Android——复选按钮和开关按钮

复选按钮和开关按钮代码如下：

 1  <LinearLayout
 2         android:layout_width="match_parent"
 3         android:layout_height="wrap_content">
 4     <CheckBox
 5         android:layout_width="wrap_content"
 6         android:layout_height="wrap_content"
 7         android:text="范冰冰"
 8         android:id="@+id/cb_1"/>
 9     <CheckBox
10         android:layout_width="wrap_content"
11         android:layout_height="wrap_content"
12         android:text="章子怡"
13         android:id="@+id/cb_2"
14         android:checked="true"/>
15     </LinearLayout>
16     <LinearLayout
17         android:layout_width="match_parent"
18         android:layout_height="wrap_content">
19     <ToggleButton
20         android:layout_width="wrap_content"
21         android:layout_height="wrap_content"
22         android:textOn="开"
23         android:textOff="关"
24         android:id="@+id/tb_1"/>
25     <Switch
26         android:layout_width="wrap_content"
27         android:layout_height="wrap_content"
28         android:text="开关"
29         android:id="@+id/sw_1"/>
30     </LinearLayout>

java类的代码：

 1 package com.hanqi.testapp2;
 2
 3 import android.support.v7.app.AppCompatActivity;
 4 import android.os.Bundle;
 5 import android.widget.CheckBox;
 6 import android.widget.CompoundButton;
 7 import android.widget.RadioButton;
 8 import android.widget.RadioGroup;
 9 import android.widget.Switch;
10 import android.widget.Toast;
11 import android.widget.ToggleButton;
12
13 public class TestActivity1 extends AppCompatActivity {
14
15  CheckBox cb_1;
16     CheckBox cb_2;
17     ToggleButton tb_1;
18     Switch sw_1;
19 @Override
20     protected void onCreate(Bundle savedInstanceState) {
21         super.onCreate(savedInstanceState);
22         setContentView(R.layout.activity_test1);
23 cb_1 = (CheckBox)findViewById(R.id.cb_1);
24         cb_2 = (CheckBox)findViewById(R.id.cb_2);
25         tb_1 = (ToggleButton)findViewById(R.id.tb_1);
26         sw_1 = (Switch)findViewById(R.id.sw_1);
27
28         tb_1.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
29             @Override
30             public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
31                 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
32             }
33         });
34
35         sw_1.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
36             @Override
37             public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
38                 Toast.makeText(TestActivity1.this, "Switch开关状态 = "+(isChecked?"开":"关"), Toast.LENGTH_SHORT).show();
39             }
40         });
41
42         //监听器的实例
43         CB_OnCheckedChangeListener cb1 = new CB_OnCheckedChangeListener();
44         //监听器的绑定
45         cb_1.setOnCheckedChangeListener(cb1);
46         cb_2.setOnCheckedChangeListener(cb1);
47  //公共的复选按钮的监听器
48     class CB_OnCheckedChangeListener implements CompoundButton.OnCheckedChangeListener
49     {
50         @Override
51         public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
52             CheckBox cb = (CheckBox)buttonView;
53             String str = cb.getText().toString();
54             if(isChecked)
55             {
56                 Toast.makeText(TestActivity1.this, str+"被选中", Toast.LENGTH_SHORT).show();
57             }
58             else
59             {
60                 Toast.makeText(TestActivity1.this, str+"被取消选中", Toast.LENGTH_SHORT).show();
61             }
62         }
63     }
64 }