在我的应用中,我想使用相机选项,所以我使用下面的代码来捕捉视频。
public class CameraDemoActivity extends Activity
{
private static final int CAPTURE_VIDEO_ACTIVITY_REQUEST_CODE = 200;
private Uri fileUri;
public static final int MEDIA_TYPE_VIDEO = 2;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Context context = this;
PackageManager packageManager = context.getPackageManager();
// if device support camera?
if (packageManager.hasSystemFeature(PackageManager.FEATURE_CAMERA)) {
//yes
Log.i("camera", "This device has camera!");
Toast.makeText(getBaseContext(), "Camera device", Toast.LENGTH_LONG).show();
Intent intent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
fileUri = getOutputMediaFileUri(MEDIA_TYPE_VIDEO); // create a file to save the video
intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri); // set the image file name
intent.putExtra(MediaStore.EXTRA_DURATION_LIMIT,2);
intent.putExtra(MediaStore.INTENT_ACTION_VIDEO_CAMERA, true);
intent.putExtra(MediaStore.MEDIA_SCANNER_VOLUME, 100);
intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1); // set the video image quality to high
// start the Video Capture Intent
startActivityForResult(intent, CAPTURE_VIDEO_ACTIVITY_REQUEST_CODE);
}else{
//no
Log.i("camera", "This device has no camera!");
Toast.makeText(getBaseContext(), "No Camera device", Toast.LENGTH_LONG).show();
}
}
private static Uri getOutputMediaFileUri(int type){
return Uri.fromFile(getOutputMediaFile(type));
}
/** Create a File for saving an image or video */
private static File getOutputMediaFile(int type)
{
File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_DOWNLOADS), "MyCameraApp");
if (! mediaStorageDir.exists()){
if (! mediaStorageDir.mkdirs()){
System.out.println("MyCameraApp");
return null;
}
}
// Create a media file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
File mediaFile;
if(type == MEDIA_TYPE_VIDEO)
{
mediaFile = new File(mediaStorageDir.getPath() + File.separator +
"VID_"+ timeStamp + ".mp4");
}
else
{
return null;
}
return mediaFile;
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == CAPTURE_VIDEO_ACTIVITY_REQUEST_CODE) {
if (resultCode == RESULT_OK) {
// Video captured and saved to fileUri specified in the Intent
Toast.makeText(this, "Video saved to:\n" +
data.getData(), Toast.LENGTH_LONG).show();
System.out.println("Video saved to:"+data.getData());
} else if (resultCode == RESULT_CANCELED) {
Toast.makeText(this, "video cancel", Toast.LENGTH_LONG).show();
// User cancelled the video capture
} else {
System.out.println("video capyured failed.>.1!!!!");
// Video capture failed, advise user
}
}
}
在上面的代码中,我在模拟器中获取视频屏幕, 但它就像记录为方框,即黑白框...!!!!!!!!!!!
在模拟器中,我无法获取实时视频,它也没有启用网络摄像头。
有趣的是, 此代码已在另一台计算机(戴尔网络摄像头)中成功运行。在那台机器上启用网络摄像头和录制视频非常慢,但这是在模拟器中识别和启用摄像头。
另一台机器是 Compaq,不幸的是它无法工作并且无法识别网络摄像头。
请提供任何帮助以激活此网络摄像头设施。
最佳答案
旧线程,但只是为正在处理此问题的任何人添加信息。您需要做的就是通过命令行启动模拟器,替换为您要使用相机的 avd:
emulator -camera-front webcam0 -avd <your_avd_name>
关于android - 如何在 Android 模拟器 4.0 中启用网络摄像头?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/10718386/