我已经问过这个问题2次现在仍然没有得到它的工作。任何帮助都很棒
完成音频后,我的ProgressBar不会重置,栏会保持最大蓝线。我之前问了一个问题,并让它工作但现在只是停止工作,不知道为什么它没有。任何帮助都会很棒。
我想要的是随机选择一个音频然后播放一个音频,完成后你可以再次按下播放来听取它随机选择的同一个音频。
Heres代码:
public class player2 extends Activity implements Runnable {
private MediaPlayer mp;
private ProgressBar progressBar;
private ImageButton pauseicon;
private final int NUM_SOUND_FILES = 3; //*****REPLACE THIS WITH THE ACTUAL NUMBER OF SOUND FILES YOU HAVE*****
private int mfile[] = new int[NUM_SOUND_FILES];
private Random rnd = new Random();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.player_2);
pauseicon = (ImageButton) findViewById(R.id.pauseicon);
progressBar = (ProgressBar) findViewById(R.id.progressBar);
getActionBar().setDisplayHomeAsUpEnabled(true);
mfile[0] = R.raw.sound04; //****REPLACE THESE WITH THE PROPER NAMES OF YOUR SOUND FILES
mfile[1] = R.raw.sound05; //PLACE THE SOUND FILES IN THE /res/raw/ FOLDER IN YOUR PROJECT*****
mfile[2] = R.raw.sound06;
// Listeners
/**
* Play button click event
* plays a song and changes button to pause image
* pauses a song and changes button to play image
* */
try{
mp = MediaPlayer.create(player2.this, mfile[rnd.nextInt(NUM_SOUND_FILES)]);
mp.seekTo(0);
mp.start(); ;
progressBar.setVisibility(ProgressBar.VISIBLE);
progressBar.setProgress(0);
progressBar.setMax(100);
new Thread(this).start();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalStateException e) {
e.printStackTrace();
}
mp.setOnCompletionListener(new OnCompletionListener() {
public void onCompletion(MediaPlayer mp) {
pauseicon.setImageResource(R.drawable.playicon);
}
});
pauseicon.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
// No need to check if it is pauseicon
if(mp.isPlaying()){
mp.pause();
((ImageButton) v).setImageResource(R.drawable.playicon);
} else {
mp.start();
((ImageButton) v).setImageResource(R.drawable.pauseicon);
}}});
}
public void run() {
int currentPosition= 0;
int total = mp.getDuration();
while (mp!=null && currentPosition<=total) {
try {
Thread.sleep(1000);
currentPosition= mp.getCurrentPosition();
} catch (InterruptedException e) {
return;
} catch (Exception e) {
return;
}
progressBar.setProgress(currentPosition);
}
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
NavUtils.navigateUpFromSameTask(this);
if (mp != null)
if(mp.isPlaying())
mp.stop();
mp.release();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
@Override
public void onBackPressed(){
if (mp != null){
if(mp.isPlaying())
mp.stop();
mp.release();
}
//there is no reason to call super.finish(); here
//call super.onBackPressed(); and it will finish that activity for you
super.onBackPressed();
}
}
答案 0 :(得分:1)
我没有彻底检查所有代码,但是我很快就会猜到你的线程(更新进度条)在完成时停止,你再也不会启动它(即用户再次点击播放时) 。只需尝试重新启动pauseicon.setOnClickListener
中的线程(播放完成时)。例如:
pauseicon.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
if(mp.isPlaying()) {
mp.pause();
((ImageButton) v).setImageResource(R.drawable.playicon);
} else {
mp.start();
((ImageButton) v).setImageResource(R.drawable.pauseicon);
// RESTART THE UPDATE THREAD //
new Thread(this).start();
}
}
});
编辑使用静态变量来存储线程,以便可以从视图的onClick
方法重新启动它:
// add this to your class as a member
static Thread progressThread = new Thread(this);
// add this to BOTH onCreate and onClick
progressThread.start();
如果这不起作用(我现在无法测试),你可以简单地保持线程运行,例如:
// flag to set when thread should be actively running
static boolean runThread = true;
// change your run method to something as follows
public void run() {
while ( runThread ) {
if ( mp != null && currentPosition <= total ) {
int currentPosition= 0;
int total = mp.getDuration();
try {
Thread.sleep(1000);
currentPosition= mp.getCurrentPosition();
} catch (InterruptedException e) {
return;
} catch (Exception e) {
return;
}
progressBar.setProgress(currentPosition);
}
else
Thread.sleep(1000);
}
}
// then when you no longer need to update the progress bar set the flag to false,
// which will cause your thread to finish. this can go anywhere, depending on
// your needs
runThread = false;