Android :: Change Text In Text View
Sep 11, 2009I'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'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:................
In 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);
I have a problem as follows:
In my project i am having rich text editor options to apply for the edit text view. In that i applied font color,font names,font size options for user.But these options will apply for whole text available in edit text. But my problem is i want to apply user selected settings (like font color,size,font) for user selected text instead of Whole text. i want to apply the user selected font/color/size to the user selected text.How?
How to implement this .
how to change the font in textview? as default its shown up as Arial. how to change it to helvetica?
View 2 Replies View Relatedi“m working with a lineal layout and I“m trying to change the text of a TextView but it doesn“t refresh. When I debug I“ve checked that the text have changed correctly.public class Position extends Activity {
Button botonempezar;
Button botonsalir;
TextView text;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.position);
botonsalir = (Button) findViewById(R.id.salir);
botonempezar = (Button) findViewById(R.id.Empezar);
text = (TextView) findViewById(R.id.Textoposicion);
botonsalir.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
onDestroy();
finish();
} botonempezar.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
searchPosition();
private void searchPosition(){
boolean condition = true;
do{
determinatePosition();
}while(condition == true);
private void determinatePosition(){
this.text.setText("New text");
//this.text.invalidate();
this.text.postInvalidate();
Toast.makeText(getBaseContext(), "New text", Toast.LENGTH_SHORT);// this doesnt work neither.
Here I post the code of the xml file. Its really silly but it could be the problem:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView
android:layout_height="wrap_content"
android:id="@+id/Textoposicion"
android:text="PosiciĆ³n desconocida"
android:layout_width="fill_parent"
android:layout_marginTop="20dip"
android:inputType="text">
</TextView>
<Button android:layout_height="wrap_content"
android:id="@+id/Empezar" android:text="Empezar"
android:layout_width="fill_parent"
android:layout_marginTop="20dip">
</Button>
<Button
android:layout_height="wrap_content"
android:id="@+id/salir"
android:layout_marginTop="20dip"
android:text="Finalizar programa"
android:gravity="center" android:layout_width="fill_parent">
</Button></LinearLayout>
I have edited the post because I omitted part of the code to make it simpler but I think I may suppressed the problem too. It runs in a endless loop, could be this the mistake?
I been trying to figure out how to change the font type of a TextView via an XML. As far as I got was this: Typeface.create("Arial", Typeface.BOLD_ITALIC); And I'm not sure if it even works. I would rather do this on the XML layout.
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View 3 Replies View RelatedI want to change the color of a substring while it is drawed in a text view. For example, if I have this text: "Hello this is a text in black color and (COLOR_RED_BEGIN)this is a text in red color. (COLOR_RED_END)", then when the text view draws the text the substring "this is a text in red color." must be drawn in red.
View 2 Replies View RelatedI have a gallery widget and in that i had a view with linear layout which has a edit text inside. When it launches on device the edittext box shows but has no text visible.
However when i scroll to next view in gallery it shows text and when it comes to focus and centered the text disappears.
If i replace gallery with grid or a horizontal view I can see the text on edit text.
Can you please advise what I might be doing wrong here. Why the text disappears.
I'm stuck around issue of TextView. I have string which has around 2000+ characters also has some HTML in it. I'm using below code to display this TextView. Hi, this is just testing for dynamic all about you can know. So lets move on to new topic of which was never closed. So lets go bye " All characters get replace Why is it so ? I tried adding/removing/increasing min-height / max- height. Please can any tell me that is it bug in android that it cant handle long String in TextView?
View 2 Replies View RelatedDo I need to create a new activity to view text written in a text box?
For example,
I want to see - "Hello"+ text written in a text box.
I have a textview placed vertically in an activity.. I Want the text within the textview to be shown as bottom to top facing right side.
My XML file is:
CODE:..................
In Android can the OnLongClickListener be used with EditTexts and TextViews or just Buttons?
View 2 Replies View RelatedFirst off, sorry about the large screen. I am trying to get the text to wrap but am currently unable to do so. I have tried android:layout_width="fill_parent", android:scrollHorizontal="false", android:width="0dip" all of which suggested in another question. Does anyone have any idea how I can achieve text wrapping? Here's a sample of the xml: Code...
View 2 Replies View RelatedI 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.
I have a selection for some items using a spinner widget. At the moment the spinner will load a simple Textview and show the name of the item.It is possible to define an own view to show inside the spinner row? I would suspect it being similar to a custom List row.I simply want to show an individual icon left from the spinner text for each item in the list.
View 1 Replies View RelatedI've tried to add a TextView before a ListView in a LinearLayout. The result is that the ListView wont show at all. The same thing happens if I put the TextView after the ListView, but then I will only see the ListView. Is there a way to get a text view above the ListView without to much of a hassle?
View 10 Replies View RelatedI have a click event hooked up to my listview.I need to pass a string param to the new intent based on which listitem they clicked on. The value I want to pass is in the listitem called txt_Genus. How do I get that value out of the listitem to pass to the intent?
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View 1 Replies View RelatedI am on Android 2.1 and I have one multi column Custom listview Using BaseAdapter with an editable edittext at the end of the listview. If the data in the listview do not contain the data of user choice then user should be able to enter data. If the data is already there in the list user will be able to select the data using custom selector. If a selection is made in the list view and user wanted to enter data in the text field at the bottom after selection then the marker in the list view should be unselected. I tried to use onclick() method on edit text using click listener. First time when it is clicked, edit text is getting focus and onclick() method is not fired. And when it is clicked second time, onclick() method is fired and notifyDataSetChanged() method is called. I tried to call the notifyDataSetChanged() method from the Focus Listener, list view selection is gone in my first attempt and edit text is not receiving any data input from the keyboard (frozen).
View 1 Replies View RelatedRecently, I program for the Android platform. I have a question about the text. Is there any way to display the text without using the XML? I also want the text to be able to show in each class.
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Here I can pass only single view , so looking for a view which can have both TEXT and PROGRESS ICON.
I am making a list by this code...
* and want to add a text view on the top of list...but it should not be the list item*.
I have copied a text file to my sd card and i need to open it. But how do i do that?
I expected some File explorer or at least to open it in the browser but i cant seem to find out how.
I have a HTC Tattoo. Does it not come with a default file explorer?
I have a text view in the middle of a linear layout that I want vertical scrolling with I have set the flag for scrollbars vertical and it is showing up, but you can't actually scroll the text.
View 5 Replies View RelatedCoreStartHere.java
public class CoreStartHere extends TabActivity {
t = getTabHost();
t.newTabSpec("tTask");
t.setIndicator(...);
t.setContent(new Intent().setClass(this, T1Task.class);
} t1Task.java
T1Task extends Activity {
onCreate(Bundle ...) {
:
myListview = (ListView) findViewById(R.id.hdListView);
myEditText = (EditText) findViewById(R.id.hdEditText);
hdItems = newArrayList <String>();
aa = new ArrayAdapter <String>(this, R.layout.hditemview, hdItems);
:
setOnKeyListener (new OnKeyListener() {
onKey(...) {
:
hdItems.add(0, myEditText.getText().toString());
aa.notifyDatasetChanged();
:
} } } }
hditemview.xml
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
class="com.a1.hd.hdRecordTaskListItemView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="10dp"
android:scrollbars="vertical"
android:textColor="@color/HD_Text"
android:fadingEdge="vertical"
/>hdRecordTaskListItemView.java
hdRecordTaskListItemView extends TextView {
// has 3 constructors
// onDraw
}
None of the constructor in hdRecordTaskListItemView get invoked and not surprisingly onDraw does not get called either. The text appears with the default style. The onDraw is supposed to draw on the "canvas".
Is there a way to include the small circular degrees symbol to a Text View? This would be for temperature readings, as in degrees Celsius or Fahrenheit. I'm finding this an awkward question to Google, and wondering if anyone has done this program apically before.
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