I am creating a app that opens camera for user and after image captured it will be shows on ImageView! But the image in ImageView has very bad quality
here is the code:
public class Camera extends AppCompatActivity implements View.OnClickListener {
ImageView imgView;
Button camera, setBackground;
Intent i;
int cameraData = 0;
Bitmap bitmap;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.camera);
initialize();
}
private void initialize() {
imgView = (ImageView) findViewById(R.id.bPicture);
camera = (Button) findViewById(R.id.bOpenCamera);
setBackground = (Button) findViewById(R.id.bSetBackground);
camera.setOnClickListener(this);
setBackground.setOnClickListener(this);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(resultCode == RESULT_OK){
Bundle extras = data.getExtras();
bitmap = (Bitmap) extras.get("data");
Bitmap resizedBmp = Bitmap.createScaledBitmap(bitmap, imgView.getWidth(),imgView.getHeight(), false);
imgView.setImageBitmap(resizedBmp);
}
}
#Override
public void onClick(View v) {
switch(v.getId()){
case R.id.bOpenCamera:
i = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(i, cameraData);
break;
case R.id.bSetBackground:
try {
WallpaperManager wallmngr = WallpaperManager.getInstance(this);
wallmngr.setBitmap(bitmap);
} catch (IOException e) {
e.printStackTrace();
}
break;
}
}
}
what should I do to increase image quality?
Use something other than the thumbnail. Quoting the documentation for ACTION_IMAGE_CAPTURE, with emphasis added:
The caller may pass an extra EXTRA_OUTPUT to control where this image will be written. If the EXTRA_OUTPUT is not present, then a small sized image is returned as a Bitmap object in the extra field. This is useful for applications that only need a small image. If the EXTRA_OUTPUT is present, then the full-sized image will be written to the Uri value of EXTRA_OUTPUT.
So, specify a Uri in EXTRA_OUTPUT where a full camera image should be written to. Then, use an image-loading library, like Picasso, to load the photo into your ImageView.
Here is a sample app that demonstrates using EXTRA_OUTPUT.
This is how I made it work for me! Assuming you are capturing an image, and would like to show the captured image in a new Activity, you can follow this way:
First on the click of button you can:
public void cameraFuture(View view) // <-- onClick() method of Camera Button
{
Intent intent= new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
File file = new File(Environment.getExternalStorageDirectory(),
"MyPhoto.jpg");
outPutfileUri = Uri.fromFile(file);
intent.putExtra(MediaStore.EXTRA_OUTPUT, outPutfileUri);
startActivityForResult(intent, TAKE_PIC);
}
Then on the onActivityResult() method, you can do this way:
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == TAKE_PIC && resultCode==RESULT_OK){
Toast.makeText(this, outPutfileUri.toString(),Toast.LENGTH_LONG).show();
Intent bitIntent = new Intent(this, CameraTake.class);
bitIntent.putExtra("imageUri", outPutfileUri);
startActivity(bitIntent);
finish();
}
}
And in the next Activity, you can receive the file this way:
Intent receiveIntent = getIntent();
uri = receiveIntent.getParcelableExtra("imageUri");
if (savedInstanceState == null) {
Bundle extras = getIntent().getExtras();
if(extras == null) {
receiveImg= null;
} else {
receiveImg= extras.getString("PASSER");
}
} else {
receiveImg= (String) savedInstanceState.getSerializable("PASSER");
}
File imgFile = new File(Environment.getExternalStorageDirectory(),"MyPhoto.jpg");
if(imgFile.exists()){
Bitmap myBitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath());
ImageView myImage = (ImageView) findViewById(R.id.camOut);
myImage.setImageBitmap(myBitmap);
}
Related
http://www.c-sharpcorner.com/UploadFile/9e8439/how-to-make-a-custom-camera-ion-android/I have made a custom camera app and after click a picture i want to preview it in an image view but when i am previewing it in image view,image is being scaled from actual size of picture.
his is how I made it work for me! Assuming you are capturing an image, and would like to show the captured image in a new Activity, you can follow this way:
First on the click of button you can:
public void cameraFuture(View view) // <-- onClick() method of Camera Button
{
Intent intent= new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
File file = new File(Environment.getExternalStorageDirectory(),
"MyPhoto.jpg");
outPutfileUri = Uri.fromFile(file);
intent.putExtra(MediaStore.EXTRA_OUTPUT, outPutfileUri);
startActivityForResult(intent, TAKE_PIC);
}
Then on the onActivityResult() method, you can do this way:
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == TAKE_PIC && resultCode==RESULT_OK){
Toast.makeText(this, outPutfileUri.toString(),Toast.LENGTH_LONG).show();
Intent bitIntent = new Intent(this, CameraTake.class);
bitIntent.putExtra("imageUri", outPutfileUri);
startActivity(bitIntent);
finish();
}
}
And in the next Activity, you can receive the file this way:
Intent receiveIntent = getIntent();
uri = receiveIntent.getParcelableExtra("imageUri");
if (savedInstanceState == null) {
Bundle extras = getIntent().getExtras();
if(extras == null) {
receiveImg= null;
} else {
receiveImg= extras.getString("PASSER");
}
} else {
receiveImg= (String) savedInstanceState.getSerializable("PASSER");
}
File imgFile = new File(Environment.getExternalStorageDirectory(),"MyPhoto.jpg");
if(imgFile.exists()){
Bitmap myBitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath());
ImageView myImage = (ImageView) findViewById(R.id.camOut);
myImage.setImageBitmap(myBitmap);
}
Hope it helps!
This link completely described what you want. Here is the summary:
1- Add this to the Manifest:
< uses-feature android:name="android.hardware.camera" android:required="true" />
2- Add this line to your class:
static final int REQUEST_IMAGE_CAPTURE = 1;
3- call this method where you want to open camera:
private void dispatchTakePictureIntent() {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE);
}
}
4- Override onActivityResult:
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK) {
Bundle extras = data.getExtras();
Bitmap imageBitmap = (Bitmap) extras.get("data");
ImageView ivImage = (ImageView) findViewById(R.id.ivImage);
ivImage.setImageBitmap(imageBitmap);
}
}
I hope it help you.
When I take an image and set it to imageview and then restart my app, imageview will be set to blank. What could the issue be?
Here is my code:
private void initialize() {
iv = (ImageView) findViewById(R.id.breturnpic);
ib = (ImageButton) findViewById(R.id.btakepic);
b = (Button) findViewById((R.id.bset));
b.setOnClickListener(this);
ib.setOnClickListener(this);}
#Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.bset: {
try {
getApplicationContext().setWallpaper(bmp);
} catch (IOException e) {
e.printStackTrace();
}
break;
}
case R.id.btakepic: {
i = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(i, cameradata);
break;}}}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK) {
Bundle extras = data.getExtras();
bmp = (Bitmap) extras.get("data");
iv.setImageBitmap(bmp);}}
If you want to use the image picked on previous app sessions you should persist the data somehow. If is just an image you could save it in your device and keep a reference to the image's URI in your app's shared preferences.
You could also use your database to save these URI in a more structured fashion.
I have implemented Camera via Intent and set that Image in Imageview which is appearing blurred, while the same Image appear's clear in ImageGallery. The code and related picture are as follows :
Image saved in SD CARD
Blurred image in Imageview
Activity Class :
public class MainActivity extends ActionBarActivity {
Button b1,b2;
ImageView iv;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
b1=(Button)findViewById(R.id.button);
iv=(ImageView)findViewById(R.id.imageView);
b1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, 0);
}
});
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
Bitmap bp = (Bitmap) data.getExtras().get("data");
iv.setImageBitmap(bp);
}
File is being saved in sdcard and also I retrive its URI sucessfully, but still imageview do not show this image or imageview disappear when camera click and return. Code are as follows -:
public class MainActivity extends Activity {
static int TAKE_PIC =1;
Uri outPutfileUri;
ImageView mImageView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mImageView = (ImageView) findViewById(R.id.image);
}
public void CameraClick(View v) {
Intent intent= new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
File file = new File(Environment.getExternalStorageDirectory(),
"MyPhoto.jpg");
outPutfileUri = Uri.fromFile(file);
intent.putExtra(MediaStore.EXTRA_OUTPUT, outPutfileUri);
startActivityForResult(intent, TAKE_PIC);
}
Bitmap bitmap = null;
#Override
protected void onActivityResult(int requestCode, int resultCode,Intent data)
{
if (requestCode == TAKE_PIC && resultCode==RESULT_OK) {
String uri = outPutfileUri.toString();
Log.e("uri-:", uri);
mImageView.setImageURI(Uri.parse(uri));
}
}}
Please suggest me how to get path of clicked image and set it to imageview. I am new here.
First of all, the image is blurred because the intent data contains only the thumbnail of the image.
you must save the image on the internal/external storage and then acquire it.
feel free to take a look at the android developers documentation regarding camera images:
Android Developers
and this older SO answer explains how to retrieve the full size image after saving it :
Android get full size image from camera
Try This,
public class MainActivity extends Activity {
static int TAKE_PIC =1;
Uri outPutfileUri;
ImageView mImageView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mImageView = (ImageView) findViewById(R.id.image);
}
public void CameraClick(View v) {
Intent intent= new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
File file = new File(Environment.getExternalStorageDirectory(),
"MyPhoto.jpg");
outPutfileUri = Uri.fromFile(file);
intent.putExtra(MediaStore.EXTRA_OUTPUT, outPutfileUri);
startActivityForResult(intent, TAKE_PIC);
}
Bitmap bitmap = null;
#Override
protected void onActivityResult(int requestCode, int resultCode,Intent data)
{
if (requestCode == TAKE_PIC && resultCode==RESULT_OK) {
String uri = outPutfileUri.toString();
Log.e("uri-:", uri);
Toast.makeText(this, outPutfileUri.toString(),Toast.LENGTH_LONG).show();
//Bitmap myBitmap = BitmapFactory.decodeFile(uri);
// mImageView.setImageURI(Uri.parse(uri)); OR drawable make image strechable so try bleow also
try {
bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), outPutfileUri);
Drawable d = new BitmapDrawable(getResources(), bitmap);
mImageView.setImageDrawable(d);
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
Hope this will help you enjoy!!!!!
I am developing an Android Application that captures an image then processes it using opencv functions, then returns the resulting image and displays it in image view. How can I save the captured image temporarily in order to process it?
public class Camera extends Activity
{
ImageView imgview;
Bitmap Bmp;
final static int cameraData=0;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.camera);
imgview= (ImageView) findViewById(R.id.imgview);
Intent i=new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(i,cameraData);
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
if(resultCode == RESULT_OK)
{
Bundle extras=data.getExtras();
Bmp=(Bitmap)extras.get("data");
imgview.setImageBitmap(Bmp);
}
}
}
You can save the bitmap to the cache folder of the application as follows:
String destFolder = getCacheDir().getAbsolutePath();
FileOutputStream out = new FileOutputStream(destFolder + "/myBitamp.png");
bmp.compress(Bitmap.CompressFormat.PNG, 100, out);
how to store the imagePath of the image that I had captured using the camera activity to database. I also need to retrieve that imagePath and display on another activity?
Can someone help me please?
Update:
public class Image_secondPage extends Activity
{
public static final int CAMERA_RESULT = 1;
Button btn1;
ImageView imageView1;
private final String tag = getClass().getName();
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.image_secondpage);
imageView1 = (ImageView)findViewById(R.id.imageView1);
Button btnNext = (Button)findViewById(R.id.buttonNext);
btnNext.setOnClickListener(new View.OnClickListener()
{
#Override
public void onClick(View v)
{
Intent intent = new Intent(Image_secondPage.this, ImagesPage.class);
startActivity(intent);
}
});
PackageManager pm = getPackageManager();
if(pm.hasSystemFeature(PackageManager.FEATURE_CAMERA))
{
Intent i = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
i.putExtra(MediaStore.EXTRA_OUTPUT, MyFileContentProvider.CONTENT_URI);
startActivityForResult(i, CAMERA_RESULT);
}
else
{
Toast.makeText(getBaseContext(), "Camera is not available", Toast.LENGTH_LONG).show();
}
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
super.onActivityResult(requestCode, resultCode, data);
Log.i(tag, "Receive the camera result");
if(resultCode == RESULT_OK && requestCode == CAMERA_RESULT)
{
File out = new File(getFilesDir(), "newImage.jpg");
if(!out.exists())
{
Toast.makeText(getBaseContext(), "Error while capturing image", Toast.LENGTH_LONG).show();
return;
}
Bitmap mBitmap = BitmapFactory.decodeFile(out.getAbsolutePath());
imageView1.setImageBitmap(mBitmap);
}
}
#Override
protected void onDestroy()
{
super.onDestroy();
imageView1 = null;
}
I am supposed to get the imagePath that I have captured and show the image on the imageView that I had on the next class but I don't know how. Can someone help me?
try use this
bitmap = (Bitmap) data.getExtras().get("data");
this will give you bitmap image, then you can save it to database or anything you want.
let me know if this not solve your problem.