在 VideoView 中从暂停状态播放视频
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【中文标题】在 VideoView 中从暂停状态播放视频【英文标题】:Playing video from the pause state in VideoView 【发布时间】:2012-09-27 08:33:07 【问题描述】:对于自定义视频视图,我必须重写 MediaController(更改按钮的设计并连接到按钮暂停/播放选择器)。情况是这样的:将视频暂停并打开应用程序,然后再次恢复,视频再次开始播放,而不是从暂停的点开始播放,因此出现了问题:如何让视频开始播放从那个地方,它停止的地方?我需要在 VideoActivity 中进行哪些更改?
public class VideoActivity extends Activity
VideoView videoView;
VkMediaController mc;
private static final String CURRENT = "duration";
private static final String URL = "url";
private Uri mURI;
private int mCurrentPosition = -1;
@Override
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
this.setContentView(R.layout.video_view_player);
videoView = (VideoView) findViewById(R.id.videoViewplayer);
mc = new VkMediaController(this);
mURI = getIntent().getData();
if (savedInstanceState != null)
mURI = Uri.parse(savedInstanceState.getString(URL));
mCurrentPosition = savedInstanceState.getInt(CURRENT);
videoView.setMediaController(mc);
videoView.setVideoURI(mURI);
videoView.requestFocus();
@Override
protected void onStart()
super.onStart();
videoView.start();
if (mCurrentPosition != -1)
videoView.seekTo(mCurrentPosition);
@Override
public void onSaveInstanceState(Bundle outState)
outState.putInt(CURRENT, videoView.getCurrentPosition());
outState.putString(URL, mURI.toString());
super.onSaveInstanceState(outState);
【问题讨论】:
错误/问题是什么?这段代码有什么问题? 没有错误,但不会从当前位置开始播放,而是从头开始 你检查mCurrentPosition的值了吗? 你检查了 canSeekForward 返回的内容吗? 您检查过 onSaveInstanceState 中 getCurrentPosition 的值吗? 【参考方案1】:我认为问题是当你在onSaveInstanceState(Bundle outState)
内部调用时videoView.getCurrentPosition()
总是返回0,因为当时视频已经重置,所以当onPause()
时调用videoView.getCurrentPosition()
,这将返回你想要的值.
【讨论】:
受保护的无效 onPause() videoView.pause(); videoView.getCurrentPosition();超级.onPause(); 正确吗? 我必须将 mCurrentPosition 保留在 onSaveInstanceState(Bundle outState) 中? in onSaveInstanceState(Bundle outState) 我只保存网址? 使 mCurrentPosition 也是静态的【参考方案2】:我遇到了同样的问题。我以为我做的一切都是正确的,但它没有用。然后我只是更改了顺序,所以我先调用 VideoView.seekTo()
然后再调用 VideoView.start()
。那行得通。
我也有VideoView.requestFocus()
,但我不知道这是否重要。
videoPlayer.requestFocus();
videoPlayer.seekTo(position);
videoPlayer.start();
因此,如果您确定位置变量具有正确的值,那么这可能就是您的答案。 未加载视频时,您可能无法搜索。像这样实现 onPreparedListener:
public class VideoActivity extends Activity implements OnPreparedListener
VideoView videoPlayer;
int position;
@Override
public void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
if(savedInstanceState!=null)
position=savedInstanceState.getInt("pos")
// setting up the videoview
setContentView(R.layout.activity_video);
getIntent().getExtras().getString("url");
Uri videouri = Uri.parse(getIntent().getExtras().getString("url"));
videoPlayer = (VideoView) findViewById(R.id.videoView);
videoPlayer.setOnPreparedListener(this);
videoPlayer.setKeepScreenOn(true);
videoPlayer.setVideoURI(videouri);
/**
* Start the plaback when the video is loaded
*
* @param mp
* @see android.media.MediaPlayer.OnPreparedListener#onPrepared(android.media.MediaPlayer)
*/
public void onPrepared(MediaPlayer mp)
//this is a TextView infront of the VideoView which tells the User the Video is loading- hide that
findViewById(R.id.tv_video_load).setVisibility(View.GONE);
videoPlayer.requestFocus();
videoPlayer.seekTo(position)
videoPlayer.start();
【讨论】:
您在 onCreate() 或 onStart() 中调用这些方法? 哦,你说得对。我已经实现了 OnPreparedListener,这一切都在 onPrepared 方法中。如果视频尚未加载,则无法搜索是有道理的。 如果它不起作用,请尝试实现 OnPreparedListener 并在 onPrepared() 方法中调用它。 onStart() 和 onCreate() 在这种情况下几乎相同,因为当您更改方向时,您的 Activity 会重新创建。我会尽快编辑我的答案。【参考方案3】:Portrait to LandScape LifeCycle Demo
VideoView videoView;
int lastPosition;
int Video_STATE_POSITION = 0;
@Override
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (savedInstanceState != null)
String message = savedInstanceState.getString("message");
Toast.makeText(this, message, Toast.LENGTH_LONG).show();
lastPosition=savedInstanceState.getInt("STATE_POSITION");
videoView.seekTo(lastPosition);
videoView.start();
Log.e("Keshav", "MainActivity onCreate() is called savedInstanceState lastPosition->" + lastPosition);
@Override
public void onSaveInstanceState(Bundle outState)
outState.putString("message", "This is my message to be reloaded");
outState.putInt("STATE_POSITION", Video_STATE_POSITION);
super.onSaveInstanceState(outState);
@Override
protected void onPause()
super.onPause();
Video_STATE_POSITION = videoView.getCurrentPosition();
Log.e("Keshav", "MainActivity onPause is called ->" +Video_STATE_POSITION);
【讨论】:
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