Java tutorial
/* * Copyright the original author or authors. * * 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 de.schildbach.wallet.ui; import java.io.File; import java.io.IOException; import java.util.Calendar; import java.util.Formatter; import java.util.GregorianCalendar; import java.util.List; import java.util.Locale; import java.util.Set; import java.util.TimeZone; import org.bitcoinj.core.Transaction; import org.bitcoinj.core.TransactionOutput; import org.bitcoinj.wallet.Wallet; import com.google.common.base.Joiner; import com.google.common.base.Strings; import de.schildbach.wallet.Configuration; import de.schildbach.wallet.Constants; import de.schildbach.wallet.WalletApplication; import de.schildbach.wallet.util.Bluetooth; import de.schildbach.wallet.util.CrashReporter; import android.annotation.TargetApi; import android.app.ActivityManager; import android.app.AlertDialog; import android.app.Dialog; import android.app.admin.DevicePolicyManager; import android.arch.lifecycle.Observer; import android.arch.lifecycle.ViewModelProviders; import android.bluetooth.BluetoothAdapter; import android.content.Context; import android.content.DialogInterface; import android.content.DialogInterface.OnShowListener; import android.content.pm.PackageInfo; import android.content.res.Resources; import android.os.Build; import android.os.Bundle; import android.support.v4.app.DialogFragment; import android.support.v4.app.FragmentManager; import android.widget.Button; /** * @author Andreas Schildbach */ public class ReportIssueDialogFragment extends DialogFragment { private static final String FRAGMENT_TAG = ReportIssueDialogFragment.class.getName(); private static final String KEY_TITLE = "title"; private static final String KEY_MESSAGE = "message"; private static final String KEY_SUBJECT = "subject"; private static final String KEY_CONTEXTUAL_DATA = "contextual_data"; private static final TimeZone UTC = TimeZone.getTimeZone("UTC"); public static void show(final FragmentManager fm, final int titleResId, final int messageResId, final String subject, final String contextualData) { final DialogFragment newFragment = new ReportIssueDialogFragment(); final Bundle args = new Bundle(); args.putInt(KEY_TITLE, titleResId); args.putInt(KEY_MESSAGE, messageResId); args.putString(KEY_SUBJECT, subject); args.putString(KEY_CONTEXTUAL_DATA, contextualData); newFragment.setArguments(args); newFragment.show(fm, FRAGMENT_TAG); } private AbstractWalletActivity activity; private WalletApplication application; private Button positiveButton; private ReportIssueViewModel viewModel; @Override public void onAttach(final Context context) { super.onAttach(context); this.activity = (AbstractWalletActivity) context; this.application = activity.getWalletApplication(); } @Override public void onCreate(final Bundle savedInstanceState) { super.onCreate(savedInstanceState); viewModel = ViewModelProviders.of(this).get(ReportIssueViewModel.class); } @Override public Dialog onCreateDialog(final Bundle savedInstanceState) { final Bundle args = getArguments(); final int titleResId = args.getInt(KEY_TITLE); final int messageResId = args.getInt(KEY_MESSAGE); final String subject = args.getString(KEY_SUBJECT); final String contextualData = args.getString(KEY_CONTEXTUAL_DATA); final ReportIssueDialogBuilder builder = new ReportIssueDialogBuilder(activity, titleResId, messageResId) { @Override protected String subject() { return subject + ": " + WalletApplication.versionLine(application.packageInfo()); } @Override protected CharSequence collectApplicationInfo() throws IOException { final StringBuilder applicationInfo = new StringBuilder(); appendApplicationInfo(applicationInfo, application); return applicationInfo; } @Override protected CharSequence collectStackTrace() throws IOException { final StringBuilder stackTrace = new StringBuilder(); CrashReporter.appendSavedCrashTrace(stackTrace); return stackTrace.length() > 0 ? stackTrace : null; } @Override protected CharSequence collectDeviceInfo() throws IOException { final StringBuilder deviceInfo = new StringBuilder(); appendDeviceInfo(deviceInfo, activity); return deviceInfo; } @Override protected CharSequence collectContextualData() { return contextualData; } @Override protected CharSequence collectWalletDump() { return viewModel.wallet.getValue().toString(false, true, true, null); } }; final AlertDialog dialog = builder.create(); dialog.setOnShowListener(new OnShowListener() { @Override public void onShow(final DialogInterface d) { positiveButton = dialog.getButton(DialogInterface.BUTTON_POSITIVE); positiveButton.setEnabled(false); viewModel.wallet.observe(ReportIssueDialogFragment.this, new Observer<Wallet>() { @Override public void onChanged(final Wallet wallet) { positiveButton.setEnabled(true); } }); } }); return dialog; } @Override public void onDismiss(final DialogInterface dialog) { CrashReporter.deleteSaveCrashTrace(); super.onDismiss(dialog); } private void appendApplicationInfo(final Appendable report, final WalletApplication application) throws IOException { final PackageInfo pi = application.packageInfo(); final Configuration configuration = application.getConfiguration(); final Calendar calendar = new GregorianCalendar(UTC); report.append("Version: " + pi.versionName + " (" + pi.versionCode + ")\n"); report.append("Package: " + pi.packageName + "\n"); report.append( "Installer: " + application.getPackageManager().getInstallerPackageName(pi.packageName) + "\n"); report.append("Test/Prod: " + (Constants.TEST ? "test" : "prod") + "\n"); report.append("Timezone: " + TimeZone.getDefault().getID() + "\n"); calendar.setTimeInMillis(System.currentTimeMillis()); report.append("Time: " + String.format(Locale.US, "%tF %tT %tZ", calendar, calendar, calendar) + "\n"); calendar.setTimeInMillis(WalletApplication.TIME_CREATE_APPLICATION); report.append( "Time of launch: " + String.format(Locale.US, "%tF %tT %tZ", calendar, calendar, calendar) + "\n"); calendar.setTimeInMillis(pi.lastUpdateTime); report.append("Time of last update: " + String.format(Locale.US, "%tF %tT %tZ", calendar, calendar, calendar) + "\n"); calendar.setTimeInMillis(pi.firstInstallTime); report.append("Time of first install: " + String.format(Locale.US, "%tF %tT %tZ", calendar, calendar, calendar) + "\n"); final long lastBackupTime = configuration.getLastBackupTime(); calendar.setTimeInMillis(lastBackupTime); report.append("Time of backup: " + (lastBackupTime > 0 ? String.format(Locale.US, "%tF %tT %tZ", calendar, calendar, calendar) : "none") + "\n"); report.append("Network: " + Constants.NETWORK_PARAMETERS.getId() + "\n"); final Wallet wallet = viewModel.wallet.getValue(); report.append("Encrypted: " + wallet.isEncrypted() + "\n"); report.append("Keychain size: " + wallet.getKeyChainGroupSize() + "\n"); final Set<Transaction> transactions = wallet.getTransactions(true); int numInputs = 0; int numOutputs = 0; int numSpentOutputs = 0; for (final Transaction tx : transactions) { numInputs += tx.getInputs().size(); final List<TransactionOutput> outputs = tx.getOutputs(); numOutputs += outputs.size(); for (final TransactionOutput txout : outputs) { if (!txout.isAvailableForSpending()) numSpentOutputs++; } } report.append("Transactions: " + transactions.size() + "\n"); report.append("Inputs: " + numInputs + "\n"); report.append("Outputs: " + numOutputs + " (spent: " + numSpentOutputs + ")\n"); report.append("Last block seen: " + wallet.getLastBlockSeenHeight() + " (" + wallet.getLastBlockSeenHash() + ")\n"); report.append("Databases:"); for (final String db : application.databaseList()) report.append(" " + db); report.append("\n"); final File filesDir = application.getFilesDir(); report.append("\nContents of FilesDir " + filesDir + ":\n"); appendDir(report, filesDir, 0); } private static void appendDir(final Appendable report, final File file, final int indent) throws IOException { for (int i = 0; i < indent; i++) report.append(" - "); final Formatter formatter = new Formatter(report); final Calendar calendar = new GregorianCalendar(UTC); calendar.setTimeInMillis(file.lastModified()); formatter.format(Locale.US, "%tF %tT %8d %s\n", calendar, calendar, file.length(), file.getName()); formatter.close(); final File[] files = file.listFiles(); if (files != null) for (final File f : files) appendDir(report, f, indent + 1); } private static void appendDeviceInfo(final Appendable report, final Context context) throws IOException { final Resources res = context.getResources(); final android.content.res.Configuration config = res.getConfiguration(); final ActivityManager activityManager = (ActivityManager) context .getSystemService(Context.ACTIVITY_SERVICE); final DevicePolicyManager devicePolicyManager = (DevicePolicyManager) context .getSystemService(Context.DEVICE_POLICY_SERVICE); report.append("Device Model: " + Build.MODEL + "\n"); report.append("Android Version: " + Build.VERSION.RELEASE + "\n"); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) report.append("Android security patch level: ").append(Build.VERSION.SECURITY_PATCH).append("\n"); report.append("ABIs: ") .append(Joiner.on(", ").skipNulls() .join(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP ? supportedAbisLollipop() : supportedAbisKitKat())) .append("\n"); report.append("Board: " + Build.BOARD + "\n"); report.append("Brand: " + Build.BRAND + "\n"); report.append("Device: " + Build.DEVICE + "\n"); report.append("Display: " + Build.DISPLAY + "\n"); report.append("Finger Print: " + Build.FINGERPRINT + "\n"); report.append("Host: " + Build.HOST + "\n"); report.append("ID: " + Build.ID + "\n"); report.append("Product: " + Build.PRODUCT + "\n"); report.append("Tags: " + Build.TAGS + "\n"); report.append("Time: " + Build.TIME + "\n"); report.append("Type: " + Build.TYPE + "\n"); report.append("User: " + Build.USER + "\n"); report.append("Configuration: " + config + "\n"); report.append("Screen Layout: size " + (config.screenLayout & android.content.res.Configuration.SCREENLAYOUT_SIZE_MASK) + " long " + (config.screenLayout & android.content.res.Configuration.SCREENLAYOUT_LONG_MASK) + "\n"); report.append("Display Metrics: " + res.getDisplayMetrics() + "\n"); report.append( "Memory Class: " + activityManager.getMemoryClass() + "/" + activityManager.getLargeMemoryClass() + (activityManager.isLowRamDevice() ? " (low RAM device)" : "") + "\n"); report.append("Storage Encryption Status: " + devicePolicyManager.getStorageEncryptionStatus() + "\n"); report.append("Bluetooth MAC: " + bluetoothMac() + "\n"); report.append("Runtime: ").append(System.getProperty("java.vm.name")).append(" ") .append(System.getProperty("java.vm.version")).append("\n"); } private static String bluetoothMac() { try { return Bluetooth.getAddress(BluetoothAdapter.getDefaultAdapter()); } catch (final Exception x) { return x.getMessage(); } } @TargetApi(Build.VERSION_CODES.LOLLIPOP) private static String[] supportedAbisLollipop() { return Build.SUPPORTED_ABIS; } @SuppressWarnings("deprecation") private static String[] supportedAbisKitKat() { return new String[] { Strings.emptyToNull(Build.CPU_ABI), Strings.emptyToNull(Build.CPU_ABI2) }; } }