我怎么知道 EditText 何时失去焦点?

问题描述

当 EditText 失去焦点时，我需要捕捉，我已经搜索了其他问题，但没有找到答案.

I need to catch when an EditText loses focus, I've searched other questions but I didn't find an answer.

我像这样使用OnFocusChangeListener

OnFocusChangeListener foco = new OnFocusChangeListener() {

    @Override
    public void onFocusChange(View v, boolean hasFocus) {
        // TODO Auto-generated method stub

    }
};

但是，它对我不起作用.

But, it doesn't work for me.

推荐答案

实现setOnFocusChangeListener的onFocusChange，hasFocus有个布尔参数.如果这是错误的，您就失去了对另一个控件的关注.

Implement onFocusChange of setOnFocusChangeListener and there's a boolean parameter for hasFocus. When this is false, you've lost focus to another control.

 EditText txtEdit = (EditText) findViewById(R.id.edittxt);

 txtEdit.setOnFocusChangeListener(new OnFocusChangeListener() {          
        @Override
        public void onFocusChange(View v, boolean hasFocus) {
            if (!hasFocus) {
               // code to execute when EditText loses focus
            }
        }
    });

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