Android Toast消息显示

Question

I have list of product. When the user click on the row, the Toast msg will be displayed the name of the product.

I want to display the Toast on the each product row line.I want to show the Toast in the place where user click on list' row

See my picture;

Currently displaying center of List:

I did like this :

tablerow.setOnClickListener(new View.OnClickListener() {

    public void onClick(View view) {

        Toast prName = Toast.makeText(RetailerOrderActivity.this,
            " Name : " + productList.get(Integer.parseInt(view.getTag().toString())).getDescription(),
            Toast.LENGTH_SHORT);
        prName.setGravity(Gravity.AXIS_SPECIFIED, 0, 0);
        prName.show();
    }
});

Answer 1

Try this,

int[] values= new int[2];
view.getLocationOnScreen(values);
int x = values[0];
int y = values[1] ;

toast.setGravity(Gravity.TOP|Gravity.LEFT, x, y);

Answer 2

The 2nd and 3rd params of setGravity() are x and y offsets from the constant specified in the 1st param. You will need to get the x&y position of the row view object you wish to position the toast above. Or you could get the x&y of the touch event.

Personally I would start with setGravity(Gravity.TOP|Gravity.LEFT,0,0)

Answer 3

I guess you have an onClick or onItemClick -listener somewhere. If so, a View -parameter is passed to it. The passed View is the view that was clicked (the entry of your list). You can get the Y-position of it by using the getY() -method.

You should always center the Toast horizontally and let the Toast decide it's width.

So your code might look something like this (using an onItemClick -listener):

public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
    // Get the Y-position:
    int y = (int) view.getY();
    // Create the Toast:
    Toast toast = Toast.makeText(RetailerOrderActivity.this,
        " Name : " + productList.get(Integer.parseInt(view.getTag().toString())).getDescription(),
        Toast.LENGTH_SHORT
    );
    // Set the position:
    toast.setGravity(Gravity.CENTER_HORIZONTAL, 0, y);
    // Show the Toast:
    toast.show();
}

I did not test it, but it should work.