How can I add onClickListener to each ImageView separately?

Question

I have programmatically added a Linear Layout in Android and added ImageViews to it. I used the following code for the same.

LinearLayout layout = (LinearLayout)findViewById(R.id.linear1);     
for(int i=0;i<4;i++)
{
    imagev = new ImageView(this);
    imagev.setLayoutParams(new android.view.ViewGroup.LayoutParams(300,150));
    imagev.setMaxHeight(600);
    imagev.setMaxWidth(600);
    layout.addView(imagev);
}

Answer 1

If i were to implement this, i would give each of the imageviews a specific tag, and then set the same onClickListener to each imageview. Then in the onClickListener, i would check the tag for the imageview that was clicked and do an action depending on whatever imageview was clicked.

    LinearLayout layout = (LinearLayout)findViewById(R.id.linear1);     
    for(int i=0;i<4;i++)
    {
        imagev = new ImageView(this);
        imagev.setLayoutParams(new android.view.ViewGroup.LayoutParams(300,150));
        imagev.setMaxHeight(600);
        imagev.setMaxWidth(600);
        imagev.setTag(i);
        imagev.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                 switch(Integer.valueOf(v.getTag())) {
                      case 0: ...
                              break;
                      case 1: ...
                              break;
                 }
            } 
        layout.addView(imagev);
    }

This would avoid having to have 4 different onClickListener, and give you some cleaner code.

Answer 2

You can do something like this:

myClickListener1 = new View.OnClickListener ...
myClickListener2 ...
myClickListener3 ...
myClickListener4 ...

for(int i=0;i<4;i++)
{
    imagev = new ImageView(this);
    imagev.setLayoutParams(new android.view.ViewGroup.LayoutParams(300,150));
    imagev.setMaxHeight(600);
    imagev.setMaxWidth(600);
    switch(i){
            case 0: imagev.setOnClickListener(myClickListener1);
            break;
            case 1: ...
            ...
    }
    layout.addView(imagev);
}