Xamarin 视频播放器中的前进和后退选项问题 Android

Question

我需要在 Xamarin(Andriod) 开发的移动应用程序中显示一个视频，其中向前移动 15 秒，向后移动 5 秒

我能得到一些帮助吗

Answer 1

在您的情况下，您似乎使用了 MediaController 。但是，如果要自定义前进和后退的长度，则需要创建一个自定义 MediaController .

在XML

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:showIn="@layout/activity_main"
    android:orientation="vertical">

    <VideoView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/videoView1" />

    <LinearLayout
        android:background="@android:color/darker_gray"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        >

        <Button
            android:text="back"
            android:id="@+id/back"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"/>

        <Button
            android:text="play"
            android:id="@+id/play"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"/>

        <Button
            android:text="forward"
            android:id="@+id/forward"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"/>

    </LinearLayout>



</LinearLayout>

在Activity

VideoView videoView;

   protected override void OnCreate(Bundle savedInstanceState)
    {
        base.OnCreate(savedInstanceState);
        Xamarin.Essentials.Platform.Init(this, savedInstanceState);
        SetContentView(Resource.Layout.activity_main);

       //...


        videoView = FindViewById<VideoView>(Resource.Id.videoView1);
        videoView.SetVideoURI(Android.Net.Uri.Parse("xxx.mp4")); // Path of your saved video file.

        videoView.Start();


        Button back = FindViewById<Button>(Resource.Id.back);
        back.Click += Back_Click;

        Button play = FindViewById<Button>(Resource.Id.play);
        play.Click += Play_Click;

        Button forward = FindViewById<Button>(Resource.Id.forward);
        forward.Click += Forward_Click; ;
    }

    private void Forward_Click(object sender, EventArgs e)
    {
        videoView.SeekTo(videoView.CurrentPosition + 5 * 1000);
    }

    private void Play_Click(object sender, EventArgs e)
    {
        var button = sender as Button;
        if (videoView.IsPlaying)
        {
            button.Text = "Play";
            videoView.Pause();

        }
        else
        {
            button.Text = "Pause";
            videoView.Start();
        }

    }

    private void Back_Click(object sender, EventArgs e)
    {
        videoView.SeekTo(videoView.CurrentPosition-15*1000);
    }

而且这样你只需要根据需要设置按钮的图标即可。

Xamarin 视频播放器中的前进和后退选项问题 Android

Issue with Forward and backward options in Video player in Xamarin Android

xamarin.android

android-videoview

在XML

在Activity