[android-developers] Re: How to create TextView without write the XML file
Thanks for the suggestions San and Fllip. I have tried the example
that San gave but still errors. Here's the revised code in the
main.xml file:
package com.HelloWorld;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
public class Hello extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// start code here
tv = (TextView) findViewById(R.id.TextView01);
tv.setText(This is sample.);
Button button = (Button) findViewById(R.id.Button01);
button.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
Toast.makeText(Hello.this, Hello World,
Toast.LENGTH_SHORT).show();
tv.setText(Button Clicked);
}
});
}
}
Errors are:
for the line: tv = (TextView) findViewById(R.id.TextView01);
tv can not be resolved to a variable
for the line: tv.setText(This is sample.); tv can not be
resolved
for the line: tv.setText(Button Clicked); tv can not be
resolved
Any ideas why the errors?
On Aug 31, 4:56 pm, San sanees...@gmail.com wrote:
As Havlicek said, create thetextviewusing findViewByID and set the
text when button is clicked.
Sample code:
tv = (TextView) findViewById(R.id.TextView01);
tv.setText(This is sample.);
Button button = (Button) findViewById(R.id.Button01);
button.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
tv.setText(Button Clicked);
}
});
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[android-developers] Re: How to create TextView without write the XML file
As a newbie, I am just trying to program the various functions to ensure that I am doing things right (gui wise). An example would be to set a default template with textview, editview, buttons, etc and just changing the parameters of those objects either by direct (as by this code) or by calling a class (method). I have done this with standard java but not in a gui environment. That is why I have created this simple Hello World example, and attempting to add other objects to see if I can make it work once it is compiled. Hope this answers your question. On Aug 31, 4:59 am, parag parag.shetgaon...@gmail.com wrote: Any suggestions on why I am getting the false reading -- in the xml , set the button propert android:clickable as true, anyone can suggest on how to place the results in aTextViewvia a button click, that would be appreciated. as i can c u have the listener to the button, on click can u be specific what exact result u need? wether u need to change the text... etc. u can use tv.XXX specifically to change the required properties -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Re: How to create TextView without write the XML file
You still need to specify the tv variable type (of course, think about it!!!). TextView tv = (TextView) findViewById(R.id.TextView01); Best regards, Filip Havlicek 2010/9/1 rb rbs...@gmail.com As a newbie, I am just trying to program the various functions to ensure that I am doing things right (gui wise). An example would be to set a default template with textview, editview, buttons, etc and just changing the parameters of those objects either by direct (as by this code) or by calling a class (method). I have done this with standard java but not in a gui environment. That is why I have created this simple Hello World example, and attempting to add other objects to see if I can make it work once it is compiled. Hope this answers your question. On Aug 31, 4:59 am, parag parag.shetgaon...@gmail.com wrote: Any suggestions on why I am getting the false reading -- in the xml , set the button propert android:clickable as true, anyone can suggest on how to place the results in aTextViewvia a button click, that would be appreciated. as i can c u have the listener to the button, on click can u be specific what exact result u need? wether u need to change the text... etc. u can use tv.XXX specifically to change the required properties -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: How to create TextView without write the XML file
I knew there was something that I missed. Thanks to all who shed
light on this thread. Here's the final code for those newbies who may
have the same problem.
package com.HelloWorld;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
public class Hello extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// start code here
// declare tv object by findViewByID
final TextView tv = (TextView) findViewById(R.id.TextView01);
// set TextView's text property to a new string upon launch of
app
tv.setText(This is sample.);
// declare button object by findViewByID
Button button = (Button) findViewById(R.id.Button01);
// Method if you click the button
button.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// this is a pop up message then goes away
after a short period of
time
Toast.makeText(Hello.this, Hello World,
Toast.LENGTH_SHORT).show();
// this changes the text in the TextView object
to the said string
tv.setText(Button Clicked);
}
});
}
}
On Sep 1, 2:26 am, Filip Havlicek havlicek.fi...@gmail.com wrote:
You still need to specify the tv variable type (of course, think about
it!!!).
TextView tv = (TextView) findViewById(R.id.TextView01);
Best regards,
Filip Havlicek
2010/9/1 rb rbs...@gmail.com
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[android-developers] Re: How to create TextView without write the XML file
Any suggestions on why I am getting the false reading -- in the
xml , set the button propert android:clickable as true,
anyone
can suggest on how to place the results in a TextView via a button
click, that would be appreciated.
as i can c u have the listener to the button,
on click
can u be specific what exact result u need?
wether u need to change the text... etc.
u can use
tv.XXX specifically to change the required properties
On Aug 28, 8:28 pm, rb rbs...@gmail.com wrote:
As a newbie, I have been reading posts in learning how to do different
functions. Using the Hello World example, I added a textview object
to this application but the results come back as false on the screen.
Here's my code:
main.xml:
?xml version=1.0 encoding=utf-8?
RelativeLayout android:id=@+id/RelativeLayout01
android:layout_width=fill_parent android:layout_height=fill_parent
xmlns:android=http://schemas.android.com/apk/res/android;
Button android:id=@+id/Button01
android:layout_width=wrap_content
android:layout_height=wrap_content android:text=Click Me
android:layout_centerInParent=true/Button
TextView android:text=@+id/TextView01 android:id=@+id/TextView01
android:layout_below=@id/Button01
android:layout_height=wrap_content
android:layout_width=fill_parent/TextView
/RelativeLayout
-----
Hello.java
package com.HelloWorld;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
public class Hello extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// start code here
TextView tv = new TextView(this);
tv.setText(This is sample.);
Button button = (Button) findViewById(R.id.Button01);
button.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
Toast.makeText(Hello.this, Hello World,
Toast.LENGTH_SHORT).show();
}
});
}
}
-----
Note that the example included a clickable button which has a popup to
say Hello World. That works just fine, but setting the text in the
TextView comes out as false. Originally I wanted to click on the
button and present the results in a TextView, but I was unable to do
that unless someone can shed some light on that.
Any suggestions on why I am getting the false reading and if anyone
can suggest on how to place the results in a TextView via a button
click, that would be appreciated.
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[android-developers] Re: How to create TextView without write the XML file
As Havlicek said, create the textview using findViewByID and set the
text when button is clicked.
Sample code:
tv = (TextView) findViewById(R.id.TextView01);
tv.setText(This is sample.);
Button button = (Button) findViewById(R.id.Button01);
button.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
tv.setText(Button Clicked);
}
});
On Aug 31, 4:59 am, parag parag.shetgaon...@gmail.com wrote:
Any suggestions on why I am getting the false reading -- in the
xml , set the button propert android:clickable as true,
anyone
can suggest on how to place the results in a TextView via a button
click, that would be appreciated.
as i can c u have the listener to the button,
on click
can u be specific what exact result u need?
wether u need to change the text... etc.
u can use
tv.XXX specifically to change the required properties
On Aug 28, 8:28 pm, rb rbs...@gmail.com wrote:
As a newbie, I have been reading posts in learning how to do different
functions. Using the Hello World example, I added a textview object
to this application but the results come back as false on the screen.
Here's my code:
main.xml:
?xml version=1.0 encoding=utf-8?
RelativeLayout android:id=@+id/RelativeLayout01
android:layout_width=fill_parent android:layout_height=fill_parent
xmlns:android=http://schemas.android.com/apk/res/android;
Button android:id=@+id/Button01
android:layout_width=wrap_content
android:layout_height=wrap_content android:text=Click Me
android:layout_centerInParent=true/Button
TextView android:text=@+id/TextView01
android:id=@+id/TextView01
android:layout_below=@id/Button01
android:layout_height=wrap_content
android:layout_width=fill_parent/TextView
/RelativeLayout
-----
Hello.java
package com.HelloWorld;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
public class Hello extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// start code here
TextView tv = new TextView(this);
tv.setText(This is sample.);
Button button = (Button) findViewById(R.id.Button01);
button.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
Toast.makeText(Hello.this, Hello World,
Toast.LENGTH_SHORT).show();
}
});
}
}
-----
Note that the example included a clickable button which has a popup to
say Hello World. That works just fine, but setting the text in the
TextView comes out as false. Originally I wanted to click on the
button and present the results in a TextView, but I was unable to do
that unless someone can shed some light on that.
Any suggestions on why I am getting the false reading and if anyone
can suggest on how to place the results in a TextView via a button
click, that would be appreciated.- Hide quoted text -
- Show quoted text -
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