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Answer : I had the same issue and find this doc from google: https://developer.android.com/reference/android/provider/MediaStore.html#ACTION_IMAGE_CAPTURE "Note: if you app targets M and above and declares as using the CAMERA permission which is not granted, then atempting to use this action will result in a SecurityException." This is really weird. Don't make sense at all. The app declares Camera permission using intent with action IMAGE_CAPTURE just run into SecurityException. But if your app doesn't declare Camera permission using intent with action IMAGE_CAPTURE can launch Camera app without issue. The workaround would be check is the app has camera permission included in the manifest, if it's , request camera permission before launching intent. Here is the way to check if the permission is included in the manifest, doesn't matter the permission is granted or not. public boolean hasPermissionInManifest(Context context, String permissionName)...

Answer : I wrestled with this problem a bit today, too. First, make sure that your permissions are set up correctly. Specifically, to record video, you'll want: <uses-feature android:name="android.hardware.camera.front" /> <uses-feature android:name="android.hardware.microphone"/> <uses-permission android:name="android.permission.CAMERA" /> <uses-permission android:name="android.permission.RECORD_AUDIO" /> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> Second, and this is the tricky part, this line from the tutorial does not work with the front-facing camera! mMediaRecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH)); That signature for CamcorderProfile.get() defaults to a profile for the back-facing camera: Returns the camcorder profile for the first back-facing camera on the device at the given quality level. If the device has n...

Answer : Under Tools > AVD Manager , select the "pencil" to get to "Virtual Device Configuration". Show Advanced Settings > Camera will give you the option of using emulated, or a device: Device - use host computer webcam or built-in camera If all you need is to get a still image into the camera, starting with Android Studio 3.2 you can put your static images into the virtual scene: as discussed in this entry from Android developers blog. Note that you'll need to move the camera position into the dining room to see your images (turn around and use Alt-w to move forward). Finally! Append to file ~/Android/Sdk/emulator/resources/Toren1BD.posters poster custom size 2 2 position 0 0 -1.8 rotation 0 0 0 default custom.png Place 'custom.png' in ~/Android/Sdk/emulator/resources/ Restart! emulator @Phone -no-snapshot -no-boot-anim (replace 'Phone' with the name of your avd! (see: emulator -list-avds) Profit! Now you have a...

Answer : I'm using this method -> based on API Demos to get my Preview Size: private Camera.Size getOptimalPreviewSize(List<Camera.Size> sizes, int w, int h) { final double ASPECT_TOLERANCE = 0.1; double targetRatio=(double)h / w; if (sizes == null) return null; Camera.Size optimalSize = null; double minDiff = Double.MAX_VALUE; int targetHeight = h; for (Camera.Size size : sizes) { double ratio = (double) size.width / size.height; if (Math.abs(ratio - targetRatio) > ASPECT_TOLERANCE) continue; if (Math.abs(size.height - targetHeight) < minDiff) { optimalSize = size; minDiff = Math.abs(size.height - targetHeight); } } if (optimalSize == null) { minDiff = Double.MAX_VALUE; for (Camera.Size size : sizes) { if (Math.abs(size.height - targetHeight) < minDiff) { ...