Java tutorial
package org.schabi.newpipe.report; import android.app.Activity; import android.content.Context; import android.content.Intent; import android.graphics.Color; import android.net.Uri; import android.os.Build; import android.os.Bundle; import android.os.Handler; import android.os.Parcel; import android.os.Parcelable; import android.preference.PreferenceManager; import android.support.design.widget.Snackbar; import android.support.v4.app.NavUtils; import android.support.v7.app.ActionBar; import android.support.v7.app.AppCompatActivity; import android.util.Log; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; import org.acra.ReportField; import org.acra.collector.CrashReportData; import org.json.JSONArray; import org.json.JSONObject; import org.schabi.newpipe.ActivityCommunicator; import org.schabi.newpipe.BuildConfig; import org.schabi.newpipe.Downloader; import org.schabi.newpipe.MainActivity; import org.schabi.newpipe.R; import org.schabi.newpipe.extractor.Parser; import org.schabi.newpipe.util.ThemeHelper; import java.io.PrintWriter; import java.io.StringWriter; import java.text.SimpleDateFormat; import java.util.Date; import java.util.List; import java.util.TimeZone; import java.util.Vector; /** * Created by Christian Schabesberger on 24.10.15. * * Copyright (C) Christian Schabesberger 2016 <chris.schabesberger@mailbox.org> * ErrorActivity.java is part of NewPipe. * * NewPipe 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. * < * NewPipe 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 NewPipe. If not, see <http://www.gnu.org/licenses/>. */ public class ErrorActivity extends AppCompatActivity { // LOG TAGS public static final String TAG = ErrorActivity.class.toString(); // BUNDLE TAGS public static final String ERROR_INFO = "error_info"; public static final String ERROR_LIST = "error_list"; // MESSAGE ID public static final int SEARCHED = 0; public static final int REQUESTED_STREAM = 1; public static final int GET_SUGGESTIONS = 2; public static final int SOMETHING_ELSE = 3; public static final int USER_REPORT = 4; public static final int LOAD_IMAGE = 5; public static final int UI_ERROR = 6; public static final int REQUESTED_CHANNEL = 7; // MESSAGE STRING public static final String SEARCHED_STRING = "searched"; public static final String REQUESTED_STREAM_STRING = "requested stream"; public static final String GET_SUGGESTIONS_STRING = "get suggestions"; public static final String SOMETHING_ELSE_STRING = "something"; public static final String USER_REPORT_STRING = "user report"; public static final String LOAD_IMAGE_STRING = "load image"; public static final String UI_ERROR_STRING = "ui error"; public static final String REQUESTED_CHANNEL_STRING = "requested channel"; public static final String ERROR_EMAIL_ADDRESS = "crashreport@newpipe.schabi.org"; public static final String ERROR_EMAIL_SUBJECT = "Exception in NewPipe " + BuildConfig.VERSION_NAME; Thread globIpRangeThread; private String[] errorList; private ErrorInfo errorInfo; private Class returnActivity; private String currentTimeStamp; private String globIpRange; // views private TextView errorView; private EditText userCommentBox; private Button reportButton; private TextView infoView; private TextView errorMessageView; public static void reportUiError(final AppCompatActivity activity, final Throwable el) { reportError(activity, el, activity.getClass(), null, ErrorInfo.make(UI_ERROR, "none", "", R.string.app_ui_crash)); } public static void reportError(final Context context, final List<Throwable> el, final Class returnAcitivty, View rootView, final ErrorInfo errorInfo) { if (rootView != null) { Snackbar.make(rootView, R.string.error_snackbar_message, Snackbar.LENGTH_LONG) .setActionTextColor(Color.YELLOW) .setAction(R.string.error_snackbar_action, new View.OnClickListener() { @Override public void onClick(View v) { ActivityCommunicator ac = ActivityCommunicator.getCommunicator(); ac.returnActivity = returnAcitivty; Intent intent = new Intent(context, ErrorActivity.class); intent.putExtra(ERROR_INFO, errorInfo); intent.putExtra(ERROR_LIST, elToSl(el)); context.startActivity(intent); } }).show(); } else { ActivityCommunicator ac = ActivityCommunicator.getCommunicator(); ac.returnActivity = returnAcitivty; Intent intent = new Intent(context, ErrorActivity.class); intent.putExtra(ERROR_INFO, errorInfo); intent.putExtra(ERROR_LIST, elToSl(el)); context.startActivity(intent); } } public static void reportError(final Context context, final Throwable e, final Class returnAcitivty, View rootView, final ErrorInfo errorInfo) { List<Throwable> el = null; if (e != null) { el = new Vector<>(); el.add(e); } reportError(context, el, returnAcitivty, rootView, errorInfo); } // async call public static void reportError(Handler handler, final Context context, final Throwable e, final Class returnAcitivty, final View rootView, final ErrorInfo errorInfo) { List<Throwable> el = null; if (e != null) { el = new Vector<>(); el.add(e); } reportError(handler, context, el, returnAcitivty, rootView, errorInfo); } // async call public static void reportError(Handler handler, final Context context, final List<Throwable> el, final Class returnAcitivty, final View rootView, final ErrorInfo errorInfo) { handler.post(new Runnable() { @Override public void run() { reportError(context, el, returnAcitivty, rootView, errorInfo); } }); } public static void reportError(final Context context, final CrashReportData report, final ErrorInfo errorInfo) { // get key first (don't ask about this solution) ReportField key = null; for (ReportField k : report.keySet()) { if (k.toString().equals("STACK_TRACE")) { key = k; } } String[] el = new String[] { report.get(key) }; Intent intent = new Intent(context, ErrorActivity.class); intent.putExtra(ERROR_INFO, errorInfo); intent.putExtra(ERROR_LIST, el); intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); context.startActivity(intent); } private static String getStackTrace(final Throwable throwable) { final StringWriter sw = new StringWriter(); final PrintWriter pw = new PrintWriter(sw, true); throwable.printStackTrace(pw); return sw.getBuffer().toString(); } // errorList to StringList private static String[] elToSl(List<Throwable> stackTraces) { String[] out = new String[stackTraces.size()]; for (int i = 0; i < stackTraces.size(); i++) { out[i] = getStackTrace(stackTraces.get(i)); } return out; } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); ThemeHelper.setTheme(this, true); setContentView(R.layout.activity_error); Intent intent = getIntent(); try { ActionBar actionBar = getSupportActionBar(); actionBar.setDisplayHomeAsUpEnabled(true); actionBar.setTitle(R.string.error_report_title); actionBar.setDisplayShowTitleEnabled(true); } catch (Throwable e) { Log.e(TAG, "Error turing exception handling"); e.printStackTrace(); } reportButton = (Button) findViewById(R.id.errorReportButton); userCommentBox = (EditText) findViewById(R.id.errorCommentBox); errorView = (TextView) findViewById(R.id.errorView); infoView = (TextView) findViewById(R.id.errorInfosView); errorMessageView = (TextView) findViewById(R.id.errorMessageView); ActivityCommunicator ac = ActivityCommunicator.getCommunicator(); returnActivity = ac.returnActivity; errorInfo = intent.getParcelableExtra(ERROR_INFO); errorList = intent.getStringArrayExtra(ERROR_LIST); //importand add gurumeditaion addGuruMeditaion(); currentTimeStamp = getCurrentTimeStamp(); reportButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Intent intent = new Intent(Intent.ACTION_SENDTO); intent.setData(Uri.parse("mailto:" + ERROR_EMAIL_ADDRESS)) .putExtra(Intent.EXTRA_SUBJECT, ERROR_EMAIL_SUBJECT) .putExtra(Intent.EXTRA_TEXT, buildJson()); startActivity(Intent.createChooser(intent, "Send Email")); } }); reportButton.setEnabled(false); globIpRangeThread = new Thread(new IpRagneRequester()); globIpRangeThread.start(); // normal bugreport buildInfo(errorInfo); if (errorInfo.message != 0) { errorMessageView.setText(errorInfo.message); } else { errorMessageView.setVisibility(View.GONE); findViewById(R.id.messageWhatHappenedView).setVisibility(View.GONE); } errorView.setText(formErrorText(errorList)); //print stack trace once again for debugging: for (String e : errorList) { Log.e(TAG, e); } } @Override public boolean onCreateOptionsMenu(Menu menu) { MenuInflater inflater = getMenuInflater(); inflater.inflate(R.menu.error_menu, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { int id = item.getItemId(); switch (id) { case android.R.id.home: goToReturnActivity(); break; case R.id.menu_item_share_error: { Intent intent = new Intent(); intent.setAction(Intent.ACTION_SEND); intent.putExtra(Intent.EXTRA_TEXT, buildJson()); intent.setType("text/plain"); startActivity(Intent.createChooser(intent, getString(R.string.share_dialog_title))); } break; } return false; } private String formErrorText(String[] el) { String text = ""; if (el != null) { for (String e : el) { text += "-------------------------------------\n" + e; } } text += "-------------------------------------"; return text; } private void goToReturnActivity() { if (returnActivity == null) { super.onBackPressed(); } else { Intent intent; if (returnActivity != null && returnActivity.isAssignableFrom(Activity.class)) { intent = new Intent(this, returnActivity); } else { intent = new Intent(this, MainActivity.class); } intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); NavUtils.navigateUpTo(this, intent); } } private void buildInfo(ErrorInfo info) { TextView infoLabelView = (TextView) findViewById(R.id.errorInfoLabelsView); TextView infoView = (TextView) findViewById(R.id.errorInfosView); String text = ""; infoLabelView.setText(getString(R.string.info_labels).replace("\\n", "\n")); text += getUserActionString(info.userAction) + "\n" + info.request + "\n" + getContentLangString() + "\n" + info.serviceName + "\n" + currentTimeStamp + "\n" + getPackageName() + "\n" + BuildConfig.VERSION_NAME + "\n" + getOsString(); infoView.setText(text); } private String buildJson() { JSONObject errorObject = new JSONObject(); try { errorObject.put("user_action", getUserActionString(errorInfo.userAction)) .put("request", errorInfo.request).put("content_language", getContentLangString()) .put("service", errorInfo.serviceName).put("package", getPackageName()) .put("version", BuildConfig.VERSION_NAME).put("os", getOsString()).put("time", currentTimeStamp) .put("ip_range", globIpRange); JSONArray exceptionArray = new JSONArray(); if (errorList != null) { for (String e : errorList) { exceptionArray.put(e); } } errorObject.put("exceptions", exceptionArray); errorObject.put("user_comment", userCommentBox.getText().toString()); return errorObject.toString(3); } catch (Throwable e) { Log.e(TAG, "Error while erroring: Could not build json"); e.printStackTrace(); } return ""; } private String getUserActionString(int userAction) { switch (userAction) { case REQUESTED_STREAM: return REQUESTED_STREAM_STRING; case SEARCHED: return SEARCHED_STRING; case GET_SUGGESTIONS: return GET_SUGGESTIONS_STRING; case SOMETHING_ELSE: return SOMETHING_ELSE_STRING; case USER_REPORT: return USER_REPORT_STRING; case LOAD_IMAGE: return LOAD_IMAGE_STRING; case UI_ERROR: return UI_ERROR_STRING; case REQUESTED_CHANNEL: return REQUESTED_CHANNEL_STRING; default: return "Your description is in another castle."; } } private String getContentLangString() { return PreferenceManager.getDefaultSharedPreferences(this) .getString(this.getString(R.string.search_language_key), "none"); } private String getOsString() { String osBase = Build.VERSION.SDK_INT >= 23 ? Build.VERSION.BASE_OS : "Android"; return System.getProperty("os.name") + " " + (osBase.isEmpty() ? "Android" : osBase) + " " + Build.VERSION.RELEASE + " - " + Integer.toString(Build.VERSION.SDK_INT); } private void addGuruMeditaion() { //just an easter egg TextView sorryView = (TextView) findViewById(R.id.errorSorryView); String text = sorryView.getText().toString(); text += "\n" + getString(R.string.guru_meditation); sorryView.setText(text); } @Override public void onBackPressed() { //super.onBackPressed(); goToReturnActivity(); } public String getCurrentTimeStamp() { SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm"); df.setTimeZone(TimeZone.getTimeZone("GMT")); return df.format(new Date()); } public static class ErrorInfo implements Parcelable { public static final Parcelable.Creator<ErrorInfo> CREATOR = new Parcelable.Creator<ErrorInfo>() { @Override public ErrorInfo createFromParcel(Parcel source) { return new ErrorInfo(source); } @Override public ErrorInfo[] newArray(int size) { return new ErrorInfo[size]; } }; public int userAction; public String request; public String serviceName; public int message; public ErrorInfo() { } protected ErrorInfo(Parcel in) { this.userAction = in.readInt(); this.request = in.readString(); this.serviceName = in.readString(); this.message = in.readInt(); } public static ErrorInfo make(int userAction, String serviceName, String request, int message) { ErrorInfo info = new ErrorInfo(); info.userAction = userAction; info.serviceName = serviceName; info.request = request; info.message = message; return info; } @Override public int describeContents() { return 0; } @Override public void writeToParcel(Parcel dest, int flags) { dest.writeInt(this.userAction); dest.writeString(this.request); dest.writeString(this.serviceName); dest.writeInt(this.message); } } private class IpRagneRequester implements Runnable { Handler h = new Handler(); public void run() { String ipRange = "none"; try { Downloader dl = Downloader.getInstance(); String ip = dl.download("https://ipv4.icanhazip.com"); ipRange = Parser.matchGroup1("([0-9]*\\.[0-9]*\\.)[0-9]*\\.[0-9]*", ip) + "0.0"; } catch (Throwable e) { Log.d(TAG, "Error while error: could not get iprange"); e.printStackTrace(); } finally { h.post(new IpRageReturnRunnable(ipRange)); } } } private class IpRageReturnRunnable implements Runnable { String ipRange; public IpRageReturnRunnable(String ipRange) { this.ipRange = ipRange; } public void run() { globIpRange = ipRange; if (infoView != null) { String text = infoView.getText().toString(); text += "\n" + globIpRange; infoView.setText(text); reportButton.setEnabled(true); } } } }