Android recipe 在代码中写布局

代码：

package my.demo;

import android.app.Activity;

public class TempActivity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        LinearLayout linearLayout = (LinearLayout) getLayoutInflater().inflate(
                R.layout.main, null);
        
        Button myButton = new Button(this);
        
        myButton.setText("Hello!");
        
        LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT);
        
        linearLayout.addView(myButton, lp);
        
        setContentView(linearLayout);

    }
}