在 Vitamio 中拖动 seekBar 时，进度条不准确？如何解决？
我只是想告诉大家我已经制定了一个自定义解决方案来解决这个问题。如果您仍然面临此问题，您可以从此解决方案中获得帮助。我对库中的 MediaController.java 类进行了更改。你只需要从你以前的类中替换这个类，然后运行你的代码。
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();
}
}