphraseCacheService.addCachedPassphrase(getActivity(),
unlockedKey.getRing().getMasterKeyId(), unlockedKey.getKeyId(), passphrase,
unlockedKey.getRing().getPrimaryUserIdWithFallback(), timeToLiveSeconds);
}
finishCaching(passphrase, unlockedKey.getKeyId());
}
}.execute();
}
private void finishCaching(Passphrase passphrase, Long subKeyId) {
// any indication this isn't needed anymore, don't do it.
if (mIsCancelled || getActivity() == null) {
return;
}
CryptoInputParcel inputParcel = getArguments().getParcelable(EXTRA_CRYPTO_INPUT);
// noinspection ConstantConditions, we handle the non-null case in PassphraseDialogActivity.onCreate()
inputParcel = inputParcel.withPassphrase(passphrase, subKeyId);
((PassphraseDialogActivity) getActivity()).handleResult(inputParcel);
dismiss();
getActivity().finish();
}
@Override
public void onCancel(DialogInterface dialog) {
super.onCancel(dialog);
// note we need no synchronization here, this variable is only accessed in the ui thread
mIsCancelled = true;
getActivity().setResult(RESULT_CANCELED);
getActivity().finish();
}
@Override
public void onDismiss(DialogInterface dialog) {
super.onDismiss(dialog);
hideKeyboard();
}
private void hideKeyboard() {
if (getActivity() == null) {
return;
}
InputMethodManager inputManager = (InputMethodManager) getActivity()
.getSystemService(Context.INPUT_METHOD_SERVICE);
inputManager.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0);
}
@Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
// Associate the "done" button on the soft keyboard with the okay button in the view
// and the Enter Key, in case a hard keyboard is used
if (EditorInfo.IME_ACTION_DONE == actionId ||
(actionId == EditorInfo.IME_ACTION_UNSPECIFIED &&
event.getAction() == KeyEvent.ACTION_DOWN &&
event.getKeyCode() == KeyEvent.KEYCODE_ENTER)) {
AlertDialog dialog = ((AlertDialog) getDialog());
Button bt = dialog.getButton(AlertDialog.BUTTON_POSITIVE);
bt.performClick();
return true;
}
return false;
}
}
/**
* Defines how the result of this activity is returned.
* Is overwritten in RemotePassphraseDialogActivity
*/
protected void handleResult(CryptoInputParcel inputParcel) {
// also return passphrase back to activity
Intent returnIntent = new Intent();
returnIntent.putExtra(RESULT_CRYPTO_INPUT, inputParcel);
setResult(RESULT_OK, returnIntent);
}
}