完整代码：
public class RadioApp extends Activity implements OnClickListener,
OnSeekBarChangeListener, OnDrawerOpenListener, OnDrawerCloseListener {
public static final String MHYH_RADIO_LOG_TAG = "GrupoGPR";
private static int maxVolume = 0;
private static int currentVolume = 0;
private final String as = Context.AUDIO_SERVICE;
private final String ps = Context.TELEPHONY_SERVICE;
private final String ws = Context.WINDOW_SERVICE;
private AudioManager audioManager;
private TelephonyManager telephonyManager;
private WindowManager windowManager;
private Display display;
private ImageButton playButton;
private static TextView outputView;
private SeekBar volumeSeekBar;
private ImageView imageView, radioImage;
private TextView title;
private Bitmap defaultBitmap;
private CacheImageDownloader downloader;
// private ImageView volumeImageView;
private String nowPlaying = "";
private String previousPlaying = "";
private boolean inCall = false;
public static boolean wasPlaying = false;
private static boolean inBackground = false;
private final Handler handler = new Handler();
private final Handler inithandler = new Handler();
@SuppressWarnings("unused")
private SharedPreferences preferences;
private static RadioApp instance = null;
/**
* @return the instance
*/
public static RadioApp getInstance() {
return RadioApp.instance;
}
/*********************************************************************************************
*** APP ***
*********************************************************************************************/
private static Context con;
// private WebView web;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
try{
windowManager = (WindowManager) getSystemService(ws);
audioManager = (AudioManager) getSystemService(as);
telephonyManager = (TelephonyManager) getSystemService(ps);
telephonyManager.listen(new RadioPhoneStateListener(),
PhoneStateListener.LISTEN_CALL_STATE);
// UI
display = windowManager.getDefaultDisplay();
display.getOrientation();
RadioApp.con = this;
RadioApp.instance = this;
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.fradioapp);
// title = (TextView) findViewById(R.id.radioTitle);
// title.setText(AllConstant.stationName + "");
// radioImage = (ImageView) findViewById(R.id.radioImagePlaying);
// if (AllConstant.imageUrl.length() == 0) {
// radioImage.setImageBitmap(defaultBitmap);
// } else {
// downloader.download(AllConstant.imageUrl.replaceAll(" ", "%20"),
// radioImage);
// }
// playSongNow();
downloader = new CacheImageDownloader();
defaultBitmap = BitmapFactory.decodeResource(getResources(),
R.drawable.midbanner);
playButton = (ImageButton) findViewById(R.id.playButton);
playButton.setBackgroundColor(Color.TRANSPARENT);
RadioApp.outputView = (TextView) findViewById(R.id.outputViewrr);
volumeSeekBar = (SeekBar) findViewById(R.id.VolumeSeekBar);
// volumeImageView = (ImageView) findViewById(R.id.VolumeImageView);
playButton.setOnClickListener(this);
playButton.setImageResource(R.drawable.playbutton);
RadioApp.maxVolume = audioManager
.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
RadioApp.currentVolume = audioManager
.getStreamVolume(AudioManager.STREAM_MUSIC);
// try {
// if (RadioApp.currentVolume == 0) {
// volumeImageView
// .setImageResource(android.R.drawable.ic_lock_silent_mode);
// } else {
// volumeImageView
// .setImageResource(android.R.drawable.ic_lock_silent_mode_off);
// }8
// } catch (Exception e) {
// // TODO: handle exception
// }
volumeSeekBar.setMax(RadioApp.maxVolume);
volumeSeekBar.setProgress(RadioApp.currentVolume);
volumeSeekBar.setOnSeekBarChangeListener(this);
// Retrieve preferences
preferences = PreferenceManager.getDefaultSharedPreferences(this);
// Setup the Nagare service
if (MyService.getService() == null) {
MyService.startService(RadioApp.con);
runRefresh.run();
} else {
Log.w("Nagare service is not null at oncreate", "yes");
runRefresh.run();
}
final Intent intent = getIntent();
if (intent.getAction() != null
&& intent.getAction().equals(Intent.ACTION_VIEW)) {
final PlayListFile playListFile = PlayListFactory.create(
intent.getType(), intent.getData());
if (playListFile == null) {
RadioApp.outputView.setText("Not sure what to do with: "
+ intent.getAction() + ":" + intent.getDataString()
+ ":" + intent.getType());
} else {
playListFile.parse();
if (playListFile.errors() != "") {
RadioApp.outputView.setText(playListFile.errors());
} else {
RadioApp.outputView
.setText(playListFile.play_list().m_entries
.getFirst().m_url_string);
}
}
}
}catch (Exception e) {
// TODO: handle exception
}
inithandler.postDelayed(mPendingLauncherRunnable, 500);
/*
*
* admob portion
*/
// AdManager.setTestDevices(new String[] { AdManager.TEST_EMULATOR,
// "D81E0EFAB674357C2895265D9C5C13D5" });
//
// final AdRequest adRequest = new AdRequest();
// adRequest.addTestDevice("35C88DD1A9110D5D3BA2A9602A5421E3");
}
@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
title = (TextView) findViewById(R.id.radioTitle);
title.setText(AllConstant.stationName + "");
radioImage = (ImageView) findViewById(R.id.radioImagePlaying);
if (AllConstant.imageUrl.length() == 0) {
radioImage.setImageBitmap(defaultBitmap);
} else {
downloader.download(AllConstant.imageUrl.replaceAll(" ", "%20"),
radioImage);
}
playSongNow();
}
public void goBackToInfoPopup(View v) {
chooseSharingOption();
}
protected void chooseSharingOption() {
// TODO Auto-generated method stub
final Dialog d = new Dialog(RadioApp.this);
d.setTitle("Info:");
d.setContentView(R.layout.infopopup);
final Button cancel = (Button) d
.findViewById(R.id.infodialoguebtncancle);
cancel.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
d.cancel();
}
});
d.show();
}
private final Runnable mPendingLauncherRunnable = new Runnable() {
@Override
public void run() {
/*
*
* play radio now
*/
playSongNow();
}
};
@Override
protected void onDestroy() {
// This informs other applications that access media on the SD card that
// our audio file no longer exists.
super.onDestroy();
}
@Override
protected void onRestart() {
RadioApp.inBackground = false;
MyService.stopNotification();
super.onRestart();
}
@Override
protected void onStop() {
if (!isFinishing()) {
RadioApp.inBackground = true;
MyService.startNotification();
}
super.onStop();
}
// @Override
// protected void onResume() {
// // TODO Auto-generated method stub
//
// /*
// *
// * refresh add
// */
//
// // loadWebView();
//
// super.onResume();
//
// }
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.playButton:
playSongNow();
break;
}
}
private void playSongNow() {
// TODO Auto-generated method stub
if (MyService.getService() == null) {
RadioApp.outputView.setText("No service available!");
Log.w(RadioApp.MHYH_RADIO_LOG_TAG, "Nagare service is NULL");
return;
}
try {
final int state = MyService.getService().state();
if (state == NagareService.STOPPED && !inCall) {
MyService.getService().download(AllConstant.radioURL.trim());
Log.e("current url is ", AllConstant.radioURL);
Log.e("Search Image : ",
AllConstant.imageUrl);
} else if (state == NagareService.STOPPED && inCall) {
handleNagareErrors("inCall");
} else {
MyService.getService().stop();
}
} catch (final RemoteException e) {
RadioApp.outputView.setText("Error connecting to Nagare service: "
+ e.toString() + "\n");
Log.e(RadioApp.MHYH_RADIO_LOG_TAG,
"Caught RemoteException: " + e.getMessage());
}
}
/*********************************************************************************************
*** TELEPHONY ***
*********************************************************************************************/
private class RadioPhoneStateListener extends PhoneStateListener {
@Override
public void onCallStateChanged(int state, String incomingNumber) {
super.onCallStateChanged(state, incomingNumber);
switch (state) {
case TelephonyManager.CALL_STATE_IDLE:
inCall = false;
try {
if (MyService.getService() != null && RadioApp.wasPlaying) {
Log.e("current url is ", ALLURL.selectedUrl);
MyService.getService().download(
ALLURL.selectedUrl.trim());
}
} catch (final RemoteException e) {
Log.e(RadioApp.MHYH_RADIO_LOG_TAG,
"Caught RemoteException: " + e.getMessage());
} catch (final Exception e) {
Log.e(RadioApp.MHYH_RADIO_LOG_TAG,
"Caught RemoteException: " + e.getMessage());
}
break;
case TelephonyManager.CALL_STATE_OFFHOOK:
case TelephonyManager.CALL_STATE_RINGING:
try {
if (!inCall) {
if (MyService.getService() != null) {
if (MyService.getService().state() != NagareService.STOPPED) {
RadioApp.wasPlaying = true;
} else {
RadioApp.wasPlaying = false;
}
}
}
inCall = true;
} catch (final RemoteException e1) {
Log.e(RadioApp.MHYH_RADIO_LOG_TAG,
"Caught RemoteException: " + e1.getMessage());
}
try {
if (MyService.getService() != null) {
MyService.getService().stop();
}
} catch (final RemoteException e2) {
Log.e(RadioApp.MHYH_RADIO_LOG_TAG,
"Caught RemoteException: " + e2.getMessage());
}
break;
default:
Log.w(RadioApp.MHYH_RADIO_LOG_TAG,
"Found un-handled call state: " + state);
}
}
}
/*********************************************************************************************
*** AUDIO ***
*********************************************************************************************/
@Override
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {
audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, progress,
AudioManager.FLAG_SHOW_UI);
// if (progress == 0) {
// volumeImageView
// .setImageResource(android.R.drawable.ic_lock_silent_mode);
// } else {
// volumeImageView
// .setImageResource(android.R.drawable.ic_lock_silent_mode_off);
// }
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
@Override
public void onDrawerOpened() {
imageView
.setImageBitmap(rotateImage(android.R.drawable.ic_menu_more, 0));
}
@Override
public void onDrawerClosed() {
imageView.setImageBitmap(rotateImage(android.R.drawable.ic_menu_more,
180));
}
/*********************************************************************************************
*** MENUS ***
*********************************************************************************************/
// @Override
// public boolean onCreateOptionsMenu(Menu menu) {
// MenuInflater inflater = getMenuInflater();
// inflater.inflate(R.menu.main_menu, menu);
// return true;
// }
//
// @Override
// public boolean onOptionsItemSelected(MenuItem item) {
// switch (item.getItemId()) {
// case R.id.ExitMenuItem:
// onDestroy();
// System.exit(0);
// return true;
// /*
// * case R.id.SettingsMenuItem: Intent i = new Intent(RadioApp.this,
// * Preferences.class); startActivity(i); return true;
// */
// default:
// return super.onOptionsItemSelected(item);
// }
// }
/*********************************************************************************************
*** UTILITIES ***
*********************************************************************************************/
private Bitmap rotateImage(int id, float degrees) {
final Bitmap bitmap = BitmapFactory.decodeResource(getResources(), id);
final Matrix mat = new Matrix();
mat.postRotate(degrees);
return Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(),
bitmap.getHeight(), mat, true);
}
/*
* back button (non-Javadoc)
*
* @see android.app.Activity#onKeyDown(int, android.view.KeyEvent)
*/
public void goBack(View v) {
RadioApp.this.finish();
//
// final Intent aaa = new Intent(RadioApp.this, GPRActivity.class);
// aaa.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
// startActivity(aaa);
}
//
// /*
// * open Facebook
// */
//
// public void openFB(View v) {
// openURL(ALLURL.URLfacebook.trim());
//
// }
//
// /*
// * open twitter
// */
//
// public void openTwitter(View v) {
// openURL(ALLURL.URLtwitter.trim());
//
// }
@Override
public boolean onKeyDown(final int keyCode, final KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_VOLUME_UP) {
final int index = volumeSeekBar.getProgress();
volumeSeekBar.setProgress(index + 1);
return true;
} else if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN) {
final int index = volumeSeekBar.getProgress();
volumeSeekBar.setProgress(index - 1);
return true;
}
else if (keyCode == KeyEvent.KEYCODE_BACK) {
// final Intent aaa = new Intent(con, SecondScreenActivity.class);
onStopRecording();
return true;
}
return super.onKeyDown(keyCode, event);
// return false;
}
public void onStopRecording() {
final CharSequence[] items = { "Stay in app.", "Exit." };
final AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Exit app?");
builder.setItems(items, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int item) {
switch (item) {
case 0:
return;
case 1:
RadioApp.this.finish();
break;
default:
return;
}
// Toast.makeText(getApplicationContext(), items[item],
// Toast.LENGTH_SHORT).show();
}
});
builder.show();
builder.create();
}
public void openURL(String url) {
final Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
startActivity(intent);
}
/*********************************************************************************************
*** Nagare Serivce ***
*********************************************************************************************/
private final Runnable runRefresh = new Runnable() {
@Override
public void run() {
refresh();
handler.postDelayed(this, 1000);
}
};
public void refresh() {
if (MyService.getService() == null) {
return;
}
try {
final int state = MyService.getService().state();
if (state == NagareService.STOPPED) {
playButton.setImageResource(R.drawable.playbutton);
previousPlaying = nowPlaying;
nowPlaying = "No show information available";
RadioApp.outputView.setText(nowPlaying);
if (!MyService.getService().errors().equals("")) {
final String errors = MyService.getService().errors();
handleNagareErrors(errors);
}
} else {
playButton.setImageResource(R.drawable.stopbutton);
if (MyService.getService().errors().equals("")) {
previousPlaying = nowPlaying;
nowPlaying = "Now playing: "
+ MyService.getService().show_name();
RadioApp.outputView.setText(nowPlaying);
} else {
previousPlaying = nowPlaying;
nowPlaying = "No information available";
RadioApp.outputView.setText(nowPlaying);
final String errors = MyService.getService().errors();
handleNagareErrors(errors);
MyService.getService().stop();
}
}
if (MyService.notification != null
&& !nowPlaying.equals(previousPlaying)
&& RadioApp.inBackground) {
MyService.startNotification();
}
} catch (final RemoteException e) {
Log.e(RadioApp.MHYH_RADIO_LOG_TAG,
"Caught RemoteException: " + e.getMessage());
}
}
private void handleNagareErrors(String errors) {
/*
* cancel timer
*/
try {
handler.removeCallbacks(runRefresh);
} catch (final Exception e) {
// TODO: handle exception
}
}
它在 2.1 或 2.3+ 版本中安静地工作。但是当我想用 2.2+ htc android 设备进行测试时，它会显示以下错误。
W/dalvikvm(9704): threadid=1: thread exiting with uncaught exception (group=0x40028a00)
E/AndroidRuntime(9704): java.lang.RuntimeException: Unable to resume activity {com.droidbd.newradio/com.newradio.android.RadioApp}: java.lang.NullPointerException
E/AndroidRuntime(9704): at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3325) Caused by Java null pointer exception.
然后，当我在 logcat 中单击错误选项时，它会以这种方法带走我。
@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
title = (TextView) findViewById(R.id.radioTitle);
title.setText(AllConstant.stationName + "");
radioImage = (ImageView) findViewById(R.id.radioImagePlaying);
if (AllConstant.imageUrl.length() == 0) {
radioImage.setImageBitmap(defaultBitmap);
} else {
downloader.download(AllConstant.imageUrl.replaceAll(" ", "%20"),
radioImage);
}
playSongNow();
}