android-camera

问题 I am using a onClick over a button to capture an image. PictureCallback myPictureCallback_JPG = new PictureCallback() { @Override public void onPictureTaken(byte[] arg0, Camera arg1) { FileOutputStream outStream = null; try { // Write to SD Card outStream = new FileOutputStream(String.format("/sdcard/%d.jpg", System.currentTimeMillis())); outStream.write(arg0); outStream.close(); Toast.makeText(Photo.this, "Image Saved to SD Card", Toast.LENGTH_SHORT).show(); System.out.println(); } catch

问题 I am invoking a camera using an intent and clicking a picture. Presently I am on emulator and would like to force camera to click the pictures in portrait mode(need to capture a video of app working,so orientation change would look bad) but the camera screen appears landscape and all the further activities which I invoke in onActivityResult(). After clicking the picture the Activity layout comes out in landscape mode like this: while all my previous activity have displayed correctly in

问题 Photo is rotating 90 degree while capturing from camera in samsung mobile rest of other mobiles(HTC) its working fine. Please help me for this. Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE); startActivityForResult(cameraIntent, IMAGE_CAPTURE); @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); try { if (requestCode == IMAGE_CAPTURE) { if (resultCode == RESULT_OK){

问题 I saw the following link for the above query but both the answers does not met the expectation. [How to programmatically take a screenshot in Android? Expectation: Capture camera preview with overlay. 回答1: I provided solution to a folk, please check this answer. He had trouble to get the result but copied code below is what I'm using in production since a year ago. please try it. The code captures image in SurfaceView which is given from Camera . You can overlay some views on it. They will be

问题 I'm trying to save an image file to external storage. I can save the picture to the sdcard but it doesn't show up in Androids gallery application. I've tried this approach: File path = Environment.getExternalStorageDirectory(); File f = new File(path + "/mydirectory/" + imageName + "_" + System.currentTimeMillis() + ".jpg"); FileOutputStream fos = new FileOutputStream(f); f.mkdirs(); b.compress(CompressFormat.JPEG, 100, fos); fos.close(); Uri contentUri = Uri.fromFile(f); Intent

问题 Android opencv samples and tutorials were running fine and suddenly one day I get this for all of those: "It seems that your device does not support camera (or it is locked). The application will be closed" Please help, how to I can fix it? I have reinstalled opencv and imported again and made new emulators but the problem still persists. 回答1: Go to your device settings -> apps -> YOUR APP -> Permissions -> turn on camera permission.. Worked for me.. 回答2: Check the camera permission in

问题 How can i capture slow motion video in my app? I tried using mMediaRecorder.setVideoFrameRate(100); but app crashes if i set the value 20 or more with IllegalStateException . I have researched a lot.Normal video is between 24 and 30 fps.To see slow motion video we need to capture 100-120 fps but device does not allow that.But I see the default camera in my device has an option of Slow motion.Also few apps in play store allow to create slow motion videos.I also tried setting higher

问题 I have extended a SurfaceView for displaying the camera feed for a very simple camera application. To find the optimal preview size for each device, I used this sample code which is used in almost all the open source camera apps I have seen: List<Camera.Size> sizes = parameters.getSupportedPreviewSizes(); double minDiff = Double.MAX_VALUE; for (Camera.Size size : sizes) { if (Math.abs(size.width - width) < minDiff) { screenWidth = size.width; screenHeight = size.height; minDiff = Math.abs

问题 I want to capture image and save it in Image view in one of My Application. I already have an idea how to implement it and also Works fine in all device Except Samsung Galaxy S3. What I Want: Avoid the Force Closing Issue Coming in Samsung Galaxy S3 and probably for all other Device which i have not yet tested. What I have Done: I have Done the Below Code to achieve my goal. BuildInukshk_4 Activity : package com.inukshk.CreateInukshk; import java.util.Calendar; import android.app.Activity;

问题 I am using camera in my app. I am just using intent to start camera Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE); cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri); startActivityForResult(cameraIntent, 101); The captured image automatically comes in landscape view . How do i make camera to capture images in portrait view 回答1: If device has v2.2 or above you can rotate camera orientation to portrait using camera.setDisplayOrientation(90) . In