These changes allow the user to record video using the Camcorder component.

appinventor/components/src/com/google/appinventor/components/common/YaVersion.java

@@ -291,6 +291,8 @@ public class YaVersion {
   // - The Shape property was added.
   public static final int BUTTON_COMPONENT_VERSION = 4;
 
+  public static final int CAMCORDER_COMPONENT_VERSION = 1;
+  
   public static final int CAMERA_COMPONENT_VERSION = 1;
 
   // For CANVAS_COMPONENT_VERSION 2:

appinventor/components/src/com/google/appinventor/components/runtime/Camcorder.java

+package com.google.appinventor.components.runtime;
+
+import com.google.appinventor.components.annotations.DesignerComponent;
+import com.google.appinventor.components.annotations.SimpleEvent;
+import com.google.appinventor.components.annotations.SimpleFunction;
+import com.google.appinventor.components.annotations.SimpleObject;
+import com.google.appinventor.components.common.ComponentCategory;
+import com.google.appinventor.components.common.YaVersion;
+import com.google.appinventor.components.runtime.util.ErrorMessages;
+
+import android.app.Activity;
+import android.content.ContentValues;
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Environment;
+import android.provider.MediaStore;
+import android.util.Log;
+
+import java.io.File;
+import java.util.Date;
+
+/*
+ * Camcorder provides access to the phone's camcorder
+ */
+
+@DesignerComponent(version = YaVersion.CAMCORDER_COMPONENT_VERSION,
+description = "A component to record a video using the device's camcorder. " +
+     "After the video is recorded, the name of the file on the phone " +
+     "containing the clip is available as an argument to the " +
+     "AfterRecording event. The file name can be used, for example, to set " +
+     "the source property of a VideoPlayer component.",
+category = ComponentCategory.MEDIA,
+nonVisible = true,
+//TODO: Give this a right proper icon, mate. 
+iconName = "images/camcorder.png")
+@SimpleObject
+public class Camcorder extends AndroidNonvisibleComponent 
+	implements ActivityResultListener, Component {
+	
+	private static final String CAMCORDER_INTENT = "android.media.action.VIDEO_CAPTURE";
+	  private static final String CAMCORDER_OUTPUT = "output";
+	  private final ComponentContainer container;
+	  private Uri clipFile;
+
+	  /* Used to identify the call to startActivityForResult. Will be passed back
+	  into the resultReturned() callback method. */
+	  private int requestCode;
+
+	   /**
+	   * Creates a Camcorder component.
+	   *
+	   * @param container container, component will be placed in
+	   */
+	  public Camcorder(ComponentContainer container) {
+	    super(container.$form());
+	    this.container = container;
+	  }
+	  
+	  /**
+	   * Records a video, then raises the AfterPicture event.
+	   */
+	  @SimpleFunction
+	  public void RecordVideo() {
+	    Date date = new Date();
+	    String state = Environment.getExternalStorageState();
+
+	    if (Environment.MEDIA_MOUNTED.equals(state)) {
+	      Log.i("CamcorderComponent", "External storage is available and writable");
+
+	      clipFile = Uri.fromFile(new File(Environment.getExternalStorageDirectory(),
+	        "/Pictures/app_inventor_" + date.getTime()
+	        + ".3gp"));
+
+	      ContentValues values = new ContentValues();
+	      values.put(MediaStore.Video.Media.DATA, clipFile.getPath());
+	      values.put(MediaStore.Video.Media.MIME_TYPE, "clip/3gp");
+	      values.put(MediaStore.Video.Media.TITLE, clipFile.getLastPathSegment());
+
+	      if (requestCode == 0) {
+	        requestCode = form.registerForActivityResult(this);
+	      }
+
+	      Uri clipUri = container.$context().getContentResolver().insert(
+	        MediaStore.Video.Media.INTERNAL_CONTENT_URI, values);
+	      Intent intent = new Intent(CAMCORDER_INTENT);
+	      intent.putExtra(CAMCORDER_OUTPUT, clipUri);
+	      container.$context().startActivityForResult(intent, requestCode);
+	    } else if (Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)) {
+	      form.dispatchErrorOccurredEvent(this, "RecordVideo",
+	          ErrorMessages.ERROR_MEDIA_EXTERNAL_STORAGE_READONLY);
+	    } else {
+	      form.dispatchErrorOccurredEvent(this, "RecordVideo",
+	          ErrorMessages.ERROR_MEDIA_EXTERNAL_STORAGE_NOT_AVAILABLE);
+	    }
+	  }
+	  
+	  @Override
+	  public void resultReturned(int requestCode, int resultCode, Intent data) {
+	    Log.i("CamcorderComponent",
+	      "Returning result. Request code = " + requestCode + ", result code = " + resultCode);
+	    if (requestCode == this.requestCode && resultCode == Activity.RESULT_OK) {
+	      File clip = new File(clipFile.getPath());
+	      if (clip.length() != 0) {
+	        AfterPicture(clipFile.toString());
+	      } else {
+	        deleteFile(clipFile);  // delete empty file
+	        // see if something useful got returned in the data
+	        if (data != null && data.getData() != null) {
+	          Uri tryClipUri = data.getData();
+	          Log.i("CamcorderComponent", "Calling Camcorder.AfterPicture with clip path "
+	              + tryClipUri.toString());
+	          AfterPicture(tryClipUri.toString());
+	        } else {
+	          Log.i("CamcorderComponent", "Couldn't find a clip file from the Camcorder result");
+	          form.dispatchErrorOccurredEvent(this, "TakeVideo",
+	              ErrorMessages.ERROR_CAMCORDER_NO_CLIP_RETURNED);
+	        }
+	      }
+	    } else {
+	      // delete empty file
+	      deleteFile(clipFile);
+	    }
+	  }
+
+	  private void deleteFile(Uri fileUri) {
+	    File fileToDelete = new File(fileUri.getPath());
+	    try {
+	      if (fileToDelete.delete()) {
+	        Log.i("CamcorderComponent", "Deleted file " + fileUri.toString());
+	      } else {
+	        Log.i("CamcorderComponent", "Could not delete file " + fileUri.toString());
+	      }
+	    } catch (SecurityException e) {
+	      Log.i("CamcorderComponent", "Got security exception trying to delete file "
+	          + fileUri.toString());
+	    }
+	  }
+
+	  /**
+	   * Indicates that a photo was taken with the camera and provides the path to
+	   * the stored picture.
+	   */
+	  @SimpleEvent
+	  public void AfterPicture(String clip) {
+	    EventDispatcher.dispatchEvent(this, "AfterPicture", clip);
+	  }
+}
+	  
+	 

appinventor/components/src/com/google/appinventor/components/runtime/util/ErrorMessages.java

@@ -21,6 +21,7 @@ public final class ErrorMessages {
   public static final int ERROR_LOCATION_SENSOR_LONGITUDE_NOT_FOUND = 102;
   // Camera errors
   public static final int ERROR_CAMERA_NO_IMAGE_RETURNED = 201;
+
   // Twitter errors
   public static final int ERROR_TWITTER_UNSUPPORTED_LOGIN_FUNCTION = 301;
   public static final int ERROR_TWITTER_BLANK_CONSUMER_KEY_OR_SECRET = 302;
@@ -113,8 +114,11 @@ public final class ErrorMessages {
   // Contact picker (and PhoneNumberPicker) errors
   public static final int ERROR_PHONE_UNSUPPORTED_CONTACT_PICKER = 1107;
   public static final int ERROR_PHONE_UNSUPPORTED_SEARCH_IN_CONTACT_PICKING = 1108;
-  // Please start the next group of error numbers at 1201.
-
+  //Camcorder errors
+  public static final int ERROR_CAMCORDER_NO_CLIP_RETURNED = 1201;
+  
+  // Please start the next group of error numbers at 1301.
+  
   // Mapping of error numbers to error message format strings.
   private static final Map<Integer, String> errorMessages;
   static {
@@ -309,6 +313,9 @@ public final class ErrorMessages {
         "The software used in this app cannot extract contacts from this type of phone.");
     errorMessages.put(ERROR_PHONE_UNSUPPORTED_SEARCH_IN_CONTACT_PICKING,
         "To pick contacts, pick them directly, without using search.");
+    // Camcorder errors
+    errorMessages.put(ERROR_CAMCORDER_NO_CLIP_RETURNED,
+        "The camcorder did not return a clip.");
   }
 
   private ErrorMessages() {