如何知道关键presses中的EditText [英] how to know key presses in edittext

问题描述

我需要检测每个键preSS无论是软或硬键盘的EditText上。我只需要在同一时间发送的字符中的一个，因为他们是pssed $ P $，并不需要最后的文本字符串。

I need to detect every key press on either a soft or hard keyboard in EditText. I just need to send the characters one at a time as they are pressed and don't need the final text string.

我用用onkey preSS一个EditText都试过了，但碰到了问题，这里没有得到关键presses用软键盘。而textwatcher是不是一个好的选择，因为我需要每个键preSS。 有没有什么解决办法知道所有的主要presses（包括背部，移位，进入..还）

I have tried using an edittext with onkeypress, but ran into the problems here with not getting key presses with soft keyboards. and textwatcher isn't a good option because i need each key press. Is there any solution to know all the keypresses (including back,shift ,enter.. also)

推荐答案

如果你的EditText那么你可以使用TextWatcher interface.In我code search_edit 是的EditText。

if You have EditText then you can used TextWatcher interface.In my code search_edit is edittext.

    search_edit.addTextChangedListener(new TextWatcher() {          
                    @Override
                    public void onTextChanged(CharSequence s, int start, int before, int count) {                                   
                           //here is your code
                            myadapter.getFilter().filter(s);
                            listview.setAdapter(myadapter); 

                    }                       
                    @Override
                    public void beforeTextChanged(CharSequence s, int start, int count,
                            int after) {
                        // TODO Auto-generated method stub                          
                    }                       
                    @Override
                    public void afterTextChanged(Editable s) {
                        // TODO Auto-generated method stub                          

                    }
                });

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