Check if device has a camera?

user_185329 0
Viewed 55620

In my app, I'd like to use the camera, if the device has one. Are there any devices running android that do not have a camera? By including the following into my manifest:

<uses-feature android:name="android.hardware.camera" android:required="false"/>

then it's basically saying "I'll use a camera if one exists, but don't need one to run the app".

How could I check if a camera exists on the device, before attempting to use the Camera class?

android-camera android
15 Answers

As per Android documentation :

/** Check if this device has a camera */
private boolean checkCameraHardware(Context context) {
    if (context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA)){
        // this device has a camera
        return true;
    } else {
        // no camera on this device
        return false;
    }
}

Refer more about the camera API :
https://developer.android.com/guide/topics/media/camera.html#detect-camera

user_53809420

it is better to check ANY camera on the device since it could be external camera as well

packageManager.hasSystemFeature(FEATURE_CAMERA_ANY)

Documentation:

Feature for getSystemAvailableFeatures and hasSystemFeature: The device has at least one camera pointing in some direction, or can support an external camera being connected to it.

user_19549600

As per the documentation, you have to use Package Manager to check if Camera is available on the device or not

In Java:

final boolean isCameraAvailable = getPackageManager().hasSystemFeature(FEATURE_CAMERA);

In Kotlin:

val isCameraAvailable = packageManager.hasSystemFeature(FEATURE_CAMERA)
user_44024620

I found in android tv boxes where you can plug and play usb camera a number of times. At some point of time, The camera service starts saying that it detected one camera in the system while no camera is connected to the system. This happens when you plug in/out the camera a number of times. To fix that, I found this solution working:

//under oncreate:
//cameraManager = ((CameraManager) getSystemService(Context.CAMERA_SERVICE)); 

public int getNumberOfCameras() {
        int count_ = 0;
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            try {
                count_ = cameraManager.getCameraIdList().length;

                if(count_==1)
                {
                    try {
                        cameraManager.getCameraCharacteristics(cameraManager.getCameraIdList()[0]);
                    }catch (Exception e)
                    {
                        count_ = 0;
                    }
                }

            } catch (Exception e) {
               //e.printStackTrace();
            }
        }
        else {
            count_ = Camera.getNumberOfCameras();
        }

        return count_;
    }
user_10099700

One line solution:

public static boolean hasCamera(Context context) {
    return context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA);
}

Put this method in your Utils.java project class.

user_40668860

I've not tried it, but:

private android.hardware.Camera mCameraDevice;

try {
  mCameraDevice = android.hardware.Camera.open();
} catch (RuntimeException e) {
  Log.e(TAG, "fail to connect Camera", e);
  // Throw exception
}

May be what you need.

user_1973850
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