注册界面设计及实现之（二）注册业务逻辑的实现

业务流程图：

开发步骤： 

• 获取用户输入的账号和密码 
• 使用IF逻辑语句进行业务逻辑判断 
• 根据判断的结果给予用户相应的提示

//Register_Activity.java

   private boolean checkform() {
        if (this.txtRegAccount.getText().toString() == null || this.txtRegAccount.getText().toString().length() == 0) {
            Toast.makeText(getApplicationContext(), "警告：注册账号不能为空", Toast.LENGTH_LONG).show();
            return false;
        }
        if (this.txtRegPassword.getText().toString() == null || this.txtRegPassword.getText().toString().length() == 0) {
            Toast.makeText(getApplicationContext(), "警告：注册密码不能为空", Toast.LENGTH_LONG).show();
            return false;
        }
        if (!(this.txtRegPassword.getText().toString()).equals((this.txtReRegPassword.getText().toString()))) {
            Toast.makeText(getApplicationContext(), "警告:两次密码不一致", Toast.LENGTH_LONG).show();
            return false;
        }
        return true;
    }

运行：