我正在尝试创建播放单个音频文件的内容，并且可以使用进度/搜索栏暂停和操作。我想让一个图像占据屏幕的大部分，然后是左下方的播放暂停按钮和按钮右侧的条形图。一切都在寻找与音频无关的搜索栏。我的进度条编码可能是一个混乱，因为如果从我在互联网上看到的几个，但它们大多混淆我，因为他们是音乐播放器应用程序，而不是播放单个音频文件。
有人可以帮我进度吧吗？关于改进我的编程的任何其他技巧也会很棒。
（我对android和编程很新，只是为了警告你）
这是我的Java：
MediaPlayer mediaPlayer;
Button buttonPlayPause;
ImageView Image;
SeekBar seekBar;
private int stateMediaPlayer;
private final int stateMP_NotStarter = 0;
private final int stateMP_Playing = 1;
private final int stateMP_Pausing = 2;
int total;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.playerwere);
Image = (ImageView) findViewById(R.id.pdfview);
Image.setImageResource(R.drawable.wereim);
seekBar = (SeekBar) findViewById(R.id.seekBar);
buttonPlayPause = (Button) findViewById(R.id.playpause);
buttonPlayPause.setOnClickListener(buttonPlayPauseOnClickListener);
seekBar.setOnSeekBarChangeListener(seekBarOnSeekListener);
initMediaPlayer();
Thread currentThread = new Thread(this);
currentThread.start();
}
private void initMediaPlayer() {
mediaPlayer = new MediaPlayer();
mediaPlayer = MediaPlayer.create(were.this, R.raw.were);
stateMediaPlayer = stateMP_NotStarter;
mediaPlayer.setOnPreparedListener(new OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer arg0) {
// TODO Auto-generated method stub
total = mediaPlayer.getDuration();
}
});
seekBar.setProgress(0);
seekBar.setMax(total);
}
Button.OnClickListener buttonPlayPauseOnClickListener = new Button.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (stateMediaPlayer) {
case stateMP_NotStarter:
mediaPlayer.start();
buttonPlayPause.setBackgroundResource(android.R.drawable.ic_media_pause);
stateMediaPlayer = stateMP_Playing;
break;
case stateMP_Playing:
mediaPlayer.pause();
buttonPlayPause.setBackgroundResource(android.R.drawable.ic_media_play);
stateMediaPlayer = stateMP_Pausing;
break;
case stateMP_Pausing:
mediaPlayer.start();
buttonPlayPause.setBackgroundResource(android.R.drawable.ic_media_pause);
stateMediaPlayer = stateMP_Playing;
break;
}
}
};
SeekBar.OnSeekBarChangeListener seekBarOnSeekListener = new SeekBar.OnSeekBarChangeListener() {
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
@Override
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {
// TODO Auto-generated method stub
if (fromUser) {
mediaPlayer.seekTo(progress);
seekBar.setProgress(progress);
}
}
};
@Override
public void run() {
// TODO Auto-generated method stub
try {
while (mediaPlayer != null) {
int currentPosition = mediaPlayer.getCurrentPosition();
Message msg = new Message();
msg.what = currentPosition;
threadHandler.sendMessage(msg);
}
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
private Handler threadHandler = new Handler() {
public void handleMessage(Message msg) {
seekBar.setProgress(msg.what);
}
};
在我尝试使用seekBar之前，这就是我的java：
MediaPlayer mediaPlayer;
Button buttonPlayPause;
ImageView Image;
private int stateMediaPlayer;
private final int stateMP_NotStarter = 0;
private final int stateMP_Playing = 1;
private final int stateMP_Pausing = 2;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.playerwere);
Image = (ImageView) findViewById(R.id.pdfview);
Image.setImageResource(R.drawable.wereim);
buttonPlayPause = (Button) findViewById(R.id.playpause);
buttonPlayPause.setOnClickListener(buttonPlayPauseOnClickListener);
initMediaPlayer();
}
private void initMediaPlayer() {
mediaPlayer = new MediaPlayer();
mediaPlayer = MediaPlayer.create(were.this, R.raw.were);
stateMediaPlayer = stateMP_NotStarter;
}
Button.OnClickListener buttonPlayPauseOnClickListener = new Button.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (stateMediaPlayer) {
case stateMP_NotStarter:
mediaPlayer.start();
buttonPlayPause.setBackgroundResource(android.R.drawable.ic_media_pause);
stateMediaPlayer = stateMP_Playing;
break;
case stateMP_Playing:
mediaPlayer.pause();
buttonPlayPause.setBackgroundResource(android.R.drawable.ic_media_play);
stateMediaPlayer = stateMP_Pausing;
break;
case stateMP_Pausing:
mediaPlayer.start();
buttonPlayPause.setBackgroundResource(android.R.drawable.ic_media_pause);
stateMediaPlayer = stateMP_Playing;
break;
}
}
};
在Vishal Vaja的回答之后，这是我的java：
MediaPlayer mediaPlayer;
Button buttonPlayPause;
ImageView Image;
SeekBar seekBar;
Handler handler;
private int stateMediaPlayer;
private final int stateMP_NotStarter = 0;
private final int stateMP_Playing = 1;
private final int stateMP_Pausing = 2;
private int mediaPos;
private int mediaMax;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.playerwere);
Image = (ImageView) findViewById(R.id.pdfview);
Image.setImageResource(R.drawable.wereim);
seekBar = (SeekBar) findViewById(R.id.seekBar);
buttonPlayPause = (Button) findViewById(R.id.playpause);
buttonPlayPause.setOnClickListener(buttonPlayPauseOnClickListener);
seekBar.setOnSeekBarChangeListener(seekBarOnSeekChangeListener);
initMediaPlayer();
}
private void initMediaPlayer() {
handler = new Handler();
mediaPlayer = new MediaPlayer();
mediaPlayer = MediaPlayer.create(were.this, R.raw.were);
stateMediaPlayer = stateMP_NotStarter;
mediaPos = mediaPlayer.getCurrentPosition();
mediaMax = mediaPlayer.getDuration();
seekBar.setMax(mediaMax); // Set the Maximum range of the
// seekBar.setProgress(mediaPos);// set
// current progress to song's
handler.removeCallbacks(moveSeekBarThread);
handler.postDelayed(moveSeekBarThread, 100);
}
private Runnable moveSeekBarThread = new Runnable() {
public void run() {
if (mediaPlayer.isPlaying()) {
int mediaPos_new = mediaPlayer.getCurrentPosition();
int mediaMax_new = mediaPlayer.getDuration();
seekBar.setMax(mediaMax_new);
seekBar.setProgress(mediaPos_new);
handler.postDelayed(this, 100); // Looping the thread after 0.1
// second
// seconds
}
}
};
Button.OnClickListener buttonPlayPauseOnClickListener = new Button.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (stateMediaPlayer) {
case stateMP_NotStarter:
mediaPlayer.start();
buttonPlayPause
.setBackgroundResource(android.R.drawable.ic_media_pause);
stateMediaPlayer = stateMP_Playing;
break;
case stateMP_Playing:
mediaPlayer.pause();
buttonPlayPause
.setBackgroundResource(android.R.drawable.ic_media_play);
stateMediaPlayer = stateMP_Pausing;
break;
case stateMP_Pausing:
mediaPlayer.start();
buttonPlayPause
.setBackgroundResource(android.R.drawable.ic_media_pause);
stateMediaPlayer = stateMP_Playing;
break;
}
}
};
SeekBar.OnSeekBarChangeListener seekBarOnSeekChangeListener = new SeekBar.OnSeekBarChangeListener() {
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
@Override
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {
// TODO Auto-generated method stub
if (fromUser) {
mediaPlayer.seekTo(progress);
seekBar.setProgress(progress);
}
}
};
答案 0 :(得分：4)
我认为这对你有用。
创建一个将检查歌曲位置的线程，并将像这样移动搜索栏
private Runnable moveSeekBarThread = new Runnable() {
public void run() {
if(mediaPlayer.isplaying){
int mediaPos_new = mediaPlayer.getCurrentPosition();
int mediaMax_new = mediaPlayer.getDuration();
seekBar.setMax(mediaMax_new);
seekBar.setProgress(mediaPos_new);
handler.postDelayed(this, 100); //Looping the thread after 0.1 second
// seconds
}
}
};
并像这样调用该线程，
mediaPos = mediaPlayer.getCurrentPosition();
mediaMax = mediaPlayer.getDuration();
seekBar.setMax(mediaMax); // Set the Maximum range of the
seekBar.setProgress(mediaPos);// set current progress to song's
handler.removeCallbacks(moveSeekBarThread);
handler.postDelayed(moveSeekBarThread, 100);
答案 1 :(得分：0)
public class DetailMusic extends Activity实现了View.OnClickListener {
SeekBar seek_bar;
Button play_button, pause_button;
TextView text_shown;
Handler seekHandler = new Handler();
Bundle bundle = new Bundle();
String Musicnames;
int mediaMax;
int mediaPos = 0;
MediaPlayer mp = new MediaPlayer();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_detailmusic);
bundle = getIntent().getExtras();
if (bundle != null) {
Musicnames = bundle.getString("musicnbames");
System.out.println("++++++++++++++++++++++++++++++++" + Musicnames);
Log.e("musicfoldername", Musicnames);
}
seek_bar = (SeekBar) findViewById(R.id.seek_bar);
play_button = (Button) findViewById(R.id.play_button);
pause_button = (Button) findViewById(R.id.pause_button);
text_shown = (TextView) findViewById(R.id.text_shown);
play_button.setOnClickListener(this);
pause_button.setOnClickListener(this);
//seekUpdation();
String PATH_TO_FILE = Musicnames;
// MediaPlayer mp = new MediaPlayer();
try {
mp.setDataSource(PATH_TO_FILE);
mp.prepare();
} catch (IOException e) {
}
mp.start();
seek_bar.setMax(mp.getDuration());
try {
mp.setDataSource(Musicnames);
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SecurityException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
mediaPos = mp.getCurrentPosition();
mediaMax = mp.getDuration();
seek_bar.setMax(mediaMax); // Set the Maximum range of the
seek_bar.setProgress(mediaPos);// set current progress to song's
seekHandler.removeCallbacks(moveSeekBarThread);
seekHandler.postDelayed(moveSeekBarThread, 100); //cal the thread after 100 milliseconds
}
private Runnable moveSeekBarThread = new Runnable() {
public void run() {
if (mp.isPlaying()) {
int mediaPos_new = mp.getCurrentPosition();
int mediaMax_new = mp.getDuration();
seek_bar.setMax(mediaMax_new);
seek_bar.setProgress(mediaPos_new);
seekHandler.postDelayed(this, 100); //Looping the thread after 0.1 second
}
}
};
@Override
public void onClick(View view) {
switch (view.getId()) {
case R.id.play_button:
mp.reset();
// mp.start（）; text_shown.setText（＆＃34;踢球...＆＃34）;
break;
case R.id.pause_button:
mp.pause();
text_shown.setText("Paused...");
}
}
}