Reputation: 4111
In my android application, there are number of images in drawable folder. In my layout there are two buttons: Back and Next buttons. On clicking next and back buttons 2 different images get loaded on the same layout(common for all images).
Problem:I am able to load images on Next/Back button's click but after reaching the last image, I want to make my Next button disable and same for the back button.As the user is on the first image the back button should be disabled. Code is as:
public class SequencerActivity extends Activity implements OnClickListener
{
private int imageCounter = 0;
private ImageView imageLoader;
private int[] imageList = {R.drawable.image_wo_lbl_0, R.drawable.image_wo_lbl_1, R.drawable.image_wo_lbl_2, R.drawable.image_wo_lbl_3, R.drawable.image_wo_lbl_4, R.drawable.image_wo_lbl_5,
R.drawable.image_wo_lbl_6, R.drawable.image_wo_lbl_8, R.drawable.image_wo_lbl_9,R.drawable.image_wo_lbl_10, R.drawable.image_wo_lbl_11};
@Override
public void onCreate(Bundle savedInstanceState)
{
setContentView(R.layout.parent_frame);//this one is the common parent layout for all image views
super.onCreate(savedInstanceState);
/*requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);*/
//int image1 = R.drawable.image_w_lbl_0;
imageLoader = (ImageView) findViewById(R.id.imageLoader);
//imageLoader.setImageResource(image1);
ImageButton next = (ImageButton) findViewById(R.id.next);
ImageButton back = (ImageButton) findViewById(R.id.back);
next.setOnClickListener(this);
back.setOnClickListener(this);
//show the default image
this.loadImage(imageList[imageCounter]);
}
@Override
public void onClick(View v)
{
int imagePath = 0;
// TODO Auto-generated method stub
switch (v.getId())
{
case R.id.next:
Log.i("Tag","tag");
if(imageCounter < imageList.length)
{
imageCounter++;
imagePath = imageList[imageCounter];
if (imageCounter==(imageList.length)-1)
{
//how to make my next button disable
}
}
break;
case R.id.back:
if(imageCounter > 0)
{
imageCounter--;
imagePath = imageList[imageCounter];
if (imageCounter==0)
{
//how to make my back button disable
}
}
break;
}
this.loadImage(imagePath);
}
private void loadImage(int imagePath)
{
imageLoader.setImageResource(imagePath);
}
}
Upvotes: 20
Views: 90960
Reputation: 1175
For Kotlin you can use this
override fun onClick(v: View) {
when (v.id) {
R.id.cancel_button -> {
button.isClickable = false
button.isEnabled = false
}
}
}
Upvotes: 1
Reputation: 26372
With kotlin you can disable a button with
button.isEnabled = false
or to disable clicking on it
button.isClickable = false
Upvotes: 3
Reputation: 809
more preferred solution is,
onclick(){
btn.setEnabled(false);
btn.setClickable(false);
//yourwork
myWork();
}
myWork(){
//your tasks.
btn.setEnabled(true);
btn.setClickable(true);
}
As a link can be ignored easily, I had to repeat this again and again
Upvotes: 8
Reputation: 1720
just insert two extra images in your drawable folder one for disabled right arrow and one for disabled left arrow.
now try this
case R.id.next:
Log.i("Tag","tag");
if(imageCounter < imageList.length)
{
imageCounter++;
imagePath = imageList[imageCounter];
if (imageCounter==(imageList.length)-1)
{
//disabling right button by changing image from following code
next.setImageDrawable(getResources().getDrawable(R.drawable.right_disabled));
}
}
break;
case R.id.back:
if(imageCounter > 0)
{
imageCounter--;
imagePath = imageList[imageCounter];
if (imageCounter==0)
{
back.setImageDrawable(getResources().getDrawable(R.drawable.left_disabled));
}
}
break;
Upvotes: 0
Reputation: 6177
case R.id.next:
Log.i("Tag","tag");
if(imageCounter < imageList.length)
{
imageCounter++;
imagePath = imageList[imageCounter];
if (imageCounter==(imageList.length)-1)
{
ImageButton next=(ImageButton)findViewBYId(R.id.next);
next.setEnabled(false);
}
}
break;
case R.id.back:
if(imageCounter > 0)
{
imageCounter--;
imagePath = imageList[imageCounter];
if (imageCounter==0)
{
ImageButton back=(ImageButton)findViewBYId(r.id.back);
back.setEnabled(false);
}
}
break;
Upvotes: 19