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();
             }
         }
     }
 }