Develop Reference

Is it possible to set a shuttercallback for the default camera app

i know i can call the default camera app by doing
Intent callCameraApplicationIntent = new Intent();
callCameraApplicationIntent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
File photoFile = null;
try {
photoFile = createImageFile();
} catch (IOException e) {
e.printStackTrace();
}
callCameraApplicationIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(photoFile));
startActivityForResult(callCameraApplicationIntent, ACTIVITY_START_CAMERA_APP);
but i want to perform an action when the user takes an image... is that possible
or do i need to implement a camera preview on my own app?

If by performing an action, you mean you want to change the behavior the camera app, you cannot. You will need to create your own custom camera app.

Surface view Camera not saving video

private boolean prepareMediaRecorder(){
myCamera = getCameraInstance();
// set the orientation here to enable portrait recording.
setCameraDisplayOrientation(this,0,myCamera);
mediaRecorder = new MediaRecorder();
myCamera.unlock();
mediaRecorder.setCamera(myCamera);
mediaRecorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER);
mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
mediaRecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH));
String pathh=Environment.getExternalStorageDirectory().getPath();
Toast.makeText(getApplicationContext(), "Path is "+pathh,Toast.LENGTH_LONG).show();
mediaRecorder.setOutputFile("/sdcard/myvideo1.mp4");
//mediaRecorder.setOutputFile("/storage/sdcard0/myvideo1.mp4");
mediaRecorder.setMaxDuration(60000); // Set max duration 60 sec.
mediaRecorder.setMaxFileSize(50000000); // Set max file size 50Mb
mediaRecorder.setPreviewDisplay(myCameraSurfaceView.getHolder().getSurface());
mediaRecorder.setOrientationHint(MainActivity.orientation);
try {
mediaRecorder.prepare();
} catch (IllegalStateException e) {
releaseMediaRecorder();
return false;
} catch (IOException e) {
releaseMediaRecorder();
return false;
}
return true;
}
My task is to capture video using surface view and send that to server. I found 1st solution to capture video in surface and save it in memory using some stack overflow link. One is below.
Switch To Front Camera and Back Camera Android SurfaceView
At first the app starts and worked perfectly saved the video also. Then I deleted the video and then tried video was not saving in memory. I tried with renaming the file also not worked.
"lrwxrwxrwx" what is this code value mean in android. I find this in DDMS

The code is missing MediaScannerConnection.scanFile, which updates gallery. The code may be saving the videos, but the gallery will not show the videos. Restarting the phone will scan the gallery, and if videos were saved they will appear. Also, the files app will probably list the videos.
If the program is saving videos, add code at or near the end of the program, or override onPause:
MediaScannerConnection.scanFile(this, new String[]{videoPathName}, null, null);
videoPathName is a String you need to set to the path and name of the saved video.
If still not working, the following code should work, but you will still need to add the MediaScanner: http://sandyandroidtutorials.blogspot.com/2013/05/android-video-capture-tutorial.html

Android Studio emulator camera cannot save photos

Regardless of whether I use an emulated camera or use my webcam as the emulated device's camera, I cannot save photos. My code sets up a new file to save the photo, the camera activity pops up, but after I take the picture, hitting the 'save' or 'accept picture' button doesn't do anything. The only way I can return to my app's activity it by hitting cancel. This code works when I run it on my Galaxy S3, but not an emulated Nexus device. When I set up the device in AVD Manager, I always make sure to enable to set both cameras to either emulated or webcam0, whichever I am using, and I make sure to have an SD card (even though I save to internal memory) and internal storage sufficient for photos. In my manifest, I declare android.permission.INTERNET, android.permission.WRITE_EXTERNAL_STORAGE, and android.permission.CAMERA. Any ideas?
Here's my code where I start the camera intent:
private void dispatchTakePictureIntent(int position) {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
File photoFile = null;
try {
photoFile = createImageFile(position);
} catch (IOException ex) {
Log.v("photo", "photoFile failed.");
}
if (photoFile != null) {
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT,
Uri.fromFile(photoFile));
startActivityForResult(takePictureIntent, REQUEST_TAKE_PHOTO);
} else {
Log.v("tag", "photoFile was equal to null.");
}
}
}

Found a solution! The emulated camera wasn't returning because I used a bad directory (selected in createImageFile above) for saving the File. I started using the directory returned by Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES) and that solved the problem.

Intent does not set the camera parameters

I am opening camera app as external intent from my applications. I am using following code to invoke the camera and following are my conditions:
It should open the front camera.
Highest picture quality.
Flash light has to be on
Following is my code:
Intent action = new Intent("android.media.action.IMAGE_CAPTURE");
action.putExtra("android.intent.extras.CAMERA_FACING", 1);
action.putExtra("android.intent.extras.FLASH_MODE_ON", 1);
action.putExtra("android.intent.extras.QUALITY_HIGH", 1);
Now, it does open the front camera BUT it does not turn on the flash and it does not set the picture quality to high.
My Manifest file's permission section looks like following:
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.FLASHLIGHT"/>
<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus" />
<uses-feature android:name="android.hardware.camera.flash" />
is there anything that I am missing?

Unfortunately, when using the camera with Intent, the only extra parameter you can set is
MediaStore.EXTRA_OUTPUT
Eg
fileUri = getOutputMediaFileUri(MEDIA_TYPE_IMAGE); // create a file to save the image
intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri); // set the image file name
Which allows you to map where the Camera application will store the image.
Camera Facing intent extra can sometimes work:
action.putExtra("android.intent.extras.CAMERA_FACING", 1);
Looking in the android source files, there are some "test" methods that are in the Util class file but not officially documented:
(Util)
private static final String EXTRAS_CAMERA_FACING =
"android.intent.extras.CAMERA_FACING";
// This is for test only. Allow the camera to launch the specific camera.
public static int getCameraFacingIntentExtras(Activity currentActivity) {
int cameraId = -1;
int intentCameraId =
currentActivity.getIntent().getIntExtra(Util.EXTRAS_CAMERA_FACING, -1);
if (isFrontCameraIntent(intentCameraId)) {
// Check if the front camera exist
int frontCameraId = CameraHolder.instance().getFrontCameraId();
if (frontCameraId != -1) {
cameraId = frontCameraId;
}
} else if (isBackCameraIntent(intentCameraId)) {
// Check if the back camera exist
int backCameraId = CameraHolder.instance().getBackCameraId();
if (backCameraId != -1) {
cameraId = backCameraId;
}
}
return cameraId;
}
And in the photomodule, the following method is used:
(PhotoModule)
private int getPreferredCameraId(ComboPreferences preferences) {
int intentCameraId = Util.getCameraFacingIntentExtras(mActivity);
if (intentCameraId != -1) {
// Testing purpose. Launch a specific camera through the intent
// extras.
return intentCameraId;
} else {
return CameraSettings.readPreferredCameraId(preferences);
}
}
And when the camera app initialises the photo mode, it calls this method to check which camera to use:
mCameraId = getPreferredCameraId(mPreferences);

intent.putExtra("android.intent.extras.CAMERA_FACING", android.hardware.Camera.CameraInfo.CAMERA_FACING_FRONT);
this is an intent to start capture with the front camera instead of the default rear camera.
this works as it is used in this popular cordova plugin in this link at line 145 :
https://github.com/EddyVerbruggen/VideoCapturePlus-PhoneGap-Plugin/blob/master/src/android/nl/xservices/plugins/videocaptureplus/VideoCapturePlus.java
hope this helps anyone facing the same problem.
also do you know if you can set an intent to disable the camera controls(filters,switch between cameras..etc) , so that they doesn't show ?

using android intent to call and receive a result from camera app no matter if it is custom built

here is the problem: i have searched for an answer for this and so far i made it work for the custom camera app that comes with htc phones.
i have the folowing
protected void onActivityResult(int requestCode, int resultCode, Intent data){
if (requestCode == REQUEST_FROM_CAMERA && resultCode == RESULT_OK) {
InputStream is=null;
File file=mInterface.getTempFile();
try {
is=new FileInputStream(file);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
if(is==null){
try {
u = data.getData();
is=getContentResolver().openInputStream(u);
mInterface.saveStringPreferences(GlobalInterface.URI_SAVENAME, u.toString());
} catch (FileNotFoundException e) {
e.printStackTrace();
}
}
//Now "is" stream contains the required photo, you can process it
setImage(is);
}
//and this is the code to the function that calls the intent:
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
// intent.putExtra(MediaStore.EXTRA_OUTPUT,Uri.fromFile(mInterface.getTempFile()));
startActivityForResult(intent, REQUEST_FROM_CAMERA);
the remaining functions getTempFile() is to create a temp file on /sdcard/blabla.tmp
and a function to set the captured image in an image view.
so the problem is that i tested this code on the custom camera on a lg phone and it crashes. the question is: is there a way to get an uri for the image location (i dont need a specific save location it could be the default set from the camera) and there were also some issues i came across which i dont need to solve like getting a smaller resolution image. i just need one image and to be able to set it in an imageView and the method to work for every camera app that is there, custom or native regardless.
is this possible or i need to create a new camera class for this? in my opinion the camera apps that come with the phone are more adjusted to the phone model so i would prefer using them against building a custom one.
tnx.

Try this:
Bitmap thumbnail = (Bitmap) data.getExtras().get("data");
Source