I am pretty new to android studio(and java) and i am attempting to make a video processing application. I want the program to upload a video from the users gallery, and then take a picture of the video every second and save it into an array. Logically the code I have written makes sense to me and there are no errors, but when I run the app on my Samsung tablet it crashes after taking the video. I think the setDataSource is unable to find the correct data source, but im not sure how to pass the data from the video along. Can anyone help?
Heres my code:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
savedimage = (ImageView) findViewById(R.id.imageView);
}
public void activity(View view) {
startActivityForResult(new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Video.Media.INTERNAL_CONTENT_URI), GET_FROM_GALLERY);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
MediaMetadataRetriever retriever = new MediaMetadataRetriever();
Uri videouri = data.getData();
retriever.setDataSource(String.valueOf(videouri));
String time = retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION);
long timeInmillisec = Long.parseLong(time);
long seconds = timeInmillisec / 1000;
ArrayList<Bitmap> mylist = new ArrayList<Bitmap>();
for (int i = 0; i < seconds; i++) {
Bitmap bArray = retriever.getFrameAtTime(100000 * i, MediaMetadataRetriever.OPTION_CLOSEST);
mylist.add(bArray);
}
}
Since your videouri is a Uri, try calling void setDataSource (Context context, Uri uri) instead of void setDataSource (String path):
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
// check for resultCode & requestCode
if (resultCode == RESULT_OK) {
if (requestCode == GET_FROM_GALLERY) {
MediaMetadataRetriever retriever = new MediaMetadataRetriever();
Uri videouri = data.getData();
// "videouri" is Uri, call setDataSource (Context context, Uri uri) instead
retriever.setDataSource(this, videouri);
.....
}
}
Related
I implemented this git on my current project without cloning
implementation 'com.github.adityaarora1:LiveEdgeDetection:master-SNAPSHOT'
But I'm unable to call it on my method. The document says
Start startActivityForResult from your activity
startActivityForResult(new Intent(this, ScanActivity.class), REQUEST_CODE);
Get a file path for cropped image on onActivityResult
String filePath = data.getExtras().getString(ScanConstants.SCANNED_RESULT);
Bitmap baseBitmap = ScanUtils.decodeBitmapFromFile(filePath, ScanConstants.IMAGE_NAME);
So I tried calling like this onClick button from a new Class
scan.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent myIntent = new Intent(MainActivity.this,
ScanActivity.class);
startActivity(myIntent);
}
and put the rest inside my onActivityResult
protected void onActivityResult(int requestCode, int resultCode, #Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
String filePath = data.getExtras().getString(ScanConstants.SCANNED_RESULT);
Bitmap baseBitmap = ScanUtils.decodeBitmapFromFile(filePath, ScanConstants.IMAGE_NAME);
}
Edit: here is the MainActivity the author used on git I tried using it I get this error:
scannedImageView = findViewById(com.adityaarora.liveedgedetection.R.id.scanned_image);
MainActivity (imported)
private static final int REQUEST_CODE = 101;
private ImageView scannedImageView;
Button scan;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_scan);
scannedImageView = findViewById(com.adityaarora.liveedgedetection.R.id.scanned_image);
startScan();
scan = findViewById(R.id.open_scan);
scan.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent myIntent = new Intent(ScanActivity2.this,
ScanActivity.class);
startActivityForResult(myIntent ,111);
}
});
}
private void startScan() {
Intent intent = new Intent(this, ScanActivity.class);
startActivityForResult(intent, REQUEST_CODE);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == REQUEST_CODE) {
if(resultCode == Activity.RESULT_OK) {
if(null != data && null != data.getExtras()) {
String filePath = data.getExtras().getString(ScanConstants.SCANNED_RESULT);
Bitmap baseBitmap = ScanUtils.decodeBitmapFromFile(filePath, ScanConstants.IMAGE_NAME);
scannedImageView.setScaleType(ImageView.ScaleType.FIT_CENTER);
scannedImageView.setImageBitmap(baseBitmap);
}
} else if(resultCode == Activity.RESULT_CANCELED) {
finish();
}
}
}
Update :
After some research I found that the imported project was on read file only and cannot be changed (ScanActivity.java) and my current project was updated sdk 28 which is different from the one Imported so there is some errors in ScanActivity which Is why the button (technically) wasn't working
You should use startActivityForResult instead of startActivity like below.
scan.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent myIntent = new Intent(MainActivity.this,
ScanActivity.class);
startActivityForResult(myIntent ,111);
}
});
and modify your onActivityResult like
protected void onActivityResult(int requestCode, int resultCode, #Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(resultCode == Activity.RESULT_OK && requestCode == 111){
String filePath = data.getExtras().getString(ScanConstants.SCANNED_RESULT);
Bitmap baseBitmap = ScanUtils.decodeBitmapFromFile(filePath, ScanConstants.IMAGE_NAME);
Log.d("YourTAG","File Path "+filePath);
// here you can set bitmap to your image view
yourImageView.setImageBitmap(baseBitmap);
}
}
UPDATE
You Main Activity should be like
private static final int REQUEST_CODE = 111;
private ImageView scannedImageView;
Button scan;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_scan);
scannedImageView = findViewById(R.id.scanned_image); // this ImageView should be in your activity_scan.xml file with same id(scanned_image)
startScan();
scan = findViewById(R.id.open_scan);
scan.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
startScan();
}
});
}
private void startScan() {
Intent intent = new Intent(ScanActivity2.this, ScanActivity.class);
startActivityForResult(intent, REQUEST_CODE);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == REQUEST_CODE) {
if(resultCode == Activity.RESULT_OK) {
if(null != data && null != data.getExtras()) {
String filePath = data.getExtras().getString(ScanConstants.SCANNED_RESULT);
Bitmap baseBitmap = ScanUtils.decodeBitmapFromFile(filePath, ScanConstants.IMAGE_NAME);
scannedImageView.setScaleType(ImageView.ScaleType.FIT_CENTER);
scannedImageView.setImageBitmap(baseBitmap);
}
} else if(resultCode == Activity.RESULT_CANCELED) {
finish();
}
}
}
Demo project
I have uploaded a demo project on Github which is integrated LiveEdgeDetection library and working as expected.
To check it go here
I wanted to take a photo and save it to gallery. Then read this photo from gallery and convert it to text( using ocr)
But my app keep crashing when I try to save it with this line of code
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, pictureUri);
I debug my app and found this line is the responsible for crash. But without this line I can't save my image. How can I do that ?
package com.example.takepicture;
import ...
public class MainActivity extends AppCompatActivity {
private static final int CAMERA_REQUEST = 1888;
ImageView imageView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button btnCamera = (Button) findViewById(R.id.btnCamera);
imageView = (ImageView) findViewById(R.id.ImageView);
btnCamera.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
File pictureDirectory = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
String pictureName = getPictureName();
File imageFile = new File(pictureDirectory,pictureName);
Uri pictureUri = Uri.fromFile(imageFile);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, pictureUri);
startActivityForResult(cameraIntent, CAMERA_REQUEST);
//capturarFoto();
}
});
}
private String getPictureName() {
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
return "Img" + timeStamp + ".jpg";
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == RESULT_OK) {
if (requestCode == CAMERA_REQUEST) {
}
}
}
}
Fastest solution is adding:
StrictMode.VmPolicy.Builder builder = new StrictMode.VmPolicy.Builder();
StrictMode.setVmPolicy(builder.build());
somewhere before calling:
startActivityForResult(...)
But the correct one (for API >24) is:
creating URI via FileProvider.getUriForFile(...) and
creating provider (and adding it to Manifest file)
You can find more info there: https://stackoverflow.com/a/50265329/5529263
I'm currently writing an Android application that will allow a user to input the result of a scanned barcode into a field outside of the application.
The app will simply be a Floating Button that when pressed, will bring up a camera screen that scans and reads the barcode being pointed at, and save the result as an intent.
The user will primarily be working on Chrome when using this Floating Button.
Question: Is it possible to set the text of the current field in focus, outside of the application, as the result of the scanned barcode?
I'm using the following libraries:
- com.google.zxing:core:3.3.3
- com.journeyapps:zxing-android-embedded:3.5.0#aar
Current code:
public class MainActivity extends AppCompatActivity {
FloatingActionButton fabScan;
TextView textViewScanResult;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final Activity activity = this;
textViewScanResult = findViewById(R.id.textViewScan);
fabScan = findViewById(R.id.floatingActionButton_scan);
fabScan.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
IntentIntegrator integrator = new IntentIntegrator(activity);
integrator.setDesiredBarcodeFormats(IntentIntegrator.ALL_CODE_TYPES);
integrator.setPrompt("Scan Barcode");
integrator.setCameraId(0);
integrator.setBeepEnabled(true);
integrator.setBarcodeImageEnabled(false);
integrator.setOrientationLocked(false);
integrator.initiateScan();
}
});
}
#Override
protected void onActivityResult(int requestCode, int resultCode, #Nullable Intent data) {
IntentResult result = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
if (result != null) {
if (result.getContents() == null) {
Toast.makeText(getApplicationContext(), "nothing", Toast.LENGTH_SHORT).show();
} else {
textViewScanResult.setText(result.getContents());
}
} else {
super.onActivityResult(requestCode, resultCode, data);
}
}
Currently, i'm only setting a textView as the scanned result.
try setting browser intent with the result content.
#Override
protected void onActivityResult(int requestCode, int resultCode, #Nullable Intent data) {
IntentResult result = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
if (result != null) {
if (result.getContents() == null) {
Toast.makeText(getApplicationContext(), "nothing", Toast.LENGTH_SHORT).show();
} else {
textViewScanResult.setText();
//here
Intent intent = new Intent(Intent.ACTION_VIEW,
Uri.parse("http://www.stackoverflow.com")); //change url to google
intent.putExtra(result.getContents().toString());
startActivity(intent);
}
} else {
super.onActivityResult(requestCode, resultCode, data);
}
}
I have created an activity that upon button click user are able to upload a picture from their device gallery, which would get cast to an imageview. The problem is that it is only able to retrieve image from device gallery, not from phone camera gallery, or from phone google drive folder. I would want that its able to upload any picture from their phone, regardless of the source.
Below is the code:
Button buttonLoadImage = (Button) findViewById(R.id.btnPictureSelect);
buttonLoadImage.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
Intent i = new Intent(
Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(i, RESULT_LOAD_IMAGE);
}
});
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK
&& null != data) {
Uri selectedImage = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(selectedImage,
filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
cursor.close();
ImageView imageView = (ImageView) findViewById(R.id.profilePicturePreview);
imageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));
}
}
private byte[] readInFile(String path) throws IOException {
// TODO Auto-generated method stub
byte[] data = null;
File file = new File(path);
InputStream input_stream = new BufferedInputStream(new FileInputStream(
file));
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
data = new byte[16384]; // 16K
int bytes_read;
while ((bytes_read = input_stream.read(data, 0, data.length)) != -1) {
buffer.write(data, 0, bytes_read);
}
input_stream.close();
return buffer.toByteArray();
}
Any help would be greatly appreciated.
Update:
private static final int READ_REQUEST_CODE = 42;
in the code
Button buttonLoadImage = (Button) findViewById(R.id.btnPictureSelect);
buttonLoadImage.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
Intent imageIntent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
imageIntent.addCategory(Intent.CATEGORY_OPENABLE);
imageIntent.setType("image/*");
imageIntent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(imageIntent , READ_REQUEST_CODE);
}
});
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == READ_REQUEST_CODE && resultCode == Activity.RESULT_OK) {
Uri uri = null;
if (data != null) {
uri = data.getData();
Log.i(TAG, "Uri: " + uri.toString());
showImage(uri);
}
}
}
private void showImage(Uri uri) {
// TODO Auto-generated method stub
ImageView imageView = (ImageView) findViewById(R.id.profilePicturePreview);
imageView.setImageUri(Uri.parse(new File("path_to_your_image".toString()));
}
error:
The method parse(String) in the type Uri is not applicable for the arguments (File)
in line
imageView.setImageUri(Uri.parse(new File("path_to_your_image".toString()));
Update 2:
private void showImage(Uri uri) {
// TODO Auto-generated method stub
ImageView imageView = (ImageView) findViewById(R.id.profilePicturePreview);
imageView.setImageUri(Uri.fromFile(new File("/sdcard/myimage.jpg")));
error:
The method setImageUri(Uri) is undefined for the type ImageView
It would be better to use Intent to search the image type files available in your device.
Intent imageIntent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
imageIntent.addCategory(Intent.CATEGORY_OPENABLE);
imageIntent.setType("image/*");
imageIntent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(imageIntent , READ_REQUEST_CODE); // set READ_REQUEST_CODE to 42 in your class
Now, process your results in the onActivityResult() method.
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == READ_REQUEST_CODE && resultCode == Activity.RESULT_OK) {
Uri uri = null;
if (data != null) {
uri = data.getData();
Log.i(TAG, "Uri: " + uri.toString());
showImage(uri);
}
}
I am new to Android, i want to use the data from QR code to set my textview.
and i want to test the data's result as well.
the QR code format is just plain Text.
the problem is after I scanned my text wasn't change.
please help me check the code
btnSendJob.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent("com.google.zxing.client.android.SCAN");
intent.setPackage("com.google.zxing.client.android");
intent.putExtra("SCAN_MODE", "QR_CODE_MODE");
startActivityForResult(intent, 0);
}
//result from Zxing
#SuppressWarnings("unused")
public void onActivityResult(int requestCode, int resultCode, Intent intent) {
if (requestCode == 0) {
if (resultCode == RESULT_OK) {
String contents = intent.getStringExtra("SCAN_RESULT");
String format = intent.getStringExtra("SCAN_RESULT_FORMAT");
// Handle successful scan
TextView text1 = (TextView) findViewById(R.id.resultQR);
TextView text2 = (TextView) findViewById(R.id.textToSelectGroup);
text1.setText(contents.toString());
} else if (resultCode == RESULT_CANCELED) {
// Handle cancel
btnSendJob.setText("failed");
}
}
}
});
I think something like this works:
import zxing.IntentIntegrator;
public void onActivityResult(int requestCode, int resultCode, Intent intent) {
IntentResult result = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
if (result != null) {
String barcode = result.getContents();
//yadda, yadda..
}
}