看在Android的动态文本 [英] Viewing Dynamic text in Android

问题描述

我要打印你好+在文本框中的书面文字（正如我在前面贴）。这里的code我已经做了。而不是打印您好+书面文字，它的点击按钮后才能打印你好，但是

任何建议将AP preciated。谢谢你。

 公共类myActivity1延伸活动{

    @覆盖
    公共无效的onCreate（包savedInstanceState）{
        super.onCreate（savedInstanceState）;
        的setContentView（R.layout.main）;

      / * //测试添加按钮
         的setContentView（R.layout.content_layout_id）;
      * /

        最后的TextView nameText =（TextView中）findViewById（R.id.entry）;
        //最后的TextView TV1 =新的TextView（本）;
        最后的TextView TV2 =新的TextView（本）;

        tv2.setText（你好+ nameText.getText（）的toString（））;

        最后Button按钮=（按钮）findViewById（R.id.Button01）;
        button.setOnClickListener（新View.OnClickListener（）{
            公共无效的onClick（视图v）{

                的setContentView（TV2）;


            }
        }）;

    }
}
 

解决方案

这不是以后你好打印任何东西，因为 nameText 是空的。

现在，也许 nameText 是一个真正的的EditText ，和你想在运行时填入。如果是这样，你需要检查 nameText 的内容在 OnClickListener 。现在，你检查它在的onCreate（），用户界面​​甚至psented用户$ P $之前。

I am trying to print Hello + written text in text box (As I posted earlier). Here's the code I have done. But instead of printing Hello+written text, its only printing Hello after clicking the button.

Any suggestion will be appreciated. Thanks.

public class myActivity1 extends Activity {

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

      /* // testing add button
         setContentView(R.layout.content_layout_id);
      */

        final TextView nameText= (TextView) findViewById(R.id.entry);  
        //final TextView tv1 = new TextView(this);
        final TextView tv2 = new TextView(this);

        tv2.setText("Hello"+ nameText.getText().toString());

        final Button button = (Button) findViewById(R.id.Button01);
        button.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {

                setContentView(tv2);


            }
        });

    }
}

解决方案

It is not printing anything after "Hello", because nameText is empty.

Now, perhaps nameText is really an EditText, and you are trying to fill it in at runtime. If so, you need to check the contents of nameText in the OnClickListener. Right now, you are checking it in onCreate(), before the UI is even presented to the user.

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