I'm trying to change the text on a button in appcelerator.
Now I can change it once, but I can't change the text back once some event occurs.
Here is the code:
CODE:..............
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I have few buttons on the content. When I click on one button, I want to change the text of the button. 2-- Then I want to change the content view.
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When I run this in the emulator I get the following error:
TypeError: Cannot call method "add" of null.
What am I doing wrong?
I want to be able to make an iphone and android app using php. I have looked at phonegap and appcelerator and it seems like only html and javascript can be used. These frameworks want to make it easy to make apps using web technologies and PHP i would argue is one of the biggest web technologies, but I'm not seeing much (if any) support. I am new, so I could be wrong on multiple levels. So please enlighten me and let me know if what I am trying to achieve is possible.
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View 1 Replies View RelatedIn my project I'm Multiple choice list....in this all text view in white color...i want to change text color. in program I'm use simple xml main.xml
<?xml version="1.0" encoding="utf-8"?> <RelativeLayoutxmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#ffff00"> <List View android:id="@+id/android:list" android:layout_margin Top="2px" android:layout_marginLeft="2px" android:layout_marginRight="2px" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="1"android:background="@drawable/shape_1"android:listSelector="@drawable/shape_3" android:textColor="#ffff00" android:layout_marginBottom="44px" /> </RelativeLayout> I'm ListActivity class setContentView(R.layout.main); setListAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_multiple_choice, GENRES)); listView =getListView();listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
The above is the code I have written for filling borders of Button with black color.The same code I was using for 3 buttons by setting as background.Now, when I click button1, red color appears and goes when I releases. But I want Red color to be visible, until I press next button.Though I release Button1 after press, Red color should be visible. But Red color should only disappear when I press any other button.
View 2 Replies View RelatedI'm trying to change the text in the text view section of a custom layout. I Just get a null pointer exception for some reason.
Here is my code:
CODE:................
I am trying to set the Text of a Text View when a button is clicked.
I have been struggling, because the variable will increment, but If i put the code in to set the text, it crashes the app ?
Here is my code when it crashes:
Quote:
package com.example.test;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
[Code].....
however if I comment out the line
Quote:
score.setText(points);
, the app doesnt crash, but it doesnt do anything then.
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Since I will be creating an app with tabs, I am trying to implement this instead of having intents inside setContent. However, I am having a difficult time looking for examples or straightforward tutorials on swapping the current view with another one.
Say I have TAB_A, with some entry fields and a button. When the user clicks on the button, a TextView will display "Hello, user!" in the same TAB_A. Of course this is an oversimplified example, but it will surely point me in the right direction.
EDIT: I have a tab called TAB_A with a button in it. If the user clicks on that button, TAB_A will now display "Hello, user!" instead of the button.
Here is a sample of my TabSpec.
CODE:..............
Where ShowButton and ShowHello are classes both extending LinearLayout. Both are initialized in onCreate like this:
CODE:.............
When the app first starts, the user sees the view showButton. When the user clicks on the button, I want the tab to change its contents to showHello.
The question then is: Is there any way to update the contents of the tabspec without using startActivity?
I am trying to change the color of the borders of button using xml.
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View 1 Replies View RelatedI am working on Android Application. I want to have 4 buttons to be placed horizontally at the bottom of the screen.In these 4 buttons 2 buttons are having images on them.The border of the buttons should be black color and the border should be as thin as possible.When I click the button, I want the back ground of the button should be changed to blue color with out the color of border to be changed and should be remained in that color for some time. How can I achieve this scenario in Android.
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Here is the code:....................
Is it possible to change the default shape (i.e rectangular) of the button (normal button as well as imagebutton) to something else maybe like star or a triangle in Android?
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I have 3 activity, activity1, activity2, and activity3
another activity, activity4 is a login activity
start ->activity1-----click---->Activity2-----click---->activity3
CODE:......................
Now my question is that, when i click on apps, i want to start activity4. I'm not able to do this, always start of application is opening the activity2 in this case (back button).
I have a button in my Android project that contains two rows with text to the left, and one drawable on the right side. This works perfectly with this code...
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