How can we pass checked box status from one activity to the calling activity? For e.g., I have two activities. The first activity calls the second activity that has a listview with checkboxed items and two buttons, 'OK' and 'CANCEL'. The second activity has to pass the names of list items that are checked to the calling acitivity. I am not able to figure out how to do this efficiently?
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I want to have the status of a checkbox be saved into my prefs. I set a listener on the checkbox, and if it is checked I do a prefs.putBoolean("cbstatus", true), and it is it unchecked i do a prefs.putBoolean("cbstatus", false); Trouble is, in my onStart() when I get prefs, my Boolean getcbstatus = prefs.getBoolean("cbstatus", false); will always return a true, regardless of how my listener should have set that status previously.
What am I doing wrong? I have working prefs for other things like spinners, textviews, and edit texts, but what should be the simplest type (a boolean) is giving me a hard time. I've even tried taking out all code related to listeners and pref setting for this checkbox, so that the only code in the entire activity that deals with the checkbox is in the line
Boolean getcbstat = prefs.getBoolean("cbon", false);
if (getcbstat = true) { cb1.setChecked(true);
} else { cb1.setChecked(false);
format.setVisibility(View.VISIBLE);
}
Since there is no cbon preference (i deleted them all), it should return false by default and the box should be unchecked since. cb1, of course, is the name of my checkbox. Update on the code:
OnClickListener cb = new OnClickListener() {
public void onClick(View v) { if (cb1.isChecked()) {
prefs.putBoolean("cbon", true);
} else { prefs.putBoolean("cbon", false);
} } };
And in the onStart():
Boolean getcbstat = prefs.getBoolean("cbon", false);
cb1.setChecked(getcbstat);
I want to pass an object from Activity B to Activity A. Scenario:
- Activity A calls Activity B
- User selects item in Activity B
- Activity B passes an object to Activity A
How do I accomplish this? And in which method do I read in the passed object in Activity A?
The main activity includes some variables with set values. I created a sub-activity with the form which has to be filled with the data from main activity so I guess the data have to be passed to the sub-activity when it starts. how to pass the variable values to the sub-activity from the main activity?
View 1 Replies View RelatedI'm developing an app which basically navigates through a xml-feed. When I parse the feed or let's say the list, then each (list)item becomes a model. All the models are wrapped up in an array list. Now, when the user clicks on a list item, the underlying model is going to be serialized and sent as IntentExtra to the next Activity (e.g. a deeper sub list). (Originally I asked here a different question. The solution was not related to Serializable and wouldn't help anybody. However MatteKarla gave an interesting input. Thats why I decided to rewrite this question.)
View 1 Replies View RelatedToday I met a problem, I need to pass a ArrayList<MyClass> from an activity to another. I dont know what the Intent exactly do when I use putExtra to pass in an ArrayList<MyClass> object. I guess MyClass need to implement Parcelable interface, so I just did it. But still, it does not work. Maybe I need to create a Bundle and then use Bundle's putParcelableArrayList method to put my ArrayList<MyClass> object in, and then pass this bundle as parameter of putExtra to the intent. So crazy! I am lazy, I just want to pass an ArrayList<MyClass> object simply, is there a simple way??
View 10 Replies View RelatedI am trying to pass a user defined object to another activity Bundle bundle = new Bundle(); bund.putSerializable("myData", myData); intent.putExtra("bundle", bundle); where myData class implements Serializable interface. I am getting following error: java.lang.RuntimeException: Parcelable encountered IOException writing serializable object how to pass complex objects between activities?
View 7 Replies View RelatedI have an Object that I need to be able to pass between Activites. It implements Parcelable and I've written all the code related to that. The problem is that one of the properties of the Object is a Drawable - and really needs to be. Unfortunately, Drawable is neither Parcelable or Serializable. I don't understand how to pass it. The reason for having the Drawable is that I need to cache an Image that I've downloaded from the internet at runtime. I don't want to cache the images on the filesystem, since this would potentially end up using up a lot of space over time. I'm putting the image into a Drawable so that I can easily put it into an ImageView.
View 2 Replies View RelatedI am developing an application using services and Remote interface. I have a question about passing the reference of my Remote interface throughout Activities. In my first Activity, I bind my service with my activity, in order to get a reference to my interface I use
private ServiceConnection mConnection = new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName arg0, IBinder service) {
x = X.Stub.asInterface(service);
}
@Override
public void onServiceDisconnected(ComponentName arg0) {
// TODO Auto-generated method stub
}
};
x being the reference to my interface. Now I would like to access this interface from another activity, I see two ways to do it but I don't know which one is the "proper" way to do it: passing x with my intent when I call the new Activity redo this.bindService(new Intent(y.this,z.class), mConnection, Context.BIND_AUTO_CREATE); in the onCreate() of my new Activity
I'm working on an application that requires non-serializable objects to be passed between Activities. The following page suggests using a HashMap of WeakReferences to accomplish this:
http://developer.android.com/guide/appendix/faq/framework.html
Is this solution safe? I know Activities are completely destroyed and recreated when the screen orientation changes. Couldn't those weakly referenced objects get GCed in the split second when the screen is rotated, since they wouldn't be referenced elsewhere at that point?
How to pass data between activities in an Android application?
View 1 Replies View RelatedI am trying to pass a custom object to one activity from another. What I would like to use is the HashMap of WeakReferences, but the description isn't clear, at least to me. From above URL: "A HashMap of WeakReferences to Objects. You can also use a HashMap of WeakReferences to Objects with Long keys. When an activity wants to pass an object to another activity, it simply puts the object in the map and sends the key (which is a unique Long based on a counter or time stamp) to the recipient activity via intent extras. The recipient activity retrieves the object using this key."
MyObject object = new MyObject(); HashMap map = new HashMap(); WeakReference reference = new WeakReference(object); map.put(reference.hashCode(), reference);
Intent i = new Intent(myIntent); i.putExtra(map);
I know this is probably way off but I can't figure out how this is intended to be implemented based on the description. Are the keys hashcodes, user defined, or what? It sounds like all that is passed is a HashMap containing the key values but how is the object retrieved with just the key? I couldn't find any code examples or useful documentation on this method of passing objects
How to pass socket, inputstream, outputstream objects between activities
View 1 Replies View RelatedHow can I pass a Object: ArrayList from one Activity to another? Seems that intent cannot hold custom ones except ArrayList. As a kind of hack, I use a static member: staticResultList = new ArrayList<SingleExamResult>(m_examResults); and Get it in the following Activity by: m_examResults = DoExam.staticResultList; It's not the correct way obviously, any 'common' approaches?
View 1 Replies View Relatedclass1.java has creates a float[] array that is need to have in class2.java. How do you do this? The float[] is points. Here is an example code:
class1.java
import android.app.Activity;
import android.content.Context;
import android.app.ListActivity;
import android.content.Intent;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Typeface;......................
The FAQ mentions a method of passing objects around activities. (It is not clear to me): "A HashMap of WeakReferences to Objects. You can also use a HashMap of WeakReferences to Objects with Long keys. When an activity wants to pass an object to another activity, it simply puts the object in the map and sends the key (which is a unique Long based on a counter or time stamp) to the recipient activity via intent extras. The recipient activity retrieves the object using this key.".................
View 7 Replies View Relatedi have a scenario of login page after logging in there will be sign out button on each activity. on clicking signout i will be passing session id of signed in user to signout. can any one guide me how to keep session id available on all activities??
View 3 Replies View Relatedwhy CheckBox is always null.
<CheckBox id="@+id/checkbox" android:layout_width="wrap_content" android:layout_height="wrap_content" />
code file-
package com.reblogr.reblogrclient;
public class Test extends Activity { /** Called when the activity is first created. */
public CheckBox checkbox;
@Override public void onCreate(Bundle savedInstanceState) { ....................
I was just on there yesterday i go into browse tonight and now all of a sudden it says pass world invalid from last night till this morning i tried typing in the little letters they had and I cant read it so I go to the google site. I put the info in and it says sorry account has been terminated for terms and conditions I didnt even do any thing to violate them?
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Innos i6c (Xperia Style)
I want to display list of items in my application and user will select checkbox which is present in front of each item. List is displayed well. It also shows checkbox infront of list item but when I click on checkBox it is not getting selected. My code is like this
.........................
Is it possible to get a smaller CheckBox, like the one used in Settings application? I'd like to use it in my own custom Preference class, to mimic Android UI more closely..
View 1 Replies View RelatedI have a question, been stuck for a while, i don't know how can i add a checkbox in the list, for example if I have a list of items i want to be able to check them. my XML code...
View 4 Replies View RelatedHere is how I setup my checked text view. How come no check box appeared?
View 1 Replies View RelatedHow do i on checkboxselected , show a toast that has data from database?
View 1 Replies View RelatedI have a horizontal LinearLayout. This LinearLayout has a checkbox next to another LinearLayout. The layout width/height of the checkbox is wrap_content, whereas the inner LinearLayout is fill_parent/wrap_content. The layout_weight of the inner LinearLayout is set to 1.
I've tried to add some android:padding around the checkbox to give some space around it, but no padding is given. I've also tried android:paddingLeft/Right/etc. How do I get some padding around my checkbox?
Note: I have an inner LinearLayout because I will be adding more TextViews
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="?android:attr/listPreferredItemHeight">
<CheckBox
android:id="@+id/mycheck"
android:text=""
android:layout_width="30dip"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:focusable="false"
android:background="@drawable/checkbox_background"
android:button="@drawable/checkbox"
/>
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_weight="1"
android:layout_height="wrap_content">
<TextView
android:id="@+id/mytext"
android:layout_width="fill_parent"
android:layout_weight="1"
android:gravity="center_vertical"
android:layout_height="wrap_content"
android:lines="1"
android:textColor="@color/white"
android:textSize="10sp"
android:textStyle="italic"/>
</LinearLayout>
</LinearLayout>
I have simple list to be filled in from the database along with a checkbox. I need a handle to all the checkboxes selected. Whn the CLEAR button is pressed at that point I need the row ids of all the selected check boxes to delete them. To do this :
My list.xml file looks like this :
CODE:......
and my data_entry.xml looks like this:
CODE:............
Now: I have list.java file where I am populating the list as follows:
CODE:.....................
Now where do i give the handle to the heckbox cause anywhere else it would give me a null exception as the data_entry contains the checkboxes. Plus I need a listener to handle the checkbox status?
How can I have a checkbox in my ui alter my ui live? For example, if the box is unchecked I want a spinner to be displayed, and if the box is checked I want a text box to be displayed in place of the spinner. I know how to create the checkbox and check its status but I don't know how to hide and reveal other elements in an activity.
View 2 Replies View RelatedI would like to create a layout that would have a Checkbox, then a divider, then a listview with single choice mode.
I tried this
CODE:............
with this
CODE:.............
But it didn't work. I can't seem to get a checkbox on top of a listview properly. I also would like for the words to be to the left of the checkbox. Any help on this would be much appreciated!