I created buttons dynamically, which is assigned to url address obtained from handlers as settext().
But I am not able to get text of that button,if it is clicked,since arg.gettext() is not working in OnClickListener.
Is there any way to get text of the button which is created dynamically
for ( i = 0; i <itemList.getTitle().size()-1; i++) {
title[i] = new TextView(this);
title[i].setTextColor( -16711936 );
title[i].setTextSize(18);
title[i].setText("Title = "+itemList.getTitle().get(i));
description[i] = new TextView(this);
description[i].setTextColor(-16776961);
description[i].setText("Description = "+itemList.getDescription().get(i)+"......");
more[i]=new Button(this);
more[i].setText(itemList.getLink().get(i));
layout.addView(title[i]);
System.out.println("Title view is set");
layout.addView(description[i]);
//System.out.println("Description view is set");
layout.addView(more[i]);
more[i].setOnClickListener(listener);
}
private OnClickListener listener=new OnClickListener(){
public void onClick(View arg) {
// TODO Auto-generated method stub
String value=(should get the text of the selected button)
}
Any help would be greatly appreciated.
The View in onClick() is your Button.
Just downcast it:
Button btn = (Button) arg;
String btnText = btn.getText();
Related
i have an app that make check box dynamically.
A button and edit text,i insert some thing in the edit text then click button after that a check box with that text appear.
but i have problem with that.
i am completely confuse, i cannot see them!!!! and i do not have any error!!!!????
can some one help me ? :(
...
public int i2 = 0;
...
final EditText et1 = (EditText) findViewById(R.id.editText1);
final Button bnext = (Button) findViewById(R.id.button1);
//
final LinearLayout ll = new LinearLayout(this);
ll.setOrientation(LinearLayout.VERTICAL);
//
bnext.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
//getting text from edit text
String str_et1 = et1.getText().toString();
do {
CheckBox cb = new CheckBox(getApplicationContext());
cb.setId(i2);//set id to each checkbox
cb.setText(str_et1);//set text to each checkbox
ll.addView(cb);
} while (bnext.isDirty());//add when ever i clicked
i2++;//this the counter
}
});
Try this code -
final EditText et1 = (EditText) findViewById(R.id.editText1);
final Button bnext = (Button) findViewById(R.id.button1);
//
final LinearLayout ll = new LinearLayout(this);
LayoutParams params =
new LinearLayout.LayoutParams(
LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT);
ll.setOrientation(LinearLayout.VERTICAL);
ll.setLayoutParams(params);
//
bnext.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
//getting text from edit text
String str_et1 = et1.getText().toString();
do {
CheckBox cb = new CheckBox(getApplicationContext());
cb .setLayoutParams(params);
cb.setId(i2);//set id to each checkbox
cb.setText(str_et1);//set text to each checkbox
ll.addView(cb);
} while (bnext.isDirty());//add when ever i clicked
i2++;//this the counter
}
});
Hope this code helps you!!
if its not working please let me know i will try to help more.
A check box alone is not a visible component. You will need to have a LayoutParam, then attach the checkbox to it to make it visible.
In my application,on press of a button "Add contact" phone book gets open and then user selects a contact that get displayed in Edittext View and when another button "Add More Contacts" is pressed, a another Edit-Text View gets displayed on the top for which i can again select the contact from phone book. But the problem that i am facing is that i want that user can only add up to 5 Edit Text .
I am using the following code, but its force crashing the application. Please help.
And also i want the Edit Text Views to be non editable, for which i tried editable=false but its working only for the first Edit Text View not on the other Views, that user adds afterwards.
int id = 1;
layoutLinear = (LinearLayout) findViewById(R.id.mLayout);
btn_addmore_cntct = (Button) findViewById(R.id.baddmorecontacts);
btn_addmore_cntct.setOnClickListener(OnClick());
EditText editview = new EditText(this);
editview.setText("Add more");
editview.setEnabled(false);
editview.setFocusable(false);
}
// implementing OnClickListener OnClick() method for "btn_addmore_cntct"
// button
private OnClickListener OnClick() {
// TODO Auto-generated method stub
// changing return type "null" to "new OnClickListner"
return new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(layoutLinear.getChildCount()>5){
}else{
final EditText tab = new EditText(getApplicationContext());
tab.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT));
tab.setId(id);
id++;
layoutLinear.addView(tab,0);
tab.requestFocus();
}
Just check number of layoutLinear child
if(layoutLinear.getChildCount()>5){
//nothing to do
}else{
//create new EditText and add to layoutLinear
}
user this code to disable EditText
edittext.setEnabled(false);
edittext.setFocusable(false);
You can use following way.
int temp;
public void onCreate(Bundle savedinstance) {
super.onCreate(savedinstance);
setContentView(R.layout.yourlayout);
temp=1;
layoutLinear = (LinearLayout) findViewById(R.id.mLayout);
btn_addmore_cntct = (Button) findViewById(R.id.baddmorecontacts);
btn_addmore_cntct.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(temp<=5){
EditText tab = new EditText(getApplicationContext());
tab.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT));
tab.setEnabled(false);
tab.setFocusable(false);
layoutLinear.addView(tab);
temp++;
}else{
//Print message to user Cant add more editText.
}
}
});
}
Let me know its working or not.
I have created a set of TextViews programmatically using a for loop. This what i have tried.
for(int i=1; i<5; i++){
valueTV = new TextView(AddMyVehicle.this);
linearLayout.addView(valueTV);
vehicleModelReturned = myVehicleData.getString("VehicleModel"+x, "");
valueTV.setText(vehicleModelReturned);
valueTV.setGravity(Gravity.CENTER_HORIZONTAL);
valueTV.setTextSize(TypedValue.COMPLEX_UNIT_SP,22);
valueTV.setTextColor(Color.parseColor("#333333"));
i++;
}
this.valueTV.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
valueTV.setText("Hello");
}
});
I need to change the text of clicked TextView to "Hello". How can i achieve this?
You have to add a listener to all your TextView created.
And be careful, you incremented i twice : one in the first line of the for and another one in the end of the for.
for (int i = 1; i < 5; i++)
{
final TextView valueTV = new TextView(AddMyVehicle.this);
linearLayout.addView(valueTV);
vehicleModelReturned = myVehicleData.getString("VehicleModel" + x, "");
valueTV.setText(vehicleModelReturned);
valueTV.setGravity(Gravity.CENTER_HORIZONTAL);
valueTV.setTextSize(TypedValue.COMPLEX_UNIT_SP, 22);
valueTV.setTextColor(Color.parseColor("#333333"));
valueTV.setId("test");
valueTV.setOnClickListener(new OnClickListener()
{
#Override
public void onClick(View v)
{
TextView tv = (TextView) v;
tv.setText("Hello");
}
});
}
First, set the OnClickListener to all the TextViews you create, not just the last one. That is, move the setOnClickListener() inside the for loop.
Second, in onClick(), change the text of the clicked view and not again the last one you created. The View v param is the view that was clicked. You can cast it to TextView.
Say I have buttons that are created dynamically:
for(int j = 0; j < spirits.length;
j++){
Button imgBtn = new Button(v.getContext());
imgBtn.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
imgBtn.setMinimumWidth(100);
imgBtn.setMinimumHeight(100);
imgBtn.setId(j+1);
imgBtn.setTag(spirits[j]);
imgBtn.setText(spirits[j]);
imgBtn.setOnClickListener(new SpiritsClickListener());
cabinet_layout.addView(imgBtn);
}
I want to change the text of the button every time it's pressed (On - Off)
How can I reference the buttons within the OnClickListener class?
in your onClickListener, you have a function called onClick(View v){} where v is the View that was clicked. You may use v to get details about the button, including its ID. You can also take this view, and if you know it is a button, cast it to a button.
Button clicked = (Button)v;
You can then use it in your javacode just as you would normally use a button.
Why don't you just call new OnClickListener() inside that loop like this
for(int j = 0; j < spirits.length;j++){
Button imgBtn = new Button(v.getContext());
imgBtn.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
imgBtn.setMinimumWidth(100);
imgBtn.setMinimumHeight(100);
imgBtn.setId(j+1);
imgBtn.setTag(spirits[j]);
imgBtn.setText(spirits[j]);
imgBtn.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
//do what you need to do here
}
});
cabinet_layout.addView(imgBtn);
}
Create an OnClickListener for dynamically created buttons as:
// Create Listener for Button
private OnClickListener SpiritsClickListener = new OnClickListener()
{
#Override
public void onClick(View view) {
// TODO Auto-generated method stub
Button btn = (Button) view;
String btnText = btn.getText();
if(btnText.equalsIgnoreCase("On")){
btn.setText("Off");
}else{
btn.setText("On");
}
}
};
add this Listener to dynamically created buttons as:
imgBtn.setOnClickListener(SpiritsClickListener);
A table is being created such that:
TableLayout layout = new TableLayout(this);
layout.setLayoutParams(new TableLayout.LayoutParams(4,5));
layout.setPadding(1, 1, 1, 1);
for(int i=0; i<7; i++) {
TableRow tr = new TableRow(this);
for(int j=0; j<6; j++) {
Button b = new Button(this);
b.setText("0");
b.setOnClickListener(buttonListener);
tr.addView(b);
}
layout.addView(tr);
}
super.setContentView(layout);
The OnClickListener buttonListener is:
View.OnClickListener buttonListener = new View.OnClickListener() {
public void onClick(View v) {
Button thisButton = (Button) findViewById(((Button)v).getId());
//thisButton.setText(Integer.toString(Integer.parseInt((String) thisButton.getText()) + 1));
thisButton.getText();
}
};
The call to thisButton.getText() throws a NullPointerException, and I'm not sure why. Can anyone help me out?
TableLayout layout = new TableLayout(this);
layout.setLayoutParams(new TableLayout.LayoutParams(4,5));
layout.setPadding(1, 1, 1, 1);
for(int i=0; i<7; i++) {
TableRow tr = new TableRow(this);
for(int j=0; j<6; j++) {
Button b = new Button(this);
b.setText("0");
b.setOnClickListener(buttonListener);
tr.addView(b);
}
layout.addView(tr);
}
setContentView(layout);
}
View.OnClickListener buttonListener = new View.OnClickListener() {
public void onClick(View v) {
Button btn1 = (Button)v;
//thisButton.setText(Integer.toString(Integer.parseInt((String) thisButton.getText()) + 1));
String name = btn1.getText().toString();
}
};
I have tested this will work.
When you create view dynamically you don't to assgin an id to it.
you work using the object of the view.
I hope it makes sense to all the people who are curious to set id for dynamic buttons.
One problem in your code.
Have not set id of Button
b.setText("0");
b.setOnClickListener(buttonListener);
b.setId(i);
Assumption:
I can't see anything regarding setting id to button
The below line may causing exception:
Button thisButton = (Button) findViewById(((Button)v).getId());
Why are you doing? Instead you are already passing a view in click action: View v
So you can do straight way like:
String strText = ((Button) v).getText();
It mean your thisButton is probably null, because the statement before that was not successful.
Button thisButton = (Button) findViewById(((Button)v).getId());
does not look right. Usually the paramenter inside findViewById() should be a resource id.
such as
Button thisButton = (Button) findViewById(R.id.button);
R.id.button is defined by your layout xml.
You may simply get the text from the passed view, instead of recreating a button.
public void onClick(View v) {
if(v instanceof Button)
String text = ((Button) v).getText();
}