make share with newpipe part of newpipe

app/src/main/AndroidManifest.xml

@@ -76,6 +76,11 @@
                 <data android:scheme="vnd.youtube" />
                 <data android:scheme="vnd.youtube.launch" />
             </intent-filter>
+            <intent-filter>
+                <action android:name="android.intent.action.SEND" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <data android:mimeType="text/plain" />
+            </intent-filter>
         </activity>
         <activity
             android:name=".player.PlayVideoActivity"

app/src/main/java/org/schabi/newpipe/detail/VideoItemDetailActivity.java

@@ -17,6 +17,9 @@ import org.schabi.newpipe.R;
 import org.schabi.newpipe.extractor.NewPipe;
 import org.schabi.newpipe.extractor.StreamingService;
 
+import java.util.Collection;
+import java.util.HashSet;
+
 
 /**
  * Copyright (C) Christian Schabesberger 2015 <chris.schabesberger@mailbox.org>
@@ -38,6 +41,13 @@ import org.schabi.newpipe.extractor.StreamingService;
 
 public class VideoItemDetailActivity extends AppCompatActivity {
 
+    /**
+     * Removes invisible separators (\p{Z}) and punctuation characters including
+     * brackets (\p{P}). See http://www.regular-expressions.info/unicode.html for
+     * more details.
+     */
+    private final static String REGEX_REMOVE_FROM_URL = "[\\p{Z}\\p{P}]";
+
     private static final String TAG = VideoItemDetailActivity.class.toString();
 
     private VideoItemDetailFragment fragment;
@@ -86,39 +96,31 @@ public class VideoItemDetailActivity extends AppCompatActivity {
 
     private void handleIntent(Intent intent) {
         Bundle arguments = new Bundle();
-        // this means the video was called though another app
+        boolean autoplay = false;
         if (intent.getData() != null) {
+            // this means the video was called though another app
             videoUrl = intent.getData().toString();
-            StreamingService[] serviceList = NewPipe.getServices();
+            currentStreamingService = getServiceIdByUrl(videoUrl);
-            //StreamExtractor videoExtractor = null;
-            for (int i = 0; i < serviceList.length; i++) {
-                if (serviceList[i].getUrlIdHandlerInstance().acceptUrl(videoUrl)) {
-                    arguments.putInt(VideoItemDetailFragment.STREAMING_SERVICE, i);
-                    currentStreamingService = i;
-                    //videoExtractor = ServiceList.getService(i).getExtractorInstance();
-                    break;
-                }
-            }
             if(currentStreamingService == -1) {
                 Toast.makeText(this, R.string.url_not_supported_toast, Toast.LENGTH_LONG)
                         .show();
             }
-            //arguments.putString(VideoItemDetailFragment.VIDEO_URL,
+            autoplay = PreferenceManager.getDefaultSharedPreferences(this)
-            //        videoExtractor.getUrl(videoExtractor.getId(videoUrl)));//cleans URL
+                            .getBoolean(getString(R.string.autoplay_through_intent_key), false);
-            arguments.putString(VideoItemDetailFragment.VIDEO_URL, videoUrl);
+        } else if(intent.getStringExtra(Intent.EXTRA_TEXT) != null) {
-
+            //this means that vidoe was called through share menu
-            arguments.putBoolean(VideoItemDetailFragment.AUTO_PLAY,
+            String extraText = intent.getStringExtra(Intent.EXTRA_TEXT);
-                    PreferenceManager.getDefaultSharedPreferences(this)
+            videoUrl = getUris(extraText)[0];
-                            .getBoolean(getString(R.string.autoplay_through_intent_key), false));
+            currentStreamingService = getServiceIdByUrl(videoUrl);
         } else {
+            //this is if the video was called through another NewPipe activity
             videoUrl = intent.getStringExtra(VideoItemDetailFragment.VIDEO_URL);
             currentStreamingService = intent.getIntExtra(VideoItemDetailFragment.STREAMING_SERVICE, -1);
+        }
+        arguments.putBoolean(VideoItemDetailFragment.AUTO_PLAY, autoplay);
         arguments.putString(VideoItemDetailFragment.VIDEO_URL, videoUrl);
         arguments.putInt(VideoItemDetailFragment.STREAMING_SERVICE, currentStreamingService);
-            arguments.putBoolean(VideoItemDetailFragment.AUTO_PLAY, false);
-        }
         addFragment(arguments);
-
     }
 
     private void addFragment(final Bundle arguments) {
@@ -171,4 +173,70 @@ public class VideoItemDetailActivity extends AppCompatActivity {
         fragment.onCreateOptionsMenu(menu, getMenuInflater());
         return true;
     }
+
+
+    /**
+     * Retrieves all Strings which look remotely like URLs from a text.
+     * Used if NewPipe was called through share menu.
+     *
+     * @param sharedText text to scan for URLs.
+     * @return potential URLs
+     */
+    private String[] getUris(final String sharedText) {
+        final Collection<String> result = new HashSet<>();
+        if (sharedText != null) {
+            final String[] array = sharedText.split("\\p{Space}");
+            for (String s : array) {
+                s = trim(s);
+                if (s.length() != 0) {
+                    if (s.matches(".+://.+")) {
+                        result.add(removeHeadingGibberish(s));
+                    } else if (s.matches(".+\\..+")) {
+                        result.add("http://" + s);
+                    }
+                }
+            }
+        }
+        return result.toArray(new String[result.size()]);
+    }
+
+    private static String removeHeadingGibberish(final String input) {
+        int start = 0;
+        for (int i = input.indexOf("://") - 1; i >= 0; i--) {
+            if (!input.substring(i, i + 1).matches("\\p{L}")) {
+                start = i + 1;
+                break;
+            }
+        }
+        return input.substring(start, input.length());
+    }
+
+    private static String trim(final String input) {
+        if (input == null || input.length() < 1) {
+            return input;
+        } else {
+            String output = input;
+            while (output.length() > 0 && output.substring(0, 1).matches(REGEX_REMOVE_FROM_URL)) {
+                output = output.substring(1);
+            }
+            while (output.length() > 0
+                    && output.substring(output.length() - 1, output.length()).matches(REGEX_REMOVE_FROM_URL)) {
+                output = output.substring(0, output.length() - 1);
+            }
+            return output;
+        }
+    }
+
+    private int getServiceIdByUrl(String url) {
+        StreamingService[] serviceList = NewPipe.getServices();
+        int service = -1;
+        for (int i = 0; i < serviceList.length; i++) {
+            if (serviceList[i].getUrlIdHandlerInstance().acceptUrl(videoUrl)) {
+                service = i;
+                //videoExtractor = ServiceList.getService(i).getExtractorInstance();
+                break;
+            }
+        }
+        return service;
+    }
 }