Android 基本录像的问题
因此,我遵循了入门视频录制应用程序的默认配方,但我遇到了无法理解的错误。我遇到的错误在记录器上。Prepare();它是说/0/test.mp4:openfailed:enoint(没有这样的文件或目录)现在我将把代码I粘贴到下面,错误是第45行。此外,我已将权限正确设置为Android 基本录像的问题,android,xamarin,xamarin.android,video-capture,xamarin-studio,Android,Xamarin,Xamarin.android,Video Capture,Xamarin Studio,因此,我遵循了入门视频录制应用程序的默认配方,但我遇到了无法理解的错误。我遇到的错误在记录器上。Prepare();它是说/0/test.mp4:openfailed:enoint(没有这样的文件或目录)现在我将把代码I粘贴到下面,错误是第45行。此外,我已将权限正确设置为 <uses-permission android:name="android.permission.CAMERA" /> <uses-permission android:name="android.per
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.CAPTURE_SECURE_VIDEO_OUTPUT" />
<uses-permission android:name="android.permission.CAPTURE_VIDEO_OUTPUT" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
我认为这很好,因为我添加了recpie中的“摄像头和录音”,然后在发布之前通过谷歌搜索添加了其他三个
using System;
using Android.App;
using Android.Content;
using Android.Runtime;
using Android.Views;
using Android.Widget;
using Android.OS;
using Android.Media;
namespace CameraTest
{
[Activity (Label = "CameraTest", MainLauncher = true, Icon = "@drawable/icon")]
public class MainActivity : Activity
{
MediaRecorder recorder;
protected override void OnCreate (Bundle bundle)
{
base.OnCreate (bundle);
SetContentView (Resource.Layout.Main);
var record = FindViewById<Button> (Resource.Id.Record);
var stop = FindViewById<Button> (Resource.Id.Stop);
var play = FindViewById<Button> (Resource.Id.Play);
var video = FindViewById<VideoView> (Resource.Id.SampleVideoView);
Android.OS.Environment.ExternalStorageDirectory.SetWritable(true);
string path = Android.OS.Environment.ExternalStorageDirectory.Name + "/test.mp4";
// Set our view from the "main" layout resource
// Get our button from the layout resource,
// and attach an event to it
record.Click += delegate {
video.StopPlayback ();
recorder = new MediaRecorder ();
recorder.SetVideoSource (VideoSource.Camera);
recorder.SetAudioSource (AudioSource.Mic);
recorder.SetOutputFormat (OutputFormat.Default);
recorder.SetVideoEncoder (VideoEncoder.Default);
recorder.SetAudioEncoder (AudioEncoder.Default);
recorder.SetOutputFile (path);
recorder.SetPreviewDisplay (video.Holder.Surface);
recorder.Prepare ();
recorder.Start (); } ;
stop.Click += delegate {
if (recorder != null) {
recorder.Stop ();
recorder.Release ();
}
};
play.Click += delegate {
var uri = Android.Net.Uri.Parse (path);
video.SetVideoURI (uri);
video.Start ();
};
}
protected override void OnDestroy ()
{
base.OnDestroy ();
if (recorder != null) {
recorder.Release ();
recorder.Dispose ();
recorder = null;
}
}
}
}
使用系统;
使用Android.App;
使用Android.Content;
使用Android.Runtime;
使用Android.Views;
使用Android.Widget;
使用Android.OS;
使用Android.Media;
名称空间摄像师
{
[活动(Label=“CameraTest”,MainLauncher=true,Icon=“@drawable/Icon”)]
公共课活动:活动
{
媒体记录器;
创建时受保护的覆盖无效(捆绑包)
{
base.OnCreate(bundle);
SetContentView(Resource.Layout.Main);
var record=findviewbyd(Resource.Id.record);
var stop=findviewbyd(Resource.Id.stop);
var play=findviewbyd(Resource.Id.play);
var video=findviewbyd(Resource.Id.SampleVideoView);
Android.OS.Environment.ExternalStorageDirectory.SetWritable(true);
字符串路径=Android.OS.Environment.ExternalStorageDirectory.Name+“/test.mp4”;
//从“主”布局资源设置视图
//从布局资源中获取我们的按钮,
//并在其上附加一个事件
记录。单击+=委派{
video.StopPlayback();
记录器=新的MediaRecorder();
recorder.SetVideoSource(VideoSource.Camera);
recorder.SetAudioSource(AudioSource.Mic);
recorder.SetOutputFormat(OutputFormat.Default);
recorder.SetVideoEncoder(VideoEncoder.Default);
recorder.SetAudioEncoder(AudioEncoder.Default);
recorder.SetOutputFile(路径);
recorder.SetPreviewDisplay(video.Holder.Surface);
记录器。准备();
Start();};
停止。单击+=委派{
if(记录器!=null){
停止();
Release();
}
};
播放。单击+=委派{
var uri=Android.Net.uri.Parse(路径);
video.SetVideoURI(uri);
video.Start();
};
}
受保护的覆盖无效OnDestroy()
{
base.ondestory();
if(记录器!=null){
Release();
Dispose();
记录器=空;
}
}
}
}
更改
string path = Android.OS.Environment.ExternalStorageDirectory.Name + "/test.mp4";
致:
原始代码仅使用目录名称而不是完整路径作为输出位置。此外,配方似乎不正确。现在填写错误报告。
string path = Android.OS.Environment.ExternalStorageDirectory.AbsolutePath + "/test.mp4";