Java tutorial
/* * Copyright (C) 2014-2017 Open Whisper Systems * * 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.thoughtcrime.securesms; import android.annotation.SuppressLint; import android.content.Context; import android.content.Intent; import android.database.Cursor; import android.net.Uri; import android.os.AsyncTask; import android.os.Bundle; import android.os.Parcel; import android.os.Process; import android.provider.OpenableColumns; import android.support.annotation.NonNull; import android.support.annotation.Nullable; import android.support.v4.widget.SwipeRefreshLayout; import android.support.v7.app.ActionBar; import android.support.v7.widget.Toolbar; import org.thoughtcrime.securesms.conversation.ConversationActivity; import org.thoughtcrime.securesms.logging.Log; import android.view.MenuItem; import android.view.View; import android.widget.ImageView; import org.thoughtcrime.securesms.components.SearchToolbar; import org.thoughtcrime.securesms.contacts.ContactsCursorLoader.DisplayMode; import org.thoughtcrime.securesms.database.Address; import org.thoughtcrime.securesms.database.DatabaseFactory; import org.thoughtcrime.securesms.database.ThreadDatabase; import org.thoughtcrime.securesms.mediasend.Media; import org.thoughtcrime.securesms.mms.PartAuthority; import org.thoughtcrime.securesms.providers.BlobProvider; import org.thoughtcrime.securesms.recipients.Recipient; import org.thoughtcrime.securesms.util.DynamicLanguage; import org.thoughtcrime.securesms.util.DynamicNoActionBarTheme; import org.thoughtcrime.securesms.util.DynamicTheme; import org.thoughtcrime.securesms.util.FileUtils; import org.thoughtcrime.securesms.util.MediaUtil; import org.thoughtcrime.securesms.util.TextSecurePreferences; import org.thoughtcrime.securesms.util.ViewUtil; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.util.ArrayList; /** * An activity to quickly share content with contacts * * @author Jake McGinty */ public class ShareActivity extends PassphraseRequiredActionBarActivity implements ContactSelectionListFragment.OnContactSelectedListener, SwipeRefreshLayout.OnRefreshListener { private static final String TAG = ShareActivity.class.getSimpleName(); public static final String EXTRA_THREAD_ID = "thread_id"; public static final String EXTRA_ADDRESS_MARSHALLED = "address_marshalled"; public static final String EXTRA_DISTRIBUTION_TYPE = "distribution_type"; private final DynamicTheme dynamicTheme = new DynamicNoActionBarTheme(); private final DynamicLanguage dynamicLanguage = new DynamicLanguage(); private ContactSelectionListFragment contactsFragment; private SearchToolbar searchToolbar; private ImageView searchAction; private View progressWheel; private Uri resolvedExtra; private String mimeType; private boolean isPassingAlongMedia; @Override protected void onPreCreate() { dynamicTheme.onCreate(this); dynamicLanguage.onCreate(this); } @Override protected void onCreate(Bundle icicle, boolean ready) { if (!getIntent().hasExtra(ContactSelectionListFragment.DISPLAY_MODE)) { getIntent().putExtra(ContactSelectionListFragment.DISPLAY_MODE, TextSecurePreferences.isSmsEnabled(this) ? DisplayMode.FLAG_ALL : DisplayMode.FLAG_PUSH | DisplayMode.FLAG_GROUPS); } getIntent().putExtra(ContactSelectionListFragment.REFRESHABLE, false); getIntent().putExtra(ContactSelectionListFragment.RECENTS, true); setContentView(R.layout.share_activity); initializeToolbar(); initializeResources(); initializeSearch(); initializeMedia(); } @Override protected void onNewIntent(Intent intent) { Log.i(TAG, "onNewIntent()"); super.onNewIntent(intent); setIntent(intent); initializeMedia(); } @Override public void onResume() { Log.i(TAG, "onResume()"); super.onResume(); dynamicTheme.onResume(this); dynamicLanguage.onResume(this); } @Override public void onPause() { super.onPause(); if (!isPassingAlongMedia && resolvedExtra != null) { BlobProvider.getInstance().delete(this, resolvedExtra); if (!isFinishing()) { finish(); } } } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case android.R.id.home: onBackPressed(); return true; } return super.onOptionsItemSelected(item); } @Override public void onBackPressed() { if (searchToolbar.isVisible()) searchToolbar.collapse(); else super.onBackPressed(); } private void initializeToolbar() { Toolbar toolbar = findViewById(R.id.toolbar); setSupportActionBar(toolbar); ActionBar actionBar = getSupportActionBar(); if (actionBar != null) { actionBar.setDisplayHomeAsUpEnabled(true); } } private void initializeResources() { progressWheel = findViewById(R.id.progress_wheel); searchToolbar = findViewById(R.id.search_toolbar); searchAction = findViewById(R.id.search_action); contactsFragment = (ContactSelectionListFragment) getSupportFragmentManager() .findFragmentById(R.id.contact_selection_list_fragment); contactsFragment.setOnContactSelectedListener(this); contactsFragment.setOnRefreshListener(this); } private void initializeSearch() { searchAction .setOnClickListener(v -> searchToolbar.display(searchAction.getX() + (searchAction.getWidth() / 2), searchAction.getY() + (searchAction.getHeight() / 2))); searchToolbar.setListener(new SearchToolbar.SearchListener() { @Override public void onSearchTextChange(String text) { if (contactsFragment != null) { contactsFragment.setQueryFilter(text); } } @Override public void onSearchClosed() { if (contactsFragment != null) { contactsFragment.resetQueryFilter(); } } }); } private void initializeMedia() { final Context context = this; isPassingAlongMedia = false; Uri streamExtra = getIntent().getParcelableExtra(Intent.EXTRA_STREAM); mimeType = getMimeType(streamExtra); if (streamExtra != null && PartAuthority.isLocalUri(streamExtra)) { isPassingAlongMedia = true; resolvedExtra = streamExtra; handleResolvedMedia(getIntent(), false); } else { contactsFragment.getView().setVisibility(View.GONE); progressWheel.setVisibility(View.VISIBLE); new ResolveMediaTask(context).executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, streamExtra); } } private void handleResolvedMedia(Intent intent, boolean animate) { long threadId = intent.getLongExtra(EXTRA_THREAD_ID, -1); int distributionType = intent.getIntExtra(EXTRA_DISTRIBUTION_TYPE, -1); Address address = null; if (intent.hasExtra(EXTRA_ADDRESS_MARSHALLED)) { Parcel parcel = Parcel.obtain(); byte[] marshalled = intent.getByteArrayExtra(EXTRA_ADDRESS_MARSHALLED); parcel.unmarshall(marshalled, 0, marshalled.length); parcel.setDataPosition(0); address = parcel.readParcelable(getClassLoader()); parcel.recycle(); } boolean hasResolvedDestination = threadId != -1 && address != null && distributionType != -1; if (!hasResolvedDestination && animate) { ViewUtil.fadeIn(contactsFragment.getView(), 300); ViewUtil.fadeOut(progressWheel, 300); } else if (!hasResolvedDestination) { contactsFragment.getView().setVisibility(View.VISIBLE); progressWheel.setVisibility(View.GONE); } else { createConversation(threadId, address, distributionType); } } private void createConversation(long threadId, Address address, int distributionType) { final Intent intent = getBaseShareIntent(ConversationActivity.class); intent.putExtra(ConversationActivity.ADDRESS_EXTRA, address); intent.putExtra(ConversationActivity.THREAD_ID_EXTRA, threadId); intent.putExtra(ConversationActivity.DISTRIBUTION_TYPE_EXTRA, distributionType); isPassingAlongMedia = true; startActivity(intent); } private Intent getBaseShareIntent(final @NonNull Class<?> target) { final Intent intent = new Intent(this, target); final String textExtra = getIntent().getStringExtra(Intent.EXTRA_TEXT); final ArrayList<Media> mediaExtra = getIntent() .getParcelableArrayListExtra(ConversationActivity.MEDIA_EXTRA); intent.putExtra(ConversationActivity.TEXT_EXTRA, textExtra); intent.putExtra(ConversationActivity.MEDIA_EXTRA, mediaExtra); if (resolvedExtra != null) intent.setDataAndType(resolvedExtra, mimeType); return intent; } private String getMimeType(@Nullable Uri uri) { if (uri != null) { final String mimeType = MediaUtil.getMimeType(getApplicationContext(), uri); if (mimeType != null) return mimeType; } return MediaUtil.getCorrectedMimeType(getIntent().getType()); } @Override public void onContactSelected(String number) { Recipient recipient = Recipient.from(this, Address.fromExternal(this, number), true); long existingThread = DatabaseFactory.getThreadDatabase(this).getThreadIdIfExistsFor(recipient); createConversation(existingThread, recipient.getAddress(), ThreadDatabase.DistributionTypes.DEFAULT); } @Override public void onContactDeselected(String number) { } @Override public void onRefresh() { } @SuppressLint("StaticFieldLeak") private class ResolveMediaTask extends AsyncTask<Uri, Void, Uri> { private final Context context; ResolveMediaTask(Context context) { this.context = context; } @Override protected Uri doInBackground(Uri... uris) { try { if (uris.length != 1 || uris[0] == null) { return null; } InputStream inputStream; if ("file".equals(uris[0].getScheme())) { inputStream = openFileUri(uris[0]); } else { inputStream = context.getContentResolver().openInputStream(uris[0]); } if (inputStream == null) { return null; } Cursor cursor = getContentResolver().query(uris[0], new String[] { OpenableColumns.DISPLAY_NAME, OpenableColumns.SIZE }, null, null, null); String fileName = null; Long fileSize = null; try { if (cursor != null && cursor.moveToFirst()) { try { fileName = cursor.getString(cursor.getColumnIndexOrThrow(OpenableColumns.DISPLAY_NAME)); fileSize = cursor.getLong(cursor.getColumnIndexOrThrow(OpenableColumns.SIZE)); } catch (IllegalArgumentException e) { Log.w(TAG, e); } } } finally { if (cursor != null) cursor.close(); } return BlobProvider.getInstance().forData(inputStream, fileSize == null ? 0 : fileSize) .withMimeType(mimeType).withFileName(fileName) .createForMultipleSessionsOnDisk(context, e -> Log.w(TAG, "Failed to write to disk.", e)); } catch (IOException ioe) { Log.w(TAG, ioe); return null; } } @Override protected void onPostExecute(Uri uri) { resolvedExtra = uri; handleResolvedMedia(getIntent(), true); } private InputStream openFileUri(Uri uri) throws IOException { FileInputStream fin = new FileInputStream(uri.getPath()); int owner = FileUtils.getFileDescriptorOwner(fin.getFD()); if (owner == -1 || owner == Process.myUid()) { fin.close(); throw new IOException("File owned by application"); } return fin; } } }