Hi guys. I hope there is someone here who can help...

# android

[ubu]

Hi guys. I hope there is someone here who can help. I have a question regarding EditText , InputFilter and new-line character insertion.

Given this method signature from official docs:

public abstract CharSequence filter (CharSequence source,
                int start,
                int end,
                Spanned dest,
                int dstart,
                int dend)

and these attributes set on `EditText`:

android:inputType="textMultiLine|textNoSuggestions"
android:textIsSelectable="true"

Suppose we have a text FooBar inside our EditText (set with the attributes mentioned above). When placing cursor between these two words (Foo|Bar) and pressing Enter, we get:

source = "\n",
start = 0,
end = 0

dstart = 3,
dend = 3,
dest = "FooBar"

As you see, new-line character "\n" is inserted at the cursor position. This is somewhat expected and this is good. I just need to detect this insertion and but ignore it by returning "" instead of "\n".

Let’s start again. Suppose we have a text FooBar inside our EditText. Let’s place our cursor between these two words (Foo|Bar) and type 123. Now you should have Foo123|Bar. Then press Enter.

This is what I expect:

source = "\n",
start = 0,
end = 0

dstart = 6,
dend = 6,
dest = "Foo123Bar"

As before, I would then return “” instead of “\n”. But stop. This is what I actually got:

source = "",
start = 0,
end = 0

dstart = 6,
dend = 9,
dest = "Foo123Bar"

Why do InputFilter behaviour differ? I might misunderstand something, but this seems to be an inconsistent behaviour. Any idea how to fix it? Or maybe there is an explanation to that.

Inside InputFilter, I need a way to detect a new-line character insertion command, then replace this character by an empty string.

Any help will be very appreciated!