Android登录界面EditText一键清除内容封装

最新推荐文章于 2024-03-23 03:52:11 发布

原创最新推荐文章于 2024-03-23 03:52:11 发布 · 882 阅读

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#Android #EditText #登录界面

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本文介绍了一种自定义EditText的方法，并详细展示了如何通过监听文本变化来显示或隐藏删除图标，同时处理了焦点变化的情况。

怎么简单怎么来，本来是自定义EditText嵌入到项目里发现效果不理想，自定义EditText在XML中设置无背景无效.........

private void clearEditText(final EditText editText, final ImageView delImageView) {

    editText.addTextChangedListener(new TextWatcher() {

        @Override
        public void onTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {

        }

        @Override
        public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,
                                      int arg3) {
        }

        @Override
        public void afterTextChanged(Editable arg0) {
            if (editText.getText().length() != 0) {
                delImageView.setVisibility(View.VISIBLE);
            } else {
                delImageView.setVisibility(View.INVISIBLE);
            }
        }
    });
    editText.setOnFocusChangeListener(new View.OnFocusChangeListener() {
        @Override
        public void onFocusChange(View arg0, boolean arg1) {
            if (editText.getText().length() != 0) {
                delImageView.setVisibility(View.VISIBLE);
            } else {
                delImageView.setVisibility(View.INVISIBLE);
            }
            if (arg1) {
                //得到焦点
            } else {
                //失去焦点，删除图标隐藏
                delImageView.setVisibility(View.INVISIBLE);
            }
        }
    });

    delImageView.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View arg0) {
            SharedPreferences.Editor editor = mContext.getSharedPreferences("settings", Context.MODE_PRIVATE).edit();
            editText.setText("");
            if (editText.getId() == R.id.et_settings_user_information_user_name) {
                editor.putString("UserName", null);
                gMyApplication.UserName = null;
            } else if (editText.getId() == R.id.et_settings_user_information_user_password) {
                editor.putString("Password", null);
                gMyApplication.Password = null;
            }
            editor.apply();
            editor.commit();
        }
    });
}