setInputType为EditText而不丢失多行功能？

Question

For some reason using setInputType for EditText forces it into a single line. I need the EditText to accept NumberSigned .

I tried using InputFilter such that it returns "" if source.charAt(i) is not 0-9 or dot or + or -

But how to allow newline character? I need to be able to enter in multiple lines in the EditText.

I tried both in xml and code:

et = new EditText(this);

et.setText(getResources().getString(R.string.default_value));

et.setInputType(InputType.TYPE_NUMBER_FLAG_SIGNED);

et.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,LinearLayout.LayoutParams.WRAP_CONTENT));

linearLayout.addView(et);

the setText enters a string:

<string name="default_value">1,2,3\n4,5,6\n7,8,9</string>

which is shown as 1 2 3 4 5 6 7 8 9.

I tried using setLines() and setMaxLines() but no luck. I think the reason it is forced into a single line is because newline character is not a part of InputType NumberSigned.

Answer 1

If you want input as signed integer, then you can use

...

android:digits="0123456789 \\n"

...

PS : Don't forget the SPACE between 9 and \\n