Do not discharge lithium-ion too deeply. Instead, charge it frequently.Lithium-ion does not have memory problems like nickel-cadmium batteries.No deep discharges are needed for conditioning.I know once the battery bashing starts there will be 1000 suggestions to deep cycle batteries. Android may benefit from a discharge cycle, but I can't find anything authoritative on this yet. Perhaps a developer can help?
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I'm kind of new to android development.I have read from many sources that findViewById() is a "costly" operation. I'm making an application that deals with 5 TextViews to provide different kinds of information (distance, duration, title, description, etc) from a database. I'm using listeners to catch touch/click events and feedbacks a handler. The main function of the handler is to received a "position" in the Cursor where the new information needs to be displayed. I mentioned earlier that findViewById() is a "costly" operation. So, I don't call this method in the handler. Doing so, it will retrieve every time the Views when user touchs/clicks some widget. Is it right to populate the Activity with private members of the Views/Layout it displays? I mean, I don't like it. I don't know why, but seems that I'm populating too much the activity. I'm aware of the android:onClick xml attribute, but in my case I also use long click listeners. So, a piece of onCreate() looks like: And all of those are private members, wihout mention the "cursor.getColumnIndex()" for each. I thought on implementing Handler.Callback and set on the Hanlder.Callback constructor implementer a View array or a View list or something, but I also need this objects later to set other listeners and setups. Is this right? I cannot think another way, as I need the reference to the object, and also the Cursor reference that the handler will move to the "position" provided and update the correspondent View. I will really appreciate either an advice or a useful link/info/doc to read in what concern in this kind of designs. What I do not like is that It looks like imperative programming filling the Activity with "global" variables.
View 6 Replies View RelatedWhat accessories do you experienced users have/recommend?I know there are 2 kinds of cases - hard or soft gel.Which is better (and why).What about the home docking station?Worth it?
View 2 Replies View RelatedI have a service running that grabs the users attention with a notification. What i would like to happen when the user clicks on the notification is for it to launch a dialog box. The "proper" thing to do is to launch an activity in this way, so is there a way to get an activity to launch with out filling the screen? So it looks like a dialog box?
View 5 Replies View RelatedHere's some "snap me" screenshots.Are these all normal applications to be running? p.s. I realize that shoot me was running, kinda obvious
View 1 Replies View RelatedI'm new to Android and just got a Hero a couple weeks ago so I'm searching all the forums (and other Android sites) for useful tips. So far, I'm impressed with the Android OS, the Hero and even like HTC's Sense UI. There are some apps included with the phone that I don't want/need (ex: Sprint TV, Nascar, HTC Widgets, etc.) I'd like to uninstall them but based on what I've read in some posts some apps can't or shouldn't be uninstalled is that correct? If so, which apps? Do I need an uninstaller or does "managing applications" work just as well?I've seen many posts advising the best way to get clean-up your phone (get rid of the bundled bloat, etc.) is to "root" your phone but doesn't that process erase/over-write the HTC-customized version with the "plain vanilla" Android OS? If I root my Hero, won't I lose access to the Sense UI components that I wanted to keep?
View 4 Replies View RelatedI am currently running MoDaCo 2.5, firmware version 1.5. Been busy the past few weeks with work and what not, so I haven't been keeping up to date with the ROM updates. I checked today and found that the latest version is 3.0 and I have been reading up some threads where I read that apps2sd can be done on the phone itself now after updating to the latest ROM. Can some one give me some detailed explanations on the methods of achieving apps2sd. Would I have to partition the SD card prior to updating the ROM, or would it be advisable to do so after the update?
View 12 Replies View RelatedI'm a total newbie to Android (and to Java in general... mostly a PERL/ PHP guy here...), so forgive me if I use the wrong terminology to refer to things... I have been asked by my company to implement an application for Android that allows a user to enter a note at the end of every call. E.g., either they or the other party hangs up, immediately a notes area pops up with a "save" button and if they enter a note, the note is saved with a reference to the call log entry. As I understand it, onCallStateChange() will give a pretty good indicator of a hangup if the state has become Telephony Manager.CALL_STATE_IDLE. I've figured out how to do the UI part, how to save it in a database, etc... My question, however, is about how I implement this "listening" aspect of it. Should I have a service running all the time that has an instance of android.telephony.PhoneStateListener? If so, do I use the onBind or onStart method, and how do I make sure it doesn't go away when memory runs low? Or can I somehow attach the listener to this event, and then terminate? Or is a Broadcast Receiver the way to go?
View 16 Replies View Relatedcan someone please help me? I would like to write a program which uses a service to periodically update a text view on an activity. I do this by having ActivityA with a 2 buttons to start/stop my service. In the service I run a timer which triggers every second. From here I need to have this launch and update a text view on ActivityB which at present is just a counter value.I'm sure there are likely better ways to do this, such as using only one activity, maybe using a thread but the main design consideration is to have the service running even if my activity is destoyed (the counter value would instead go trigger some alarm or file write instead of a text view update). Sorry for rambling. I find the android developer resources offer too many solutions!
View 2 Replies View RelatedI'm new to Android development and am working on a small test project. I have a service, which communicates with an SQLite3 database, and two activities. A main activity which fetches database information via the service and displays it and a second activity which allows me to add data to the database via the service.
Currently, I have a singleton class which implements the ServiceConnection interface and I'm binding this to the service in the the main activity using the bindService function. Because it's a singleton, I can then use this service connection in both the main activity and second activity to work with the database and it all seems to work quite well.
However, I'm all the time aware that the service connection is bound to the main activity and I'm wondering if this is the wrong/bad way to do it? Would I be best off having two service connections, one in each activity, and binding each to the service?
I notice there are a number of apps for dealing with turning off apps that are running in the background and using memory
1. Which is the best task killer app out there?
2. How much memory should you generally as a rule of thumb keep available at anytime?
i don't incur the Debt of a Small country!! Can you offer advice on the best settings/ Option to use to kill all Data! Even if the browser is accidently pressed by your kids wanting to play Angry Birds!!
Is it simply to kill the roaming? Or the Data traffic option? Or would you call the carrier to be doubly sure?Still want to be able to use the Wi-Fi as it's free in the Lobby!! Just checked the prices with Orange for Mexico and soaked my monitor with Tea on the prices quoted!8 per Mg of data!!! Pants down prices!!
I installed Galaxo 1.6.3.2 the other day and GPS performance sucked (im not the only who has noticed this)I decided to go back to the roots. I want your opinion which 1.5 version is most responsive, fastest, least battery consuming qnd gps friendliest. Languages are not important (beside english ofcourse).
View 6 Replies View RelatedI am unsure of the jargon so please bear with me, I am seeking advice on the best way to go about drawing the graphics for an app I am developing. Imagine you are creating a game of checkers, where you can drag/drop one piece at a time to a blank space on the board. When the piece is being moved, it seems to me that you should not need to redraw all of the pieces that are not being moved. Using the LunarLander example, is there a way to store the background image and only draw the piece being moved over it? I have been trying to figure out a way to capture the canvas as an bitmap that is occasionally refreshed.
View 5 Replies View RelatedI have one year of experience in programming. After getting laid off in cuts I managed to get a job in telecommunications planning. I'm good at my new job and don't want to leave it but I miss programming. I'd like to be able to code in my free time (which is about 4 hours every evening 7 days a week.)
I can code pretty well in C#, reasonably well in SQL and poorly in a unix shell.
What sort of job should I get on the side? Would anyone hire me as a free lancer? Should I focus on making apps for phones (android) instead?
I'm rather new to android programming and right now I'm playing with the media store for a personal test project. I've run into a couple double-edge problems..
I need to query the mediastore for a list of all music files, simple enough - but i need to restrict the results to certain folders only. I accomplished this (rather easily) using the SQL-*LIKE- where clauses and all's well on this aspect.
I now need a unique (if this were actually using SQL, I could simply use the DISTINCT modifier and be done with this) list of all artists. Now this is based off the songs in a given path. Therefore I cannot filter the list returned from querying the URI:MediaStore.Audio.Artists.EXTERNAL_CONTENT_URI, and adding in where clauses based off the file path as I did in the first step.
So, what this leaves me with is using my initial query and getting a cursor back then stripping the dupes from the cursor (which is where i am now - too slow, especially with 1000+ songs) - based on a query of artists instead of songs, obviously.
Is is possible to override the actual query that fills the cursor, maybe? As in: override the query and filter how the data is initially put into the cursor (remove recursive entries) and return the proper cursor immediately? Content providers and how they were never built with a distinct function is beyond me, but whatever. Is the returned cursor from a URI query command filled in a manner that can be overridden or not? That's what I'm unclear of at the moment on this. I would like to be able to wrap the getContentResolver().query(xxx..)) command directly to remove the entries on cursor fill, if possible - i do async queries and using a single query statement (well, one for the artist query) would be great.
My other alternative thought is to just preload the data and manipulate my view's data by creating a new cursor based off the preloaded dataset (cursor) - which may be the way to go, and if so - would a cursor be the best way to store this data? Also worried about ram with larger libraries.
Maybe there's simply a way to do a DISTINCT query on the URI - I just do not know. I've seen this question (or the ilk there-of) asked many times with no good answers that were meant for a URI as opposed to a SQL back-end.
I got the Xperia Mini only a week ago, internet has been working fine until yesterday, its unable to connect to my home page or any apps i have on the phone! Even 3G symbol does not come up! Anyone help? I dont know if i accidental touched a wrong setting.
View 2 Replies View Relatedto start with I've gone through the entire notepad tutorial, I'm a professional game programmer who has some extra time. (though most of my time has been in C++, I did take a year or two of Java classes in college, and remember some of it). I'm not sure the site is a good site to ask questions like this.. If someone has a Forum that might be a good place to ask these newbie questions, please feel free to point me in the direction. I've examined a few of the samples, and think I've a grasp of what I want to do. I've a three to four project plan for some Android releases to sharpen my skills, but since this is my first project and I have never really developed for a mobile phone or the android before, I'd like to make sure I have a solid plan.The first project is an example of the license plate game, however I want to do a few things to change it. Heck maybe when I'm done it'll become a bingo style game, with bluetooth connectivity, you never know. The base idea is I want to offer a list of states, with checkboxes next to them. so to do this, I'll be starting with a Linear List layout similar to the note pad example, and then have a row that is only a Checkbox. I can use text and call strike through if it's been checked off. Perhaps offer an option to not show them if they are checked.
But I want the list to be generated from a set of lists. Maybe all of America's states, maybe reasonable American states (no Hawaii, no Alaska) maybe a North American list, (add in Mexico and some Canadian provinces), a European list, who knows. I'd probably have to have a pop up window that lists all of the lists I suppose using a radiogroup of some sort. So then as far as the data, after weighing options I think best solution is to make a database with two fields, "checked" and "name".I figure I can use the menu for most of the user interaction (aside from clicking on stuff we want to check off) with maybe a few context menu items, I understand how to make all of those already so I should be good. The question I have is what is the best way to populate the lists? Should I create raw data, and have different files for all the lists? Or is there some other way to do this? I've seen this done on the searchable dictionary, but I'd like to hear what people who have actually generated the data like this before. In addition is there an easy way to look at the sql database these applications create, or do you have to run searches on them and output the data? Finally any other suggestion or advice? I definitely want to try to get something like this on the market so I can see the full life cycle and see if anyone actually likes it. (luckily there's not a plethora of them already) but I also want a few people to look over my code if they're willing when I'm done to make sure I've done this right or at least not missing any basic mistakes.
I am about to get the Droid and the Eris through Verizon (get one free deal), the Eris is for my wife, separate line joint account. My question is we are coming from the iphone where our calenders and contacts and all were always synced up. Will I have a problem doing this with these two phones or would it be easier if they were both Droids or both Eris?
Thanks
whenever i start this app it crashes after about 5 seconds. I am quite desperate because I couldnt find the error/ mistake yet.
Code:
package de.example.adorassprachausgabe;
import java.util.Locale;
import android.os.Bundle;
import android.app.Activity;
import android.speech.tts.TextToSpeech;
import android.speech.tts.TextToSpeech.OnInitListener;
import android.view.View.OnClickListener;
import android.widget.Button;
[code]....
I have a dialog popup to indicate how long I want an activity to run.Seems simple enough, but its difficult to determine when the activity is really starting.If the user opens the keyboard on a G1 and thereby goes into landscape, that reruns the activities onCreate method.I can't have a static for the class or even create an application class, because I can't determine when the 'application' goes away. Even after destroying the only activity, the application is apparently still alive.Is there a way to determine that onCreate has been called because of the keyboard being extended or landscape mode invoked?
View 3 Replies View RelatedStrange behavior on my Sprint Hero - apps I haven't asked to start, suddenly appear in my Tasklist, after sitting on a charger for extended periods of time... Example: Today, while the phone was sitting on my desk and I had just force-closed a few apps, the Navigation, Calendar and Clock apps all started to run. The phone screen was off, sitting on a table and I had just confirmed that NONE of those apps were running before I turned off the phone.
Is this a bug in the Hero overall, just the SpLint implementation or something with just my phone?
Who else is really annoyed with the fact that when the EVE rings, it starts really low and gets higher?
View 5 Replies View RelatedintentTest.java:
package intentTest.xyz.com;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button
public class intentTest extends Activity {
Button b;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
b = (Button) findViewById(R.id.b);
b.setOnClickListener( new View.OnClickListener() {
public void onClick(View view) {
Intent intent = new Intent(intentTest.this,seond.class );
startActivity(intent);
}});
}}
main.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="First screen"
/>
<Button
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="click"
android:name="@+id/b"
/>
</LinearLayout>
seond.java:
package intentTest.xyz.com;
import android.app.Activity;
import android.os.Bundle;
public class seond extends Activity{
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.second);
} }
second.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="second screen"
/>
manifest.xml:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="intentTest.xyz.com"
android:versionCode="1"
android:versionName="1.0">
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".intentTest"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".seond"></activity>
</application>
</manifest>
I get the following error code:
11-16 01:26:07.156: ERROR/AndroidRuntime(779): Uncaught handler: thread main exiting due to uncaught exception
11-16 01:26:07.166: ERROR/AndroidRuntime(779): java.lang.RuntimeException: Unable to start activity ComponentInfo{intentTest.xyz.com/intentTest.xyz.com.intentTest}: java.lang.NullPointerException
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2401)
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2417)
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
at android.app.ActivityThread.access$2100(ActivityThread.java:116)
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794)
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
at android.os.Handler.dispatchMessage(Handler.java:99)
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
at android.os.Looper.loop(Looper.java:123)
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
at android.app.ActivityThread.main(ActivityThread.java:4203)
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
at java.lang.reflect.Method.invokeNative(Native Method)
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
at java.lang.reflect.Method.invoke(Method.java:521)
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791)
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549)
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
at dalvik.system.NativeStart.main(Native Method)
11-16 01:26:07.166: ERROR/AndroidRuntime(779): Caused by: java.lang.NullPointerException
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
at intentTest.xyz.com.intentTest.onCreate(intentTest.java:18)
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123)
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2364)
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
... 11 more
I switched from an iPhone & love it so far but my only issue is when people call me my ringer is so low at the start then after about 5 seconds goes to the volume I have it set on... I looked all over the settings and theres nothing about ascending ringer checked or anything... this is just buggin' the heck out of me..
View 14 Replies View RelatedFor some reason, the navigation app will just start it self up. I thought maybe I was accidentally touching the shortcut on my home screen so I removed it, but it still happens. I "went along with it" as it asked me to show my gps settings since I have gps disabled. So I enabled it to see if it would bring me to a map, but it just brings me to the default navigation screen. Running 2.2, stock rom, but super user access.
View 4 Replies View RelatedI have a Milestone (DE Version from Amazon) size Christmas and have a annoying problem: Sometimes the Musik Player starts all by itself. Telephone is on standby in my pocket, then for no apperent reason the mp3 player goes off playing.
The same problem was reported here. I had this problem since FW 2.0. It happens maybe one per week, but is really annoying in meetings since the mp3 player app ignores ringer volume settings.
I too found that it happens a lot more if i just pull the audio jack plug to stop playback, but even so it happens from time to time...
I am using WebView in a number of screens in my application, and notice that it takes couple of seconds when starting up for the first time. What can I do to speed it up besides trying to create one in a separate thread beforehand?
View 3 Replies View RelatedI have a number of app's that seem to start and run at random.
I still want these apps on the on phone, so don't want to uninstall, just want to be able to choose when they start up - rather than them starting at random and running in background.
Some of the app's running:
Music
Footprints
Stocks
FM Radio
Juiceplotter
Fake-call-me-Pro
Is there an APP similar to AUTORUNS (which I use on my Windows PC) that lets me choose what programs run at boot?
Every time I connect to the 4g network here in NY, my phone starts to lag horribly. Nothing is as snappy from the home screen scrolling to the keyboard to any apps that require a network connection.
View 11 Replies View Related