In an app with a small number of POJOs and lots of helper methods that operate on them, what's better performance-wise: to make the helper classes singletons or to make the methods static?
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I have some information stored as SharedPreferences. I need to access that information from outsite an Activity (in from a domain model class). So I created a static method in an Activity which I only use to get the shared preferences. This is giving me some problems, since apparently it is not possible to call the method "getSharedPreferences" from a static method. Here's the message eclipse is giving me:
Cannot make a static reference to the non-static method
getSharedPreferences(String, int) from the type ContextWrapper
I tried to work around this by using an Activity instance, like this:
public static SharedPreferences getSharedPreferences () {
Activity act = new Activity();
return act.getSharedPreferences("FILE", 0);
}
This code gives a null point exception. Is there a work-around? Am I going into an android-code-smell by trying to do this?
I am working on an Android project that uses classes and methods from a seperate JAR file I am also creating, and the issue is with a specific util class called XpathUtil that is throwing a VerifyError every time I try calling one of its static methods. Here is how my XpathUtil class looks like:........................
View 1 Replies View RelatedI am writing a program where I have to access some static data, and now I am looking for the best method of how to include them into the project.Reading in the data by parsing an XML is *slow* (even using the SAX parser). 2. Reading the data by parsing a CSV file is faster than loading an XML, but again is too slow. 3. Putting the data into a Java file directly (e.g. by defining an array) fails because Dalvik says it is too large. 4. Reading in the data using serialization is slow. The funny thing here is: It takes a bit longer than loading the XML file. 5. Reading in the data from a SQLite database is the fastest method until now. But a bad workaround is needed: A SQLite DB can not yet be read directly from the resources, but instead has to be copied to the cache or to the SD card - even for read-only access. Right now I am using method 5, but I would really like to use a more simplified and faster solution.
What I found out: Unserialization in Java is *fast* (reading a HashMap with 5000 integers and strings in 79ms on my PC), while the same action on my G1 takes over 13500ms. I know that I can not compare a PC to a mobile device. But still, there seems to be a big difference here. I think that the JRE directly copies the serialized data to RAM, while Dalvik seems to read every object step by step. Is this going to change in the future? And, most interestingly: what do you do to access lots of static information?
I am facing the following problem: I have a big list of street names(~2000 entries), which is stored as a variable. I have an AutoCompleteTextView which should complete the names. The process takes really long time(approx. 2 - 3 seconds) to complete the suggestion. Is there any way to speed this up? I am pasting my code, if this is necessary:The getStreetsData() method simply returns the static list of the names.
View 2 Replies View RelatedI'm looking into writing simple graphics code in Android and I've noticed some synchronized() blocks. What is the reasoning behind this and how do I know when I should be "synchronizing" my code?
View 1 Replies View Relatedi want to display a msg to the user (msg box or Toast) when exception happend in a static SQLite Database class that i use. the problem is that i cant call a non static method in a static class , how can i handle this. this is the class
private static SQLiteDatabase getDatabase(Context aContext) {
and i want to add something like this in the class when exception happen but context generates the problem of reference to non static in static class.
Context context = getApplicationContext();
CharSequence text = "Hello toast!";
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(context, text, duration);
toast.show();
I'm having some issues with the old "Cannot make a static reference to a non-static method" error in my Android program. I am creating a sand falling game (similar to the Powder Game) and I created a class called Control to create a Control Bar at the bottom of the screen with a slider for brush size (that works fine) and a button to pop up a Dialog to allow users to pick the selected element. However, when I call DemoActivity.showDialog(2) from my code, it gives the static reference to non-static error (DemoActivity is the main activity of my application). I also tried changing it to just Activity.showDialog(2), but I got exactly the same error!
Here's my code:
CODE:................
I fixed it by adding the following to my Control.java code:
CODE:..........
And then calling control.setActivity(this); from my onResume section of DemoActivity.java!
I am modifying the source code here: http://thinkandroid.wordpress.com/2009/12/30/getting-response-body-of-httpresponse/
I get this error:
code:.............
This error is line 13 on the second box.
I'm looking into writing an Android game, tough I don't curerntly own an Android device. For those of you who own a device, how does the performance on the emulator relate to real device performance? I'm especially interested in graphics related tasks.This obviously depends on both the machine running the emulator, and the specific device in question, but I'm talking rough numbers here.This question is a duplicate, but since that post is heavily outdated, I figured it's irrelevant by now.
View 3 Replies View RelatedI have Eclipse Juno and I'm working on an app with that.
The main activity will have a scrollable menu that takes you to all the other activities.
So the general structure/outline right now:[HIGH]Relative Layout ImageView (header logo type thing) ListView (the actual scrollable menu)[/HIGH]Here's the problem though... I can't find any simple list tutorials. I can easily make a single line list work but I need to make a two line list and one that is static, not dynamic and no examples are out there for that. It's like if you want to make a 2 line list, you can only learn how to do it in the most code-heavy ridiculous way possible.
Essentially what I am looking for with the list is this: Item one: Centred, bold, non selectable title (Resources)
- Item two-??: two line list items, click-able to a new activity, title of the section on first line, description on the second line.
- Item ??: Centred, bold, non selectable title (Tools)
- Item ??-??: two line list items, click-able to a new activity, title of the section on first line, description on the second line.
Nothing dynamic that is ever going to change, no super complex wonkey calculations, just to simply have the data set in stone (preferably via XML) and to call it into the list.
I experimented with some of the other list views and no matter what I did, I could get, via editing the resources and NOT using Java, more that one item on a single line but it wouldn't format it properly according to the layout I guess because I haven't got the ID correct or whatever I don't know.
I mean, all the examples I've seen for a 2 line list are extraordinarily over-coded and just bloated. I mean I have a website I am still working on in C#/ASP.net that has far more complex things in it with half the code that I've seen for the examples of the two line lists.
I tried on my own to figure it out (I am decent with C# and vaguely familiar with Java, self taught, and programming for some other systems like Python, again all self-taught), but like ALL coding references, they're organised by the actual code you implement (that you don't know) instead of by what you want it to do (so you have to search the whole code base to find something that you don't know what it's called but know what it does). >:C
I have been finding it convenient to extend Handler in many of my activities to handle messages specific to the activity. The handler sublass is an inner class of the activity and needs to access its state. I am wondering if there is any performance difference between making the handler subclass static and passing in the activity explicitly in its constructor or making the subclass an "instance class" and letting the vm worry about my accessing members of the containing activity.
The static approach:
CODE:.............................
Motorola CLIQ Over-the-Air Update
[Retail Partner Sales - T-Mobile Employees and Authorized Dealers]
February 19 Update
The over-the-air update for the Motorola CLIQ has been delayed to the week of February 22. An updated article will be available once a date has been determined.
On February 18, Motorola will begin sending over-the-air (OTA) software updates to Motorola CLIQ customers. The software update will improve device performance and resolve several known issues.
Improved Performance:
Improved battery life
Improved software performance and stability
Improved widget response
Decreased Force Close error messages
New Manage SIM Card application
Support of .WMA and .WAV media files
Removal of the imeem mobile application
Known Issues Resolved:
Accessories & Bluetooth
Error: 'Unable to pair' or 'Unable to connect to device'
Call functions
Can activate other functions while listening to visual voicemail
Call not ended by pressing the End key
Speakerphone turns on unexpectedly when answer incoming call
Plays ringtone or vibrates while on an active call
Unable to answer incoming call using �Slide to answer� feature
Accidentally opens Dialer or makes outbound while holding device
Device hardware (battery, keys, power, screen)
Battery indicator may not display accurate battery power
Call not eded by pressing the End key
Touch screen issues
Cannot answer incoming call using the Slide to answer feature
Incorrect keys registered using on-screen keyboard
Touch display appears to have �dead spots� that are unresponsive
Accidentally selects item when trying to flick through screens or menus
Messaging
Wrong message deleted
Phone may reset when turning Wi-Fi off in area with no Wi-Fi coverage
Customers can manually download the OTA on demand by going to Settings > About Phone > System Updates. Customers do not need to wait for a notification message to download.
Action Steps
Be aware of the fixes and enhancements included in the Motorola CLIQ update.
If customers are experiencing any Known Issue that will be resolved by the software update:
Do not file a handset exchange
Advise customers that the issue will be resolved by a software update on February 18.
Important Rebate Changes
[Retail Partner Sales - T-Mobile Employees and Authorized Dealers]
Customers eligible for rebates as part of new activations or upgrades must be advised they will receive their rebates in the form of a prepaid Visa card.
When customers take advantage of our new Early Upgrade or Early Upgrade Plus options, they are not eligible for upgrade rebate cards. These new upgrade options allow customers to take advantage of upgrades sooner and provide an instant discount, instead of having to wait for rebate cards.
To be eligible for an upgrade rebate card, customers must meet upgrade eligibility requirements.
Current, 1-year contracts: 11 or more active months since last discounted handset purchase.
Current, 2-year contracts: 22 or more active months since last discounted handset purchase.
Rebates on eligible purchases require contract extensions and a $9.99 or higher Data/Messaging feature.
Valid only on FlexPay plans with 1 or 2-year contracts.
Not valid for Even More Plus plans.
Active Months: The number of months in which the account has been in good standing and during which service has not been suspended.
Action Steps
Inform customers that Early Upgrade and Early Upgrade Plus are not eligible for upgrade rebate cards.
Advise customers eligible for rebates that they will receive their rebates in the form of a prepaid Visa card.
"With the purchase of your new handset, you can submit a rebate form to receive your rebate. The rebate will be in the form of a prepaid Visa card that can be used anywhere Visa is accepted. See the rebate form for additional details."
Trackball Replacement Program
[Retail Partner Sales - T-Mobile Employees and Authorized Dealers]
On February 24, T-Mobile will launch a Trackball Replacement program for BlackBerry Pearl 8100/8120 and BlackBerry Curve 8320 customers that are having trackball issues. This program will be available in T-Mobile retail stores only at this time.
Action Step
Refer customers to a T-Mobile retail store after February 24 for further assistance if they come in to your location looking to complete a trackball replacement.
First Connect for Dealers
[Retail Partner Sales]
First Connect for Dealers is an exciting class designed to help on-board and prepare Retail Partners to successfully sell T-Mobile products and services and provide differentiated customer experiences. This four hour class is conducted via the T-Mobile Live Virtual Classroom and covers the following:
Welcome to T-Mobile
Who is T-Mobile?
PCC
Differentiated Handsets
Differentiated Rate Plans
Service Excellence / Selling Skills
Tools and Resources
Customer On-Boarding
The attached flyer contains dates and times for these calls as well as registration details. ADRs should educate their locations about these calls and encourage them to attend.
To successfully be able to attend the training sessions, Retail Partners should have the following:
Computers with high speed Internet connections
The ability to play and hear video segments on the computer using speakers or headset
The use of a fully charged mobile phone to hear the audio portion of the conference call
Printer access to print Participant Workbook.
Action Steps
Share the attached flyer with your locations and encourage them to attend one of the scheduled calls.
I am building an app that will be an Android listview. Each listview object will be a title and a few sub-categories and ratings. I would like the user to be able to sort the listview by these ratings or sub-categories.
View 1 Replies View RelatedI'm not sure if it possible but I was curious if any one found a way to hook up the AnDroid threw a USB connect or video out into my TV. I think it would be a great way to watch NFL network and other videos if there was a possible way if not thanks for looking.
View 9 Replies View RelatedI'm a bit scared about obfuscating my application completely. I'm afraid to run into issues where I can't figure out a bug because lines and function names wont match. Please correct me if I'm wrong... I thought maybe the simplest way to protect important parts of my code is to create a jar of the important files. I know and understand that jars are good only for classes and no xmls or other Android dependent parts. I believe it would be simple this way since I would not have to worry about obfuscating too much and breaking my project. Also, could be helpful for distributing to clients a library which they can't decompile.
In terms of obfuscating jars maybe I could do the same to the Market Licensing code to protect my paid application from pirating? What are your thoughts on my approach? Maybe bad idea? What experiences have you had with obfuscating your application? Is it not as bad as I think?
Could developer upload 'component'/SDK to android market? Now it seems only have 2 type: 'application' and 'Game'. I just wonder if android market has the mechanism for developers to upload component-wise programs which can be used in others's application. Then developers may get benefit from earch others. Or Is android provide a easy way to invok and communicate with other application from one application?
View 4 Replies View RelatedRather than do this by just creating a lot of strings (which I've already managed), I want to add an integer and then print those list to the screen. At the moment, I'm just trying to get one integer on the screen without even adding it, but the app is "force closed" in the emulator. Why doesn't this work? Add one to it and then print the answer to this for a given loop (say up until 10).
Code:
package com.monkeez.count;
import android.app.Activity;
import android.os.Bundle;
import android.app.Activity;
import android.view.View;
import android.widget.TextView;
public class Count extends Activity {
/** Called when the activity is first created. */
TextView countDisplay;
@Override public void onCreate (Bundle savedInstanceState) { int counter = 1;
countDisplay = new TextView(this);
this.setContentView(countDisplay);
countDisplay.setText("counter here");
} }
The log cat is thus:
09-01 09:54:07.051: DEBUG/AndroidRuntime(279): AndroidRuntime START
09-01 09:54:07.051: DEBUG/AndroidRuntime(279): CheckJNI is ON
09-01 09:54:07.401: DEBUG/AndroidRuntime(279): --- registering native functions ---
09-01 09:54:08.891: DEBUG/dalvikvm(193): GC_EXPLICIT freed 320 objects / 19376 bytes in 109ms
09-01 09:54:09.041: DEBUG/PackageParser(65): Scanning package: /data/app/vmdl48927.tmp
09-01 09:54:09.251: INFO/PackageManager(65): Removing non-system package:com.monkeez.count
09-01 09:54:09.251: INFO/ActivityManager(65): Force stopping package com.monkeez.count uid=10037
09-01 09:54:09.991: DEBUG/PackageManager(65): Scanning package com.monkeez.count
09-01 09:54:09.991: INFO/PackageManager(65): Package com.monkeez.count codePath changed from /data/app/com.monkeez.count-2.apk to /data/app/com.monkeez.count-1.apk; Retaining data and using new
09-01 09:54:10.011: INFO/PackageManager(65): /data/app/com.monkeez.count-1.apk changed; unpacking
09-01 09:54:10.054: DEBUG/installd(34): DexInv: --- BEGIN '/data/app/com.monkeez.count-1.apk' ---
09-01 09:54:10.511: DEBUG/dalvikvm(286): DexOpt: load 169ms, verify 64ms, opt 4ms
09-01 09:54:10.591: DEBUG/installd(34): DexInv: --- END '/data/app/com.monkeez.count-1.apk' (success) ---
09-01 09:54:10.602: WARN/PackageManager(65): Code path for pkg : com.monkeez.count changing from /data/app/com.monkeez.count-2.apk to /data/app/com.monkeez.count-1.apk
09-01 09:54:10.602: WARN/PackageManager(65): Resource path for pkg : com.monkeez.count changing from /data/app/com.monkeez.count-2.apk to /data/app/com.monkeez.count-1.apk
09-01 09:54:10.611: DEBUG/PackageManager(65): Activities: com.monkeez.count.Count
09-01 09:54:10.650: INFO/ActivityManager(65): Force stopping package com.monkeez.count uid=10037
09-01 09:54:11.631: INFO/installd(34): move /data/dalvik-cache/data@app@com.monkeez.count-1.apk@classes.dex -> /data/dalvik-cache/data@app@com.monkeez.count-1.apk@classes.dex
09-01 09:54:11.641: DEBUG/PackageManager(65): New package installed in /data/app/com.monkeez.count-1.apk
09-01 09:54:11.821: DEBUG/dalvikvm(65): GC_FOR_MALLOC freed 6733 objects / 446400 bytes in 140ms
09-01 09:54:12.561: INFO/ActivityManager(65): Force stopping package com.monkeez.count uid=10037
09-01 09:54:12.711: DEBUG/dalvikvm(126): GC_EXPLICIT freed 1940 objects / 106408 bytes in 121ms
09-01 09:54:13.351: WARN/RecognitionManagerService(65): no available voice recognition services found
09-01 09:54:13.831: DEBUG/dalvikvm(65): GC_EXPLICIT freed 4667 objects / 280056 bytes in 173ms
09-01 09:54:13.901: DEBUG/dalvikvm(165): GC_EXPLICIT freed 2326 objects / 125088 bytes in 1059ms
09-01 09:54:14.180: INFO/installd(34): unlink /data/dalvik-cache/data@app@com.monkeez.count-2.apk@classes.dex
09-01 09:54:14.271: DEBUG/AndroidRuntime(279): Shutting down VM
09-01 09:54:14.290: DEBUG/dalvikvm(279): Debugger has detached; object registry had 1 entries
09-01 09:54:14.340: INFO/AndroidRuntime(279): NOTE: attach of thread 'Binder Thread #3' failed
09-01 09:54:15.350: DEBUG/AndroidRuntime(291): AndroidRuntime START
09-01 09:54:15.350: DEBUG/AndroidRuntime(291): CheckJNI is ON
09-01 09:54:15.740: DEBUG/AndroidRuntime(291): --- registering native functions ---
09-01 09:54:16.960: INFO/ActivityManager(65): Starting activity: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=com.monkeez.count/.Count }
09-01 09:54:17.120: DEBUG/AndroidRuntime(291): Shutting down VM
09-01 09:54:17.170: DEBUG/dalvikvm(291): Debugger has detached; object registry had 1 entries
09-01 09:54:17.250: INFO/AndroidRuntime(291): NOTE: attach of thread 'Binder Thread #3' failed
09-01 09:54:17.301: INFO/ActivityManager(65): Start proc com.monkeez.count for activity com.monkeez.count/.Count: pid=298 uid=10037 gids={}
09-01 09:54:18.611: WARN/ResourceType(298): No package identifier when getting value for resource number 0x00000001
09-01 09:54:18.620: DEBUG/AndroidRuntime(298): Shutting down VM
09-01 09:54:18.620: WARN/dalvikvm(298): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
09-01 09:54:18.680: ERROR/AndroidRuntime(298): FATAL EXCEPTION: main
09-01 09:54:18.680: ERROR/AndroidRuntime(298): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.monkeez.count/com.monkeez.count.Count}: android.content.res.Resources$NotFoundException: String resource ID #0x1
09-01 09:54:18.680: ERROR/AndroidRuntime(298): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
09-01 09:54:18.680: ERROR/AndroidRuntime(298): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
09-01 09:54:18.680: ERROR/AndroidRuntime(298): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
09-01 09:54:18.680: ERROR/AndroidRuntime(298): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
09-01 09:54:18.680: ERROR/AndroidRuntime(298): at android.os.Handler.dispatchMessage(Handler.java:99)
09-01 09:54:18.680: ERROR/AndroidRuntime(298): at android.os.Looper.loop(Looper.java:123)
09-01 09:54:18.680: ERROR/AndroidRuntime(298): at android.app.ActivityThread.main(ActivityThread.java:4627)
09-01 09:54:18.680: ERROR/AndroidRuntime(298): at java.lang.reflect.Method.invokeNative(Native Method)
09-01 09:54:18.680: ERROR/AndroidRuntime(298): at java.lang.reflect.Method.invoke(Method.java:521)
09-01 09:54:18.680: ERROR/AndroidRuntime(298): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
09-01 09:54:18.680: ERROR/AndroidRuntime(298): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
09-01 09:54:18.680: ERROR/AndroidRuntime(298): at dalvik.system.NativeStart.main(Native Method)
09-01 09:54:18.680: ERROR/AndroidRuntime(298): Caused by: android.content.res.Resources$NotFoundException: String resource ID #0x1
09-01 09:54:18.680: ERROR/AndroidRuntime(298): at android.content.res.Resources.getText(Resources.java:201)
09-01 09:54:18.680: ERROR/AndroidRuntime(298): at android.widget.TextView.setText(TextView.java:2817)
09-01 09:54:18.680: ERROR/AndroidRuntime(298): at com.monkeez.count.Count.onCreate(Count.java:19)
09-01 09:54:18.680: ERROR/AndroidRuntime(298): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
09-01 09:54:18.680: ERROR/AndroidRuntime(298): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
09-01 09:54:18.680: ERROR/AndroidRuntime(298): ... 11 more
09-01 09:54:18.940: WARN/ActivityManager(65): Force finishing activity com.monkeez.count/.Count
09-01 09:54:19.470: WARN/ActivityManager(65): Activity pause timeout for HistoryRecord{43fb6718 com.monkeez.count/.Count}
09-01 09:54:19.550: INFO/ARMAssembler(65): generated scanline__00000077:03515104_00000000_00000000 [ 33 ipp] (47 ins) at [0x2de138:0x2de1f4] in 602730 ns
09-01 09:54:22.523: WARN/InputManagerService(65): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@43f92978
09-01 09:54:22.681: INFO/Process(298): Sending signal. PID: 298 SIG: 9
09-01 09:54:22.826: INFO/ActivityManager(65): Process com.monkeez.count (pid 298) has died.
And the Count Manifest.xml is thus:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.monkeez.count"
android:versionCode="1" android:versionName="1.0">
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".Count" android:label="@string/app_name">
<intent-filter> <action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter> </activity> </application>
<uses-sdk android:minSdkVersion="8" /> </manifest>
It seems that the parser on this site doesn't like to render my xml file - you can see it at
http://pastebin.com/raw.php?i=W75ak3E9
My fingers are crossed that orange release 2.2 update this week. What do I need to do backup wise and how? Or do I have to start again from scratch once I have the new software?
View 1 Replies View RelatedWhy should a static method in java accept only final or non final variables within its method, but not static?
For example I have the following method:
CODE:.................
In the business section of the NY Times today, under the Gadgetwise section, there is an article on the Incredible and the new features it has. Only problem is that the picture next to the article is the Eris!! Unless the Incredible now comes with a trackball and hard keys.
View 1 Replies View RelatedIs there a way to reorganize the contact someway other than Alpha? Like is there a way to assign a priority or something?
View 2 Replies View RelatedI am in between phones right now, and no longer have a N1 and am looking to replace it with another Android phone without switching carriers from AT&T.They currently have the HTC Aria(I have no interest in), the Samsung Captivate(Galaxy S), and will soon be getting the X10.This phone has been out for some time in EU/Asia and Canada for a bit, and I am fairly familiar with it. It seems the bad points are no multi-touch ever, Android 1.6 with a who knows for sure on Android 2.x, but the rest seems fairly solid. Most of the reviews are from when it first came out, and generally complain about the GUI being slow.My questions are basically:
1. Is the phone solid hardware wise, with build quality etc? I know it's mostly plastic, but does it feel cheap, hold up well?
2. Has Android 1.6 caused you any problems app wise? I'm fairly certain google navigation works on 1.6, which is a deal breaker for me if it doesn't.
3. How is the GUI, do you enjoy it? I can't stand Samsung's TouchWiz, Moto Blur, and prefer stock Android, but don't mind HTC Sense.
4. I keep reading something about the screen doesn't have all it's colors activated or something? Others say it is amazing. Curious if it is the Super LCD Sony is selling HTC to replace AMOLED.
I know the Galaxy S has a better CPU, GPU(Android isn't much for gaming anyways), more ram, Super AMOLED, blah, blah but their software is terrible and I don't like their form factor.
I have written a number of applications for blackberry and am just starting in Android. It seems to me that android has a lot more built in functions. I am starting by recreating some of my BB apps on Android and on one I take a few xml sites and parse them out. On blackberry I implemented this by creating a class that extended a thread. I would construct a new instance of this class with the parameters of my http request and it would call a function back in my main class, sending it the results. I am tempted to reuse my code, but am curious if android has something better built in. I have been looking at the handler class as well as possible using a service.
Bascially, I would like to start a new thread that will return a document of a specific url.
I have two applications A and B (in different packages,but it doesn't matter).Application B is an sms application that i have made and contains one activity.This activity has a method called sendSMS(String number,String text).I want to call this method from application A and send an SMS without opening the activity(the GUI) of application B but just send an SMS in the background by calling just the method of the activity.Any ideas?
View 10 Replies View RelatedOn methods like these kind, onItemClick(AdapterView parent, View view, int position, long id), what's the difference between position and id.
View 2 Replies View RelatedSo I'm writing an Android app which uses a large c++ library. I have everything working so that the java app can call the c++ delegation methods, but I'm finding myself wishing I could log messages from c++ to the Android log. This is easy from java, but I'm at a loss as to how to call a java method from c++. My searches found methods for opening a jvm from c++, which is not at all what I want to do. Ideally, I'd like to pass a log method pointer to c++, which could then be used whenever I wanted. Of course, java doesn't support method pointers.
View 2 Replies View RelatedI have a MapView where I would like to be able to tap the map to create a new item at that location if there is no item there, or display the info about the item if there is.
I tried overriding both the onTap(int) and onTap(GeoPoint, MapView) methods but apparently if the second method is overridden the first never gets called (commenting one or the other lets each one work as I expected).
I thought about just checking if an item was at the location, but there doesn't seem to be any handy methods available to do that (other than iterating through the list of items and checking each manually).
I know rule #1 of optimization is: don't do it! But I figured this was an easy question, and if I start using the faster method now I can save a lot of cpu time when I'm finished.Now, the answer to my question may be "there's no difference" and that's fine with me. I just want to know.
View 4 Replies View Related1. what is the getKeyDownTime() method? What does its return value mean logically? 2. what is the getKeyEventTime() method? What does its return value mean logiccaly? 3. I want to measure the time a key was depressed for. Eg: Key A was pressed for 60 ms. which of the above methods would be useful?
View 7 Replies View Related