如何知道android textview是用文本设置的

Question

如果使用文本设置android textview,是否会调用任何回调

Answer 1

添加一个TextWatcherTextView,用于在TextView中观察文本更改:

TextView textView=(TextView)findViewById(R.id.txtview);
    textView.addTextChangedListener(new TextWatcher() {

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

        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count,
                int after) {

        }

        @Override
        public void afterTextChanged(Editable s) {

             //here you will get changed text in textview
        }
    });