小编Max*_*kiy的帖子

我想录制最高质量的视频。对于我的设备 (LG G Flex 2)，它是 3840x2160。此分辨率提供库存相机。除了相机参数信息之外，第 3 方应用程序还可以使用视频大小。

如果我尝试使用配置文件：

CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_2160P)

它返回假。没有这样的配置文件。

我也试过这个：

CamcorderProfile prof = CamcorderProfile.get(CamcorderProfile.QUALITY_1080P);
prof.videoFrameHeight = 2160;
prof.videoFrameWidth = 3840;
mMediaRecorder.setProfile(prof);

但它也不起作用。

最后：

mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);
mMediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
mMediaRecorder.setVideoSize(3840, 2160);

也不行。

错误是

03-20 01:53:02.800: E/MediaRecorder(17459): start failed: -19

有没有其他方法可以录制视频？我正在使用 camera1 api 并camera.getParameters().getSupportedVideoSizes()包含 3840x2160

如何自定义前台服务通知？我试过了：

private void startForegoundService() {
    RemoteViews remoteViews = new RemoteViews(getPackageName(),
            R.layout.custom_notification);
    Notification.Builder mBuilder = new Notification.Builder(this)
            .setContent(remoteViews);

    startForeground(mforegroundNotificationId, mBuilder.build());
}

其中R.layout.custom_notification是：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/notification_layout_root"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#7777"
    android:padding="3dp" >

    <ImageView
        android:id="@+id/button_enable_alarm"
        android:layout_width="44dp"
        android:layout_height="44dp"
        android:layout_marginRight="10dp"
        android:contentDescription="Eye"
        android:src="@drawable/action_enable_alarm" />

    <TextView
        android:id="@+id/text"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textColor="#FFF"
        android:textSize="24sp" />

</LinearLayout>

但这没有任何作用。我需要完全自定义前台服务通知。不仅是“假”服务通知。

我需要加速捕获camera2 API.我试图从谷歌样本构建"android-Camera2Basic"项目.对于来自示例的默认捕获请求:

 if (null == activity || null == mCameraDevice) {
            return;
        }
        // This is the CaptureRequest.Builder that we use to take a picture.
        final CaptureRequest.Builder captureBuilder =
                mCameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_STILL_CAPTURE);
        captureBuilder.addTarget(mImageReader.getSurface());

        // Use the same AE and AF modes as the preview.
        captureBuilder.set(CaptureRequest.CONTROL_AF_MODE,
                CaptureRequest.CONTROL_AF_MODE_CONTINUOUS_PICTURE);
        captureBuilder.set(CaptureRequest.CONTROL_AE_MODE,
                CaptureRequest.CONTROL_AE_MODE_ON_AUTO_FLASH);

        // Orientation
        int rotation = activity.getWindowManager().getDefaultDisplay().getRotation();
        captureBuilder.set(CaptureRequest.JPEG_ORIENTATION, ORIENTATIONS.get(rotation));

        CameraCaptureSession.CaptureCallback CaptureCallback
                = new CameraCaptureSession.CaptureCallback() {

            @Override
            public void onCaptureCompleted(CameraCaptureSession session, CaptureRequest request,
                                           TotalCaptureResult result) {
                showToast("Saved: " + mFile);
                unlockFocus();
            }
        };

        mCaptureSession.stopRepeating();
        mCaptureSession.capture(captureBuilder.build(), CaptureCallback, …