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2014/10/16 ¤W¤È 08:20:47
android Programming Glossary: onkeyuphttp://stackoverflow.com/questions/12950215/onkeydown-and-onkeylongpress we press volume button for short time and release . So onKeyUp is the one which will help us detect short presses. package.. super.onKeyDown keyCode event @Override public boolean onKeyUp int keyCode KeyEvent event if keyCode KeyEvent.KEYCODE_VOLUME_DOWN.. Short flag true flag2 false return true return super.onKeyUp keyCode event Logcat for all long presses No short press detected..
Android: EditText Validation with TextWatcher and .setError() http://stackoverflow.com/questions/13347134/android-edittext-validation-with-textwatcher-and-seterror this question You should be able to also override the onKeyUp method http developer.android.com reference android view KeyEvent.Callback.html..
android start user defined activity on search button pressed @ handset http://stackoverflow.com/questions/1912947/android-start-user-defined-activity-on-search-button-pressed-handset search button on the handset @Override public boolean onKeyUp int keyCode KeyEvent event if keyCode KeyEvent.KEYCODE_SEARCH.. KeywordSearch.class return false else return super.onKeyUp keyCode event But here are few issues with it please look at..
http://stackoverflow.com/questions/2261914/catch-keypress-with-android return true return false You could also ta a look at onKeyUp . Resource http developer.android.com reference android view..
Volume Control in android application http://stackoverflow.com/questions/2539264/volume-control-in-android-application Essentially the answer is don't override the onKeyDown and onKeyUp buttons. It's much better to simply use this one line setVolumeControlStream..
http://stackoverflow.com/questions/2563897/extending-adapterview is called within the handling of the onSingleTapUp or onKeyUp events. If you want to use that you have to detect when a user..
Taking over the volume key on Android http://stackoverflow.com/questions/3220556/taking-over-the-volume-key-on-android mLamp.moveForward return false return true public boolean onKeyUp int keyCode KeyEvent event Log.v TAG event.toString if keyCode..
Android - onBackPressed() not working http://stackoverflow.com/questions/3558385/android-onbackpressed-not-working back button share improve this question Are you using onKeyUp Use just onKeyDown in Android 1.x or onBackPressed in Android..
How to hook into the Power button in Android? http://stackoverflow.com/questions/3703071/how-to-hook-into-the-power-button-in-android before onKeyLongPress does so you may want to trigger on onKeyUp instead or other logic to prevent acting upon a series of onKeyDown..
Android Development: How To Use onKeyUp? http://stackoverflow.com/questions/3741147/android-development-how-to-use-onkeyup Development How To Use onKeyUp I'm new to Android development and I can't seem to find a good.. and I can't seem to find a good guide on how to use an onKeyUp listener. In my app I have a big EditText when someone presses.. in that EditText . I don't know how I'd use the onKeyUp. Could someone please show me how java android onkeyup share..
How to Block the Dial, Home, Back and End Call button on Android http://stackoverflow.com/questions/3777596/how-to-block-the-dial-home-back-and-end-call-button-on-android framework moved the action activation from onKeyDown to onKeyUp . So you'll also need to implement the blocking in the onKeyUp.. . So you'll also need to implement the blocking in the onKeyUp handler not just the onKeyDown handler. It is possible to block..
Can I use the soft keyboard without an EditText? http://stackoverflow.com/questions/4579544/can-i-use-the-soft-keyboard-without-an-edittext it even possible to display the soft keyboard and then use onKeyUp onKeyDown without focusing on an EditText Right now the only..
Difference between onKey(), OnKeyDown() and dispatchKeyEvent() methods provided by Android? http://stackoverflow.com/questions/7846050/difference-between-onkey-onkeydown-and-dispatchkeyevent-methods-provided
http://stackoverflow.com/questions/12950215/onkeydown-and-onkeylongpress with it. The key is to use flags. Short press is a press where we press volume button for short time and release . So onKeyUp is the one which will help us detect short presses. package com.example.demo import android.app.Activity import android.os.Bundle.. flag false else flag true flag2 false return true return super.onKeyDown keyCode event @Override public boolean onKeyUp int keyCode KeyEvent event if keyCode KeyEvent.KEYCODE_VOLUME_DOWN event.startTracking if flag Log.d Test Short flag.. event.startTracking if flag Log.d Test Short flag true flag2 false return true return super.onKeyUp keyCode event Logcat for all long presses No short press detected 10 18 02 06 15.369 D Test 16834 Long press 10 18 02 06..
Android: EditText Validation with TextWatcher and .setError() http://stackoverflow.com/questions/13347134/android-edittext-validation-with-textwatcher-and-seterror in this case android validation edittext share improve this question You should be able to also override the onKeyUp method http developer.android.com reference android view KeyEvent.Callback.html . In there check to see if the key pressed..
android start user defined activity on search button pressed @ handset http://stackoverflow.com/questions/1912947/android-start-user-defined-activity-on-search-button-pressed-handset I am using following code to start activity when user pressing search button on the handset @Override public boolean onKeyUp int keyCode KeyEvent event if keyCode KeyEvent.KEYCODE_SEARCH Util.startActivity ReviewsDetail.this KeywordSearch.class.. KeyEvent.KEYCODE_SEARCH Util.startActivity ReviewsDetail.this KeywordSearch.class return false else return super.onKeyUp keyCode event But here are few issues with it please look at the following image. When press search button it first show..
http://stackoverflow.com/questions/2261914/catch-keypress-with-android Sample for handling the Menu button globally return true return false You could also ta a look at onKeyUp . Resource http developer.android.com reference android view View.html And here you can see a list with all KeyEvents share..
Volume Control in android application http://stackoverflow.com/questions/2539264/volume-control-in-android-application question from a long time ago that asked the same thing. Essentially the answer is don't override the onKeyDown and onKeyUp buttons. It's much better to simply use this one line setVolumeControlStream AudioManager.STREAM_MUSIC in your onCreate..
http://stackoverflow.com/questions/2563897/extending-adapterview of the Gallery for example you'll see that the performItemClick is called within the handling of the onSingleTapUp or onKeyUp events. If you want to use that you have to detect when a user clicks somewhere and call performItemClick on your own. ..
Taking over the volume key on Android http://stackoverflow.com/questions/3220556/taking-over-the-volume-key-on-android return false else if keyCode KeyEvent.KEYCODE_VOLUME_UP mLamp.moveForward return false return true public boolean onKeyUp int keyCode KeyEvent event Log.v TAG event.toString if keyCode KeyEvent.KEYCODE_VOLUME_DOWN return false else if keyCode..
Android - onBackPressed() not working http://stackoverflow.com/questions/3558385/android-onbackpressed-not-working
How to hook into the Power button in Android? http://stackoverflow.com/questions/3703071/how-to-hook-into-the-power-button-in-android It is worth noting that onKeyDown will fire multiple times before onKeyLongPress does so you may want to trigger on onKeyUp instead or other logic to prevent acting upon a series of onKeyDown calls when the user is really holding it down. I think..
Android Development: How To Use onKeyUp? http://stackoverflow.com/questions/3741147/android-development-how-to-use-onkeyup Development How To Use onKeyUp I'm new to Android development and I can't seem to find a good guide on how to use an onKeyUp listener. In my app I have.. Development How To Use onKeyUp I'm new to Android development and I can't seem to find a good guide on how to use an onKeyUp listener. In my app I have a big EditText when someone presses and releases a key in that EditText I want to call a function.. I want to call a function that will perform regular expressions in that EditText . I don't know how I'd use the onKeyUp. Could someone please show me how java android onkeyup share improve this question The very right way is to use TextWatcher..
How to Block the Dial, Home, Back and End Call button on Android http://stackoverflow.com/questions/3777596/how-to-block-the-dial-home-back-and-end-call-button-on-android same issue . Starting from Android 1.5 and later the Android framework moved the action activation from onKeyDown to onKeyUp . So you'll also need to implement the blocking in the onKeyUp handler not just the onKeyDown handler. It is possible to.. framework moved the action activation from onKeyDown to onKeyUp . So you'll also need to implement the blocking in the onKeyUp handler not just the onKeyDown handler. It is possible to block the KeyEvent.KEYCODE_CALL button using this technique but..
Can I use the soft keyboard without an EditText? http://stackoverflow.com/questions/4579544/can-i-use-the-soft-keyboard-without-an-edittext No luck on any of these. Is it even possible to display the soft keyboard and then use onKeyUp onKeyDown without focusing on an EditText Right now the only way I can see is to approach this is to create my own implementation..
Difference between onKey(), OnKeyDown() and dispatchKeyEvent() methods provided by Android? http://stackoverflow.com/questions/7846050/difference-between-onkey-onkeydown-and-dispatchkeyevent-methods-provided
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