I been creating this grades calculating app and m having problems with calculations.The app looks very similar to this website: University Grade Calculator, calculate module averages and degree classifications - unigradecalc.. My app is basically the app version of that site but i just can't seem to work out the formula.
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Like the topic of the thread says. In my game I would like to turn all the calculations into FP format. I can eliminate pretty much everything else but I still need to do the the following calculation in long format.The value I get from this is the time passed since last frame, which is like.. two digit millisecond value, which naturally is more than good for FP stuff. After that calculation I turn the resulting value into FP integer and use it with the rest of my calculations but I'd like to get rid of that long calculation too. Any ideas how to go around this to do it in FP format?So any advice how to keep the same "accuracy" of the timer but get rid of the long calculation and have it replaced with nice and fast FP calculation. Any advices on how to trim down the System.currentTimeMillis()
View 7 Replies View RelatedI want to be able to let a button do some time calculations for me.
Basically I want the user to able to press the button and it will take the system time on their device and add numbers to it.
This is the code I have so far:
[HIGH]public void onClickHere (View v) {
Calendar time = Calendar.getInstance();
int hourofday = time.get(Calendar.HOUR_OF_DAY);
int minutes = time.get(Calendar.MINUTE);
time.add(hourofday, 6);
time.add(minutes, 14);
}[/HIGH]
The code above is just an example and it takes the system time and puts it in a TextView. It will also add 6 to the hours and 14 to the minutes. The problem is I get force close errors when the time is something like 1:50pm. You can't add 14minutes to 50minutes. Is there another direction I can take so that it adds up correctly and I can add any number of hours and minutes to any time?
i have two files
App.java
Gallery.java
App. java contains frontend buttons and functionalities Gallery.java lists the imagesin the sd card. i want to call Gallery.java in click event in app.java
App.java
package gallery.display;
import android.app.Activity;
import android.os.Bundle;
import android.view.View.OnClickListener;
import android.view.View;...........
I'm trying to call a java method from javascript using addJavascriptInterface(); but seems does not work, it always display "failure"; java code...
View 2 Replies View RelatedJava packages like Java.io, Java.Lang etc used in android, are they different from Java packages in windows ? means specially made for android ?
View 2 Replies View RelatedI'm having some problems porting a Java application to work in Android platform. I detected an incompatibility problem between java sun and Adroid sdk in java.lang.Class. I oberved that: public Field[] getFields() Returns an array containing Field objects describing all fields which are defined. That's array is sorted as attributes are declared in the main Class in sun jdk. For example, next Class is defined as: public class Example { public boolean stop; public int atr1; public String name; ....
}
I do an import of the full package name / java file, and if I do a <classname>.<method>, SOMETIMES I can get it to access - other times I get a lot of can't use a static in a non static bunch of talk. I'll admit I'm new to Java, so what do I need to do? Call a class instance first, then call my methods? I'm rather confused by this, as I want to put all of my 'functions' into a FunctionsList.java file, and all of my main Activity (UI) into a MyActivity.java file.
For example:
<MyActivity.java>
import com.example.FunctionsList;
private class MyActivity extends Activity {
FunctionsList.function();
}
9/10 times I get that static/non-static error. If I put all of my functions into MyActivity.java, I have zero problems!
i hav two classes...both classes are extends activity.. i need call other class method on main class on android development..its urgent..please.. i done something like subclass sub = new subclass()...its not work..
package org.me.intent_testing;
import android.app.Activity;
import android.os.Bundle;
import android.widget.;
import android.view.;
import android.content.Intent;...........
I am trying to install the ADT Plugin. It is not working.
Tried:
This is after Hello->Install New Software
Name: ADT Plugin
Location: https:[code]....
How do I install ADT Plugin?I am using Java 6 instead of Java 7 per recommendation of posts elsewhere. It didn't work.
i hav two classes...both classes are extends activity.. i need call other class method on main class on android development..its urgent..please.. i done something like subclass sub = new subclass()...its not work..
In 1st activity class
package org.me.intent_testing;
import android.app.Activity; import android.os.Bundle; import android.widget.; import android.view.; import android.content.Intent;
/** * * @author pavankumar */
public class FirstActivity extends Activity {................
I was going through the code for Activity.java and ApplicationContext.
Both these classes define many functions of Context Interface. Take for example startActivity.java
Activity Class has its own implementation of startActivity ApplicationContext class also has an implemenetaion of startActivity.
Now there are 2 observations...
CODE:..........
Questions: 1. Who uses ApplicationContext class? 2. Does Activity class ever deal with ApplicationContext class (as given in the javadoc comments of ApplicationContext.java).
Want to know if there is an app to run Java on my HTC EVO.
View 1 Replies View RelatedI know there are plenty of tutorials about integrating C++ into Java, but whats about the other way around, a Bridge from Java to C++?
The reason i'm asking this is Android.
Every C++ developer who wanted to write applications for the android noticed at some point that there is no serious (mature) C++ api for android (infact, android is lacking an implementation of the STL).
The only API that is mature enough to write android applications in, is Java. So instead of writing an api from scratch, wouldn't it be possible to use the Java Classes from C++?
I know that this sounds merely like an unrealistic dream, but that way most C++ developers weren't forced to learn a new Language.
I've seen this question asked many times but none of the answers really made sense in what I'm doing... I have an android game (see source at Google source control: http://code.google.com/p/bestcardgameever-android/source/browse/#svn/...) It's a card game, and I've used a method that redraws each hand every round - that might be wasteful but I couldn't think of a better way to do it. Code...
View 3 Replies View RelatedI can debug the Android Java code using eclipse and using the Remote Java Application debug configuration. This does not step into C/C++ code however as expected. I understand I have to attach the gdbserver to do this. Can someone provide a step by step tutorial on how to debug the native code of Android?Is there a eclipse plugin that makes this easier?
View 3 Replies View RelatedHow can I add a layout to another layout in java? In xml, you can do it with include. How can you do it in Java without the help of XML? (I need to know this because the number if includes changes dynamically).
View 5 Replies View RelatedThe API I need to work with does not support xpath, which is a bit of a headache! The xml I want to parse is as a String. My questions: Is there a Java equivalent of "simplexml_load_string", where it makes the string into an xml document for parsing? Which is better for parsing, SAX or DOM? I need to get a couple of values out of the XML and the structure isn't that deep. [3 levels]
View 2 Replies View RelatedI wanted to use the ApiDemos in the SDK samples but I have a problem in finding the R.java file, I don't know why is it missing.
View 5 Replies View RelatedWhen i started learning android i learned that R.java files goes to /gen folder recently i saw it on /src file (in WROX-Professional Android App Dev- sample code downloads). How does this work and also in some code i saw (xml layout) android:id="@+id/R.id.someName"(i don't remember in which web page i saw this code) I don't understand this, can somebody help me with this.
View 1 Replies View RelatedWe are implementing a sever-client architecture and some of the client apps are supposed to run on android OS. The first idea that came to mind was to use Java RMI, but the RMI api is obviously not implemented for android.So
1) Is there a way to use the Java RMI api in an android application? Can I just import it from the standard java library?
2) What are the possible substitutes for RMI which will work for both android and desktop applications?
I am learning Android development, specifically to eventually do OpengL 2.0 ES on it. So far I have read that the NDK supports Opengl 2.0 ES. However, is there also a Java API for it? If there is a Java API for it, which one is recommended? I know both C++ and Java, so it is not a big deal if I have to use the NDK, but I would prefer to work only in Java if possible and without a big performance hit.
View 1 Replies View RelatedI've been working on a project for several weeks now, and just tonight I started having a problem. The R.java file is no longer being generated. I've attempted to clean the project (the first time I do this it removes the R.java file but doesn't regenerate it) and have tried uninstalling and reinstalling the SDK. I've also tried resetting adb to no avail.
This problem does not occur in my other Android projects. They clean just fine and regenerate the R.java file like nothing is wrong. This particular project is the only one suffering from this problem.
I am about to start developing an Android application and had a question if in Java there self naming. For instance say I had a variable named dog that held the value of scruffy. Could I then create a variable named scruffy from that variable. In PHP it would be $$dog. That would make a variable with the name scruffy.
View 1 Replies View RelatedSo I have the basics down... I can create a UI with the XML, I can show it and change the screen to another UI (another XML file) but how do I add to the UI?
Hard to explain...
Say I have a header (just 2 textviews) that will remain at the top and below that is a search box and button (main.xml). The user searches and I have it display the search UI (search.xml). This UI will have the same header (2 textviews) and below it will have several textviews each one containing a search result... Kinda like if you search for an app in the market. There's no way of telling how many results would be returned so I figured I would have to create each textview on the fly within the .java file. I'm not sure how to do this. Most likely would require a loop of some sort, but whats the syntax to create a new textview and display it right below the one above it? I'm working with linear here so I would assume just creating a new textview it will by default go to the next one down which is what I want.
Also, say I have 30 results... How do I get those to scroll but leave the 2 textview header in place? Would I create a ScrollView and put the new TextViews in that?
However I'm not a big java fan, although I can live with that, I would like to know if there're reasonable alternatives for the android virtual machine. I've done a medium sized project using clojure, however from the reviews I read, it's very slow when running on android. How about scala ? I read that some people did experiments with it in android, is it "fast enough" ? How big is the learning curve ?
View 6 Replies View RelatedDuplicate: Question 167179: Java Tutorial
I want to learn Java because I want to program for the Android but don't know the best place to look. Where did you go.
I am using a Java application to send UDP packets to an Android device. There I have another Java application that receives these UDP packets and displays its data - very simple.Now I am working on some routing algorithms - therefore it would be nice to know how many hops a UDP packet did since it was send. My idea is to just read out the TTL (time-to-live) value of the packet and display it. Do you know if this is possible with pure Java? The class DatagramPacket doesn't give any hints at all.I guess that this is not possible because this information might already have been removed at a lower layer, but I just want to be sure. :-)
View 2 Replies View RelatedBeen doing some android networking lately. Having some trouble actually sending the data back and forth.
Java -> Server (runs on the desktop): its job is to constantly listen on a port and connect clients. Once a client connects, it creates a new JFrame with a graphics class.(Basically a giant canvas) There is a separate thread that is always listening to the client.
Android -> Client: An android device is the client. Its job is to connect to the server, with a given IP/Port. Once the connection has been established, it changes (setView) the view to a canvas. On the canvas there is a box that moves based on touch input.
Objective: The box moves on the android screen, but it doesn't move in the JFrame window.
I think the information is not being relayed. I have tried dataOutputStream. But for some reason there is a major Lag in sending the information. (Not waiting for serverSocket) Basically i want a real time updates. As the box moves on the android device, it should also move on the JFrame.
I am interested in developing a P2P android app.In order to solve the NAT traversal problem, it would be great to use a library like Google's libjingle.Unfortunately, the only implementation I can find is in C++.Does anyone know of a java implementation or know of any plans to provide a java implementation?
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