在这里需要一些帮助，我正在尝试创建一个使用麦克风来收听音频峰值的服务。此服务应在后台运行，并在存在峰值时使用频率信息更新UI。目前，该应用程序启动，然后是FC，因为它的内存耗尽。我已经尝试过调试并跟踪线程，但我是新手，似乎无法解读我做错了什么。
这是我的活动：
public class RTAactivity extends Activity {
private static final String TAG = "RtaTest";
private Intent intent;
@Override
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.rta_view);
intent = new Intent(this, AnalyzeService.class);
}
private BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
android.os.Debug.waitForDebugger(); // check logcat
updateUI(intent);
}
};
@Override
public void onResume() {
super.onResume();
startService(intent);
registerReceiver(broadcastReceiver, new IntentFilter(AnalyzeService.ANALYZE_ACTION));
}
@Override
public void onPause() {
super.onPause();
unregisterReceiver(broadcastReceiver);
stopService(intent);
}
private void updateUI(Intent intent) {
String freq = intent.getStringExtra("freq");
String dB = intent.getStringExtra("dB");
Log.d(TAG, freq);
Log.d(TAG, dB);
TextView TVfreq = (TextView) findViewById(R.id.tv_freq);
TextView decibels = (TextView) findViewById(R.id.tv_decibels);
TVfreq.setText(freq);
decibels.setText(dB);
}
}
这是服务：
public class AnalyzeService extends Service {
private static final String TAG = "AnalyzerService";
public static final String ANALYZE_ACTION = "com.kjacksonmusic.glassrta.displayevent";
private final Handler handler = new Handler();
Intent intent;
@Override
public void onCreate() {
super.onCreate();
intent = new Intent(ANALYZE_ACTION);
}
@Override
public void onStart(Intent intent, int startId) {
handler.removeCallbacks(RunOnUI); //sendUpdatestoUI
handler.postDelayed(RunOnUI, 500); // 0.5 second
}
private Runnable RunOnUI = new Runnable() {
public void run() {
//android.os.Debug.waitForDebugger(); // check logcat
DisplayAudioInfo();
handler.postDelayed(this, 1000); // 1 seconds
}
};
private void DisplayAudioInfo() {
Log.d(TAG, "entered DisplayAudioInfo");
int frequency;
AudioRecord recorder;
boolean recording;
int numCrossing,p;
short audioData[];
int bufferSize = AudioRecord.getMinBufferSize(8000,AudioFormat.CHANNEL_CONFIGURATION_MONO,
AudioFormat.ENCODING_PCM_16BIT)*3; //get the buffer size to use with this audio record
recorder = new AudioRecord (AudioSource.MIC,8000,AudioFormat.CHANNEL_CONFIGURATION_MONO,
AudioFormat.ENCODING_PCM_16BIT,bufferSize); //instantiate the AudioRecorder
recording=true; //variable to use start or stop recording
audioData = new short [bufferSize]; //short array that pcm data is put into.
while (recording) { //loop while recording is needed
if (recorder.getState()==android.media.AudioRecord.STATE_INITIALIZED) // check to see if the recorder has initialized yet.
if (recorder.getRecordingState()==android.media.AudioRecord.RECORDSTATE_STOPPED)
recorder.startRecording(); //check to see if the Recorder has stopped or is not recording, and make it record.
else {
recorder.read(audioData,0,bufferSize); //read the PCM audio data into the audioData array
//Now we need to decode the PCM data using the Zero Crossings Method
numCrossing=0; //initialize your number of zero crossings to 0
for (p=0;p<1000;p+=4) {
if (audioData[p]>0 && audioData[p+1]<=0) numCrossing++;
if (audioData[p]<0 && audioData[p+1]>=0) numCrossing++;
if (audioData[p+1]>0 && audioData[p+2]<=0) numCrossing++;
if (audioData[p+1]<0 && audioData[p+2]>=0) numCrossing++;
if (audioData[p+2]>0 && audioData[p+3]<=0) numCrossing++;
if (audioData[p+2]<0 && audioData[p+3]>=0) numCrossing++;
if (audioData[p+3]>0 && audioData[p+4]<=0) numCrossing++;
if (audioData[p+3]<0 && audioData[p+4]>=0) numCrossing++;
}//for p
for (p=(bufferSize/4)*4;p<bufferSize-1;p++) {
if (audioData[p]>0 && audioData[p+1]<=0) numCrossing++;
if (audioData[p]<0 && audioData[p+1]>=0) numCrossing++;
}
frequency=numCrossing*4;
intent.putExtra("freq", frequency);
intent.putExtra("dB", 100); ///place holder for now.
sendBroadcast(intent);
}//else recorder started
} //while recording
if (recorder.getState()==android.media.AudioRecord.RECORDSTATE_RECORDING) recorder.stop(); //stop the recorder before ending the thread
recorder.release(); //release the recorders resources
recorder=null; //set the recorder to be garbage collected.
} // run
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onDestroy() {
handler.removeCallbacks(RunOnUI); //sendUpdatesToUI
super.onDestroy();
}
}
LOGCAT OUTPUT：
06-25 21:54:20.380: I/ActivityManager(3122): START u0 {cmp=com.kjacksonmusic.glassrta/.RTAactivity} from pid 21580
06-25 21:54:20.458: W/Resources(3122): Converting to boolean: TypedValue{t=0x3/d=0x208 "res/anim/accelerate_interpolator.xml" a=1 r=0x10a0005}
06-25 21:54:20.607: I/SystemUpdateService(3573): cancelUpdate (empty URL)
06-25 21:54:20.716: I/SystemUpdateService(3573): cancelUpdate (empty URL)
06-25 21:54:20.833: I/ActivityManager(3122): Displayed
com.kjacksonmusic.glassrta/.RTAactivity: +359ms
06-25 21:54:21.107: D/AnalyzerService(21580): entered DisplayAudioInfo
06-25 21:54:35.161: I/PowerManagerService(3122): Going to sleep due to screen timeout...
06-25 21:54:35.442: D/SurfaceFlinger(120): Screen released, type=0 flinger=0xb882c450
06-25 21:54:35.521: I/WindowManager(3122): Screen turned off...
06-25 21:54:35.614: I/HeadGestureManager(3122): Unregistering listener:
com.google.android.glass.server.SystemServerHub$4@20ecfce0 for head gesture: NUDGE
06-25 21:54:35.614: D/HeadGestureContainer(3122): Stopping detector: com.google.android.glass.head.HeadNudgeUpDetector@20ec8be8 name=NUDGE
06-25 21:54:35.622: D/RunnableDetector(3122): run() is exiting!
06-25 21:54:35.622: I/MPL-storeload(3122): mpl state size = 5584
06-25 21:54:35.630: E/MPL-storeload(3122): calData from inv_save_mpl_states, size=2
06-25 21:54:35.630: I/MPL-storeload(3122): cal data size to write = 5584
06-25 21:54:35.630: I/MPL-storeload(3122): Bytes written = 5584
06-25 21:54:35.638: I/HeadGestureManager(3122): Registering listener: com.google.android.glass.server.SystemServerHub$4@20ecfce0 for head gesture: GLOBAL_LOOK_UP
06-25 21:54:35.638: V/GlassInputHub(3122): Cancelling all event sequences.
06-25 21:54:35.638: V/GlassInputHub(3122): Cancelling event sequence: Camera key.
06-25 21:54:35.638: V/GlassInputHub(3122): Cancelling event sequence: Power key.
06-25 21:54:35.638: V/GlassInputHub(3122): Cancelling event sequence: Viewfinder switch.
06-25 21:54:35.638: V/GlassInputHub(3122): Cancelling event sequence: Touchpad.
06-25 21:54:35.708: I/VoiceEngine[20e0026c](3363): Screen is off and current config does not allow screen off.
06-25 21:54:35.724: W/VoiceEngine[20e0026c](3363): Transition to VoiceConfig [] requested, but already in that config.
06-25 21:54:35.817: I/GlassUserEventService[20dd9364](3708): Performance stats: [object: com.google.common.logging.GlassExtensionsNano$GlassUserEventPerformanceStats {
batteryChargeWhenFullUah_: 403000 totalKernelMs_: 62401830 totalBytesSent_: 123808401 bitField0_: 8191 boardTemperatureMilliCentigrade_: 43810 frequencyScalingGovernor_: 0 availableMemoryKb_: 49148 isLowMemory_: false qpassedFractional_: 13445 qpassedInteger_: 16636 reportedSoc_: 95 batteryTemperatureMilliCentigrade_: 28100 batteryStateOfChargeUah_: 380000 totalMemoryKb_: 596116 unknownFieldData: null cachedSize: -1}]
06-25 21:54:36.028: W/ActivityManager(3122): Activity pause timeout for ActivityRecord{20ede224 u0 com.kjacksonmusic.glassrta/.RTAactivity t1}
06-25 21:54:39.560: I/GCM(3573): GCM message com.google.glass.home 0:1403747679192023%0#71a16bb9f9fd7ecd
06-25 21:54:39.622: D/ConnectivityService(3122): reportNetworkCondition(1, 100)
06-25 21:54:39.630: D/ConnectivityService(3122): handleInetConditionChange: net=1, condition=100,mActiveDefaultNetwork=1
06-25 21:54:39.630: D/ConnectivityService(3122): handleInetConditionChange: starting a change hold
06-25 21:54:39.669: V/GCMBroadcastReceiver(3321): onReceive:
com.google.android.c2dm.intent.RECEIVE
06-25 21:54:39.669: V/GCMBroadcastReceiver(3321): GCM IntentService class: com.google.glass.home.GCMIntentService
06-25 21:54:39.669: V/GCMBaseIntentService(3321): Acquiring wakelock
06-25 21:54:39.677: V/GCMBaseIntentService(3321): Intent service name: GCMIntentService-229668747847-712
06-25 21:54:39.685: I/GCMIntentService(3321): Received message: Bundle[{p=timeline_sync, from=229668747847, collapse_key=do_not_collapse}]
06-25 21:54:39.763: V/GCMBaseIntentService(3321): Releasing wakelock
06-25 21:54:39.778: I/SyncHelper(3321): Requesting sync
[authority=com.google.glass.sync.timeline, syncSource=GCM,
extras=Bundle[{ignore_backoff=true}]].
06-25 21:54:39.872: I/TimelineSyncAdapter(3377): Entering onPerformSync [authority= com.google.glass.sync.timeline, extras=Bundle[{sync_priority=0, ignore_backoff=true}]].
06-25 21:54:39.911: I/DownloadSyncHelper(3377): Fetching unsynced items from server.
06-25 21:54:39.950: I/DownloadSyncHelper(3377): Requesting sync
[window=TimelineSyncWindow{startTime=1403747642036001, continuationToken=null}].
06-25 21:54:39.989: I/TimelineItemDatabaseHelper(3377): Getting unsynced items with sync protocols: 0, 1
06-25 21:54:40.067: W/GLSUser(3573): GoogleAccountDataService.getToken()
06-25 21:54:40.130: D/ConnectivityService(3122): handleInetConditionHoldEnd: net=1, condition=100, published condition=100
06-25 21:54:40.130: D/ConnectivityService(3122): sendStickyBroadcast: action=android.net.conn.INET_CONDITION_ACTION
06-25 21:54:40.317: I/EyeGestureService(3122): Retrieving persistent state of detection for gesture DON.
06-25 21:54:40.325: I/DownloadSyncHelper(3377): Received items from server [count=1].
06-25 21:54:40.380: I/TimelineProvider(3377): Overwrote timeline item 8a3d2908-437e-47b7-
b985-5c07a99f3e32 because existing modified time (1403742250447) < new modified time (1403747648937)
06-25 21:54:40.505: I/SyncStats(3377): Download api:582969681302 [numFiles=1, totalBytes=2kB, totalDuration=375ms].
06-25 21:54:40.528: W/ActivityManager(3122): Sleep timeout! Sleeping now.
06-25 21:54:40.911: I/MainTimelineView(3321): New timeline database content loaded; updating views.
06-25 21:54:40.942: I/MainTimelineView(3321): New timeline database content loaded; updating views.
06-25 21:54:46.028: W/ActivityManager(3122): Activity stop timeout for ActivityRecord{20ede224 u0 com.kjacksonmusic.glassrta/.RTAactivity t1}