如何打开“前置摄像头”在Android平台？ [英] How to open "front camera" on android platform?

问题描述

更一般地说，如果一个设备有多个嵌入式摄像机，
有什么办法来初始化其中的一个？

More generally, If a device has more than one embedded camera, is there any way to initialize one of them in particular?

t在android中引用docs：

I didn't find it in android reference docs:

https://developer.android.com/reference/android/hardware/Camera.html
https://developer.android.com/reference/android/hardware/camera2/package-summary.html
< a href =https://developer.android.com/reference/android/hardware/camera2/CameraManager.html =nofollow noreferrer> https://developer.android.com/reference/android/hardware/camera2 /CameraManager.html

三星SHW-M100S有2个相机。
如果没有参考使用2个凸轮，任何想法如何三星做..？

Samsung SHW-M100S have 2 cameras. If there is no reference to use 2 cams, Any idea how samsung did..?

推荐答案

private Camera openFrontFacingCameraGingerbread() {
    int cameraCount = 0;
    Camera cam = null;
    Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
    cameraCount = Camera.getNumberOfCameras();
    for (int camIdx = 0; camIdx < cameraCount; camIdx++) {
        Camera.getCameraInfo(camIdx, cameraInfo);
        if (cameraInfo.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
            try {
                cam = Camera.open(camIdx);
            } catch (RuntimeException e) {
                Log.e(TAG, "Camera failed to open: " + e.getLocalizedMessage());
            }
        }
    }

    return cam;
}

在 AndroidManifest.xml file：

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

<版本。

Note: This feature is available in Gingerbread(2.3) and Up Android Version.

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