X-Git-Url: https://gitweb.stoutner.com/?p=PrivacyBrowserAndroid.git;a=blobdiff_plain;f=app%2Fsrc%2Fmain%2Fjava%2Fcom%2Fstoutner%2Fprivacybrowser%2Factivities%2FViewSourceActivity.java;h=229bcf28ade37a7c7e51beb1ae1d1e7774003a7c;hp=db9bf7974f6a52aa58d0256c2d407cc8d0aa6042;hb=81179d84ced6b43360d42a4b44eb8fb329532ff4;hpb=6a85cc5ca039054a24c4601de785e0bc1a234722 diff --git a/app/src/main/java/com/stoutner/privacybrowser/activities/ViewSourceActivity.java b/app/src/main/java/com/stoutner/privacybrowser/activities/ViewSourceActivity.java index db9bf797..229bcf28 100644 --- a/app/src/main/java/com/stoutner/privacybrowser/activities/ViewSourceActivity.java +++ b/app/src/main/java/com/stoutner/privacybrowser/activities/ViewSourceActivity.java @@ -1,5 +1,5 @@ /* - * Copyright © 2017-2018 Soren Stoutner . + * Copyright © 2017-2019 Soren Stoutner . * * This file is part of Privacy Browser . * @@ -20,47 +20,33 @@ package com.stoutner.privacybrowser.activities; import android.app.Activity; -import android.app.DialogFragment; import android.content.Context; +import android.content.Intent; import android.content.SharedPreferences; -import android.graphics.Typeface; -import android.os.AsyncTask; -import android.os.Build; import android.os.Bundle; -import android.os.LocaleList; import android.preference.PreferenceManager; -import android.support.v4.app.NavUtils; -import android.support.v4.widget.SwipeRefreshLayout; -import android.support.v7.app.ActionBar; -import android.support.v7.app.AppCompatActivity; -import android.support.v7.widget.Toolbar; -import android.text.SpannableStringBuilder; import android.text.Spanned; import android.text.style.ForegroundColorSpan; -import android.text.style.StyleSpan; import android.view.KeyEvent; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.WindowManager; import android.view.inputmethod.InputMethodManager; -import android.webkit.CookieManager; import android.widget.EditText; -import android.widget.ProgressBar; -import android.widget.TextView; + +import androidx.annotation.NonNull; +import androidx.appcompat.app.ActionBar; +import androidx.appcompat.app.AppCompatActivity; +import androidx.appcompat.widget.Toolbar; // The AndroidX toolbar must be used until the minimum API is >= 21. +import androidx.core.app.NavUtils; +import androidx.fragment.app.DialogFragment; +import androidx.swiperefreshlayout.widget.SwipeRefreshLayout; import com.stoutner.privacybrowser.R; +import com.stoutner.privacybrowser.asynctasks.GetSource; import com.stoutner.privacybrowser.dialogs.AboutViewSourceDialog; -import java.io.BufferedInputStream; -import java.io.ByteArrayOutputStream; -import java.io.IOException; -import java.io.InputStream; -import java.lang.ref.WeakReference; -import java.net.HttpURLConnection; -import java.net.URL; -import java.util.Locale; - public class ViewSourceActivity extends AppCompatActivity { // `activity` is used in `onCreate()` and `goBack()`. private Activity activity; @@ -72,13 +58,20 @@ public class ViewSourceActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { + // Get a handle for the shared preferences. + SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext()); + + // Get the screenshot and theme preferences. + boolean allowScreenshots = sharedPreferences.getBoolean("allow_screenshots", false); + boolean darkTheme = sharedPreferences.getBoolean("dark_theme", false); + // Disable screenshots if not allowed. - if (!MainWebViewActivity.allowScreenshots) { + if (!allowScreenshots) { getWindow().addFlags(WindowManager.LayoutParams.FLAG_SECURE); } // Set the theme. - if (MainWebViewActivity.darkTheme) { + if (darkTheme) { setTheme(R.style.PrivacyBrowserDark); } else { setTheme(R.style.PrivacyBrowserLight); @@ -87,34 +80,38 @@ public class ViewSourceActivity extends AppCompatActivity { // Run the default commands. super.onCreate(savedInstanceState); + // Get the launching intent + Intent intent = getIntent(); + + // Get the information from the intent. + String userAgent = intent.getStringExtra("user_agent"); + String currentUrl = intent.getStringExtra("current_url"); + // Store a handle for the current activity. activity = this; // Set the content view. setContentView(R.layout.view_source_coordinatorlayout); - // `SupportActionBar` from `android.support.v7.app.ActionBar` must be used until the minimum API is >= 21. - Toolbar viewSourceAppBar = findViewById(R.id.view_source_toolbar); - setSupportActionBar(viewSourceAppBar); + // The AndroidX toolbar must be used until the minimum API is >= 21. + Toolbar toolbar = findViewById(R.id.view_source_toolbar); + setSupportActionBar(toolbar); - // Setup the app bar. - final ActionBar appBar = getSupportActionBar(); + // Get a handle for the action bar. + final ActionBar actionBar = getSupportActionBar(); - // Remove the incorrect warning in Android Studio that appBar might be null. - assert appBar != null; + // Remove the incorrect lint warning that the action bar might be null. + assert actionBar != null; - // Add the custom layout to the app bar. - appBar.setCustomView(R.layout.view_source_app_bar); - appBar.setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM); + // Add the custom layout to the action bar. + actionBar.setCustomView(R.layout.view_source_app_bar); + actionBar.setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM); // Get a handle for the url text box. EditText urlEditText = findViewById(R.id.url_edittext); - // Get the formatted URL string from the main activity. - String formattedUrlString = MainWebViewActivity.formattedUrlString; - // Populate the URL text box. - urlEditText.setText(formattedUrlString); + urlEditText.setText(currentUrl); // Initialize the foreground color spans for highlighting the URLs. We have to use the deprecated `getColor()` until API >= 23. redColorSpan = new ForegroundColorSpan(getResources().getColor(R.color.red_a700)); @@ -164,7 +161,7 @@ public class ViewSourceActivity extends AppCompatActivity { // Get new source data for the current URL if it beings with `http`. if (url.startsWith("http")) { - new GetSource(this).execute(url); + new GetSource(this, userAgent).execute(url); } // Consume the key press. @@ -175,15 +172,17 @@ public class ViewSourceActivity extends AppCompatActivity { } }); - // Implement swipe to refresh. + // Get a handle for the swipe refresh layout. SwipeRefreshLayout swipeRefreshLayout = findViewById(R.id.view_source_swiperefreshlayout); + + // Implement swipe to refresh. swipeRefreshLayout.setOnRefreshListener(() -> { // Get the URL. String url = urlEditText.getText().toString(); - // Get new source data for the URL if it begins with `http`/ + // Get new source data for the URL if it begins with `http`. if (url.startsWith("http")) { - new GetSource(this).execute(url); + new GetSource(this, userAgent).execute(url); } else { // Stop the refresh animation. swipeRefreshLayout.setRefreshing(false); @@ -191,7 +190,7 @@ public class ViewSourceActivity extends AppCompatActivity { }); // Set the swipe to refresh color according to the theme. - if (MainWebViewActivity.darkTheme) { + if (darkTheme) { swipeRefreshLayout.setColorSchemeResources(R.color.blue_600); swipeRefreshLayout.setProgressBackgroundColorSchemeResource(R.color.gray_800); } else { @@ -199,14 +198,14 @@ public class ViewSourceActivity extends AppCompatActivity { } // Get the source using an AsyncTask if the URL begins with `http`. - if (formattedUrlString.startsWith("http")) { - new GetSource(this).execute(formattedUrlString); + if ((currentUrl != null) && currentUrl.startsWith("http")) { + new GetSource(this, userAgent).execute(currentUrl); } } @Override public boolean onCreateOptionsMenu(Menu menu) { - // Inflate the menu; this adds items to the action bar if it is present. + // Inflate the menu. This adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.view_source_options_menu, menu); // Display the menu. @@ -214,12 +213,12 @@ public class ViewSourceActivity extends AppCompatActivity { } @Override - public boolean onOptionsItemSelected(MenuItem menuItem) { + public boolean onOptionsItemSelected(@NonNull MenuItem menuItem) { // Get a handle for the about alert dialog. DialogFragment aboutDialogFragment = new AboutViewSourceDialog(); // Show the about alert dialog. - aboutDialogFragment.show(getFragmentManager(), getString(R.string.about)); + aboutDialogFragment.show(getSupportFragmentManager(), getString(R.string.about)); // Consume the event. return true; @@ -290,407 +289,4 @@ public class ViewSourceActivity extends AppCompatActivity { } } } - - // `String` declares the parameters. `Void` does not declare progress units. `String[]` contains the results. - private static class GetSource extends AsyncTask { - // Create a weak reference to the calling activity. - private WeakReference activityWeakReference; - - // Populate the weak reference to the calling activity. - GetSource(Activity activity) { - activityWeakReference = new WeakReference<>(activity); - } - - // `onPreExecute()` operates on the UI thread. - @Override - protected void onPreExecute() { - // Get a handle for the activity. - Activity viewSourceActivity = activityWeakReference.get(); - - // Abort if the activity is gone. - if ((viewSourceActivity == null) || (viewSourceActivity.isFinishing())) { - return; - } - - // Get a handle for the progress bar. - ProgressBar progressBar = viewSourceActivity.findViewById(R.id.progress_bar); - - // Make the progress bar visible. - progressBar.setVisibility(View.VISIBLE); - - // Set the progress bar to be indeterminate. - progressBar.setIndeterminate(true); - } - - @Override - protected SpannableStringBuilder[] doInBackground(String... formattedUrlString) { - // Initialize the response body String. - SpannableStringBuilder requestHeadersBuilder = new SpannableStringBuilder(); - SpannableStringBuilder responseMessageBuilder = new SpannableStringBuilder(); - SpannableStringBuilder responseHeadersBuilder = new SpannableStringBuilder(); - SpannableStringBuilder responseBodyBuilder = new SpannableStringBuilder(); - - // Get a handle for the activity. - Activity activity = activityWeakReference.get(); - - // Abort if the activity is gone. - if ((activity == null) || (activity.isFinishing())) { - return new SpannableStringBuilder[] {requestHeadersBuilder, responseMessageBuilder, responseHeadersBuilder, responseBodyBuilder}; - } - - // Because everything relating to requesting data from a webserver can throw errors, the entire section must catch `IOExceptions`. - try { - // Get the current URL from the main activity. - URL url = new URL(formattedUrlString[0]); - - // Open a connection to the URL. No data is actually sent at this point. - HttpURLConnection httpUrlConnection = (HttpURLConnection) url.openConnection(); - - // Instantiate the variables necessary to build the request headers. - requestHeadersBuilder = new SpannableStringBuilder(); - int oldRequestHeadersBuilderLength; - int newRequestHeadersBuilderLength; - - - // Set the `Host` header property. - httpUrlConnection.setRequestProperty("Host", url.getHost()); - - // Add the `Host` header to the string builder and format the text. - if (Build.VERSION.SDK_INT >= 21) { // Newer versions of Android are so smart. - requestHeadersBuilder.append("Host", new StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); - } else { // Older versions not so much. - oldRequestHeadersBuilderLength = requestHeadersBuilder.length(); - requestHeadersBuilder.append("Host"); - newRequestHeadersBuilderLength = requestHeadersBuilder.length(); - requestHeadersBuilder.setSpan(new StyleSpan(Typeface.BOLD), oldRequestHeadersBuilderLength + 1, newRequestHeadersBuilderLength, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); - } - requestHeadersBuilder.append(": "); - requestHeadersBuilder.append(url.getHost()); - - - // Set the `Connection` header property. - httpUrlConnection.setRequestProperty("Connection", "keep-alive"); - - // Add the `Connection` header to the string builder and format the text. - requestHeadersBuilder.append(System.getProperty("line.separator")); - if (Build.VERSION.SDK_INT >= 21) { // Newer versions of Android are so smart. - requestHeadersBuilder.append("Connection", new StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); - } else { // Older versions not so much. - oldRequestHeadersBuilderLength = requestHeadersBuilder.length(); - requestHeadersBuilder.append("Connection"); - newRequestHeadersBuilderLength = requestHeadersBuilder.length(); - requestHeadersBuilder.setSpan(new StyleSpan(Typeface.BOLD), oldRequestHeadersBuilderLength + 1, newRequestHeadersBuilderLength, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); - } - requestHeadersBuilder.append(": keep-alive"); - - - // Get the current `User-Agent` string. - String userAgentString = MainWebViewActivity.appliedUserAgentString; - - // Set the `User-Agent` header property. - httpUrlConnection.setRequestProperty("User-Agent", userAgentString); - - // Add the `User-Agent` header to the string builder and format the text. - requestHeadersBuilder.append(System.getProperty("line.separator")); - if (Build.VERSION.SDK_INT >= 21) { // Newer versions of Android are so smart. - requestHeadersBuilder.append("User-Agent", new StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); - } else { // Older versions not so much. - oldRequestHeadersBuilderLength = requestHeadersBuilder.length(); - requestHeadersBuilder.append("User-Agent"); - newRequestHeadersBuilderLength = requestHeadersBuilder.length(); - requestHeadersBuilder.setSpan(new StyleSpan(Typeface.BOLD), oldRequestHeadersBuilderLength + 1, newRequestHeadersBuilderLength, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); - } - requestHeadersBuilder.append(": "); - requestHeadersBuilder.append(userAgentString); - - - // Set the `Upgrade-Insecure-Requests` header property. - httpUrlConnection.setRequestProperty("Upgrade-Insecure-Requests", "1"); - - // Add the `Upgrade-Insecure-Requests` header to the string builder and format the text. - requestHeadersBuilder.append(System.getProperty("line.separator")); - if (Build.VERSION.SDK_INT >= 21) { // Newer versions of Android are so smart. - requestHeadersBuilder.append("Upgrade-Insecure-Requests", new StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); - } else { // Older versions not so much. - oldRequestHeadersBuilderLength = requestHeadersBuilder.length(); - requestHeadersBuilder.append("Upgrade-Insecure_Requests"); - newRequestHeadersBuilderLength = requestHeadersBuilder.length(); - requestHeadersBuilder.setSpan(new StyleSpan(Typeface.BOLD), oldRequestHeadersBuilderLength + 1, newRequestHeadersBuilderLength, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); - } - requestHeadersBuilder.append(": 1"); - - - // Set the `x-requested-with` header property. - httpUrlConnection.setRequestProperty("x-requested-with", ""); - - // Add the `x-requested-with` header to the string builder and format the text. - requestHeadersBuilder.append(System.getProperty("line.separator")); - if (Build.VERSION.SDK_INT >= 21) { // Newer versions of Android are so smart. - requestHeadersBuilder.append("x-requested-with", new StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); - } else { // Older versions not so much. - oldRequestHeadersBuilderLength = requestHeadersBuilder.length(); - requestHeadersBuilder.append("x-requested-with"); - newRequestHeadersBuilderLength = requestHeadersBuilder.length(); - requestHeadersBuilder.setSpan(new StyleSpan(Typeface.BOLD), oldRequestHeadersBuilderLength + 1, newRequestHeadersBuilderLength, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); - } - requestHeadersBuilder.append(": "); - - - // Get a handle for the shared preferences. - SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(activity.getApplicationContext()); - - // Only populate `Do Not Track` if it is enabled. - if (sharedPreferences.getBoolean("do_not_track", false)) { - // Set the `dnt` header property. - httpUrlConnection.setRequestProperty("dnt", "1"); - - // Add the `dnt` header to the string builder and format the text. - requestHeadersBuilder.append(System.getProperty("line.separator")); - if (Build.VERSION.SDK_INT >= 21) { // Newer versions of Android are so smart. - requestHeadersBuilder.append("dnt", new StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); - } else { // Older versions not so much. - oldRequestHeadersBuilderLength = requestHeadersBuilder.length(); - requestHeadersBuilder.append("dnt"); - newRequestHeadersBuilderLength = requestHeadersBuilder.length(); - requestHeadersBuilder.setSpan(new StyleSpan(Typeface.BOLD), oldRequestHeadersBuilderLength + 1, newRequestHeadersBuilderLength, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); - } - requestHeadersBuilder.append(": 1"); - } - - - // Set the `Accept` header property. - httpUrlConnection.setRequestProperty("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8"); - - // Add the `Accept` header to the string builder and format the text. - requestHeadersBuilder.append(System.getProperty("line.separator")); - if (Build.VERSION.SDK_INT >= 21) { // Newer versions of Android are so smart. - requestHeadersBuilder.append("Accept", new StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); - } else { // Older versions not so much. - oldRequestHeadersBuilderLength = requestHeadersBuilder.length(); - requestHeadersBuilder.append("Accept"); - newRequestHeadersBuilderLength = requestHeadersBuilder.length(); - requestHeadersBuilder.setSpan(new StyleSpan(Typeface.BOLD), oldRequestHeadersBuilderLength + 1, newRequestHeadersBuilderLength, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); - } - requestHeadersBuilder.append(": "); - requestHeadersBuilder.append("text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8"); - - - // Instantiate a locale string. - String localeString; - - // Populate the locale string. - if (Build.VERSION.SDK_INT >= 24) { // SDK >= 24 has a list of locales. - // Get the list of locales. - LocaleList localeList = activity.getResources().getConfiguration().getLocales(); - - // Initialize a string builder to extract the locales from the list. - StringBuilder localesStringBuilder = new StringBuilder(); - - // Initialize a `q` value, which is used by `WebView` to indicate the order of importance of the languages. - int q = 10; - - // Populate the string builder with the contents of the locales list. - for (int i = 0; i < localeList.size(); i++) { - // Append a comma if there is already an item in the string builder. - if (i > 0) { - localesStringBuilder.append(","); - } - - // Get the indicated locale from the list. - localesStringBuilder.append(localeList.get(i)); - - // If not the first locale, append `;q=0.i`, which drops by .1 for each removal from the main locale. - if (q < 10) { - localesStringBuilder.append(";q=0."); - localesStringBuilder.append(q); - } - - // Decrement `q`. - q--; - } - - // Store the populated string builder in the locale string. - localeString = localesStringBuilder.toString(); - } else { // SDK < 24 only has a primary locale. - // Store the locale in the locale string. - localeString = Locale.getDefault().toString(); - } - - // Set the `Accept-Language` header property. - httpUrlConnection.setRequestProperty("Accept-Language", localeString); - - // Add the `Accept-Language` header to the string builder and format the text. - requestHeadersBuilder.append(System.getProperty("line.separator")); - if (Build.VERSION.SDK_INT >= 21) { // Newer versions of Android are so smart. - requestHeadersBuilder.append("Accept-Language", new StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); - } else { // Older versions not so much. - oldRequestHeadersBuilderLength = requestHeadersBuilder.length(); - requestHeadersBuilder.append("Accept-Language"); - newRequestHeadersBuilderLength = requestHeadersBuilder.length(); - requestHeadersBuilder.setSpan(new StyleSpan(Typeface.BOLD), oldRequestHeadersBuilderLength + 1, newRequestHeadersBuilderLength, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); - } - requestHeadersBuilder.append(": "); - requestHeadersBuilder.append(localeString); - - - // Get the cookies for the current domain. - String cookiesString = CookieManager.getInstance().getCookie(url.toString()); - - // Only process the cookies if they are not null. - if (cookiesString != null) { - // Set the `Cookie` header property. - httpUrlConnection.setRequestProperty("Cookie", cookiesString); - - // Add the `Cookie` header to the string builder and format the text. - requestHeadersBuilder.append(System.getProperty("line.separator")); - if (Build.VERSION.SDK_INT >= 21) { // Newer versions of Android are so smart. - requestHeadersBuilder.append("Cookie", new StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); - } else { // Older versions not so much. - oldRequestHeadersBuilderLength = requestHeadersBuilder.length(); - requestHeadersBuilder.append("Cookie"); - newRequestHeadersBuilderLength = requestHeadersBuilder.length(); - requestHeadersBuilder.setSpan(new StyleSpan(Typeface.BOLD), oldRequestHeadersBuilderLength + 1, newRequestHeadersBuilderLength, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); - } - requestHeadersBuilder.append(": "); - requestHeadersBuilder.append(cookiesString); - } - - - // `HttpUrlConnection` sets `Accept-Encoding` to be `gzip` by default. If the property is manually set, than `HttpUrlConnection` does not process the decoding. - // Add the `Accept-Encoding` header to the string builder and format the text. - requestHeadersBuilder.append(System.getProperty("line.separator")); - if (Build.VERSION.SDK_INT >= 21) { // Newer versions of Android are so smart. - requestHeadersBuilder.append("Accept-Encoding", new StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); - } else { // Older versions not so much. - oldRequestHeadersBuilderLength = requestHeadersBuilder.length(); - requestHeadersBuilder.append("Accept-Encoding"); - newRequestHeadersBuilderLength = requestHeadersBuilder.length(); - requestHeadersBuilder.setSpan(new StyleSpan(Typeface.BOLD), oldRequestHeadersBuilderLength + 1, newRequestHeadersBuilderLength, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); - } - requestHeadersBuilder.append(": gzip"); - - - // The actual network request is in a `try` bracket so that `disconnect()` is run in the `finally` section even if an error is encountered in the main block. - try { - // Initialize the string builders. - responseMessageBuilder = new SpannableStringBuilder(); - responseHeadersBuilder = new SpannableStringBuilder(); - - // Get the response code, which causes the connection to the server to be made. - int responseCode = httpUrlConnection.getResponseCode(); - - // Populate the response message string builder. - if (Build.VERSION.SDK_INT >= 21) { // Newer versions of Android are so smart. - responseMessageBuilder.append(String.valueOf(responseCode), new StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); - } else { // Older versions not so much. - responseMessageBuilder.append(String.valueOf(responseCode)); - int newLength = responseMessageBuilder.length(); - responseMessageBuilder.setSpan(new StyleSpan(Typeface.BOLD), 0, newLength, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); - } - responseMessageBuilder.append(": "); - responseMessageBuilder.append(httpUrlConnection.getResponseMessage()); - - // Initialize the iteration variable. - int i = 0; - - // Iterate through the received header fields. - while (httpUrlConnection.getHeaderField(i) != null) { - // Add a new line if there is already information in the string builder. - if (i > 0) { - responseHeadersBuilder.append(System.getProperty("line.separator")); - } - - // Add the header to the string builder and format the text. - if (Build.VERSION.SDK_INT >= 21) { // Newer versions of Android are so smart. - responseHeadersBuilder.append(httpUrlConnection.getHeaderFieldKey(i), new StyleSpan(Typeface.BOLD), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); - } else { // Older versions not so much. - int oldLength = responseHeadersBuilder.length(); - responseHeadersBuilder.append(httpUrlConnection.getHeaderFieldKey(i)); - int newLength = responseHeadersBuilder.length(); - responseHeadersBuilder.setSpan(new StyleSpan(Typeface.BOLD), oldLength + 1, newLength, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); - } - responseHeadersBuilder.append(": "); - responseHeadersBuilder.append(httpUrlConnection.getHeaderField(i)); - - // Increment the iteration variable. - i++; - } - - // Instantiate an input stream for the response body. - InputStream inputStream; - - // Get the correct input stream based on the response code. - if (responseCode == 404) { // Get the error stream. - inputStream = new BufferedInputStream(httpUrlConnection.getErrorStream()); - } else { // Get the response body stream. - inputStream = new BufferedInputStream(httpUrlConnection.getInputStream()); - } - - // Initialize the byte array output stream and the conversion buffer byte array. - ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(); - byte[] conversionBufferByteArray = new byte[1024]; - - // Instantiate the variable to track the buffer length. - int bufferLength; - - try { - // Attempt to read data from the input stream and store it in the conversion buffer byte array. Also store the amount of data transferred in the buffer length variable. - while ((bufferLength = inputStream.read(conversionBufferByteArray)) > 0) { // Proceed while the amount of data stored in the buffer is > 0. - // Write the contents of the conversion buffer to the byte array output stream. - byteArrayOutputStream.write(conversionBufferByteArray, 0, bufferLength); - } - } catch (IOException e) { - e.printStackTrace(); - } - - // Close the input stream. - inputStream.close(); - - // Populate the response body string with the contents of the byte array output stream. - responseBodyBuilder.append(byteArrayOutputStream.toString()); - } finally { - // Disconnect `httpUrlConnection`. - httpUrlConnection.disconnect(); - } - } catch (IOException e) { - e.printStackTrace(); - } - - // Return the response body string as the result. - return new SpannableStringBuilder[] {requestHeadersBuilder, responseMessageBuilder, responseHeadersBuilder, responseBodyBuilder}; - } - - // `onPostExecute()` operates on the UI thread. - @Override - protected void onPostExecute(SpannableStringBuilder[] viewSourceStringArray){ - // Get a handle the activity. - Activity activity = activityWeakReference.get(); - - // Abort if the activity is gone. - if ((activity == null) || (activity.isFinishing())) { - return; - } - - // Get handles for the text views. - TextView requestHeadersTextView = activity.findViewById(R.id.request_headers); - TextView responseMessageTextView = activity.findViewById(R.id.response_message); - TextView responseHeadersTextView = activity.findViewById(R.id.response_headers); - TextView responseBodyTextView = activity.findViewById(R.id.response_body); - ProgressBar progressBar = activity.findViewById(R.id.progress_bar); - SwipeRefreshLayout swipeRefreshLayout = activity.findViewById(R.id.view_source_swiperefreshlayout); - - // Populate the text views. This can take a long time, and freeze the user interface, if the response body is particularly large. - requestHeadersTextView.setText(viewSourceStringArray[0]); - responseMessageTextView.setText(viewSourceStringArray[1]); - responseHeadersTextView.setText(viewSourceStringArray[2]); - responseBodyTextView.setText(viewSourceStringArray[3]); - - // Hide the progress bar. - progressBar.setIndeterminate(false); - progressBar.setVisibility(View.GONE); - - //Stop the swipe to refresh indicator if it is running - swipeRefreshLayout.setRefreshing(false); - } - } } \ No newline at end of file