I am trying to take a screenshot of my Augmented Reality Screen and pass it as a bitmap to another activity.
This is the code that I am using to take the screenshot:
Function to take screen shot
public static void tmpScreenshot(Bitmap bmp, Context context){
try {
//Write file
String filename = "bitmap.png";
FileOutputStream stream = context.openFileOutput(filename, Context.MODE_PRIVATE);
bmp.compress(Bitmap.CompressFormat.PNG, 100, stream);
//Cleanup
stream.close();
bmp.recycle();
//Pop intent
Intent in1 = new Intent(context, CostActivity.class);
in1.putExtra("image", filename);
context.startActivity(in1);
} catch (Exception e) {
e.printStackTrace();
}
}
Function to receive screenshot
private void loadTmpBitmap() {
Bitmap bmp = null;
String filename = getIntent().getStringExtra("image");
try {
FileInputStream is = this.openFileInput(filename);
bmp = BitmapFactory.decodeStream(is);
ImageView imageView = findViewById(R.id.test);
imageView.setImageBitmap(Bitmap.createScaledBitmap(bmp, 120, 120, false));
is.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
Even though the Screenshot was taken, it was black when it is passed to another activity.
In addition, the Screenshot only appeared after I pressed the back button
Can anyone help me with the code to take a screenshot with ARCore? Or what am I doing wrong?
It is not possible to take a screenshot of a SurfaceView using your method. If you do then the screenshot will be black, as it only works for regular views.
What you need to use is pixelcopy.
private void takePhoto() {
ArSceneView view = arFragment.getArSceneView();
// Create a bitmap the size of the scene view.
final Bitmap bitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(),
Bitmap.Config.ARGB_8888);
// Create a handler thread to offload the processing of the image.
final HandlerThread handlerThread = new HandlerThread("PixelCopier");
handlerThread.start();
// Make the request to copy.
PixelCopy.request(view, bitmap, (copyResult) -> {
if (copyResult == PixelCopy.SUCCESS) {
try {
saveBitmapToDisk(bitmap);
} catch (IOException e) {
Toast toast = Toast.makeText(VisualizerActivity.this, e.toString(),
Toast.LENGTH_LONG);
toast.show();
return;
}
SnackbarUtility.showSnackbarTypeLong(settingsButton, "Screenshot saved in /Pictures/Screenshots");
} else {
SnackbarUtility.showSnackbarTypeLong(settingsButton, "Failed to take screenshot");
}
handlerThread.quitSafely();
}, new Handler(handlerThread.getLooper()));
}
public void saveBitmapToDisk(Bitmap bitmap) throws IOException {
// String path = Environment.getExternalStorageDirectory().toString() + "/Pictures/Screenshots/";
if (videoDirectory == null) {
videoDirectory =
new File(
Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES)
+ "/Screenshots");
}
Calendar c = Calendar.getInstance();
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH.mm.ss");
String formattedDate = df.format(c.getTime());
File mediaFile = new File(videoDirectory, "FieldVisualizer"+formattedDate+".jpeg");
FileOutputStream fileOutputStream = new FileOutputStream(mediaFile);
bitmap.compress(Bitmap.CompressFormat.JPEG, 70, fileOutputStream);
fileOutputStream.flush();
fileOutputStream.close();
}
Related
There is a function that records the image on the SD card
String folderToSave = Environment.getExternalStorageDirectory().toString();
private String SavePicture(ImageView iv, String folderToSave)
{
OutputStream fOut = null;
try {
File file = new File(folderToSave, mainText.getText()+".jpg");
fOut = new FileOutputStream(file);
Bitmap bitmap = ((BitmapDrawable) iv.getDrawable()).getBitmap();
bitmap.compress(Bitmap.CompressFormat.JPEG, 85, fOut);
fOut.flush();
fOut.close();
MediaStore.Images.Media.insertImage(getContentResolver(), file.getAbsolutePath(), file.getName(), file.getName());
}
catch (Exception e)
{
return e.getMessage();
}
return "";
}
The function code is taken from Habr
I'm trying to set an ImageView via setImageDrawable but I'm getting an error
mainText.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Drawable d = Drawable.createFromPath(folderToSave+mainText.getText()+".jpg");
ImageView.setImageDrawable(d);
}
});
Error
non-static method setImageDrawable(Drawable) cannot be referenced from a static context ImageView.setImageDrawable(Drawable.createFromPath(folderToSave+mainText.getText()+".jpg"));
Is there any other way to set the picture saved on the phone?
this is my code I and I want to save this bitmap on my internal storage. The public boolean saveImageToInternalStorage is a code from google but I don't know how to use it. when I touch button2 follow the button1 action.
public class MainActivity extends Activity implements OnClickListener {
Button btn, btn1;
SurfaceView sv;
Bitmap bitmap;
Canvas canvas;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn=(Button)findViewById(R.id.button1);
btn1=(Button)findViewById(R.id.button2);
sv=(SurfaceView)findViewById(R.id.surfaceView1);
btn.setOnClickListener(this);
btn1.setOnClickListener(this);
bitmap=BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher);
}
#Override
public void onClick(View v) {
canvas=sv.getHolder().lockCanvas();
if(canvas==null) return;
canvas.drawBitmap(bitmap, 100, 100, null);
sv.getHolder().unlockCanvasAndPost(canvas);
}
public boolean saveImageToInternalStorage(Bitmap image) {
try {
// Use the compress method on the Bitmap object to write image to
// the OutputStream
FileOutputStream fos = openFileOutput("desiredFilename.png", Context.MODE_PRIVATE);
// Writing the bitmap to the output stream
image.compress(Bitmap.CompressFormat.PNG, 100, fos);
fos.close();
return true;
} catch (Exception e) {
Log.e("saveToInternalStorage()", e.getMessage());
return false;
}
}
}
To Save your bitmap in sdcard use the following code
Store Image
private void storeImage(Bitmap image) {
File pictureFile = getOutputMediaFile();
if (pictureFile == null) {
Log.d(TAG,
"Error creating media file, check storage permissions: ");// e.getMessage());
return;
}
try {
FileOutputStream fos = new FileOutputStream(pictureFile);
image.compress(Bitmap.CompressFormat.PNG, 90, fos);
fos.close();
} catch (FileNotFoundException e) {
Log.d(TAG, "File not found: " + e.getMessage());
} catch (IOException e) {
Log.d(TAG, "Error accessing file: " + e.getMessage());
}
}
To Get the Path for Image Storage
/** Create a File for saving an image or video */
private File getOutputMediaFile(){
// To be safe, you should check that the SDCard is mounted
// using Environment.getExternalStorageState() before doing this.
File mediaStorageDir = new File(Environment.getExternalStorageDirectory()
+ "/Android/data/"
+ getApplicationContext().getPackageName()
+ "/Files");
// This location works best if you want the created images to be shared
// between applications and persist after your app has been uninstalled.
// Create the storage directory if it does not exist
if (! mediaStorageDir.exists()){
if (! mediaStorageDir.mkdirs()){
return null;
}
}
// Create a media file name
String timeStamp = new SimpleDateFormat("ddMMyyyy_HHmm").format(new Date());
File mediaFile;
String mImageName="MI_"+ timeStamp +".jpg";
mediaFile = new File(mediaStorageDir.getPath() + File.separator + mImageName);
return mediaFile;
}
EDIT
From Your comments i have edited the onclick view in this the button1 and button2 functions will be executed separately.
public onClick(View v){
switch(v.getId()){
case R.id.button1:
//Your button 1 function
break;
case R.id. button2:
//Your button 2 function
break;
}
}
private static void SaveImage(Bitmap finalBitmap) {
String root = Environment.getExternalStorageDirectory().getAbsolutePath();
File myDir = new File(root + "/saved_images");
myDir.mkdirs();
String fname = "Image-"+ o +".jpg";
File file = new File (myDir, fname);
if (file.exists ()) file.delete ();
try {
FileOutputStream out = new FileOutputStream(file);
finalBitmap.compress(Bitmap.CompressFormat.JPEG, 90, out);
out.flush();
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}
Modify onClick() as follows:
#Override
public void onClick(View v) {
if(v == btn) {
canvas=sv.getHolder().lockCanvas();
if(canvas!=null) {
canvas.drawBitmap(bitmap, 100, 100, null);
sv.getHolder().unlockCanvasAndPost(canvas);
}
} else if(v == btn1) {
saveBitmapToInternalStorage(bitmap);
}
}
There are several ways to enforce that btn must be pressed before btn1 so that the bitmap is painted before you attempt to save it.
I suggest that you initially disable btn1, and that you enable it when btn is clicked, like this:
if(v == btn) {
...
btn1.setEnabled(true);
}
To save file into directory
public static Uri saveImageToInternalStorage(Context mContext, Bitmap bitmap){
String mTimeStamp = new SimpleDateFormat("ddMMyyyy_HHmm").format(new Date());
String mImageName = "snap_"+mTimeStamp+".jpg";
ContextWrapper wrapper = new ContextWrapper(mContext);
File file = wrapper.getDir("Images",MODE_PRIVATE);
file = new File(file, "snap_"+ mImageName+".jpg");
try{
OutputStream stream = null;
stream = new FileOutputStream(file);
bitmap.compress(Bitmap.CompressFormat.JPEG,100,stream);
stream.flush();
stream.close();
}catch (IOException e)
{
e.printStackTrace();
}
Uri mImageUri = Uri.parse(file.getAbsolutePath());
return mImageUri;
}
required permission
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
You might be able to use the following for decoding, compressing and saving an image:
#Override
public void onClick(View view) {
onItemSelected1();
InputStream image_stream = null;
try {
image_stream = getContentResolver().openInputStream(myUri);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
Bitmap image= BitmapFactory.decodeStream(image_stream );
// path to sd card
File path=Environment.getExternalStorageDirectory();
//create a file
File dir=new File(path+"/ComDec/");
dir.mkdirs();
Date date=new Date();
File file=new File(dir,date+".jpg");
OutputStream out=null;
try{
out=new FileOutputStream(file);
image.compress(format,size,out);
out.flush();
out.close();
MediaStore.Images.Media.insertImage(getContentResolver(), image," yourTitle "," yourDescription");
image=null;
}
catch (IOException e)
{
e.printStackTrace();
}
Toast.makeText(SecondActivity.this,"Image Save Successfully",Toast.LENGTH_LONG).show();
}
});
This question already has answers here:
How to use "Share image using" sharing Intent to share images in android?
(17 answers)
Closed 2 years ago.
I am making QR code generator
So far I made a generator button and save button.
It works fine.
I am trying to work on the sharing button.
It takes a few days to figure out as a beginner and still I cannot make it work.
At this code, if I click share, then the app closes.
/**Barcode share*/
findViewById(R.id.share_barcode).setOnClickListener(v -> {
Bitmap b = BitmapFactory.decodeResource(getResources(),R.id.qr_image);
Intent share = new Intent(Intent.ACTION_SEND);
share.setType("image/jpeg");
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
b.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
String path = MediaStore.Images.Media.insertImage(getContentResolver(), b, "Title", null);
Uri imageUri = Uri.parse(path);
share.putExtra(Intent.EXTRA_STREAM, imageUri);
startActivity(Intent.createChooser(share, "Select"));
});
I guessed the problem was path.
I use savepath to save qr code image. And then maybe it conflicts with String path
So I tried String savePath = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM) + "/Camera/";;
It's not working. So maybe it's different problem and I don't know how to fix it.
Could you show me how to fix?
MainActivity
public class MainActivity extends AppCompatActivity {
private String inputValue;
private String savePath = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM) + "/Camera/";
private Bitmap bitmap;
private QRGEncoder qrgEncoder;
private ImageView qrImage;
private EditText edtValue;
private AppCompatActivity activity;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
qrImage = findViewById(R.id.qr_image);
edtValue = findViewById(R.id.edt_value);
activity = this;
/**Barcode Generator*/
findViewById(R.id.generate_barcode).setOnClickListener(view -> {
inputValue = edtValue.getText().toString().trim();
if (inputValue.length() > 0) {
WindowManager manager = (WindowManager) getSystemService(WINDOW_SERVICE);
Display display = manager.getDefaultDisplay();
Point point = new Point();
display.getSize(point);
int width = point.x;
int height = point.y;
int smallerDimension = width < height ? width : height;
smallerDimension = smallerDimension * 3 / 4;
qrgEncoder = new QRGEncoder(
inputValue, null,
QRGContents.Type.TEXT,
smallerDimension);
qrgEncoder.setColorBlack(Color.BLACK);
qrgEncoder.setColorWhite(Color.WHITE);
try {
bitmap = qrgEncoder.getBitmap();
qrImage.setImageBitmap(bitmap);
} catch (Exception e) {
e.printStackTrace();
}
} else {
edtValue.setError(getResources().getString(R.string.value_required));
}
});
/**Barcode save*/
findViewById(R.id.save_barcode).setOnClickListener(v -> {
String filename = edtValue.getText().toString().trim();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
try {
ContentResolver resolver = getContentResolver();
ContentValues contentValues = new ContentValues();
contentValues.put(MediaStore.MediaColumns.DISPLAY_NAME, filename + ".jpg");
contentValues.put(MediaStore.MediaColumns.MIME_TYPE, "image/jpg");
contentValues.put(MediaStore.MediaColumns.RELATIVE_PATH, Environment.DIRECTORY_DCIM);
Uri imageUri = resolver.insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, contentValues);
OutputStream fos = resolver.openOutputStream(Objects.requireNonNull(imageUri));
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fos);
Objects.requireNonNull(fos).close();
Toast toast= Toast.makeText(getApplicationContext(),
"Image Saved. Check your gallery.", Toast.LENGTH_SHORT);
toast.setGravity(Gravity.TOP|Gravity.CENTER_HORIZONTAL, 0, 0);
toast.show();
edtValue.setText(null);
} catch (IOException e) {
e.printStackTrace();
}
} else {
if (ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
try {
boolean save = new QRGSaver().save(savePath, filename, bitmap, QRGContents.ImageType.IMAGE_JPEG);
String result = save ? "Image Saved. Check your gallery." : "Image Not Saved";
Toast.makeText(activity, result, Toast.LENGTH_LONG).show();
edtValue.setText(null);
} catch (Exception e) {
e.printStackTrace();
}
} else {
ActivityCompat.requestPermissions(activity, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 0);
}
}
});
/**Barcode share*/
findViewById(R.id.share_barcode).setOnClickListener(v -> {
Bitmap b = BitmapFactory.decodeResource(getResources(),R.id.qr_image);
Intent share = new Intent(Intent.ACTION_SEND);
share.setType("image/jpeg");
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
b.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
String path = MediaStore.Images.Media.insertImage(getContentResolver(), b, "Title", null);
Uri imageUri = Uri.parse(path);
share.putExtra(Intent.EXTRA_STREAM, imageUri);
startActivity(Intent.createChooser(share, "Select"));
});
}
}
I think you can solve this by:
Saving the bitmap in a file.
Then sharing the URI of that file in the intent.
In the code below, I am saving the image at the app level directory, you can choose your own and the code is written in kotlin.
Note: If you are using an app-level directory for saving the image then you must use the file provide to get the URI else it may result in FileUriExposedException
try {
val file = File(getExternalFilesDir(null),System.currentTimeMillis().toString() + ".png")
file.createNewFile()
val b = imageView.drawable.toBitmap()
FileOutputStream(file).use { out ->
b.compress(Bitmap.CompressFormat.PNG, 100, out)
}
val share = Intent(Intent.ACTION_SEND)
share.type = "image/jpeg"
val photoURI = FileProvider.getUriForFile(this, applicationContext.packageName.toString() + ".provider", file)
share.putExtra(Intent.EXTRA_STREAM, photoURI)
startActivity(Intent.createChooser(share, "Share Image"))
Toast.makeText(this, "Completed!!", Toast.LENGTH_SHORT).show()
} catch (e: IOException) {
e.printStackTrace()
Toast.makeText(this, e.message, Toast.LENGTH_SHORT).show()
}
In JAVA:
public void shareImage(Activity activity, ImageView imageView) {
try {
File file = new File(activity.getExternalFilesDir(null), System.currentTimeMillis() + ".png");
file.createNewFile();
Bitmap bitmap = drawableToBitmap(imageView.getDrawable());
FileOutputStream fOut = new FileOutputStream(file);
bitmap.compress(Bitmap.CompressFormat.PNG, 85, fOut);
fOut.flush();
fOut.close();
Intent share = new Intent("android.intent.action.SEND");
share.setType("image/jpeg");
Uri photoURI = FileProvider.getUriForFile(activity,activity.getPackageName(), file);
share.putExtra("android.intent.extra.STREAM", photoURI);
activity.startActivity(Intent.createChooser(share, "Share Image"));
} catch (Exception var14) {
}
}
public static Bitmap drawableToBitmap (Drawable drawable) {
Bitmap bitmap;
if (drawable instanceof BitmapDrawable) {
BitmapDrawable bitmapDrawable = (BitmapDrawable) drawable;
if(bitmapDrawable.getBitmap() != null) {
return bitmapDrawable.getBitmap();
}
}
if(drawable.getIntrinsicWidth() <= 0 || drawable.getIntrinsicHeight() <= 0) {
bitmap = Bitmap.createBitmap(1, 1, Bitmap.Config.ARGB_8888); // Single color bitmap will be created of 1x1 pixel
} else {
bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
}
Canvas canvas = new Canvas(bitmap);
drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
drawable.draw(canvas);
return bitmap;
}
I am trying to take a screenshot using Floating Widget. But I can't find any way of doing so. I searched for MediaProjection API but couldn't find anything helpful. Right now, If I tap the floating widget, it only captures the screenshot of the floating widget.
captureButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//Screenshot.java is my class for taking the screenshot
Bitmap bitmap = Screenshot.takescreenshotOfView(v);
OutputStream fOut = null;
Uri outputFileUri;
try {
File root = new File(Environment.getExternalStorageDirectory()
+ File.separator + "DUOProfile" + File.separator);
root.mkdirs();
File sdImageMainDirectory = new File(root, "profilepic"+".jpg");
Toast.makeText(getApplicationContext(), "Picture saved in DUOProfile folder",Toast.LENGTH_SHORT).show();
outputFileUri = Uri.fromFile(sdImageMainDirectory);
fOut = new FileOutputStream(sdImageMainDirectory);
} catch (Exception e) {
Toast.makeText(getApplicationContext(), "Error occured. Please try again later.",Toast.LENGTH_SHORT).show();
}
try {
bitmap.compress(Bitmap.CompressFormat.PNG, 100, fOut);
fOut.flush();
fOut.close();
} catch (Exception e) {
}
}
});
Screenshot.java
package com;
import android.graphics.Bitmap;
import android.view.View;
public class Screenshot {
public static Bitmap takescreenshot(View view) {
view.setDrawingCacheEnabled(true);
view.buildDrawingCache();
Bitmap bitmap = Bitmap.createBitmap(view.getDrawingCache());
view.setDrawingCacheEnabled(false);
return bitmap;
}
public static Bitmap takescreenshotOfView(View view) {
return takescreenshot(view.getRootView());
}
}
Pass the view in takescreenshotOfView method
Bitmap bitmap = takescreenshotOfView(view);
This will return bitmap image, just saved in your internal/sd card
public Bitmap takescreenshotOfView(View view) {
Bitmap bitmap = Bitmap.createBitmap(view.getWidth(),
view.getHeight(), Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
view.draw(canvas);
return bitmap;
}
I have an app that receives qr code from the server. I want to decode it (not with intent and camera) and display the text it contains in my app. I have alredy done this in Java SE with jars from zxing with this code:
private class QRCodeDecoder {
public String decode(File imageFile) {
BufferedImage image;
try {
image = ImageIO.read(imageFile);
} catch (IOException e1) {
return "io outch";
}
// creating luminance source
LuminanceSource lumSource = new BufferedImageLuminanceSource(image);
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(lumSource));
// barcode decoding
QRCodeReader reader = new QRCodeReader();
Result result = null;
try {
result = reader.decode(bitmap);
} catch (ReaderException e) {
return "reader error";
}
return result.getText();
}
}
But on Android, BufferedImage is not found.
Has anyone decoded qr code on android from image stored on the phone?
Tnx.
In android,you can do it this way:
#Override
protected Result doInBackground(Void... params)
{
try
{
InputStream inputStream = activity.getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(inputStream);
if (bitmap == null)
{
Log.e(TAG, "uri is not a bitmap," + uri.toString());
return null;
}
int width = bitmap.getWidth(), height = bitmap.getHeight();
int[] pixels = new int[width * height];
bitmap.getPixels(pixels, 0, width, 0, 0, width, height);
bitmap.recycle();
bitmap = null;
RGBLuminanceSource source = new RGBLuminanceSource(width, height, pixels);
BinaryBitmap bBitmap = new BinaryBitmap(new HybridBinarizer(source));
MultiFormatReader reader = new MultiFormatReader();
try
{
Result result = reader.decode(bBitmap);
return result;
}
catch (NotFoundException e)
{
Log.e(TAG, "decode exception", e);
return null;
}
}
catch (FileNotFoundException e)
{
Log.e(TAG, "can not open file" + uri.toString(), e);
return null;
}
}
Download ZXing from google code, and this class file: ZXing-1.6/zxing-1.6/androidtest/src/com/google/zxing/client/androidtest/RGBLuminanceSource.java can help you.
Quickmark and qr droid actually reads out what the code says, and you can decode barcodes saved on your phone. Hit the menu button when your load the image and select share, find decode qr droid or decode quickmark, and the'll do the magic. I prefer quickmark for reading codes, because it tells me what is typed in the code.