Java tutorial
/* * Copyright (C) 2013 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 com.android.shell; import static com.android.shell.BugreportPrefs.STATE_SHOW; import static com.android.shell.BugreportPrefs.getWarningState; import android.accounts.Account; import android.accounts.AccountManager; import android.app.Notification; import android.app.NotificationManager; import android.app.PendingIntent; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.net.Uri; import android.os.AsyncTask; import android.os.FileUtils; import android.os.SystemProperties; import android.support.v4.content.FileProvider; import android.text.format.DateUtils; import android.util.Patterns; import com.google.android.collect.Lists; import java.io.File; import java.util.ArrayList; /** * Receiver that handles finished bugreports, usually by attaching them to an * {@link Intent#ACTION_SEND}. */ public class BugreportReceiver extends BroadcastReceiver { private static final String TAG = "Shell"; private static final String AUTHORITY = "com.android.shell"; private static final String EXTRA_BUGREPORT = "android.intent.extra.BUGREPORT"; private static final String EXTRA_SCREENSHOT = "android.intent.extra.SCREENSHOT"; /** * Always keep the newest 8 bugreport files; 4 reports and 4 screenshots are * roughly 17MB of disk space. */ private static final int MIN_KEEP_COUNT = 8; /** * Always keep bugreports taken in the last week. */ private static final long MIN_KEEP_AGE = DateUtils.WEEK_IN_MILLIS; @Override public void onReceive(Context context, Intent intent) { final File bugreportFile = getFileExtra(intent, EXTRA_BUGREPORT); final File screenshotFile = getFileExtra(intent, EXTRA_SCREENSHOT); // Files are kept on private storage, so turn into Uris that we can // grant temporary permissions for. final Uri bugreportUri = FileProvider.getUriForFile(context, AUTHORITY, bugreportFile); final Uri screenshotUri = FileProvider.getUriForFile(context, AUTHORITY, screenshotFile); Intent sendIntent = buildSendIntent(context, bugreportUri, screenshotUri); Intent notifIntent; // Send through warning dialog by default if (getWarningState(context, STATE_SHOW) == STATE_SHOW) { notifIntent = buildWarningIntent(context, sendIntent); } else { notifIntent = sendIntent; } notifIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); final Notification.Builder builder = new Notification.Builder(context); builder.setSmallIcon(com.android.internal.R.drawable.stat_sys_adb); builder.setContentTitle(context.getString(R.string.bugreport_finished_title)); builder.setTicker(context.getString(R.string.bugreport_finished_title)); builder.setContentText(context.getString(R.string.bugreport_finished_text)); builder.setContentIntent( PendingIntent.getActivity(context, 0, notifIntent, PendingIntent.FLAG_CANCEL_CURRENT)); builder.setAutoCancel(true); NotificationManager.from(context).notify(TAG, 0, builder.build()); // Clean up older bugreports in background final PendingResult result = goAsync(); new AsyncTask<Void, Void, Void>() { @Override protected Void doInBackground(Void... params) { FileUtils.deleteOlderFiles(bugreportFile.getParentFile(), MIN_KEEP_COUNT, MIN_KEEP_AGE); result.finish(); return null; } }.execute(); } private static Intent buildWarningIntent(Context context, Intent sendIntent) { final Intent intent = new Intent(context, BugreportWarningActivity.class); intent.putExtra(Intent.EXTRA_INTENT, sendIntent); return intent; } /** * Build {@link Intent} that can be used to share the given bugreport. */ private static Intent buildSendIntent(Context context, Uri bugreportUri, Uri screenshotUri) { final Intent intent = new Intent(Intent.ACTION_SEND_MULTIPLE); intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION); intent.addCategory(Intent.CATEGORY_DEFAULT); intent.setType("application/vnd.android.bugreport"); intent.putExtra(Intent.EXTRA_SUBJECT, bugreportUri.getLastPathSegment()); intent.putExtra(Intent.EXTRA_TEXT, SystemProperties.get("ro.build.description")); final ArrayList<Uri> attachments = Lists.newArrayList(bugreportUri, screenshotUri); intent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, attachments); final Account sendToAccount = findSendToAccount(context); if (sendToAccount != null) { intent.putExtra(Intent.EXTRA_EMAIL, new String[] { sendToAccount.name }); } return intent; } /** * Find the best matching {@link Account} based on build properties. */ private static Account findSendToAccount(Context context) { final AccountManager am = (AccountManager) context.getSystemService(Context.ACCOUNT_SERVICE); String preferredDomain = SystemProperties.get("sendbug.preferred.domain"); if (!preferredDomain.startsWith("@")) { preferredDomain = "@" + preferredDomain; } final Account[] accounts = am.getAccounts(); Account foundAccount = null; for (Account account : accounts) { if (Patterns.EMAIL_ADDRESS.matcher(account.name).matches()) { if (!preferredDomain.isEmpty()) { // if we have a preferred domain and it matches, return; otherwise keep // looking if (account.name.endsWith(preferredDomain)) { return account; } else { foundAccount = account; } // if we don't have a preferred domain, just return since it looks like // an email address } else { return account; } } } return foundAccount; } private static File getFileExtra(Intent intent, String key) { final String path = intent.getStringExtra(key); if (path != null) { return new File(path); } else { return null; } } }