This Application uses the Camera API to select and take pictures and video. More...

Inheritance diagram for edu.clemson.cameraexample.MainActivity:

Public Member Functions
boolean	onCreateOptionsMenu (Menu menu)
	Inflate the menu; this adds items to the action bar if it is present. More...

boolean	onOptionsItemSelected (MenuItem item)
	Handles menu item selection. More...

Protected Member Functions
void	onCreate (Bundle savedInstanceState)
	Method called when activity is created. Sets the content view to activity_main or activity_main_landscape, depending on orientation. More...

void	dispatchSelectImageIntent ()
	Start the intent to select an image. More...

void	dispatchSelectVideoIntent ()
	Start the intent to select an video. More...

void	dispatchTakePictureIntent ()
	Start the intent take a picture with the camera. More...

File	createImageFile () throws IOException
	Create a .jpg file to hold the image. More...

void	dispatchTakeVideoIntent (int videoQuality)
	Start the intent take a video with the camera. More...

File	createVideoFile (int videoQuality) throws IOException
	Create a .jpg file to hold the image. More...

void	onSaveInstanceState (Bundle outState)
	Here we store the file url as it will be null after returning from camera app. More...

void	onRestoreInstanceState (Bundle savedInstanceState)
	Here we restore the fileUri again. More...

void	rotateAndSetImage (ImageView imageView, String path)
	Rotate the image to always be in portrait mode. Workaround needed for some Androids. More...

void	onActivityResult (int requestCode, int resultCode, Intent data)
	Work with results of activity. More...

Private Attributes
Uri	mediaUri
	This contains the uri of the newly taken picture or video. More...

VideoView	videoView
	The associated VideoView for this activity. More...

ImageView	imageView
	The associated imageView for this activity. More...

TextView	videoTextView
	Information for the videoView. More...

TextView	imageTextView

Static Private Attributes
static final int	IMAGE_REQUEST_CODE = 1

static final int	REQUEST_IMAGE_CAPTURE = 2

static final int	REQUEST_VIDEO_CAPTURE = 3

static final int	VIDEO_REQUEST_CODE = 4

static final int	LOW_QUALITY_VIDEO = 0

static final int	HIGH_QUALITY_VIDEO = 1

static final String	IMAGE_DIRECTORY ="images"

static final String	VIDEO_DIRECTORY ="videos"

Detailed Description

This Application uses the Camera API to select and take pictures and video.

Author: James Burton (jburto2 AT clemson DOT edu)

Definition at line 35 of file MainActivity.java.

Member Function Documentation

protected file edu.clemson.cameraexample.MainActivity.createImageFile ( ) throws IOException

protected

Create a .jpg file to hold the image.

Returns: New image File.

Definition at line 289 of file MainActivity.java.

References edu.clemson.cameraexample.MainActivity.IMAGE_DIRECTORY.

Referenced by edu.clemson.cameraexample.MainActivity.dispatchTakePictureIntent().

protected file edu.clemson.cameraexample.MainActivity.createVideoFile ( int videoQuality ) throws IOException

protected

Create a .jpg file to hold the image.

Parameters

videoQuality High or low quality video

Returns: New Video File.

Definition at line 364 of file MainActivity.java.

References edu.clemson.cameraexample.MainActivity.LOW_QUALITY_VIDEO, and edu.clemson.cameraexample.MainActivity.VIDEO_DIRECTORY.

Referenced by edu.clemson.cameraexample.MainActivity.dispatchTakeVideoIntent().

protected void edu.clemson.cameraexample.MainActivity.dispatchSelectImageIntent ( )

protected

Start the intent to select an image.

See more about working with an image picker from http://www.vogella.com/tutorials/AndroidCamera/article.html

Definition at line 203 of file MainActivity.java.

References edu.clemson.cameraexample.MainActivity.IMAGE_REQUEST_CODE.

Referenced by edu.clemson.cameraexample.MainActivity.onOptionsItemSelected().

protected void edu.clemson.cameraexample.MainActivity.dispatchSelectVideoIntent ( )

protected

Start the intent to select an video.

See more about working with an image picker from http://www.vogella.com/tutorials/AndroidCamera/article.html

Definition at line 224 of file MainActivity.java.

References edu.clemson.cameraexample.MainActivity.VIDEO_REQUEST_CODE.

Referenced by edu.clemson.cameraexample.MainActivity.onOptionsItemSelected().

protected void edu.clemson.cameraexample.MainActivity.dispatchTakePictureIntent ( )

protected

Start the intent take a picture with the camera.

Started with this http://developer.android.com/training/camera/photobasics.html But ran into this problem http://stackoverflow.com/questions/13912095/java-lang-nullpointerexception-on-bundle-extras-data-getextras If a new picture or video is saved to an external file and not to the gallery, then the data returned from the intent will be null. Therefore, the uri information must be stored in an instance variable.

Definition at line 246 of file MainActivity.java.

References edu.clemson.cameraexample.MainActivity.createImageFile(), edu.clemson.cameraexample.MainActivity.mediaUri, and edu.clemson.cameraexample.MainActivity.REQUEST_IMAGE_CAPTURE.

Referenced by edu.clemson.cameraexample.MainActivity.onOptionsItemSelected().

protected void edu.clemson.cameraexample.MainActivity.dispatchTakeVideoIntent ( int videoQuality )

protected

Start the intent take a video with the camera.

Parameters

videoQuality LOW_QUALITY_VIDEO or HIGH_QUALITY_VIDEO

Started with this http://developer.android.com/training/camera/photobasics.html But ran into this problem http://stackoverflow.com/questions/13912095/java-lang-nullpointerexception-on-bundle-extras-data-getextras If a new picture or video is saved to an external file and not to the gallery, then the data returned from the intent will be null. Therefore, the uri information must be stored in an instance variable.

Definition at line 313 of file MainActivity.java.

References edu.clemson.cameraexample.MainActivity.createVideoFile(), edu.clemson.cameraexample.MainActivity.mediaUri, and edu.clemson.cameraexample.MainActivity.REQUEST_VIDEO_CAPTURE.

Referenced by edu.clemson.cameraexample.MainActivity.onOptionsItemSelected().

edu.clemson.cameraexample.MainActivity.onActivityResult	(	int	requestCode,
		int	resultCode,
		Intent	data
	)

protected

Work with results of activity.

Parameters

requestCode	Request Code sent to activity
resultCode	Result Code returned to activity
data	Data associated with the intent that called this activity.

Big catchall for all the result of all the activities that can be launched by this activity. Action is determined by requestCode and resultCode.

Creating thumbnails for video: http://android-er.blogspot.com/2011/05/create-thumbnail-for-video-using.html

Fixed null pointer exceptions from - http://www.androidhive.info/2013/09/android-working-with-camera-api/

Creating thumbnails for video: http://android-er.blogspot.com/2011/05/create-thumbnail-for-video-using.html

Definition at line 473 of file MainActivity.java.

References edu.clemson.cameraexample.MainActivity.IMAGE_REQUEST_CODE, edu.clemson.cameraexample.MainActivity.mediaUri, edu.clemson.cameraexample.MainActivity.REQUEST_IMAGE_CAPTURE, edu.clemson.cameraexample.MainActivity.REQUEST_VIDEO_CAPTURE, and edu.clemson.cameraexample.MainActivity.VIDEO_REQUEST_CODE.

protected void edu.clemson.cameraexample.MainActivity.onCreate ( Bundle savedInstanceState )

protected

Method called when activity is created. Sets the content view to activity_main or activity_main_landscape, depending on orientation.

Parameters

savedInstanceState

Information about VideoView http://www.techotopia.com/index.php/Implementing_Video_Playback_on_Android_using_the_VideoView_and_MediaController_Classes

http://stackoverflow.com/questions/3686729/mediacontroller-positioning-over-videoview

Definition at line 100 of file MainActivity.java.

References edu.clemson.cameraexample.MainActivity.imageTextView, edu.clemson.cameraexample.MainActivity.imageView, edu.clemson.cameraexample.MainActivity.videoTextView, and edu.clemson.cameraexample.MainActivity.videoView.

public boolean edu.clemson.cameraexample.MainActivity.onCreateOptionsMenu ( Menu menu )

Inflate the menu; this adds items to the action bar if it is present.

Parameters

menu	Menu to be created.

Returns: true

Definition at line 146 of file MainActivity.java.

public boolean edu.clemson.cameraexample.MainActivity.onOptionsItemSelected ( MenuItem item )

Handles menu item selection.

Parameters

item	MenuItem that was selected

Returns: true

Definition at line 161 of file MainActivity.java.

References edu.clemson.cameraexample.MainActivity.dispatchSelectImageIntent(), edu.clemson.cameraexample.MainActivity.dispatchSelectVideoIntent(), edu.clemson.cameraexample.MainActivity.dispatchTakePictureIntent(), edu.clemson.cameraexample.MainActivity.dispatchTakeVideoIntent(), edu.clemson.cameraexample.MainActivity.HIGH_QUALITY_VIDEO, and edu.clemson.cameraexample.MainActivity.LOW_QUALITY_VIDEO.

protected void edu.clemson.cameraexample.MainActivity.onRestoreInstanceState ( Bundle savedInstanceState )

protected

Here we restore the fileUri again.

See #11 at: http://www.androidhive.info/2013/09/android-working-with-camera-api/

Definition at line 415 of file MainActivity.java.

References edu.clemson.cameraexample.MainActivity.mediaUri.

protected void edu.clemson.cameraexample.MainActivity.onSaveInstanceState ( Bundle outState )

protected

Here we store the file url as it will be null after returning from camera app.

See #11 at: http://www.androidhive.info/2013/09/android-working-with-camera-api/

Definition at line 401 of file MainActivity.java.

References edu.clemson.cameraexample.MainActivity.mediaUri.

protected void edu.clemson.cameraexample.MainActivity.rotateAndSetImage	(	ImageView	imageView,
		String	path
	)

protected

Rotate the image to always be in portrait mode. Workaround needed for some Androids.

Rotating images from http://www.higherpass.com/Android/Tutorials/Working-With-Images-In-Android/3/

Definition at line 428 of file MainActivity.java.

Member Data Documentation

final int edu.clemson.cameraexample.MainActivity.HIGH_QUALITY_VIDEO = 1

staticprivate

Definition at line 46 of file MainActivity.java.

Referenced by edu.clemson.cameraexample.MainActivity.onOptionsItemSelected().

final String edu.clemson.cameraexample.MainActivity.IMAGE_DIRECTORY ="images"

staticprivate

Definition at line 50 of file MainActivity.java.

Referenced by edu.clemson.cameraexample.MainActivity.createImageFile().

final int edu.clemson.cameraexample.MainActivity.IMAGE_REQUEST_CODE = 1

staticprivate

Definition at line 39 of file MainActivity.java.

Referenced by edu.clemson.cameraexample.MainActivity.dispatchSelectImageIntent(), and edu.clemson.cameraexample.MainActivity.onActivityResult().

TextView edu.clemson.cameraexample.MainActivity.imageTextView

private

Definition at line 88 of file MainActivity.java.

Referenced by edu.clemson.cameraexample.MainActivity.onCreate().

private ImageView edu.clemson.cameraexample.MainActivity.imageView

private

The associated imageView for this activity.

Definition at line 74 of file MainActivity.java.

Referenced by edu.clemson.cameraexample.MainActivity.onCreate().

final int edu.clemson.cameraexample.MainActivity.LOW_QUALITY_VIDEO = 0

staticprivate

Definition at line 45 of file MainActivity.java.

Referenced by edu.clemson.cameraexample.MainActivity.createVideoFile(), and edu.clemson.cameraexample.MainActivity.onOptionsItemSelected().

private Uri edu.clemson.cameraexample.MainActivity.mediaUri

private

This contains the uri of the newly taken picture or video.

I started with the tutorial at http://developer.android.com/training/camera/photobasics.html, but ran into this problem http://stackoverflow.com/questions/13912095/java-lang-nullpointerexception-on-bundle-extras-data-getextras If a new picture or video is saved to an external file and not to the gallery, then the data returned from the intent will be null. Therefore, the uri information must be stored in an instance variable.

Definition at line 62 of file MainActivity.java.

Referenced by edu.clemson.cameraexample.MainActivity.dispatchTakePictureIntent(), edu.clemson.cameraexample.MainActivity.dispatchTakeVideoIntent(), edu.clemson.cameraexample.MainActivity.onActivityResult(), edu.clemson.cameraexample.MainActivity.onRestoreInstanceState(), and edu.clemson.cameraexample.MainActivity.onSaveInstanceState().

final int edu.clemson.cameraexample.MainActivity.REQUEST_IMAGE_CAPTURE = 2

staticprivate

Definition at line 40 of file MainActivity.java.

Referenced by edu.clemson.cameraexample.MainActivity.dispatchTakePictureIntent(), and edu.clemson.cameraexample.MainActivity.onActivityResult().

final int edu.clemson.cameraexample.MainActivity.REQUEST_VIDEO_CAPTURE = 3

staticprivate

Definition at line 41 of file MainActivity.java.

Referenced by edu.clemson.cameraexample.MainActivity.dispatchTakeVideoIntent(), and edu.clemson.cameraexample.MainActivity.onActivityResult().

final String edu.clemson.cameraexample.MainActivity.VIDEO_DIRECTORY ="videos"

staticprivate