diff options
Diffstat (limited to 'APG/src/org/thialfihar/android/apg/ui/ShareNfcBeamActivity.java')
-rw-r--r-- | APG/src/org/thialfihar/android/apg/ui/ShareNfcBeamActivity.java | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/APG/src/org/thialfihar/android/apg/ui/ShareNfcBeamActivity.java b/APG/src/org/thialfihar/android/apg/ui/ShareNfcBeamActivity.java new file mode 100644 index 000000000..d1a1c198c --- /dev/null +++ b/APG/src/org/thialfihar/android/apg/ui/ShareNfcBeamActivity.java @@ -0,0 +1,237 @@ +/* + * Copyright (C) 2013 Dominik Schürmann <dominik@dominikschuermann.de> + * Copyright (C) 2011 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.thialfihar.android.apg.ui; + +import java.io.IOException; +import java.io.InputStream; + +import net.nightwhistler.htmlspanner.HtmlSpanner; +import net.nightwhistler.htmlspanner.JellyBeanSpanFixTextView; + +import org.thialfihar.android.apg.Constants; +import org.thialfihar.android.apg.R; +import org.thialfihar.android.apg.helper.OtherHelper; +import org.thialfihar.android.apg.provider.ProviderHelper; + +import com.actionbarsherlock.app.SherlockFragmentActivity; +import com.actionbarsherlock.view.Menu; +import com.actionbarsherlock.view.MenuInflater; +import com.actionbarsherlock.view.MenuItem; + +import android.annotation.TargetApi; +import android.content.Intent; +import android.nfc.NdefMessage; +import android.nfc.NdefRecord; +import android.nfc.NfcAdapter; +import android.nfc.NfcAdapter.CreateNdefMessageCallback; +import android.nfc.NfcEvent; +import android.os.Build; +import android.os.Bundle; +import android.os.Parcelable; +import android.util.Log; +import android.widget.Toast; +import android.nfc.NfcAdapter.OnNdefPushCompleteCallback; +import android.os.Handler; +import android.os.Message; +import android.provider.Settings; +import android.text.method.LinkMovementMethod; + +@TargetApi(Build.VERSION_CODES.JELLY_BEAN) +public class ShareNfcBeamActivity extends SherlockFragmentActivity implements + CreateNdefMessageCallback, OnNdefPushCompleteCallback { + public static final String ACTION_SHARE_WITH_NFC = Constants.INTENT_PREFIX + "SHARE_WITH_NFC"; + + public static final String EXTRA_MASTER_KEY_ID = "masterKeyId"; + + NfcAdapter mNfcAdapter; + + byte[] mSharedKeyringBytes; + + private static final int MESSAGE_SENT = 1; + + @Override + public void onCreate(Bundle savedInstanceState) { + super.onCreate(savedInstanceState); + + if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) { + Toast.makeText(this, + getString(R.string.error) + ": " + getString(R.string.error_jellyBeanNeeded), + Toast.LENGTH_LONG).show(); + finish(); + } else { + // Check for available NFC Adapter + mNfcAdapter = NfcAdapter.getDefaultAdapter(this); + if (mNfcAdapter == null) { + Toast.makeText(this, + getString(R.string.error) + ": " + getString(R.string.error_nfcNeeded), + Toast.LENGTH_LONG).show(); + finish(); + } else { + buildView(); + + // handle actions after verifying that nfc works... + handleActions(getIntent()); + } + } + } + + protected void handleActions(Intent intent) { + String action = intent.getAction(); + Bundle extras = intent.getExtras(); + + if (extras == null) { + extras = new Bundle(); + } + + if (ACTION_SHARE_WITH_NFC.equals(action)) { + long masterKeyId = getIntent().getExtras().getLong(EXTRA_MASTER_KEY_ID); + + // get public keyring as byte array + mSharedKeyringBytes = ProviderHelper.getPublicKeyRingsAsByteArray(this, + new long[] { masterKeyId }); + + // Register callback to set NDEF message + mNfcAdapter.setNdefPushMessageCallback(this, this); + // Register callback to listen for message-sent success + mNfcAdapter.setOnNdefPushCompleteCallback(this, this); + } + } + + /** + * Parses the NDEF Message from the intent and prints to the TextView + */ + void handleActionNdefDiscovered(Intent intent) { + Parcelable[] rawMsgs = intent.getParcelableArrayExtra(NfcAdapter.EXTRA_NDEF_MESSAGES); + // only one message sent during the beam + NdefMessage msg = (NdefMessage) rawMsgs[0]; + // record 0 contains the MIME type, record 1 is the AAR, if present + byte[] receivedKeyringBytes = msg.getRecords()[0].getPayload(); + + + +// Log.d(Constants.TAG, new String()); + } + + private void buildView() { + // load html from html file from /res/raw + InputStream inputStreamText = getResources().openRawResource(R.raw.nfc_beam_share); + + setContentView(R.layout.share_nfc_beam); + + JellyBeanSpanFixTextView text = (JellyBeanSpanFixTextView) findViewById(R.id.nfc_beam_text); + + // load html into textview + HtmlSpanner htmlSpanner = new HtmlSpanner(); + htmlSpanner.setStripExtraWhiteSpace(true); + try { + text.setText(htmlSpanner.fromHtml(inputStreamText)); + } catch (IOException e) { + Log.e(Constants.TAG, "Error while reading raw resources as stream", e); + } + + // make links work + text.setMovementMethod(LinkMovementMethod.getInstance()); + + // no flickering when clicking textview for Android < 4 + text.setTextColor(getResources().getColor(android.R.color.black)); + + // set actionbar without home button if called from another app + OtherHelper.setActionBarBackButton(this); + } + + /** + * Implementation for the CreateNdefMessageCallback interface + */ + @Override + public NdefMessage createNdefMessage(NfcEvent event) { + /** + * When a device receives a push with an AAR in it, the application specified in the AAR is + * guaranteed to run. The AAR overrides the tag dispatch system. You can add it back in to + * guarantee that this activity starts when receiving a beamed message. For now, this code + * uses the tag dispatch system. + */ + NdefMessage msg = new NdefMessage(NdefRecord.createMime(Constants.NFC_MIME, + mSharedKeyringBytes), NdefRecord.createApplicationRecord(Constants.PACKAGE_NAME)); + return msg; + } + + /** + * Implementation for the OnNdefPushCompleteCallback interface + */ + @Override + public void onNdefPushComplete(NfcEvent arg0) { + // A handler is needed to send messages to the activity when this + // callback occurs, because it happens from a binder thread + mHandler.obtainMessage(MESSAGE_SENT).sendToTarget(); + } + + /** This handler receives a message from onNdefPushComplete */ + private final Handler mHandler = new Handler() { + @Override + public void handleMessage(Message msg) { + switch (msg.what) { + case MESSAGE_SENT: + Toast.makeText(getApplicationContext(), "Message sent!", Toast.LENGTH_LONG).show(); + break; + } + } + }; + + @Override + public void onResume() { + super.onResume(); + // Check to see that the Activity started due to an Android Beam + if (NfcAdapter.ACTION_NDEF_DISCOVERED.equals(getIntent().getAction())) { + handleActionNdefDiscovered(getIntent()); + } + } + + @Override + public void onNewIntent(Intent intent) { + // onResume gets called after this to handle the intent + setIntent(intent); + } + + @Override + public boolean onCreateOptionsMenu(Menu menu) { + MenuInflater inflater = getSupportMenuInflater(); + inflater.inflate(R.menu.nfc_beam, menu); + return true; + } + + @Override + public boolean onOptionsItemSelected(MenuItem item) { + switch (item.getItemId()) { + + case android.R.id.home: + // app icon in Action Bar clicked; go to KeyListPublicActivity + Intent intent = new Intent(this, KeyListPublicActivity.class); + intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); + startActivity(intent); + return true; + + case R.id.menu_settings: + Intent intentSettings = new Intent(Settings.ACTION_NFCSHARING_SETTINGS); + startActivity(intentSettings); + return true; + + default: + return super.onOptionsItemSelected(item); + } + } +} |