我在我的应用程序中使用Vitamio Library。但是问题是，在播放时，当我尝试向前或向后移动搜索栏时，进度栏是准确的。
我调试了代码，发现在MediaController类的setProgress()方法中：
long position = mPlayer.getCurrentPosition();
这个位置总是一样的。我不明白为什么
getCurrentPosition()总是返回相同的值。我也在Vitamio网站上搜索了它，发现：
https://www.vitamio.org/en/docs/FAQ/2013/0509/6.html
当我拖动seekBar时，为什么进度栏不正确？
没关系，这不是Vitamio的错误，因为您必须将seekBar拖动到关键帧，但是关键帧并不总是在每个时间戳上，除非您使用仅内部编码。
这是什么意思？以及我该如何解决。请帮我。
最佳答案
在Vitamio中，当我拖动seekBar时，进度条是否不正确？如何解决？
我只是想告诉大家，我已经制定了自定义解决方案来解决此问题。如果仍然遇到此问题，可以从此解决方案中寻求帮助。我对库中的MediaController.java类进行了更改。您只需要从先前的类中替换该类，然后运行您的代码即可。
package io.vov.vitamio.widget;
import android.annotation.SuppressLint;
import android.annotation.TargetApi;
import android.content.Context;
import android.graphics.Rect;
import android.media.AudioManager;
import android.os.Build;
import android.os.Handler;
import android.os.Message;
import android.util.AttributeSet;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.WindowManager;
import android.widget.FrameLayout;
import android.widget.ImageButton;
import android.widget.PopupWindow;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.TextView;
import java.lang.reflect.Method;
import io.vov.vitamio.utils.Log;
import io.vov.vitamio.utils.StringUtils;
public class MediaController extends FrameLayout {
private static final int sDefaultTimeout = 3000;
private static final int FADE_OUT = 1;
private static final int SHOW_PROGRESS = 2;
private MediaPlayerControl mPlayer;
private Context mContext;
private PopupWindow mWindow;
private int mAnimStyle;
private View mAnchor;
private View mRoot;
private SeekBar mProgress;
private TextView mEndTime, mCurrentTime;
private TextView mFileName;
private OutlineTextView mInfoView;
private String mTitle;
private long mDuration;
private boolean mShowing;
private boolean mDragging;
private boolean mInstantSeeking = false;
private boolean mFromXml = false;
private ImageButton mPauseButton;
private AudioManager mAM;
private OnShownListener mShownListener;
private OnHiddenListener mHiddenListener;
private boolean isSeekBar = false; // Change for video time stuck
private boolean isPlayButtonVisible = false; // Change for video time stuck
@SuppressLint("HandlerLeak")
private Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
long pos;
switch (msg.what) {
case FADE_OUT:
hide();
break;
case SHOW_PROGRESS:
if(!isSeekBar){ // Change for video time stuck
pos = setProgress();
if (!mDragging && mShowing) {
msg = obtainMessage(SHOW_PROGRESS);
sendMessageDelayed(msg, 1000 - (pos % 1000));
// updatePausePlay(); // Change for video time stuck
}
}
break;
}
}
};
private View.OnClickListener mPauseListener = new View.OnClickListener() {
public void onClick(View v) {
doPauseResume();
show(sDefaultTimeout);
}
};
private OnSeekBarChangeListener mSeekListener = new OnSeekBarChangeListener() {
public void onStartTrackingTouch(SeekBar bar) {
if(mPlayer.isPlaying()){ // // Change for video time stuck
isSeekBar = true; // // Change for video time stuck
mDragging = true;
show(3600000);
mHandler.removeMessages(SHOW_PROGRESS);
if (mInstantSeeking)
mAM.setStreamMute(AudioManager.STREAM_MUSIC, true);
if (mInfoView != null) {
mInfoView.setText("");
mInfoView.setVisibility(View.VISIBLE);
}
}
}
public void onProgressChanged(SeekBar bar, int progress, boolean fromuser) {
if (!fromuser)
return;
if(mPlayer.isPlaying()){ // // Change for video time stuck
long newposition = (mDuration * progress) / 1000;
String time = StringUtils.generateTime(newposition);
if (mInstantSeeking)
mPlayer.seekTo(newposition);
if (mInfoView != null)
mInfoView.setText(time);
if (mCurrentTime != null)
mCurrentTime.setText(time);
}
}
public void onStopTrackingTouch(SeekBar bar) {
isSeekBar = false; // // Change for video time stuck
if(mPlayer.isPlaying()){ // // Change for video time stuck
if (!mInstantSeeking)
mPlayer.seekTo((mDuration * bar.getProgress()) / 1000);
if (mInfoView != null) {
mInfoView.setText("");
mInfoView.setVisibility(View.GONE);
}
show(sDefaultTimeout);
mHandler.removeMessages(SHOW_PROGRESS);
mAM.setStreamMute(AudioManager.STREAM_MUSIC, false);
mDragging = false;
mHandler.sendEmptyMessageDelayed(SHOW_PROGRESS, 1000);
}
}
};
public MediaController(Context context, AttributeSet attrs) {
super(context, attrs);
mRoot = this;
mFromXml = true;
initController(context);
}
public MediaController(Context context) {
super(context);
if (!mFromXml && initController(context))
initFloatingWindow();
}
private boolean initController(Context context) {
mContext = context;
mAM = (AudioManager) mContext.getSystemService(Context.AUDIO_SERVICE);
return true;
}
@Override
public void onFinishInflate() {
if (mRoot != null)
initControllerView(mRoot);
}
private void initFloatingWindow() {
mWindow = new PopupWindow(mContext);
mWindow.setFocusable(false);
mWindow.setBackgroundDrawable(null);
mWindow.setOutsideTouchable(true);
mAnimStyle = android.R.style.Animation;
}
@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
public void setWindowLayoutType() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
try {
mAnchor.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION);
Method setWindowLayoutType = PopupWindow.class.getMethod("setWindowLayoutType", new Class[] { int.class });
setWindowLayoutType.invoke(mWindow, WindowManager.LayoutParams.TYPE_APPLICATION_ATTACHED_DIALOG);
} catch (Exception e) {
Log.e("setWindowLayoutType", e);
}
}
}
/**
* Set the view that acts as the anchor for the control view. This can for
* example be a VideoView, or your Activity's main view.
*
* @param view The view to which to anchor the controller when it is visible.
*/
public void setAnchorView(View view) {
mAnchor = view;
if (!mFromXml) {
removeAllViews();
mRoot = makeControllerView();
mWindow.setContentView(mRoot);
mWindow.setWidth(LayoutParams.MATCH_PARENT);
mWindow.setHeight(LayoutParams.WRAP_CONTENT);
}
initControllerView(mRoot);
}
/**
* Create the view that holds the widgets that control playback. Derived
* classes can override this to create their own.
*
* @return The controller view.
*/
protected View makeControllerView() {
return ((LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate(getResources().getIdentifier("mediacontroller", "layout", mContext.getPackageName()), this);
}
private void initControllerView(View v) {
mPauseButton = (ImageButton) v.findViewById(getResources().getIdentifier("mediacontroller_play_pause", "id", mContext.getPackageName()));
if (mPauseButton != null) {
mPauseButton.requestFocus();
mPauseButton.setOnClickListener(mPauseListener);
}
mProgress = (SeekBar) v.findViewById(getResources().getIdentifier("mediacontroller_seekbar", "id", mContext.getPackageName()));
if (mProgress != null) {
if (mProgress instanceof SeekBar) {
SeekBar seeker = (SeekBar) mProgress;
seeker.setOnSeekBarChangeListener(mSeekListener);
}
mProgress.setMax(1000);
}
mEndTime = (TextView) v.findViewById(getResources().getIdentifier("mediacontroller_time_total", "id", mContext.getPackageName()));
mCurrentTime = (TextView) v.findViewById(getResources().getIdentifier("mediacontroller_time_current", "id", mContext.getPackageName()));
mFileName = (TextView) v.findViewById(getResources().getIdentifier("mediacontroller_file_name", "id", mContext.getPackageName()));
if (mFileName != null)
mFileName.setText(mTitle);
}
public void setMediaPlayer(MediaPlayerControl player) {
mPlayer = player;
updatePausePlay();
}
/**
* Control the action when the seekbar dragged by user
*
* @param seekWhenDragging True the media will seek periodically
*/
public void setInstantSeeking(boolean seekWhenDragging) {
mInstantSeeking = seekWhenDragging;
}
public void show() {
show(sDefaultTimeout);
}
/**
* Set the content of the file_name TextView
*
* @param name
*/
public void setFileName(String name) {
mTitle = name;
if (mFileName != null)
mFileName.setText(mTitle);
}
/**
* Set the View to hold some information when interact with the
* MediaController
*
* @param v
*/
public void setInfoView(OutlineTextView v) {
mInfoView = v;
}
/**
* <p>
* Change the animation style resource for this controller.
* </p>
* <p/>
* <p>
* If the controller is showing, calling this method will take effect only the
* next time the controller is shown.
* </p>
*
* @param animationStyle animation style to use when the controller appears
* and disappears. Set to -1 for the default animation, 0 for no animation, or
* a resource identifier for an explicit animation.
*/
public void setAnimationStyle(int animationStyle) {
mAnimStyle = animationStyle;
}
/**
* Show the controller on screen. It will go away automatically after
* 'timeout' milliseconds of inactivity.
*
* @param timeout The timeout in milliseconds. Use 0 to show the controller
* until hide() is called.
*/
public void show(int timeout) {
if (!mShowing && mAnchor != null && mAnchor.getWindowToken() != null) {
if (mPauseButton != null)
mPauseButton.requestFocus();
if (mFromXml) {
setVisibility(View.VISIBLE);
} else {
int[] location = new int[2];
mAnchor.getLocationOnScreen(location);
Rect anchorRect = new Rect(location[0], location[1], location[0] + mAnchor.getWidth(), location[1] + mAnchor.getHeight());
mWindow.setAnimationStyle(mAnimStyle);
setWindowLayoutType();
mWindow.showAtLocation(mAnchor, Gravity.NO_GRAVITY, anchorRect.left, anchorRect.bottom);
}
mShowing = true;
if (mShownListener != null)
mShownListener.onShown();
}
// updatePausePlay(); // Change for video time stuck
mHandler.sendEmptyMessage(SHOW_PROGRESS);
if (timeout != 0) {
mHandler.removeMessages(FADE_OUT);
mHandler.sendMessageDelayed(mHandler.obtainMessage(FADE_OUT), timeout);
}
}
public boolean isShowing() {
return mShowing;
}
public void hide() {
if (mAnchor == null)
return;
if (mShowing) {
try {
mHandler.removeMessages(SHOW_PROGRESS);
if (mFromXml)
setVisibility(View.GONE);
else
mWindow.dismiss();
} catch (IllegalArgumentException ex) {
Log.d("MediaController already removed");
}
mShowing = false;
if (mHiddenListener != null)
mHiddenListener.onHidden();
}
}
public void setOnShownListener(OnShownListener l) {
mShownListener = l;
}
public void setOnHiddenListener(OnHiddenListener l) {
mHiddenListener = l;
}
private long setProgress() {
if (mPlayer == null || mDragging)
return 0;
long position = mPlayer.getCurrentPosition();
long duration = mPlayer.getDuration();
if (mProgress != null) {
if (duration > 0) {
long pos = 1000L * position / duration;
mProgress.setProgress((int) pos);
}
int percent = mPlayer.getBufferPercentage();
mProgress.setSecondaryProgress(percent * 10);
}
mDuration = duration;
if (mEndTime != null)
mEndTime.setText(StringUtils.generateTime(mDuration));
if (mCurrentTime != null)
mCurrentTime.setText(StringUtils.generateTime(position));
return position;
}
@Override
public boolean onTouchEvent(MotionEvent event) {
show(sDefaultTimeout);
return true;
}
@Override
public boolean onTrackballEvent(MotionEvent ev) {
show(sDefaultTimeout);
return false;
}
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
int keyCode = event.getKeyCode();
if (event.getRepeatCount() == 0 && (keyCode == KeyEvent.KEYCODE_HEADSETHOOK || keyCode == KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE || keyCode == KeyEvent.KEYCODE_SPACE)) {
doPauseResume();
show(sDefaultTimeout);
if (mPauseButton != null)
mPauseButton.requestFocus();
return true;
} else if (keyCode == KeyEvent.KEYCODE_MEDIA_STOP) {
if (mPlayer.isPlaying()) {
mPlayer.pause();
updatePausePlay();
}
return true;
} else if (keyCode == KeyEvent.KEYCODE_BACK || keyCode == KeyEvent.KEYCODE_MENU) {
hide();
return true;
} else {
show(sDefaultTimeout);
}
return super.dispatchKeyEvent(event);
}
private void updatePausePlay() {
if (mRoot == null || mPauseButton == null)
return;
if (mPlayer.isPlaying()){
isPlayButtonVisible = false; // // Change for video time stuck
mPauseButton.setImageResource(getResources().getIdentifier("mediacontroller_pause", "drawable", mContext.getPackageName()));
}else{
isPlayButtonVisible = true; // // Change for video time stuck
mPauseButton.setImageResource(getResources().getIdentifier("mediacontroller_play", "drawable", mContext.getPackageName()));
}
}
private void doPauseResume() {
if (mPlayer.isPlaying())
mPlayer.pause();
else
mPlayer.start();
updatePausePlay();
}
@Override
public void setEnabled(boolean enabled) {
if (mPauseButton != null)
mPauseButton.setEnabled(enabled);
if (mProgress != null)
mProgress.setEnabled(enabled);
super.setEnabled(enabled);
}
public interface OnShownListener {
public void onShown();
}
public interface OnHiddenListener {
public void onHidden();
}
public interface MediaPlayerControl {
void start();
void pause();
long getDuration();
long getCurrentPosition();
void seekTo(long pos);
boolean isPlaying();
int getBufferPercentage();
}
}