ex10.java

Google Android应用框架原理与程序设计 第三版(中文高清PDF)高焕堂

package com.misoo.ex10;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.view.View.OnClickListener;
import android.widget.LinearLayout;
import android.widget.RadioButton;

public class ex10 extends Activity implements OnClickListener {
    /** Called when the activity is first created. */
	    private final int WC = ViewGroup.LayoutParams.WRAP_CONTENT; 
	    DrawView dv;
        @Override
        public void onCreate(Bundle icicle) {
            super.onCreate(icicle);
            LinearLayout layout = new LinearLayout(this);
            layout.setOrientation(LinearLayout.HORIZONTAL);
            LinearLayout.LayoutParams param = 
            	new LinearLayout.LayoutParams(150, 300);
            param.leftMargin = 1;
            dv = new DrawView(this);
            layout.addView(dv, param);
            //--------------------------------------------
            RadioButton ra;
            ra = new RadioButton(this);   
            param = new LinearLayout.LayoutParams(WC, WC);
            param.topMargin = 40;
            layout.addView(ra, param);
            //--------------------------------------------
            ra.setOnClickListener(this);
            setContentView(layout);
        }
		public void onClick(View arg0) {
			// TODO Auto-generated method stub
			dv.invalidate();
		}
 }