动态按钮从另一个类调用 [英] dynamic button calling from another class

问题描述

我在Java / Android的新的，我想通过在那里我有我的定义按钮属性方法。而该方法是用不能完成该项活动的另一个类。

I am new in java/Android, I want to pass method where i have defined my button property. and the the method is is written in another class which can not implement the Activity.

ex

class ViewProvider extends xyz
{
 public Button getButton(){
       Button one=new Button();
       one.setText("abc");
       one.setTypeface(Typeface.DEFAULT_BOLD);
       //and other properties like color,Gravity ect 
       return one
    }
}

Class calcu extends Activity{
   protected void onCreate(Bundle savedInstanceState) 
      {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.app_list);
        ViewProvider v=new ViewProvider();
       RelativeLayout relativelayout = new RelativeLayout(this);
       relativelayout.addView(v.getButton);
       setContentView(relativelayout);

       }

但我得到一个错误

But i am getting an error

推荐答案

刚刚创建活动的数据类型，并通过构造函数如下

Just create an Activity data type and initialize it through constructor as below

class ViewProvider extends xyz
   Activity activity;
{

     public ViewProvider(Activity activity, JSONObject json) {
                      this.activity = activity;
                 }

    public Button getButton(activity){
    Button one=new Button();
    one.setText("abc");
    return one
}

然后调用方法如下对的onCreate（捆绑savedInstanceState）

ViewProvider v=new ViewProvider(this);
      RelativeLayout relativelayout = new RelativeLayout(this);
      relativelayout.addView(v.getButton);
      setContentView(relativelayout);

这篇关于动态按钮从另一个类调用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！