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By 
20:16
Android Camra & Video
I have describe how to integrate camra in our application in android. The
camra used two way, first In built in android device,and second one making
camra Api in our application.1.Create new
android project file-new-android project-android application,open class MainActivity.java.2.camra need
set a hardware permission in androidManifest.xml
<!-- Accessing camera
hardware -->
<uses-feature android:name="android.hardware.camera"
/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"
/>
<uses-permission android:name="android.permission.RECORD_AUDIO"
/>
MainActivity.java
package info.androidhive.androidbignnerpoint;
import java.io.File;
import
java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import
android.app.Activity;
import
android.content.Intent;
import
android.content.pm.PackageManager;
import
android.graphics.Bitmap;
import
android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import
android.os.Environment;
import
android.provider.MediaStore;
import android.util.Log;
import android.view.View;
import
android.widget.Button;
import
android.widget.ImageView;
import
android.widget.Toast;
import
android.widget.VideoView;
public class MainActivity extends Activity {
//
Activity request codes
private static final int CAMERA_CAPTURE_IMAGE_REQUEST_CODE = 100;
private static final int CAMERA_CAPTURE_VIDEO_REQUEST_CODE = 200;
public static final int MEDIA_TYPE_IMAGE = 1;
public static final int MEDIA_TYPE_VIDEO = 2;
//
directory name to store captured images and videos
private static final String IMAGE_DIRECTORY_NAME = "Hello
Camera";
private Uri fileUri; // file url
to store image/video
private ImageView imgPreview;
private VideoView videoPreview;
private Button btnCapturePicture, btnRecordVideo;
@Override
protected void onCreate(Bundle
savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imgPreview = (ImageView)
findViewById(R.id.imgPreview);
videoPreview = (VideoView)
findViewById(R.id.videoPreview);
btnCapturePicture = (Button)
findViewById(R.id.btnCapturePicture);
btnRecordVideo = (Button)
findViewById(R.id.btnRecordVideo);
//
* Capture image button click event
btnCapturePicture.setOnClickListener(new
View.OnClickListener() {
@Override
public void onClick(View v) {
// capture picture
captureImage();
}
});
//* Record video button click event
btnRecordVideo.setOnClickListener(new
View.OnClickListener() {
@Override
public void onClick(View v) {
// record video
recordVideo();
}
});
//
Checking camera availability
if
(!isDeviceSupportCamera()) {
Toast.makeText(getApplicationContext(),
"Sorry doesn't
support camera",
Toast.LENGTH_LONG).show();
// will close the app if the device
does't have camera
finish();
}
}
//
* Checking device has camera hardware or not
private boolean
isDeviceSupportCamera() {
if
(getApplicationContext().getPackageManager().hasSystemFeature(
PackageManager.FEATURE_CAMERA)) {
// this device has a camera
return true;
} else {
// no camera on this device
return false;
}
}
//*
Capturing Camera Image will lauch camera app requrest
image capture
private void captureImage() {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
fileUri =
getOutputMediaFileUri(MEDIA_TYPE_IMAGE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
//
start the image capture Intent
startActivityForResult(intent, CAMERA_CAPTURE_IMAGE_REQUEST_CODE);
}
@Override
protected void
onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
//
save file url in bundle as it will be null on scren orientation
//
changes
outState.putParcelable("file_uri", fileUri);
}
@Override
protected void
onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
//
get the file url
fileUri =
savedInstanceState.getParcelable("file_uri");
}
//
Recording video
private void recordVideo() {
Intent intent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
fileUri =
getOutputMediaFileUri(MEDIA_TYPE_VIDEO);
//
set video quality
intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1);
intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri); // set the image
file
//
name
//
start the video capture Intent
startActivityForResult(intent, CAMERA_CAPTURE_VIDEO_REQUEST_CODE);
}
//*
Receiving activity result method will be called after closing the camera
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent
data) {
//
if the result is capturing Image
if (requestCode == CAMERA_CAPTURE_IMAGE_REQUEST_CODE) {
if (resultCode == RESULT_OK) {
// successfully captured the image
// display it in image view
previewCapturedImage();
} else if (resultCode == RESULT_CANCELED) {
// user cancelled Image capture
Toast.makeText(getApplicationContext(),
"User
cancelled image capture", Toast.LENGTH_SHORT)
.show();
} else {
// failed to capture image
Toast.makeText(getApplicationContext(),
"Sorry! Failed
to capture image", Toast.LENGTH_SHORT)
.show();
}
} else if (requestCode == CAMERA_CAPTURE_VIDEO_REQUEST_CODE) {
if (resultCode == RESULT_OK) {
// video successfully recorded
// preview the recorded video
previewVideo();
} else if (resultCode == RESULT_CANCELED) {
// user cancelled recording
Toast.makeText(getApplicationContext(),
"User
cancelled video recording", Toast.LENGTH_SHORT)
.show();
} else {
// failed to record video
Toast.makeText(getApplicationContext(),
"Sorry! Failed
to record video", Toast.LENGTH_SHORT)
.show();
}
}
}
// * Display image from a path to ImageView
private void
previewCapturedImage() {
try {
// hide video preview
videoPreview.setVisibility(View.GONE);
imgPreview.setVisibility(View.VISIBLE);
// bimatp factory
BitmapFactory.Options options = new
BitmapFactory.Options();
// downsizing image as it throws
OutOfMemory Exception for larger
// images
options.inSampleSize = 8;
final Bitmap bitmap =
BitmapFactory.decodeFile(fileUri.getPath(),
options);
imgPreview.setImageBitmap(bitmap);
} catch (NullPointerException e) {
e.printStackTrace();
}
}
//
* Previewing recorded video
private void previewVideo() {
try {
// hide image preview
imgPreview.setVisibility(View.GONE);
videoPreview.setVisibility(View.VISIBLE);
videoPreview.setVideoPath(fileUri.getPath());
// start playing
videoPreview.start();
} catch (Exception e) {
e.printStackTrace();
}
}
//*
------------ Helper Methods ----------------------
//*
Creating file uri to store image/video
public Uri
getOutputMediaFileUri(int type) {
return Uri.fromFile(getOutputMediaFile(type));
}
//*
returning image / video
private static File
getOutputMediaFile(int type) {
//
External sdcard location
File mediaStorageDir = new File(
Environment
.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),
IMAGE_DIRECTORY_NAME);
//
Create the storage directory if it does not exist
if
(!mediaStorageDir.exists()) {
if (!mediaStorageDir.mkdirs()) {
Log.d(IMAGE_DIRECTORY_NAME, "Oops! Failed
create "
+ IMAGE_DIRECTORY_NAME + "
directory");
return null;
}
}
//
Create a media file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss",
Locale.getDefault()).format(new Date());
File mediaFile;
if (type == MEDIA_TYPE_IMAGE) {
mediaFile = new
File(mediaStorageDir.getPath() + File.separator
+ "IMG_" + timeStamp + ".jpg");
} else if (type == MEDIA_TYPE_VIDEO) {
mediaFile = new
File(mediaStorageDir.getPath() + File.separator
+ "VID_" + timeStamp + ".mp4");
} else {
return null;
}
return mediaFile;
}
}
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