I create buttons dynamically based on the size of an array list that i get from another object. For each entry of the arraylist i need to create three buttons each one with different action.
Like this i need to create 3 times the sizes of arraylist number of buttons. If i had only one set of buttons I can write onClick()-method which takes the id of the button but here i have 3 buttons for each entry and need to write 3 different actions for those three buttons.
How could this be done?
Similar thing I have done when i needed a textview for each of my array item.it was like-
String[] arrayName={"abc","def","ghi"};
for(int i=0;i<arrayName.length;i++)
{
TextView tv=new TextView(context);
tv.setPadding(20, 5, 40, 5);
tv.setText(arrayName[i]);
tv.setTextSize(1, 12);
tv.setLayoutParams(new Gallery.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
tv.setTextColor(Color.parseColor("#2554C7"));
tv.setClickable(true);
tv.setId(i);
layout.addView(tv);
}
In same way,you can add button in similar way. and in click event of each of them,you can code for their actions separately.(I have not tried this).So in each iteration,you will have 3 buttons for each of the array item.
Edit - 1:
You can differentiate ids like:
mButton1.setId(Integer.parseInt(i+"1"));
mButton2.setId(Integer.parseInt(i+"2"));
mButton3.setId(Integer.parseInt(i+"3"));
Then you can set click listener on each of the button like mButton1.setOnClickListener... and so on.
Declare a list of buttons:
private List<Button> buttons = new ArrayList<Button>();
Then add each button to this list:
buttons.add(0, (Button) findViewById(id in ur layout));
Inside a for loop give click listener:
Button element = buttons.get(i);
element.setOnClickListener(dc);
where dc is ur object name for your inner class that implements OnClickListener.
To access each button you can give:
Button myBtn;
#Override
public void onClick(View v) {
myBtn = (Button) v;
// do operations related to the button
}
Create the Common Listener class for your button action event and set the used into the setOnClickListener() method
Now set the unique id for the buttons.
Now suppose your class look like this :
class MyAction implements onClickListener{
public void onClick(View view){
// get the id from this view and set into the if...else or in switch
int id = view.getId();
switch(id){
case 1:
case 2:
/// and so on...
}
//// do operation here ...
}
}
set this listener in button like this way.
Button b1 = new Button(context);
b1.setId(1);
b1.setOnClickListenr(new MyAction());
Button b2 = new Button(context);
b2.setId(2);
b2.setOnClickListener(new MyAction());
Related
From this code it creates dynamic buttons accodring to a given value from another layout. I need to get the id of that and add another button (if dynamic button clicks then I need to add another button dynamically).
for (int i = 0; i < value1; i++) {
LinearLayout.LayoutParams paramsIButton = new LinearLayout.LayoutParams
((int) ViewGroup.LayoutParams.WRAP_CONTENT, (int) ViewGroup.LayoutParams.WRAP_CONTENT);
ibutton = new ImageButton(HomePage.this);
ibutton.setImageResource(R.drawable.add);
ibutton.setLayoutParams(paramsIButton);
paramsIButton.topMargin = -70;
paramsIButton.leftMargin = 370;
paramsIButton.bottomMargin = 30;
ibutton.setId(i);
ibutton.getPaddingBottom();
ibutton.setBackgroundColor(Color.WHITE);
ibutton.setAdjustViewBounds(true);
rR.addView(ibutton);
}
If I understood correctly from the additional information you provided on your comment, you need to know when a user clicked on a button. You could set an OnClickListener to your button.
// Somewhere in your activity . . .
#Override
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button button = (Button) findViewById(R.id.button1);
button.setOnClickListener(new OnClickListener(){
public void onClick(View v){
// The button is clicked! Do whatever you want.
}
});
}
// ...
// Rest of the code
// ...
Of course, you should replace R.id.button1 with your button's id.
Seems to me like you need to add an onClickListener for the dynamically added button.
Make your class implement OnClickListener and then add a listener for the dynamic button:
ibutton.setOnClickListener(this);
and add an onClick Listener within your class:
#Override
public void onClick(View v)
{
// do something with this ID
v.getId()
}
I don't know how you keep track of the bulbs and fans, I'd hope you don't do it via the UI elements alone. I'd probably do it a bit differently, creating a data structure to track the bulbs and fans and attach the specific bulb or fan object to the UI element as a tag.
I am populating a table dynamically from a string array.Each row of the table also has a plus and minus button to increment/decrement the value of one column. These buttons are also dynamically created like in the code below. Here how can I detect the exact button upon clicking. i.e; if I click on the '+' button of the 2nd row, how can I get the id of the button clicked for further processing.
plusButton= new Button(this);
minusButton= new Button(this);
createView(tr, tv1, names[i]);
createView(tr, tv2, (String)(names[i+1]));
minusButton.setId(i);
minusButton.setText("-");
minusButton.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT));
plusButton.setId(i);
plusButton.setText("+");
plusButton.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT));`
You can set an onClickListener listener for each button. Use the id of the button from view.getId() method on your onClick() method to identify the button click.
You can add separate listeners for each button like here (assuming that the id you are setting for each button corresponds to a row)
minusButton.setOnClickListener(new View.OnClickListener(){
public void onClick(View v){
// Do some operation for minus after getting v.getId() to get the current row
}
}
);
Edit:
I am assuming your code is like this. Correct me if there is a deviation.
Button minusButton = null;
for(int i = 0; i < rowCount; i++)
{
minusButton = new Button(this);
minusButton.setId(i);
// set other stuff and add to layout
minusButton.setOnClickListener(this);
}
Let your class implement the interface View.OnClickListener and implement the onClick() method.
public void onClick(View v){
// the text could tell you if its a plus button or minus button
// Button btn = (Button) v;
// if(btn){ btn.getText();}
// getId() should tell you the row number
// v.getId()
}
You could do with tags: minusButton.setTag("-") and plusButton.setTag("+").
In your clickListener just get it from your button with view.getTag().
Then switch between your actions comparing the string tag.
Edit:
ID's "should" be unique. The setTag() method may help you if setId() doesn't work for you.
I am trying to do this:
Programatically create 4 buttons on a layout. Then, create an onclick listener for each of the button. Then, based on which button is pressed, will do some logic.
I have created a LinearLayout in my XML file and called it "layout".
So, my codes go something like this:
layout = (LinearLayout)findViewById(R.id.layout);
//Create the array of buttons
Button [] subjectButtons_BT = new Button[4];
for(int i=0; i<4; i++){
subjectButtons_BT[i] = new Button(this);
// Add the button to the layout
layout.addView(subjectButtons_BT[i]);
subjectButtons_BT[i].setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
// if it is the first button, do LOGIC1
// if it is the second button, do LOGIC2 etc
}
});
}
So far, I have managed to create the 4 buttons and I can click on the buttons.
However, I do not know how to the logic in the setOnClickListener part.
I wanted to know which button is pressed. So, I tried using v.getId() but it always returns a -1.
Can someone advise if this is the right way to go? And if so, how to do the logic?
Thanks.
You have two options for identify which dynamic button is clicked.
1) Set ID to the button and compare ID
2) Set Tag to the button if you have come more information about button
and want to access it
1) You can set id to the button and in onClick() method you can get id by button.getId() method and you can compare ids and perform action according to click.
2) If you set tag then you have to get tag by calling button.getTag() method and by this way you can pass object with the button
You can set the id of the buttons after you create them, and then check for that id within the OnClickListener
layout = (LinearLayout)findViewById(R.id.layout);
//Create the array of buttons
Button [] subjectButtons_BT = new Button[4];
for(int i=0; i<4; i++){
subjectButtons_BT[i] = new Button(this);
subjectButtons_BT[i].setId(i);
// Add the button to the layout
layout.addView(subjectButtons_BT[i]);
subjectButtons_BT[i].setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
int id = v.getId();
if (id == 0) {
} else if (id == 1) {
}
//etc.
}
});
}
I am creating a dynamic list in which has 2 buttons (Accept and Reject) and one TextView (Email ID which is unique).
I have to accept/reject the email Id on button click event. My problem is I am not able to get the Id or any other reference to point which accept button i had clicked.
Assign an ID to each button in your view.
Then create a separate OnClickListener for each button, each calling their own method?
If each item in your list has 2 buttons, search for the ID withing the parent container, then add the OnClickListener to the found button.
Create dynamic controll.You have to set some id for your controll
` ////////////Create weekdays button//////////////
Button week_btn = new Button(this);
week_btn.setWidth(55);
week_btn.setHeight(45);
week_btn.setText("days");
week_btn.setGravity(Gravity.TOP);
week_btn.setId(NEW_BTN_SELECT_DAYWEEK_id + i);
cur_lin_layout.addView(week_btn, p);
week_btn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
current_period_id = v.getId() + 500;
lDayFlags = 0;
showDialog(0);
}
});`
just create your own constant id and increase it after creating new controll(button). You set your controll and you can give it from click listner or finviewbyid
I'm creating buttons dynamically ...
for(int i=0; i<colSize;i++){
final Button btn = new Button(this);
btn.setText(SectionName[i]);
btn.setTextSize(10);
btn.setPadding(8, 3,8, 3);
btn.setTextColor(Color.WHITE);
btn.setTypeface(Typeface.SERIF, Typeface.BOLD);
btn.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
//***Every time that I click my button is selected !:)
btn.setSelected(true);
}
});
}
But how could I deselect the other buttons that were selected, I just want one Button selected! :)
The brutal way (works if you have few buttons) - save your button references and create private method which loops through your buttons and deselects once you don't need
Extend your button class and make it listen for custom event which is generated when one of the buttons is clicked
Look at the RadioGroup implementation
Variation of #1. Instead of creating separate listeners for your buttons create just one and reuse it for all buttons. Extend that listener from OnClickListener and add List field. Each time you assign listener to the button add button reference to that list. Now, when onClick is triggered simply loop through the list and disable "other" buttons
Declare a variable to store the Id of the Clicked Button ::
private int EnabledButton;
set an ID on every button when are created ::
btn.setId(i);
or a tag ::
btn.setTag(i);
then in that Listener get the "EnabledButton", and call a function to deselect the other buttons::
btn.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
EnabledButton=btn.getId();
DeselectButtons();
btn.setSelected(true);
}
});
The Function to deselect the other Buttons ::
public void DeselectButtons() {
for(int i=0; i<NumberofButtons;i++){
if (EnabledButton!= i)
this.findViewById(i).setSelected(false);
}
}