In Android I am writing an application in which, I would like to capture an event if in case user doesn't do any activity (tapping/key press). For better context - It is like session timeout.
Basic solution - I can override the key press/tapping event and put one timer which continuously run either as thread or service. In my opinion this is bit heavier solution in terms of resource.
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i am starting to develop Android applications and i would like to know if there are any tips for creating lightweight applications. This is my first attempt to write applications on a mobile platform but i hope that my experience in programming will help.I have in mind the "Better, Faster, Lighter Java" book, but will this be "the" answer to my question? Are there any tips specific for the Android Platform that will allow me to build lightweight applications?
View 2 Replies View RelatedI'm looking for an embeddable webserver for an android project I am working on. ijetty is to big for me, I'm just trying to serve some static content don't need an entire servlet container. Something like http://java.sun.com /javase /6/docs/jre/api/net/httpserver/spec/com/sun would be useful, but probably still overkill for what I need.
View 3 Replies View RelatedMy phone won't detect the bios file on my SDcard. I downloaded the bois, the files named gba_bios.bin, and it's in a folder on the card called "roms". Neither Gameboid or file manager can find the file. But when i hook my phone up to my PC, it's right there where I copied it. anyone have this problem?
View 2 Replies View RelatedWhen apply the white theme, the text views and scrollviews display black background....and its very hard to read the text. The same app works fine on the 1.1 SDK. I am running the application on the Dev Phone (but emulator also have same symptoms)
View 15 Replies View Relatedis there a way to set the weight of a view using API calls? I construct parts of my UI at runtime. The dynamic UI has multiple View. However, I want to set the weight of those view to be non-equal. Any idea on how to do that?
View 6 Replies View RelatedI want to get the key value when user pressed any key and also perform action based on the key pressed in android. e.g. if user pressed 'A' key then I want to get that value, compare, do something.
Uses: Eclipse as IDE
LinearLayout obeys weight and as per documentation weight gives priority to an object. Here is the layout I have: Here you can see that the first textview has a weight of 2, second has a weight of 0, but still the second text view takes up all the space. If I give the first edit view a weight of 0 and second a weight of 2, surprisingly, first edit view gets more space. Isn't this weird, or am I doing something very wrong. I am poor in layouts. <LinearLayout android:id="@+id/LinearLayout01" android:layout_width="fill_parent" android:layout_height="fill_parent"
View 7 Replies View RelatedMy wife and I have droids, however new to droid and she was using calorie counter to do her grocery shopping as it had a scanner function that would tell her how many points the item is while shopping. Calorie counter removed that function and my wife is looking for a replacement. I apologize if i duplicated a prior post.
View 2 Replies View RelatedMy girlfriend recently got the HTC Tattoo (running Android 1.6) and she's having major issues with the alarm on the Clock application. Whenever she sets the alarm to wake up in the morning, it doesnt go off at the desired time. There's no sound or not waking of the screen. The alarm does finally sound when the screen is woken, and this can be 20 minutes or so after the alarm *should* have sounded! It works ok if the alarm is set to go off in 5 minutes time or so, but it seems like Android forgets to ring the alarm until the screen is woken and then does it.Can anyone provide any insight into this issue? I have seen that there are other threads where the alarm doesn't work but they dont cover this behavior.
View 11 Replies View RelatedHow can I catch a phone keypress with the android SDK? I've been looking around for hours without finding anything.For example:
In some cases, I want to catch the message when a user presses the "hang up" button on the phone, and then discard the message before it reaches the OS.
I need to invoke a keypress event in android.
View 2 Replies View RelatedI developed an application to generate keypress. I find out that we can use Instrumentation object to generate. However, when I run the following code, I got these errors.
04-27 16:12:16.720: ERROR/AndroidRuntime(4406):
Caused by: java.lang.RuntimeException: This method can not be called from the main application thread 04-27 16:12:16.720:
ERROR/AndroidRuntime(4406): at android.app.Instrumentation.validateNotAppThread(Instrumentation.java: 1427)
04-27 16:12:16.720: ERROR/AndroidRuntime(4406): at android.app.Instrumentation.sendKeySync(Instrumentation.java:857)
04-27 16:12:16.720: ERROR/AndroidRuntime(4406): at android.app.Instrumentation.sendKeyDownUpSync(Instrumentation.java: 871)
@Override protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub super.onCreate(savedInstanceState);
setContentView(R.layout.main); }
@Override protected void onStart() { // TODO Auto-generated method stub super.onStart();
//press key Instrumentation inst = new Instrumentation();
inst.sendKeyDownUpSync(KeyEvent.KEYCODE_1); }
@Override protected void onStop() { // TODO Auto-generated method stub super.onStop(); }
When I press the only character button a to z to perform some action in android what is key ASCII code for a to z can anybody tell how to do in android?
View 2 Replies View RelatedI am struggling with the done button on the soft keyboard. I can't get the soft keyboard Done keypress to hide the keyboard. From another button, it works perfectly with imm.hideSoftInputFromWindow(editText.getApplicationWindowToken(), 0);
but the onKeyListener does not function the way I want. When I hit the editText, the soft keyboard shows up and its content is cleared from characters. The main.xml:
<EditText android:id="@+id/answer"
android:layout_gravity="center_horizontal" android:textSize="36px"
android:inputType="phone" android:minWidth="60dp" android:maxWidth="60dp" />
The Java file:
private EditText editText;...
editText = (EditText)findViewById(R.id.answer);
editText.setOnClickListener(onKeyboard);
editText.setOnKeyListener(onSoftKeyboardDonePress); ...
// method not working: private View.OnKeyListener onSoftKeyboardDonePress=new View.OnKeyListener() { public boolean onKey(View v, int keyCode, KeyEvent event) {
if (event.getKeyCode() == KeyEvent.FLAG_EDITOR_ACTION) {
// code to hide the soft keyboard
imm = (InputMethodManager) getSystemService( Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(editText.getApplicationWindowToken(), 0); }
return false; } };
private View.OnClickListener onKeyboard=new View.OnClickListener() {
public void onClick(View v) { editText.setText(""); } };
The working method using a button (in the same java file):
private View.OnClickListener onDone=new View.OnClickListener() {
public void onClick(View v) { ....
// code to hide the soft keyboard
imm = (InputMethodManager) getSystemService( Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(editText.getApplicationWindowToken(), 0); } };
When I press key no "9" the keyboard hides.
I have a simple horizontal linear_layout with bunch of image views in it. the trick is that the views have different widths, relative to the size of their parent (the linear layout). I set the layout's weightSum to a 100 and the layout_weight to let's say 10 of one view and 15 of the other, on so on. And it did not work. I also tired using float values setting the weightSum to 1.0 and the layout_weight of the image views to 0.2 and 0.3 and so on. But it didn't work either. I did search this group for any references to the weightSum but found nothing. Any ideas how to handle it?
View 5 Replies View Relatedi know we can use XML to specify layout_weight.(refer to APIdemo LinearLayout9.java) but is there any method to specify it from code?
View 2 Replies View RelatedNew Swype wont let you turn off vibrate on keypress? Just downloaded the newest version, (1.56.30.7625.t100) and the setting is listed, but you cannot press it, it is "Dimmed". I am an official Beta tester, and got my version from them, through E-mail. I didn't steal the .apk
View 2 Replies View RelatedFor some reason, and only on my Dell Vostro 1000 laptop, the Android emulator keeps thinking I have the = key pressed and continually emits a string of "=====" equal signs. This happens no matter what I'm doing in the emulator. It responds to my manual keypresses as well, interspersing them. It happens no matter which version of the Android system I run (2.1, 2.2, etc.) Strangely, it happens even running the Android emulator via a remote desktop session where the remote desktop client is the laptop and the server is another PC running the emulator. If I run the emulator on the other PC locally (not remote desktop,) the emulator functions fine!
This problem didn't occur when I first installed the SDK and as far as I know no other software has been installed since then. I tried clicking the "clear user data" from the emulator launcher and still no effect. I have also tried deleting the SDK directory and reinstalling it, but the effect is still there.
Update: I found another application that exhibits this behavior. ScummVM when opening a dialog to save the game also receives these phantom keypresses. It persists in Windows 7.
I have played around a bit with the xml files for creating layouts and can't explain the behaviour of layout_weight when using it in a LinearLayout that has orientation="vertical"
When creating a layout that is horizontal everything follows the documentation, that a child would get more space if it's has the highest value.
But the following code for vertical orientation, give more space to the item with lowest weight.
CODE:..........
And the question is: Is this a bug or just a feature that maybe need more documentation?
By default, when in DialogPreference you press back button, it mimics that you've pressed NegativeButton. I'd like to override that but can't find an easy way except to recreate DialogPreference from scratch (which at the moment seems like an overkill), because I'd like that PositiveButton set something, NegativeButton to unset something, and back key to leave things as they were (i.e. to not unset something). I've even tried to override showDialog() but: a) its not simple, b) I don't think I should mess too much with internals of OS supplied code like a bunch of private "m" variables.
View 1 Replies View RelatedI have used a bit of Android code to override the "Done" button in my EditText field:
myEditField.setOnEditorActionListener(new TextView.OnEditorActionListener() {
@Override public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
if (actionId == EditorInfo.IME_ACTION_DONE) { mySubroutine();
return true; } return false; } } );
Activating the field calls up the keyboard, and pressing "Done" evaluates mySubroutine() successfully. However, the keyboard no longer goes away when I press "Done". How do I restore this default behavior to the routine?
I am trying to assign relative widths to columns in a ListView that is in a TabHost, using layout_weight as suggested here:Unfortunately, it seems to want to fit all the columns into the space that the button occupies, as opposed to the width of the screen. Or maybe there is another constraint that I do not understand.
View 2 Replies View RelatedAccording to documentaion, FILL_PARENT basically lets the view take up the entire extra space. Weight also dictates how much of the extra space can be taken by the view. What is the difference? For eg: What happens when I use, new LinearLayout.Layout Params(Layout Params.WRAP_CONTENT,LayoutParams.WRAP_CONTENT, 1.0f)
View 1 Replies View RelatedI always read about this funny weight value in the Android documentations. Now I want to try it for the first time but it isn't working at all. As I understand it from the documentations this layout: should create two buttons that are horizontally aligned and share the space equally. The problem is the two buttons don't grow to fill the space. The result is something like this: I would like the buttons to grow and fill the whole line. If both buttons are set to fill parent only the first button is shown and fills the whole line.
View 5 Replies View RelatedFor those people who have held the device, how is the weight distribution? Just from the looks of it, it looks like it would be a tad top heavy because of the hump.
View 23 Replies View RelatedI am wondering if using vibrate on keypress uses battery?
View 3 Replies View Relatedwill enabling vibrate on key press (when you hit a letter or anything it vibrates) drain or use any battery?
View 8 Replies View RelatedThese packages are alternative gapps. These Gapps should improve performance. On top of that all apps are up to date (like YouTube). Ultra Light version will also remove unnecessary preinstalled apps like yaam, DSP Audio Manager and so on (and some more gapps of course).
View 13 Replies View RelatedMy 7 year old, 5year old & 3 & 1/2 year old are able to do terrible things to my phone & computers! I hope I am one of many frustrated & forlorn parents who have great kids that are obviously a rung or 3 up the evolutionary ladder! Perhaps we should start a support group! LMAO I am new to android & so far I love it, so much that you can do on this platform & as i am a lateral thinker it is so much fun being able to get apps that seem to allow my though processes & not miss a beat, what a delight. NOt too impressed with the pattern lock at the moment though but I am hopeful of finding a solution there or admiring my Very expensive paper weight that might have been so much fun!! I am currently very tentative about all the programming stuff but I guess in time & with help from all the learned folk out there I will be able to have the best & most productive tool completely customized for me that I could imagine. Do let me know if I am deluded as it would save me much heart ache, Hope to be educated well here so thanks in advance for your patience & assistance!
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