在Android中如何在不单击按钮的情况下键入时将EditText值获取到textview [英] How to get EditText value to textview at the time of typing without button click in android

问题描述

如何在不单击按钮的情况下在用户输入时从EditText读取数据到textview

How to read data from EditText to textview at user input without button click

推荐答案

尝试在Edittext上使用textwatcher并使用可用方法更新textview.

Try using textwatcher on Edittext and update textview using available methods.

TextWatcher textWatcher = new TextWatcher() {
    @Override
    public void beforeTextChanged(CharSequence s, int start, int 
            count, int after) {

    }

    @Override
    public void onTextChanged(CharSequence s, int start, int before, int count) {

    }

    @Override
    public void afterTextChanged(Editable s) {

    }
};

textView.addTextChangedListener(textWatcher);

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