I want to remove a Button in his own onClick method after it's clicked. I tried it with the normal way:
layout.removeView(save);
But the button will not be removed and I get no error. If I want to add the Button I get an error because the button already excists.
I think it isn't working because I trie to remove the button during his OnClickHandler is active. So my Question is how can I remove the button after he is clicked?
Here's the complete, fully tested solution:
Button button = (Button) findViewById(R.id.button1);
button.setOnClickListener(new OnClickListener() {
public void onClick(View view) {
view.setVisibility(View.GONE);
}
});
You can also completely remove the view from the layout like this (also tested):
Button button = (Button) findViewById(R.id.button1);
button.setOnClickListener(new OnClickListener() {
public void onClick(View view) {
ViewGroup parentView = (ViewGroup) view.getParent();
parentView.removeView(view);
}
});
Try to set its state with button.setVisibility(Visibility.GONE)
How about just hide it? e.g. in your button onclick handler you can do something like:
button.setVisibility(View.GONE);
Related
I have 1 function to print the text of the button, and i use that function for the 3 button, how do i know in what button the user click? (sorry but my english is low)
Example:
public void function(View view) {
TextView text = (TextView) findViewById(R.id.textView);
Button button1= (Button) findViewById(R.id.button3);
Button button1= (Button) findViewById(R.id.button4);
Button button1= (Button) findViewById(R.id.button5);
text.setText(button <?> .getText()); }
is the number of the button the user click
Its any way to know in which button the user click?
Please help, Thanks.
you can define one click listener and set this listener for all buttons. For example:
private OnClickListener genericListerner = new OnClickListener() {
public void Click(View v) {
switch(v.getId())
{
case R.id.button3:
text.setText(button3.getText().toString());
break;
case R.id.button4:
text.setText(button4.getText().toString());
break;
case R.id.button5:
text.setText(button5.getText().toString());
break;
default:
//do something
}
};
and you set the listeners like the following:
button3.setOnClickListener(genericListener);
button4.setOnClickListener(genericListener);
button5.setOnClickListener(genericListener);
I am not sure whether this is what you are asking, but what this code basically does is that, if you click button 3 it sets the textview's text to button 3's text, if you click button 4 it sets the textview's text to button 4's text and if you click button 5, it sets the textview's text to button 5's text.
Hope this helps.
The view that is passed in is the one that was clicked, therefore it has the id.
view.getId() == R.id.button3
If you still need help, share more of your code.
Well you will require some onclick listeners for the button, you can then set an id or name in the onclick e.g
final Button button1 = (Button) findViewById(R.id.button_id);
button1.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
text.settext("Button1 Clicked")
}
});
Sorry for the weird question, but is it possible to click on two buttons at the same time in android(having two logs, "clicked on b1" and "clicked on b2"), if one totally covers the other one?
This is not ordinarily possible; the top button will absorb the button click event and not pass it on to the one behind it. It is not clear whether or not you want to obtain this behaviour or avoid it, nonetheless, you can force it by propagating the event manually across the click listeners.
Here is one way (there are a few); assume buttonOne is on top of buttonTwo:
final Button buttonOne = (Button) findViewById(...);
final Button buttonTwo = (Button) findViewById(...);
buttonOne.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Log.d("ButtonTest", "ButtonOne clicked");
buttonTwo.performClick();
}
});
buttonTwo.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Log.d("ButtonTest", "ButtonTwo clicked");
}
});
The click event enters the listener on button one, which then causes a click event on button two.
Here is another way which would work (and could be changed to support long click events easily):
final Button buttonOne = (Button) findViewById(...);
final Button buttonTwo = (Button) findViewById(...);
final OnClickListener listenerTwo = new OnClickListener() {
#Override
public void onClick(View v) {
Log.d("ButtonTest", "ButtonTwo clicked");
}
};
final OnClickListener listenerOne = new OnClickListener() {
#Override
public void onClick(View v) {
Log.d("ButtonTest", "ButtonOne clicked");
listenerTwo.onClick(buttonTwo);
}
};
buttonOne.setOnClickListener(listenerOne);
buttonTwo.setOnClickListener(listenerTwo);
Yes, it is possible. You will need to pass the click event that occurs on the foreground view to the background view. You can do this by checking where the click occurs and if it occurs within the view's bounds.
I have 2 buttons to switch between 2 layouts in the same activity: clicking button1 on layout1, it goes to layout 2 (using setContentView). On layout2, clicking button2, it goes back to layout1. Then button1 is no longer responding OnClickListener. I looked into "Input Events" but still couldn't figure it out. What happened and how to fix it?
Thanks in advance!
Button submitBtn;
Button backBtn;
submitBtn = (Button)findViewById(R.id.button1); //on layout1
backButn = (Button)findViewById(R.id.button2); //on layout2
submitBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
setContentView(R.layout.layout2);
}
});
backBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
setContentView(R.layout.layout1);
}
});
You should re-assign listeners when you switch layout, cause when you're calling setContentView old view is destroyed, and new components are created.
You MUST set the contentview when it is time to change the layout, otherwise the views will be null.
I have a button that shows or hides a view. When button get pressed the view is added to layout and a translate animation begins. Second button press will remove the view from the layout.
I user addView(view, 0) to make sure the view is behind all other views. It works generally fine.
The problem occurs when the view is shown and I press the button twice very fast (sort of double click). In that case the view jumps to front during the animation.
How can I prevent this?
Just disable( setEnabled(false) ) the button and enable it in AnimationListener.onAniationEnd().
UPD: ok, that's the code, which illustrates my idea:
final Button btn = (Button) findViewById(R.id.myButton);
View view = (View) findViewById(R.id.myView);
btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
btn.setEnabled(false);
// animation here
addView(view, 0);
}
});
// somewhere else
final Button btn = (Button) findViewById(R.id.myButton);
btn.setEnabled(true);
removeView(view);
I'm having a button in a sliding drawer in a Android Application. The problem is it does not seem to react to any clicks as normal buttons do.
I'm guessing the problem is that it's a different view than buttons on the normal view.
If I implement a button the normal way like this
myAgenda = (Button)findViewById(R.id.BtnMyAgenda);
myAgenda.setOnClickListener(this);
public void onClick(View v) {
switch(v.getId()){
case R.id.BtnMyAgenda:
test.setAnimation(leftLeft);
test.startAnimation(leftLeft);
break;
}
I'm guessing there is something wrong with the above code since the button is in a SlidingDrawer and not in the "normal" view.
Any ideas how to fix the problem?
Here is the code
Register with event listner like below code
button.setOnClickListener(clickButtonListener);
and create this listner for button
private OnClickListener clickButtonListener= new OnClickListener()
{
#Override
public void onClick(View v)
{
if(v == button)
{
}
}
}
I actually found the solution to the problem, I simply created a new view.onclicklistener specific to that button.
final Button button = (Button) findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
}
});