我的应用有问题。我有一个流媒体广播电台的应用程序。当用户单击gridview的项目时，流开始。为了停止流，我做了一个按钮（停止），当流开始时出现。当用户单击gridview的相同项目多次时会出现问题，因为当单击停止按钮时，流不会停止，我该如何解决？
public class MainActivity extends ActionBarActivity {
private GridView grid;
private InterstitialAd interstitial, inter2;
private TextView name;
private ProgressBar bar;
private ImageView stop;
private RelativeLayout rela;
private RadioPlayerManager mRadioManager;
private String[] web = {
"Radio RDS",
"Rai 1 Radio",
"Radio R101",
"Radio RTL102.5",
"Radio Virgin",
"Radio RMC",
"Radio Antenna1",
"Radio 105",
"Radio Milano",
"Radio Onda Libera",
};
private int[] imageId = {
R.drawable.playy,
R.drawable.playy,
R.drawable.playy,
R.drawable.playy,
R.drawable.playy,
R.drawable.playy,
R.drawable.playy,
R.drawable.playy,
R.drawable.playy,
R.drawable.playy,
R.drawable.playy,
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mRadioManager = new RadioPlayerManager();
rela = (RelativeLayout) findViewById(R.id.relativeLayout);
bar = (ProgressBar) findViewById(R.id.progressBar);
stop = (ImageView) findViewById(R.id.imageView);
name = (TextView) findViewById(R.id.textView3);
grid = (GridView) findViewById(R.id.gridView1);
bar.setVisibility(View.GONE);
rela.setVisibility(View.GONE);
CustomGrid adapter = new CustomGrid(MainActivity.this, web, imageId);
grid.setAdapter(adapter);
ads();
listeners();
firstRun();
animations();
}
private void ads() {
interstitial = new InterstitialAd(this);
interstitial.setAdUnitId("ca-app-pub-5426545253667840/9595287619");
inter2 = new InterstitialAd(this);
inter2.setAdUnitId("ca-app-pub-5426545253667840/9595287619");
AdRequest adRequest1 = new AdRequest.Builder().build();
inter2.loadAd(adRequest1);
inter2.setAdListener(new AdListener() {
public void onAdLoaded() {
displayInterstitial();
}
});
AdRequest adRequest2 = new AdRequest.Builder().build();
interstitial.loadAd(adRequest2);
interstitial.setAdListener(new AdListener() {
public void onAdLoaded() {
displayInterstitial();
}
public void onAdClosed() {
AdRequest adRequest = new AdRequest.Builder()
.addTestDevice(AdRequest.DEVICE_ID_EMULATOR).build();
// Load the interstitial ad again
interstitial.loadAd(adRequest);
}
});
}
public void displayInterstitial() {
if (interstitial.isLoaded()) {
}
}
private void firstRun() {
boolean firstrun = getSharedPreferences("PREFERENCE", MODE_PRIVATE).getBoolean("firstrun", true);
if (firstrun) {
new android.app.AlertDialog.Builder(this)
.setTitle("Radio Italia") //set the Title text
.setMessage("Ciao! " +
"Con Radio Italia puoi ascoltare la maggior parte delle radio italiane gratis, senza nessun costo." +
"Radio Italia ha al suo interno degli spot(ads) che aiutano lo sviluppatore a continuare il suo lavoro." +
"Se ti piace l'app non dimenticarti di darli 5 stele su Play Store. Grazie!")
.setNeutralButton("OK!", null).show(); //Sets the button type
}
// Save the state with shared preferences
getSharedPreferences("PREFERENCE", MODE_PRIVATE)
.edit()
.putBoolean("firstrun", false)
.commit();
}
private void listeners() {
grid.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
rela.setVisibility(View.VISIBLE);
bar.setVisibility(View.VISIBLE);
if (position == 0) {
mRadioManager.play("http://www.rds.it:8000/stream", mediaPlayerCallback);
name.setText("Stai ascoltando RDS");
bar.setVisibility(View.INVISIBLE);
}
if (position == 1) {
mRadioManager.play("http://icestreaming.rai.it/1.mp3", mediaPlayerCallback);
name.setText("Stai ascoltando Rai 1");
bar.setVisibility(View.INVISIBLE);
}
if (position == 2) {
mRadioManager.play("http://str30.creacast.com/r101a", mediaPlayerCallback);
name.setText("Stai ascoltando R101");
bar.setVisibility(View.INVISIBLE);
}
if (position == 3) {
mRadioManager.play("http://shoutcast.rtl.it:3010/stream/1/", mediaPlayerCallback);
name.setText("Stai ascoltando RTL102.5");
bar.setVisibility(View.INVISIBLE);
}
if (position == 4) {
mRadioManager.play("http://shoutcast.unitedradio.it:1301/", mediaPlayerCallback);
name.setText("Stai ascoltando Virgin Radio");
bar.setVisibility(View.INVISIBLE);
}
if (position == 5) {
mRadioManager.play("http://shoutcast.unitedradio.it:1103/", mediaPlayerCallback);
name.setText("Stai ascoltando RMC");
bar.setVisibility(View.INVISIBLE);
}
if (position == 6) {
mRadioManager.play("http://s3.mediastreaming.it:7568/", mediaPlayerCallback);
name.setText("Stai ascoltando Antenna1");
bar.setVisibility(View.INVISIBLE);
}
if (position == 7) {
mRadioManager.play("http://shoutcast.unitedradio.it:1101/", mediaPlayerCallback);
name.setText("Stai ascoltando Radio105");
bar.setVisibility(View.INVISIBLE);
}
if (position == 8) {
mRadioManager.play("http://sh1.inmystream.info:8175/", mediaPlayerCallback);
name.setText("Stai ascoltando Radio Milano");
bar.setVisibility(View.INVISIBLE);
}
if (position == 9) {
mRadioManager.play("http://s6.mediastreaming.it:9064/", mediaPlayerCallback);
name.setText("Stai ascoltando Onda Libera");
bar.setVisibility(View.INVISIBLE);
} else {
mRadioManager.stop();
}
}
;
});
stop.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mRadioManager.stop();
rela.setVisibility(View.INVISIBLE);
interstitial.show();
}
});
}
private void animations() {
Animation anim = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.abc_fade_in);
anim.setDuration(1500);
name.setAnimation(anim);
anim.setRepeatCount(Animation.INFINITE);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu items for use in the action bar
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu_main, menu);
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
switch (item.getItemId()) {
case R.id.share:
shareIt();
break;
case R.id.play:
gp();
break;
case R.id.like:
fb();
break;
case R.id.plus:
plus();
break;
}
return true;
}
private void fb() {
try {
Intent fb = new Intent(Intent.ACTION_VIEW, Uri.parse("fb://page/315814045239841"));
startActivity(fb);
} catch (Exception e) {
Intent fb = new Intent(Intent.ACTION_VIEW, Uri.parse("https://www.facebook.com/Denis-Projects-315814045239841/"));
startActivity(fb);
}
}
private void shareIt() {
String shareBody = "Ascult cele mai tari posturi de manele cu aplicatia Radio manele 2016. Descarc-o si tu,e gratuit! https://play.google.com/store/apps/details?id=com.denisprojects.radiomanele2016";
Intent sharingIntent = new Intent(Intent.ACTION_SEND);
sharingIntent.setType("text/plain");
sharingIntent.putExtra(Intent.EXTRA_SUBJECT, "Radio manele 2016");
sharingIntent.putExtra(Intent.EXTRA_TEXT, shareBody);
startActivity(Intent.createChooser(sharingIntent, "Distribuie"));
}
private void gp() {
// TODO Auto-generated method stub
Intent gp = new Intent(Intent.ACTION_VIEW);
gp.setData(Uri.parse("https://play.google.com/store/apps/developer?id=DenisProjects"));
startActivity(gp);
}
private void plus() {
Intent plus = new Intent(Intent.ACTION_VIEW);
plus.setData(Uri.parse("https://plus.google.com/u/0/102131527060290623635"));
startActivity(plus);
}
private MediaPlayerCallback mediaPlayerCallback = new MediaPlayerCallback() {
@Override
public void onMetadata(String value){
}
@Override
public void onError() { rela.setVisibility(View.VISIBLE);
name.setText("Errore!Scegli altra radio");
}
@Override
public void onBuffering() {
}
@Override
public void onPlaying() {
}
@Override
public void onStopped() {
}
};
}
public class RadioPlayerManager {
private MultiPlayer mMultiPlayer;
private MediaPlayerCallback mCallback;
private static String TAG = RadioPlayerManager.class.getSimpleName();
public RadioPlayerManager() {
try {
java.net.URL.setURLStreamHandlerFactory(new java.net.URLStreamHandlerFactory() {
public java.net.URLStreamHandler createURLStreamHandler(String protocol) {
Log.d(TAG, "Asking for stream handler for protocol: '" + protocol + "'");
if ("icy".equals(protocol))
return new com.spoledge.aacdecoder.IcyURLStreamHandler();
return null;
}
});
} catch (Throwable t) {
Log.w(TAG, "Cannot set the ICY URLStreamHandler - maybe already set ? - " + t);
}
}
public void play(String url, MediaPlayerCallback callback) {
mCallback = callback;
mMultiPlayer = new MultiPlayer(mPlayerCallback, MultiPlayer.DEFAULT_AUDIO_BUFFER_CAPACITY_MS, MultiPlayer.DEFAULT_DECODE_BUFFER_CAPACITY_MS);
mMultiPlayer.playAsync(url);
mCallback.onBuffering();
}
public void stop() {
mMultiPlayer.stop();
}
private PlayerCallback mPlayerCallback = new PlayerCallback() {
@Override
public void playerStarted() {
new Handler(Looper.getMainLooper()).post(new Runnable() {
@Override
public void run() {
mCallback.onPlaying();
}
});
}
@Override
public void playerPCMFeedBuffer(boolean b, int i, int i1) {
}
@Override
public void playerStopped(int i) {
new Handler(Looper.getMainLooper()).post(new Runnable() {
@Override
public void run() {
mCallback.onStopped();
}
});
}
@Override
public void playerException(Throwable throwable) {
mCallback.onError();
}
@Override
public void playerMetadata(String key, final String value) {
if ("StreamTitle".equals(key)) {
new Handler(Looper.getMainLooper()).post(new Runnable() {
@Override
public void run() {
mCallback.onMetadata(value);
}
});
}
}
@Override
public void playerAudioTrackCreated(AudioTrack audioTrack) {
}
public boolean isPlaying(){
mMultiPlayer.stop();
return true;
}
};
}
public interface MediaPlayerCallback {
void onMetadata(String value);
void onError();
void onBuffering();
void onPlaying();
void onStopped();
}
没人知道该怎么做？
答案 0 :(得分：0)
如果所选的gridview项目已在播放，最好不要开始播放。所以你可以存储播放gridview项的值并在调用mRadioManager.play（“http://s6.mediastreaming.it:9064/”，mediaPlayerCallback）之前检查它;