¡@
2014/10/16 ¤W¤È 08:24:02
android Programming Glossary: signalsHow can I catch SIGSEGV (segmentation fault) and get a stack trace under JNI on Android? http://stackoverflow.com/questions/1083154/how-can-i-catch-sigsegv-segmentation-fault-and-get-a-stack-trace-under-jni-on but I see no such library for Android Dalvik. android jni signals android ndk sigsegv share improve this question Edit From.. can see on github . Here's how Use sigaction to catch the signals and store the old handlers. android.c 570 Time passes a segfault..
How to track position of an Android device in a building? http://stackoverflow.com/questions/11279946/how-to-track-position-of-an-android-device-in-a-building a signal strength map in advance and then based on the signals you receive look up your location on the map. Motion sensors..
Android: How to monitor WiFi signal strength http://stackoverflow.com/questions/1206891/android-how-to-monitor-wifi-signal-strength connection but I do know I got plenty of results Wi Fi signals change frequently and quickly. I suppose for monitoring a single..
How to get cell service signal strength in Android? http://stackoverflow.com/questions/1967136/how-to-get-cell-service-signal-strength-in-android dBm Integer.toString rss n mainText.setText s android signals rssi share improve this question create a PhoneStateListener..
Perceptual similarity between two audio sequences http://stackoverflow.com/questions/3175774/perceptual-similarity-between-two-audio-sequences thinking to extract a couple of features from the audio signals and then do a Euclidian distance or cosine similarity or something..
Get Latitude and Longitude without inserting Sim Card and Start/Stop Gps from Application http://stackoverflow.com/questions/4375913/get-latitude-and-longitude-without-inserting-sim-card-and-start-stop-gps-from-ap in the phone's settings check that you are not indoors signals from satellites 20 000 km above do not like roofs and walls..
using serial port RS-232 in android? http://stackoverflow.com/questions/4621580/using-serial-port-rs-232-in-android serial port RS 232 in android I want to send signals via serial port using the JavaComm API classes on an Android..
Android 2.3 Visualizer - Trouble understanding getFft() http://stackoverflow.com/questions/4720512/android-2-3-visualizer-trouble-understanding-getfft they are equal because of the periodicity. For real valued signals like the ones you have in audio processing the negative frequency.. only one side of the spectrum is used when analyzing real signals. Another important point is the significance of 0.5 Fs which..
Android app restarts automatically after a crash http://stackoverflow.com/questions/7245550/android-app-restarts-automatically-after-a-crash native crash One of the answers suggested 'handling crash signals'. I'd be grateful for any links on how it can be done at an.. ndk share improve this question Try to handle crash signals SIGSEGV etc. and send kill to yourself in signal handler. This..
http://stackoverflow.com/questions/7502340/how-do-task-killers-work the KILL_BACKGROUND_PROCESSES permission. This permission signals to the OS that an app has been approved by the user as a task..
Android AsyncTask and SQLite DB instance http://stackoverflow.com/questions/7514021/android-asynctask-and-sqlite-db-instance you should keep in mind that cancelling the AsyncTask just signals the task to be cancelled and you need to check isCancelled in..
Android: Manipulating voice in phone calls http://stackoverflow.com/questions/9671914/android-manipulating-voice-in-phone-calls call What kind of APIs are involved Thanks a lot android signals call microphone share improve this question The best solution..
How can I catch SIGSEGV (segmentation fault) and get a stack trace under JNI on Android? http://stackoverflow.com/questions/1083154/how-can-i-catch-sigsegv-segmentation-fault-and-get-a-stack-trace-under-jni-on Android that would solve the catching part of my question but I see no such library for Android Dalvik. android jni signals android ndk sigsegv share improve this question Edit From Jelly Bean onwards you can't get the stack trace because READ_LOGS.. too exotic and have released code using it which you can see on github . Here's how Use sigaction to catch the signals and store the old handlers. android.c 570 Time passes a segfault happens. In the signal handler call up to JNI one last..
How to track position of an Android device in a building? http://stackoverflow.com/questions/11279946/how-to-track-position-of-an-android-device-in-a-building walls and floors. You'll need to survey the building and make a signal strength map in advance and then based on the signals you receive look up your location on the map. Motion sensors are also not precise enough and compass if you are inside a..
Android: How to monitor WiFi signal strength http://stackoverflow.com/questions/1206891/android-how-to-monitor-wifi-signal-strength if my scanning code can be modified to just check the current connection but I do know I got plenty of results Wi Fi signals change frequently and quickly. I suppose for monitoring a single connection you can also just filter the scan results and..
How to get cell service signal strength in Android? http://stackoverflow.com/questions/1967136/how-to-get-cell-service-signal-strength-in-android 113 2 nci.getRssi s Cell ID Integer.toString cid Signal Power dBm Integer.toString rss n mainText.setText s android signals rssi share improve this question create a PhoneStateListener and handle the onSignalStrengthChanged callback. When your..
Perceptual similarity between two audio sequences http://stackoverflow.com/questions/3175774/perceptual-similarity-between-two-audio-sequences problem. What would be the best way to approach it I was thinking to extract a couple of features from the audio signals and then do a Euclidian distance or cosine similarity or something like that on those features. What kind of features would..
Get Latitude and Longitude without inserting Sim Card and Start/Stop Gps from Application http://stackoverflow.com/questions/4375913/get-latitude-and-longitude-without-inserting-sim-card-and-start-stop-gps-from-ap manifest's permissions check that GPS satellites are enabled in the phone's settings check that you are not indoors signals from satellites 20 000 km above do not like roofs and walls Then start your app and wait there can be a few minutes before..
using serial port RS-232 in android? http://stackoverflow.com/questions/4621580/using-serial-port-rs-232-in-android serial port RS 232 in android I want to send signals via serial port using the JavaComm API classes on an Android device and here is how I imagine it 1 the Android device would..
Android 2.3 Visualizer - Trouble understanding getFft() http://stackoverflow.com/questions/4720512/android-2-3-visualizer-trouble-understanding-getfft by shifting the FFT output from 0.5 Fs Fs to 0.5 Fs 0 since they are equal because of the periodicity. For real valued signals like the ones you have in audio processing the negative frequency output will be a mirror image of the positive frequencies... image of the positive frequencies. Because of this often only one side of the spectrum is used when analyzing real signals. Another important point is the significance of 0.5 Fs which is known as the Nyquist Frequency . A signal can only accurately..
Android app restarts automatically after a crash http://stackoverflow.com/questions/7245550/android-app-restarts-automatically-after-a-crash is Is there something similar to a callback if there is a native crash One of the answers suggested 'handling crash signals'. I'd be grateful for any links on how it can be done at an application or module level. As it stands currently if there.. in logcat so no debugging is possible. android android ndk share improve this question Try to handle crash signals SIGSEGV etc. and send kill to yourself in signal handler. This trick helps me. Example #include signal.h #include unistd.h..
http://stackoverflow.com/questions/7502340/how-do-task-killers-work UID of the process because it requires the user to accept the KILL_BACKGROUND_PROCESSES permission. This permission signals to the OS that an app has been approved by the user as a task killer . When a task killer wants to kill an app it tells..
Android AsyncTask and SQLite DB instance http://stackoverflow.com/questions/7514021/android-asynctask-and-sqlite-db-instance that you cancel the AsyncTask before closing the DB. But you should keep in mind that cancelling the AsyncTask just signals the task to be cancelled and you need to check isCancelled in doInBackground and do the needful to stop DB operations. Before..
Android: Manipulating voice in phone calls http://stackoverflow.com/questions/9671914/android-manipulating-voice-in-phone-calls own audio stream Aren't there apps which add noises during a call What kind of APIs are involved Thanks a lot android signals call microphone share improve this question The best solution would be to do this on a native call. This is not possible...
|