Android——复选按钮和开关按钮

复选按钮和开关按钮代码如下：

 <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
    <CheckBox
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="范冰冰"
        android:id="@+id/cb_1"/>
    <CheckBox
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="章子怡"
        android:id="@+id/cb_2"
        android:checked="true"/>
    </LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
    <ToggleButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textOn="开"
        android:textOff="关"
        android:id="@+id/tb_1"/>
    <Switch
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="开关"
        android:id="@+id/sw_1"/>
    </LinearLayout>

java类的代码：

package com.hanqi.testapp2;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Switch;
import android.widget.Toast;
import android.widget.ToggleButton;

public class TestActivity1 extends AppCompatActivity {

 CheckBox cb_1;
    CheckBox cb_2;
    ToggleButton tb_1;
    Switch sw_1;
@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_test1);
cb_1 = (CheckBox)findViewById(R.id.cb_1);
        cb_2 = (CheckBox)findViewById(R.id.cb_2);
        tb_1 = (ToggleButton)findViewById(R.id.tb_1);
        sw_1 = (Switch)findViewById(R.id.sw_1);

        tb_1.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                Toast.makeText(TestActivity1.this, "ToggleButton开关状态 = "+(isChecked?"开":"关"), Toast.LENGTH_SHORT).show();                                                                                                                                               //学习java时的小技巧——三元运算符
            }
        });

        sw_1.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                Toast.makeText(TestActivity1.this, "Switch开关状态 = "+(isChecked?"开":"关"), Toast.LENGTH_SHORT).show();
            }
        });

        //监听器的实例
        CB_OnCheckedChangeListener cb1 = new CB_OnCheckedChangeListener();
        //监听器的绑定
        cb_1.setOnCheckedChangeListener(cb1);
        cb_2.setOnCheckedChangeListener(cb1);
 //公共的复选按钮的监听器
    class CB_OnCheckedChangeListener implements CompoundButton.OnCheckedChangeListener
    {
        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
            CheckBox cb = (CheckBox)buttonView;
            String str = cb.getText().toString();
            if(isChecked)
            {
                Toast.makeText(TestActivity1.this, str+"被选中", Toast.LENGTH_SHORT).show();
            }
            else
            {
                Toast.makeText(TestActivity1.this, str+"被取消选中", Toast.LENGTH_SHORT).show();
            }
        }
    }
}