I want to call a bitmap from a method in my main class and am unsure how to do it - I have a method: Code...
So basically, how can I place the bitmap in my detectFaces method in my main class and pass it as a bitmap on my imageview in my false class?
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implicit intent with class name as action defined in intentfilter. is not working. Only it it is defined as "android.intent.action." it is picked up ? is it so ?
I have app A with the following in manifest.xml file
CODE:.............
In app B, i tried to call the activity in A using below code.
CODE:.............
This code works. But not above line.
You need a reference to the class that contains the method you want to call. To access the method homepage() inside the eSkyGuide from the class Weather, you need an instance of the eSkyGuide class inside the instance of the Weather class.
View 4 Replies View RelatedI am a beginner in Android Developing. Can any1 please guide me how to call a Method of a class kept under other package. Like class A in Package 1 calls a method in Class B of Package 2 which returns An array or object. Do i have to create an Intent for that? actually i have to gather all information in 1 class from different classes kept under different packages.
View 2 Replies View RelatedI am writing a basic game engine and have an abstract class that represents any object that can be drawn in the 3D world, however inside this class is an abstract method Render() which I would like called automatically by the engine on each draw phase.
How could I implement this so that every class extending from my abstract class will automatically have Render() called? I am using java, android sdk 2.2, and opengl es
I created a method called insertTable in a class called Table but i can't use it in my onClick method in the main class :
CODE:.......
I want to do a income.insertTable in the onClick method but eclipse say that i need to create a local variable.
I've been trying to call a non-static method, located in my main application Class, from the Preferences Class. Because the method I call is not static, I instantiate the main class and then try to call the specific method I want but it's force closing.
Preferences.class (from where I call the method):
Preference sorted = (Preference) findPreference("sortPref");
sorted.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
public boolean onPreferenceChange(Preference preference, Object newValue) {
Object d = new Dmarks();
((Dmarks) d).queryBookmarks();
return true;
}});
the Dmarks.class method I call:
public void queryBookmarks() {
Toast.makeText(context, Toast.LENGTH_LONG).show();
//context is not null and the Toast is working if I call it from Dmarks.class }
The Logcat:
E/AndroidRuntime(11718): FATAL EXCEPTION: main
E/AndroidRuntime(11718): java.lang.NullPointerException
E/AndroidRuntime(11718):
at android.content.ContextWrapper.getContentReso
lver(ContextWrapper.java:90)
E/AndroidRuntime(11718):
at android.app.Activity.managedQuery(Activity.ja
va:1520)
E/AndroidRuntime(11718):
at com.droidil.droidmarks.Dmarks.queryBookmarks(
Dmarks.java:101)
E/AndroidRuntime(11718):
at com.droidil.droidmarks.Preferences$2.onPrefer
enceChange(Preferences.java:47)
E/AndroidRuntime(11718):
at android.preference.Preference.callChangeListe
ner(Preference.java:756)
E/AndroidRuntime(11718):
at android.preference.ListPreference.onDialogClo
sed(ListPreference.java:219)
E/AndroidRuntime(11718):
at android.preference.DialogPreference.onDismiss
(DialogPreference.java:384)
E/AndroidRuntime(11718):
at android.app.Dialog$ListenersHandler.handleMes
sage(Dialog.java:1047)
E/AndroidRuntime(11718):
at android.os.Handler.dispatchMessage(Handler.ja
va:99)
E/AndroidRuntime(11718):
at android.os.Looper.loop(Looper.java:123)
E/AndroidRuntime(11718):
at android.app.ActivityThread.main(ActivityThrea
d.java:4627)
E/AndroidRuntime(11718):
at java.lang.reflect.Method.invokeNative(Native
Method)
E/AndroidRuntime(11718):
at java.lang.reflect.Method.invoke(Method.java:5
21)
E/AndroidRuntime(11718):
at com.android.internal.os.ZygoteInit$MethodAndA
rgsCaller.run(ZygoteInit.java:868)
E/AndroidRuntime(11718):
at com.android.internal.os.ZygoteInit.main(Zygot
eInit.java:626)
E/AndroidRuntime(11718):
at dalvik.system.NativeStart.main(Native Method)
D/dalvikvm(11718): GC_FOR_MALLOC freed 4248 objects / 282248 bytes in 40ms
W/ActivityManager( 244): Force finishing activity com.droidil.droidmarks/.Preferences
I am using the following method in a new application I'm developing. There is a main activity, which instantiates different classes that extends RelativeLayout and I'm using setContentView to switch between the different modules of the application. I wonder if this is a good approach or necessarily I have to use different activities to the several screens the app haves.
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();
Basically I'm calling the onDraw method like so...
code:...................
You see I'm drawing it on top of a Camera view and the information being drawn is subject to change. I have a listener setup which will update the variables being drawn at the appropriate time but I now want to "refresh" this draw in that listener.
I have just started android. I just want to know that how can i call activity class from other java class. i just want to pass class object to activity class.
public class GsonParser extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
MagazineThread thread=new MagazineThread();
thread.start();
}
public GsonParser(JsonMagazineParser Obj)
{
}
}
and i am just doing like from other class. GsonParser obj=new GsonParser(this);passing obj to activity class.how can i achieve that.
I have a page on which i am displaying image from gallery then i have next page button to move to next activity on that button i am using clearBitmap(); to free memory used by it.
CODE:.............
which gives me error logcat
CODE:.....................
This works great for files.I marked the location needing refactoring to get it to work with a bitmap. I can't seem to find a compatible ContentBody for .addPart.The problem I am trying to solve is that I already have the image in an ImageView within an Activity, so rather than read it again from the SD cara, I want to pass it to this method directly.I will probably scale it while I am at it.
View 1 Replies View RelatedI am trying to display an bitmap I created in and android program, but all the tutorials I find involve either Drawables or XML in order to display them. Can someone show me the steps needed to display an Bitmap in code?
This is not the entirety of the code, this is just the majority, the rest is related to getting the camera working. code...
When I pass a Bitmap using the Binder Remote service mechanism, does the internal implementation of writeToParcel/createFromParcel of the Bitmap class use shared memory?
View 5 Replies View RelatedPosted my problem here too HERE: A beginner..Im doing a school map app.
First of all I have background with 4 buttons ( level3, level4, level5, level6) I try and click all the buttons, normally after clicking 3 of it, the next one will crash.(each level button goes into a level map, whereby clicking the room image buttons, I will enter into the gallery-imageswitcher)
I have at least 5 imageswitchers in each level maps,so that about over 20 imageswitcher galleries overall.
I did all my stuffs using DRAWABLES instead of BITMAPS.. I have tons and tons of images (because its a school map, show all the photos in my school, and all those backgrounds and imagebuttons)
I did some research, and those who have problems are those using bitmap. Some of the ways that can be solved is system.gc();, and bitmap.recycle...(not so sure how to use it though)
In my main background - starttour.java Code...
PS: I have tons of images in the app; I have at least 5 imageswitcher gallerys in each level, so that kinda adds up to over 20 imageswitchers in my app.
Can i call method of Listactivity from Activity class? I have creates Intent object of myListActivity class and called startIntent() from myActivity class.
View 3 Replies View RelatedIs there any class or method for getting cdma signal strength I got for gsm but not for cdma in android??
View 1 Replies View RelatedThis question occured to me while programming a Android application, but it seems to be a general programming question more.
The situation is, I am extending (subclass-ing) an class from a library, and overriding a method. how do I know if I should invoke the method of super-class? and when? (in the beginning of the overridden method or in the end?)
For example, I am overriding the method "public boolean onCreateOptionsMenu(Menu menu)" from class "Activity" in Android platform. And I saw someone write "return super.onCreateOptionsMenu(menu)" in the end of the method, in an example. But how do I know it should be done this way? and it is correct or not? what's the difference if I begin my method with "super.onCreateOptionsMenu(menu)"?
I am trying to call my service class's stopService() method from my activity. But I don't know how to access stopservice method from my activity class. I have the below code but its not working. This is HomeScreen class:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
enablecheck = (CheckBox)findViewById(R.id.enablecheck);
enablecheck.setOnCheckedChangeListener(new OnCheckedChangeListener(){
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// TODO Auto-generated method stub
if(enablecheck.isChecked()){
startService(new Intent(HomeScreen.this, AutoService.class));
} else {
stopService(new Intent(HomeScreen.this, AutoService.class));
} } });
}
This is Service Class:
public class AutoService extends Service {
private static final String TAG = "AutoService";
private Timer timer;
private TimerTask task;
@Override
public IBinder onBind(Intent intent) {
return null;
} @Override
public void onCreate() {
Toast.makeText(this, "Auto Service Created", Toast.LENGTH_LONG).show();
Log.d(TAG, "onCreate");
int delay = 5000; // delay for 5 sec.
int period = 5000; // repeat every sec.
timer = new Timer();
timer.scheduleAtFixedRate(task = new TimerTask(){
public void run() {
System.out.println("done");
} }, delay, period);
}
@Override
public boolean stopService(Intent name) {
// TODO Auto-generated method stub
timer.cancel();
task.cancel();
return super.stopService(name);
} }
I have code which has one activity which passes information to a second activity.
I can use this information to pass to a third activity with additional information from the result of the second activity.
I want to use gestures as a method of going back to a previous activity, but if I go back from the third to the second activity I need the information initially passed from the first to the second activity to still be present.
i.e.
First Acticity
what is Y?
answer y = 5
Second activity
User said Y = 5
what is X?
Third Activity
User said Y = 5
X = 6
Go back to Second activity but maintain the input of
User said Y = 5.
To do this I have used a bundle to pass the information between activities, but I can only access the info in the bundle from within a method within the class started by the intent.
The gesture controls are within another class, so I cannot access the bundle information from within this class as the getIntent command produces a not defined error.
What I need to do is to be able to pass the information from the bundle from the first activity to the gesture class so that I can pass it back when I go back using the gestures.
Since API 7, PhoneStateListener has a function: void onSignalStrengthsChanged( SignalStrength signalStrength )
Question: how can I override this via reflection so that I can stay backwards compatible with earlier APIs that don't have the SignalStrength class ? If I make the argument an Object, the signature changes of course.
The problem seems to be that the Service class does not inherit the > findViewById() method.
View 3 Replies View RelatedI am trying to execute a {public void} method in Service, from scheduled TimerTask which is periodically executing.This TimerTask periodically checks a condition. If it's true, it calls method via {className}.{methodName};However, as Java requires, the method needs to be {pubic static} method, if I want to use {className} with {.dot}.The problem is this method is for notification using Toast(Android pop-up notification) and Status Bar.But for this to work, the method must not have {static} modifier and resides in Service class.So, basically, I want background Service to evaluate condition from scheduled TimerTask, and execute a method in Service class.Can anyone help me what's the right way to use Service, invoking a method when certain condition is satisfied while looping evaluation?
View 1 Replies View RelatedI try to make android java app that uses webkit browser component but in slight different way. My primary goal is to modify the webkit WebViewCore java class method so my android application uses my own WebView which derived from modified WebViewCore and acts as I wish. The problel is that WebViewCore and entire bunch of related classes is not part of public SDK.
So far I tried:
- replaced android.jar from SDK in my project with "full" version (framework.jar)
- copied entire webkit java classes from Android OS to my project and modified the method as I need.
- included in lib/armeabi the libwebcore.so and libchrome_net.so (these I grabbed from rooted phone which I gonna to use for experiments)
- compiled and created apk file with libs included (in the code java layer calls my own libs using System.loadLibrary(..))
- application crashes on launch on device with:
Code:
04-18 10:39:23.451: D/dalvikvm(8214): Trying to load lib /data/data/com.tester.webtest/lib/libwebcore2.so 0x2bb4a1c8
04-18 10:39:23.511: D/dalvikvm(8214): Added shared lib /data/data/com.tester.webtest/lib/libwebcore2.so 0x2bb4a1c8
04-18 10:39:23.521: D/dalvikvm(8214): Trying to load lib /data/data/com.tester.webtest/lib/libchromium_net2.so 0x2bb4a1c8
04-18 10:39:23.531: D/dalvikvm(8214): Added shared lib /data/data/com.tester.webtest/lib/libchromium_net2.so 0x2bb4a1c8
04-18 10:39:23.541: D/dalvikvm(8214): No JNI_OnLoad found in /data/data/com.tester.webtest/lib/libchromium_net2.so 0x2bb4a1c8,
[code]....
What should I do for making my own independent version of webkit, so I can install it with my application on specific phone without breaking other apps (browsers) behaviour?
I m doing some task with following code,
I want to access inner class variable from outer class method.
class Outer extends Activity
{private Handler mHandler = new Handler();
StopTheThread()
{mHandler.removeCallbacks(mUpdateTimeTask);//
This is the what I want to do:
} class Inner
{ final Runnable mUpdateTask = new = new Runnable() {
public void run() {
//Some Code Goes Here
} };
InnerClassMethod()
{ mHandler.removeCallbacks(mUpdateTimeTask);//
This statement working fine here. Here mUpdateTask is inner class variable which is not accessible from outer class.
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 have a main class which has edittext box. And i have another class in the same source folder. Now i want to use the text typed in main class accessible to the another class.
View 1 Replies View RelatedI am looking to run a certain method call every ten minutes in Android, what is the best way to go about implementing this? I am currently looking at using the Handler object's PostDelayed method.
View 1 Replies View RelatedI have a java class Poker.java and an Activity .GameWindow in GameWindow.Java. In the GameWindow activity i have a method...
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