CheckBox和RadioButton应用

1.CheckBox的用法：

a.注册监听器需要继承接口 CompoundButton.OnCheckedChangeListener

b.实现函数public void onCheckedChanged(CompoundButton chkButton, boolean bCheck)
利用bCheck的值判断选中状态。

2.RadioButton的用法：

a.需要使用容器RadioGroup。

b在容器上注册事件需要继承接口RadioGroup.OnCheckedChangeListener

c.根据事件public void onCheckedChanged(RadioGroup arg0, int checkedBtn) 中checkedBtn的ID号与RadioButton的ID进行比较是否相同。

package com.example.ssyy;

import android.R.string;
import android.app.Activity;
import android.os.Bundle;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.RadioGroup;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.RadioButton;
import android.widget.Toast;

public class CheckBoxActivity extends Activity {

	private CheckBox chk1 = null;
	private CheckBox chk2 = null;
	private CheckBox chk3 = null;

	private RadioButton rbtnButton1 = null;
	private RadioButton rbtnButton2 = null;
	private RadioButton rbtnButton3 = null;
	private RadioGroup rg = null;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);

		setContentView(R.layout.layout_checkbox);

		chk1 = (CheckBox) findViewById(R.id.ckb1);
		chk2 = (CheckBox) findViewById(R.id.ckb2);
		chk3 = (CheckBox) findViewById(R.id.ckb3);

		rbtnButton1 = (RadioButton) findViewById(R.id.rbtn1);
		rbtnButton2 = (RadioButton) findViewById(R.id.rbtn2);
		rbtnButton3 = (RadioButton) findViewById(R.id.rbtn3);
		rg = (RadioGroup) findViewById(R.id.rg);

		chk1.setOnCheckedChangeListener(new OnCheckedChangeListener() {

			public void onCheckedChanged(CompoundButton arg0, boolean arg1) {
				// TODO Auto-generated method stub

			}
		});

		chk1.setOnCheckedChangeListener(new CheckBoxChangeListener());
		chk2.setOnCheckedChangeListener(new CheckBoxChangeListener());
		chk3.setOnCheckedChangeListener(new CheckBoxChangeListener());

		rg.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {

			public void onCheckedChanged(RadioGroup arg0, int checkedBtn) {
				String strName = "";
				if (checkedBtn == rbtnButton1.getId()) {
					strName = rbtnButton1.getText() + "";
				} else if (checkedBtn == rbtnButton2.getId()) {
					strName = rbtnButton2.getText() + "";
				} else if (checkedBtn == rbtnButton3.getId()) {
					strName = rbtnButton3.getText() + "";
				}

				Toast.makeText(getApplicationContext(), strName,
						Toast.LENGTH_SHORT).show();
			}

		});

	}

	@Override
	protected void onDestroy() {
		// TODO Auto-generated method stub
		super.onDestroy();
	}

	@Override
	protected void onPause() {
		// TODO Auto-generated method stub
		super.onPause();
	}

	@Override
	protected void onResume() {
		// TODO Auto-generated method stub
		super.onResume();
	}

	class CheckBoxChangeListener implements
			CompoundButton.OnCheckedChangeListener {
		// 多选事件
		public void onCheckedChanged(CompoundButton chkButton, boolean bCheck) {
			// TODO Auto-generated method stub
			if (bCheck) {
				Toast.makeText(getApplicationContext(), chkButton.getText(),
						Toast.LENGTH_SHORT).show();
			}
		}
	}
}