mono for android 获取不到正确mediaPlayer的duration 并且Stop()方法和Pause()方法效果居然一样

[美人迟暮了又迟暮]

using System;
using System.Threading;

using Android.App;
using Android.Content;
using Android.Runtime;
using Android.Views;
using Android.Widget;
using Android.OS;
using Android.Media;
using Android.Util;

namespace mediaPlayer
{
    [Activity(Label = "mediaPlayer", MainLauncher = true, Icon = "@drawable/icon")]
    public class MainActivity : Activity,MediaPlayer.IOnCompletionListener
    {
        int count = 1;
        MediaPlayer idPlayer;
        TextView tv;
        protected override void OnCreate(Bundle bundle)
        {
            base.OnCreate(bundle);

            // Set our view from the "main" layout resource
            SetContentView(Resource.Layout.Main);

            // Get our button from the layout resource,
            // and attach an event to it
            Button button = FindViewById<Button>(Resource.Id.MyButton);

            button.Click += delegate { button.Text = string.Format("{0} clicks!", count++); };

            Button playId = FindViewById<Button>(Resource.Id.button1);
            playId.Click += playId_Click;
            Button stop = FindViewById<Button>(Resource.Id.button2);
            stop.Click += playNet_Click;
            Button pause = FindViewById<Button>(Resource.Id.button3);
            pause.Click += playFile_Click;
            Button video = FindViewById<Button>(Resource.Id.button4);
            video.Click += video_Click;
            tv = FindViewById<TextView>(Resource.Id.textView1);
        }

        void video_Click(object sender, EventArgs e)
        {
            Intent intent = new Intent(this, typeof(Video));
            StartActivity(intent);  
        }


        void playFile_Click(object sender, EventArgs e)
        {
            idPlayer.Pause();
        }

        void playNet_Click(object sender, EventArgs e)
        {
            idPlayer.Stop();
            //int position = idPlayer.CurrentPosition / 1000;
            //Toast.MakeText(this, position.ToString(), ToastLength.Short).Show();
        }

        void playId_Click(object sender, EventArgs e)
        {
            idPlayer = new MediaPlayer();
            if (idPlayer != null)
            {
                idPlayer.SetDataSource(this.Resources.OpenRawResourceFd(Resource.Raw.yshq).FileDescriptor);
                idPlayer.SetOnCompletionListener(this);
                idPlayer.Prepare();                
                idPlayer.Start();
                Thread thread = new Thread(new ThreadStart(Run));
                thread.Start();
            }
        }

        private void Run()
        {
            while (true)
            {
                Thread.Sleep(1000);
                int i = (idPlayer.CurrentPosition / 1000);
                RunOnUiThread(() =>
                {
                    //打印当前音乐播放当前时间和总时间
                    //当前时间输出正确
                    //总共时间输出415 (总共时间为15s)
                    tv.Text = i.ToString() + "&&&" +(idPlayer.Duration).ToString();
                });
                if(i == 15)
                {
                    break;
                }
            }
        }

        public void OnCompletion(MediaPlayer mp)
        {
            mp.Stop();
            mp.Release();
        }
    }
}

[美人迟暮了又迟暮]

Pause和Stop之后再调用Start 又重新播放

[Justin-Liu]

Pause之后也不能播放了？

[Justin-Liu]

有没有跟Pause对应的Resume什么的方法？ Play可能就是重新播放的方法

[xulichun9]

楼主，我做了一下测试是可以的啊，以下是我的代码，我刚开始接触mono for android的。以后多多交流 namespace App1 { [Activity(Label = "App1", MainLauncher = true, Icon = "@drawable/icon")] public class MainActivity : Activity { int count = 0; MediaPlayer mp = new MediaPlayer(); protected override void OnCreate(Bundle bundle) { base.OnCreate(bundle); // Set our view from the "main" layout resource SetContentView(Resource.Layout.Main); // Get our button from the layout resource, // and attach an event to it Button button = FindViewById<Button>(Resource.Id.MyButton); SurfaceView sfv = FindViewById<SurfaceView>(Resource.Id.surfaceView1); button.Click += delegate { button.Text = string.Format("{0} clicks!", ++count); }; button.Click += (sender, e) => { //播放视频代码 sfv.Click += Sfv_Click; mp.SetDisplay(sfv.Holder); mp.SetDataSource("/storage/external_storage/sdcard1/111.mp4"); mp.Prepare(); mp.Start(); }; } private void Sfv_Click(object sender, EventArgs e) { if (mp.IsPlaying) { mp.Pause(); } else { mp.Start(); } } } }