Android :: Enabling And Disabling Services
Jul 6, 2010
I am new to Android development and have trouble enabling / disabling the wifi & audio services. I get the appropriate manager instance using the getSystemService method. But I don't get any error when enabling wifi using:
wifiMgr.setWifiEnabled(true);
But the wifi is simply not turned on! Similarly I use
mAudio.setRingerMode(AudioManager.RINGER_MODE_SILENT);
or
mAudio.setRingerMode(AudioManager.RINGER_MODE_NORMAL);.....................
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Feb 1, 2010
I have written code to enable and disable various things programatically like Wifi, Ringer modes, Airplane modes. All things that you would see in a power toggle widget. The one that I have not found out how to do is bluetooth. It appears that in SDK level 3 (OS 1.5) there is no pretty bluetooth manager class. Has anyone pinpointed any good source examples on enabling and disabling bluetooth that will also be forwards compatible with users running 2.0 (Droid) / 2.1 (Nexus)? I have found a few partial examples in my google searches that I could not get to actually run.
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Aug 3, 2009
I have an application that has multiple activities with the intent action.MAIN (category LAUNCHER), so that multiple shortcuts appear in the "Applications" list. Is it possible to disable some of these activities at run-time (so that the corresponding shortcuts disappear from the "Applications" list)?
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Feb 3, 2010
We would like to enable or disable widgets via code. When we say "disable" we mean that a widget which is registered in an application should not show up in the list of widgets available to the user when they try to add a widget to their home screen. This question has been asked, unfortunately, many times without answer. There was one response by Dianne Hackborn to a separate widget question which suggested that it was possible to use the package manager to disable widgets.
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Feb 6, 2010
We would like to enable or disable widgets via code. When we say "disable" we mean that a widget which is registered in an application should not show up in the list of widgets available to the user when they try to add a widget to their home screen. This question has been asked, unfortunately, many times without
answer.
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Aug 5, 2010
I have an app which displays a large amount of text for the user to read. I've found that when reading while lying down, I get annoyed that the screen rotates even though my head and the screen are aligned. I do not want to set this to be permanently in portrait mode, so I think this would preclude an approach of setting the android:screenOrientation="portrait" in the manifest. Ideally, I would like to enable/disable automatic orientation changes via a preference page.
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Sep 17, 2010
I asked this a while back and didn't get anything useful. I'm hoping now that Android has advanced a few releases, that there will be more options. Here are the things I'm trying to accomplish: Prompt for a PIN when you uninstall a particular app. This would have been set at install time by the user. Disable certain services (text, phone). What would be even better is if I could be selective about it instead of just turning the radios off. For example:
a. intercept outgoing call, is it to one of a few allowed numbers?, yes
=> allow it, no => deny
b. intercept incoming call, is it from one of a few allowed numbers, yes =>...........................
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Aug 31, 2010
What are C based services and Java based services in Android? What is similarity and dissimilarity between them ? Are C based services available in Android?
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Sep 20, 2010
How do you turn on sync in the emulator. I'm already using Google APIs level 8 and I've already created a Google account. But under "Manage Accounts", my Google account says "Sync is OFF".
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Jun 19, 2009
I've just noticed that launching the Camera and Camcorder (in the emulator) would result in a black screen (instead of the famous moving small boxes), i've looked for why this happening on the net, apparently that the camera is disabled by default when you create an AVD. Decided to create another AVD with the camera enabled and launched it and still getting that black screen. Anyone has any idea how to fix this ?
My problem in the first place is that my application is using the default camera application using intents just like in the following: Intent imageCaptureIntent = new Intent (MediaStore.ACTION_IMAGE_CAPTURE); imageCaptureIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File("/sdcard/imageCaptureIntent.jpg"))); startActivityForResult(imageCaptureIntent, WHATEVER_REQ_CODE); I thought that there's a problem in my intent request but like i said before, running the camera on the emulator itself is the problem. By the way, You can run the "camera preview" in the API demos with no problems, how come!
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Aug 2, 2010
I have facing problem in scrolling webview in vertically, actually I have scroll view with in the layout have defined webview in layout so when I scroll the webview vertically it scroll whole layout,so i want to enable scroll for webview.
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Jul 25, 2010
I like being able to listen to music as I'm falling asleep never having to shut it off later.Is there like some way to enable like a way for my Android phone to shut itself off at like a specific time?
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Aug 18, 2010
I need to enable a MenuItem when a previous screen (Activity) returns. I tried this code:
...
((MenuItem)findViewById(R.id.menu_how)).setEnabled(true);
...
but a null pointer exception is launched. BTW, the menu_how is set to false in xml; and the code is part of onActivityResult(int requestCode, int resultCode, Intent data) call.
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Apr 20, 2010
I have used PreferenceActivity to have preference in my android application. I want one preference say "pref 2" to be enabled when other preference say "pref 1" is not checked and "pref 2" to be disabled when "pref 1" is checked. i.e. exactly opposite of the android: dependency attribute. How can I do that?
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Jan 25, 2009
In one of my applications I am dynamically enabling the GPS system setting based on a user's request. My problem is that I also have a LocationListener which doesn't pick up this change. If the device is restarted or the system settings Activity is brought up the LocationListener kicks in -- the onProviderEnabled() method is called. So.. it seems pretty obvious that I'm not notifying the system correctly of my changes. I have tried sending a broadcast from both the normal context and the application context. I thought this would be fairly straight forward, but it has proven to be rather frustrating. I put together a small test activity to demonstrate my problem.
Here is my test Activity: package com.example;
import android.app.Activity; import android.content.Context;
import android.content.Intent; import android.location.Location;
import android.location.LocationListener; import android.location.LocationManager;
import android.os.Bundle; import android.provider.Settings; import android.util.Log;
public class TestActivity extends Activity {
LocationListener locListener; LocationManager locManager;
@Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);
setContentView(R.layout.test_activity); locListener = new MyLocationListener();
locManager = (LocationManager)getSystemService (Context.LOCATION_SERVICE);
locManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locListener);
if(!locManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
Settings.System.putString(getContentResolver (),
Settings.System.LOCATION_PROVIDERS_ALLOWED, LocationManager.GPS_PROVIDER);
Intent intent = new Intent(Intent.ACTION_PROVIDER_CHANGED);
sendBroadcast(intent); } }
private class MyLocationListener implements LocationListener {
public MyLocationListener() { Log.d("test", "MyLocationListener()");
} public void onLocationChanged(Location loc) {
Log.d("test", loc.getLatitude() + "/" + loc.getLongitude());
} public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub Log.d("test", "*** onProviderDisabled (" + provider + ") ***");
} public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub Log.d("test", "*** onProviderEnabled (" + provider + ") ***");
} public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub Log.d("test", "*** onStatusChanged ***");
Log.d("test", "provider = " + provider + " status = " + status);
} } }
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Mar 14, 2010
Under the 2.1 SDK, is there a way to test for the phone's OS version within the app, and to enable or disable features based on this OS version? In other words, I'd like to do the moral equivalent of this...
if (os_level < 1.6) {// code goes here}
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Aug 30, 2010
I am not seeing WiFi tethering app in my phone. I enabled WiFi in froyo build. But it is not showing tethering app? What do I need to enable the app?
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Sep 2, 2009
I would like to know how to dynamically change the my option menu items status from disable to enabled.at first all my menu items are set to disabled and when click the menu key , they are shown as gray and disabled.when my other task finished, i want to enable all the menu items, change them from gray to dark color from the screen.do you know how can i implement this?
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Mar 20, 2009
All, How can we enable LOG messages in Webkit.
I wanted to enable some debug prints using log utility of Android in Webkit I added the following statements in my code.
#define LOG_TAG "webkit" include <utils/Log.h>
And the following line to test LOGV("Constructor CachedImage.cpp");
I am unable to get the logs. Should I enable with the following define. I even added liblog as one of the shared libraries during compilation.
#define LOG_NDEBUG 0 /* Is this required to get logs? */
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Nov 24, 2010
I know you can set fastScroll for listViews, but currently I would like to use a ListActivity with a simplecursoradapter instead. Is there no way to make such a view fast scroll?
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Jun 29, 2010
I have a very hard time with the slide to answer feature. It frequently takes me 3-5 tries to answer a call. I would much rather be able to touch to answer. I do realize that there's a slim chance of answering calls while in my pocket, but I'd rather that then fight with the phone. Does anyone know of an application for this? I've searched various forums and there are no current threads regarding this.
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Jan 24, 2010
Seems to me that Lock 2.0 is the best Screen Lock I've found. Only Issue is, even with the security code enabled, all one has to do is power on/off the phone and your in with no need for the code. What I am looking for is a locking app that doesn't get disabled when powering the phone off/on. Looking for something secure much like every BB has where no matter what you do, to proceed into the phone you need to type in the Lock Code.
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Jul 30, 2010
In an application I have a Spinner that has tens of items.When the user taps on the spinner, a popup dialog appears that shows the list of possible selections. However, since there are (sorted) tens of items, I want the user to be able to use the fast-scroll thumb (like fastScrollEnabled attribute on ListView), similar to the one enabled in Contacts application.I tried to get the ListView that is used in that pop-up dialog, but I didn't find any methods to do that.
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Jan 9, 2010
I just recently got an android phone and found that the drag and drop on my site doesn't work! I understand why it wouldn't, but has anyone found a solution to this? I'm using JQuery to implement the D & D...
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Sep 14, 2010
I've been studying the screen support of Android and yes, while it is flexible, I still don't see how you can support a "really large" screen like the Samsung tablet is going to have. I think no matter what you end up with lots of wasted real estate. The problem is the Android doesn't automatically "scale up" your application if you run in compatibility mode - rather, it fits it into a postage stamp instead. Because of this, how can you really make an app that will "never" have some postage stamping at all, unless you use all 9patch drawables and Absolute Layouts? (Well, you could draw the GUI yourself, which is what my Reloop Sequencer does). As an example, my drum machine app, Electrum Drum, has a certain layout for the buttons and pads. Now, on a larger screen, it would be nice to just make all the buttons and pads bigger. I need the same layout relationships between all the elements though. Basically I just want a "scaled" up version of the UI. Maybe I can achieve this with 9patch drawables and relative layouts? The issue is I could certainly make "large" graphical elements (if not use a 9patch drawable) but there is no way for something, for example, to know that hey, I have LOTS of space I can use.
Let's say for example, that you want a completely different layout on a tablet - say you want more buttons, etc, on your layout now. You can't do it because there is no way for the android app to "know" that this "large" screen is actually larger than "large". A Droid X probably reports itself as large, although the screen is only 4.x inches or so, where you would not have room for those extra buttons. This is no where near as large as 7" or 10", even at a pixel density of 170 or 240. I think the default behavior would have been better to scale up images in compatibility mode, and if the dev could provide higher res images then it would use them of course (put them in the large high dpi folders), but I don't see how a layout itself can scale correctly in really large cases like a tablet. We need some better explanation of how to handle these cases. I still don't understand how a normal app is going to be enabled to scale up easily. It would have been easy if Android would have just "magnified" the view, but it doesn't.
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Jun 28, 2010
If I'm someplace that has WiFi am I better off enabling that whenever I can instead of using 3G even if I have the phone in standby or will that use more battery? I might check my email and facebook, etc., maybe every half hour and I'm wondering if I will save battery life by enabling WiFi or will that eat more battery?
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Jun 11, 2010
I have been having typing issues with the HTC keyboard not seeming to support multitouch and I'm almost positive that it didn't i.e. when I'd hit two buttons at the same time only one would register leading to zillions of typos because I suck. Well anyway, I went and downloaded and installed the Skype keyboard, didn't like it, and went back to the HTC keyboard. Now it appears that after the Skype installation multitouch is magically enabled on the HTC keyboard.
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Jun 15, 2010
i have a couple questions, just downloaded adw launcher and i wanna try it, but i don't know how to turn it on, and also how do i disable gtalk and will it affect anything it i do?
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Feb 5, 2012
I have just got CM9 on my Xperia Play and I was just wondering if it was possible to enable the soft keys especially enabling them on when the phone is in portrait. The soft keys from ice cream sandwich for my phone since the menu key doesn't work very well and for some reason I have to push it down very hard to get it too work.
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Nov 20, 2010
User opens app, they press a button and some activity launches. After the button is pressed and the activity is executed, I want to disable the button until the week starts over. Even if they close the app and come back, it should still be disabled unless it has reset.
For example, if they press the button on Monday, they should not be able to do it again until Sunday at 12:00 AM.
No matter what day they initially press the button, they should not be able to press again until the week starts over.
What would be the simplest way to do this in android? Should I have the program store the date and time they initially press, and then calculate the time until reset every time they open the app?
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