Android Capture Image From Camera And Save Example
Are you looking for a way to capture an image from the camera on your Android device and save it for later use? If so, you're in luck! In this article, we'll walk you through a step-by-step process for capturing images using the Android camera, and then saving those images to your device.
Step 1: Setting up the Camera
The first step in capturing an image using the Android camera is to set it up. In order to do this, you'll need to create an instance of the Camera object and pass it to a SurfaceView object, which will display the camera preview. Here's some code to get you started:
// Create an instance of the Camera objectCamera camera = Camera.open();// Create a SurfaceView object and pass the Camera instance to its constructorSurfaceView surfaceView = new SurfaceView(context);surfaceView.getHolder().addCallback(new SurfaceHolder.Callback() {@Overridepublic void surfaceCreated(SurfaceHolder holder) {try {camera.setPreviewDisplay(holder);camera.startPreview();} catch (IOException e) {e.printStackTrace();}}@Overridepublic void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {// Do nothing}@Overridepublic void surfaceDestroyed(SurfaceHolder holder) {camera.stopPreview();camera.release();}});This code creates an instance of the Camera object and a SurfaceView object, and passes the Camera instance to the SurfaceView object's constructor. It also sets up a callback to be notified when the SurfaceView's surface is created, changed, or destroyed.
Step 2: Capturing the Image
Once you've set up the camera, you can start capturing images. To do this, you'll need to call the Camera object's takePicture() method. Here's some code to get you started:
// Create a button to capture the imageButton captureButton = new Button(context);captureButton.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {camera.takePicture(null, null, new Camera.PictureCallback() {@Overridepublic void onPictureTaken(byte[] data, Camera camera) {// Do something with the image data}});}});This code creates a button that, when clicked, calls the takePicture() method on the Camera object. The takePicture() method takes three parameters: a ShutterCallback, a PictureCallback, and a PictureCallback. The PictureCallback is used to receive the image data when it's captured.
Step 3: Saving the Image
Now that you have the image data, you can save it to your device. To do this, you'll need to create a FileOutputStream object and write the image data to it. Here's some code to get you started:
// Save the image data to a fileFileOutputStream fos = null;try {fos = new FileOutputStream(filename);fos.write(data);} catch (FileNotFoundException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();} finally {if (fos != null) {try {fos.close();} catch (IOException e) {e.printStackTrace();}}}This code creates a FileOutputStream object and writes the image data to it. It also handles any exceptions that might be thrown, and closes the file output stream when it's done.
Conclusion
Now that you know how to capture images using the Android camera and save them to your device, you can start building your own image capture applications. Whether you're building a camera app, a social networking app, or anything in between, knowing how to capture and save images is an essential part of Android development.
