在片段的VideoView黑色背景

时间:2018-02-24 10:48:26

标签: android

我在片段中添加了VideoView,但只有我得到了黑色背景,我尝试了两个代码,但两个都不起作用,你可以帮助我吗?

PS我不需要播放,停止按钮等任何其他只是为了显示视频如果我可以将视频的音频静音并重放,那么我添加的代码就会很好

代码1

package com.Hristijan.Aleksandar.GymAssistant.Exercises;

import android.media.session.MediaController;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.VideoView;   
import java.net.URL;    

/**
 * A simple {@link Fragment} subclass.
 */
public class BenchFragment extends Fragment {
    private VideoView MyVideoView;

    public BenchFragment() {
        // Required empty public constructor
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {

        View rootView = inflater.inflate(R.layout.fragment_bench, container, false);
        MyVideoView = (VideoView)rootView.findViewById(R.id.video_view);
        Uri uri= Uri.parse("android.resource://"+getActivity().getPackageName()+"/"+R.raw.bench);
        MyVideoView.setVideoURI(uri);
        MyVideoView.start();
        return inflater.inflate(R.layout.fragment_bench, container, false);
    }    
}

代码2

package com.hristijan.aleksandar.gymworkout.myapplication;

import android.net.Uri;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.VideoView;

import java.net.URL;

public class MainActivity extends AppCompatActivity {
    private VideoView MyVideoView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        MyVideoView = findViewById(R.id.videoViewId);
        Uri uri = Uri.parse("android.resource://"+getPackageName()+"/"+R.raw.bench);
        MyVideoView.setVideoURI(uri);
        MyVideoView.start();

    }
}

Layout.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="#000000"
    tools:context="com.Hristijan.Aleksandar.GymAssistant.Exercises.BenchFragment">

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

</LinearLayout>

3 个答案:

答案 0 :(得分:0)

  

尝试此操作,播放,重播并识别错误

private void startVideo() {
    String path = "android.resource://" + getPackageName() + "/" + R.raw.crop;
//  Log.e(TAG,Uri.parse(path) + " ");
    video_view.setVideoURI(Uri.parse(path));
    video_view.start();
    video_view.setOnErrorListener(new MediaPlayer.OnErrorListener() {
        @Override
        public boolean onError(MediaPlayer mp, int i, int i1) {
            Log.e(TAG,String.format("Error: What: %d, Extra: %d",i,i1));
            return false;
        }
    });
    video_view.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
        @Override
        public void onCompletion(MediaPlayer mp) {
            mp.start();
        }
    });
}

如果视频无法播放,则应在LogCat中记录错误。您可以使用此doc

确定哪种错误
  

关于静音音频

你可以参考这个Question基本上你只需要在内容准备就绪时获取媒体播放器对象,然后你可以通过设置 m.setVolume(0f, 0f); 来设置音频静音

答案 1 :(得分:0)

尝试将 videoView.start()放在 videoView.setOnPreparedListener()中:

videoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener(){
    @Override
        public void onPrepared(MediaPlayer mediaPlayer){
        videoView.start();
    }
});

答案 2 :(得分:0)

我确信代码1和代码2可以正常工作

首先,请确保您的视频格式为Supported Media Formats

然后,请确保您的视频文件Readable存储在bench中(并且您的文件名应为...app\src\main\res\raw而不是bench

另一方面,在Code 2中出现了问题:

MyVideoView = findViewById(R.id.videoViewId);

应该是

bench.xxx

以便通过正确的MyVideoView = findViewById(R.id.video_view);

查找VideoView