如何从视图类中获取视图？答案

【问题标题】：how to get a view from view class?如何从视图类中获取视图？
【发布时间】：2011-09-12 10:18:34
【问题描述】：

我是 android 的新开发人员。我在该视图类中创建了一个视图类我想将字符串数组值应用到 textview 我的视图类如下：

    class MyView extends View
 {
    Context con;
String messages[]=new String[]{"hello","hai","how are you","where are you"};
public MyView(Context context) {
    super(context);
    con=context; 

       for(int i=0;i<3;i++)
     {

         Log.v("messages", "messages"+messages[i]);
     }


     public View getView(int position, View view, ViewGroup vg)
{
    if (view == null)
    {
        // context would be a variable set via the constructor and given
        // by our owner (most likely a ListActivity)
        LayoutInflater inflater = (LayoutInflater)con.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        view = inflater.inflate(R.layout.view, null);
    }

    // Here you would get the sub-views of your layout and fill them
    TextView msg = (TextView) view.findViewById(R.id.txtmessage);
    msg.setText(messages[position]);
    return view;
}

}

从上面的类中我想在活动类中查看 MyView 类的视图

     public class ViewActivity extends Activity {



TableRow tbr;
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.view);

     tbr=(TableRow)findViewById(R.id.tableRow1);


     MyView mv=new MyView(this);
     tbr.addView(mv);

}

}

从上面的代码我无法查看 MyView 类

如何获得 MyView 类的视图

【问题讨论】：

标签： android view android-activity

【解决方案1】：

您需要将 layoutparams 设置为您的视图。现在你的视图没有大小。

你需要这样的东西

MyView mv=new MyView(this);
mv.setLayoutParams(new LayoutParams(new LinearLayout.LayoutParams(
        LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT)));
tbr.addView(mv);

【讨论】：