Spinner的使用

Spinner 下拉选择框

布局文件：

[java] view plaincopy

1. <LinearLayout  
2.                      android:layout_height="wrap_content"  
3.                      android:layout_width="match_parent"  
4.                      android:background="@drawable/no_round_corner"  
5.                      android:orientation="horizontal">  
6.   
7.                  <TextView  
8.                          android:text="血型"  
9.                          android:layout_height="wrap_content"  
10.                          android:layout_width="0dp"  
11.                          android:gravity="right"  
12.                          android:paddingRight="10dp"  
13.                          android:textSize="16sp"  
14.                          android:paddingTop="10dp"  
15.                          android:paddingBottom="10dp"  
16.                          android:layout_weight="1"/>  
17.   
18.                  <View  
19.                          android:background="#ffa8abad"  
20.                          android:layout_width="1dp"  
21.                          android:layout_height="match_parent"/>  
22.   
23.                  <Spinner  
24.                          android:id="@+id/bloodtype"  
25.                          android:layout_height="wrap_content"  
26.                          android:layout_width="0dp"  
27.                          android:layout_weight="2"  
28.                          android:background="@null"  
29.                          android:gravity="left"/>  
30.   
31.              </LinearLayout>  

java文件中

[java] view plaincopy

1.         //血型下拉框  
2.         spinner = (Spinner) findViewById(R.id.bloodtype);  
3.         String[] bloodType = {"A", "B", "AB", "O"};  
4.         //方式一 布局文件使用系统布局  
5. //        ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(RegisterDetailActivity.this, android.R.layout.simple_spinner_item, bloodType);  
6. //        arrayAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);//设置Dropdown 布局资源  
7.         //方式二 自定义布局文件  
8.         ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(RegisterDetailActivity.this, R.layout.register_detail_spinner_item, bloodType);  
9.         arrayAdapter.setDropDownViewResource(R.layout.register_detail_spinner_dropdown_item);//设置Dropdown 布局资源  
10.         //给Spinner设置适配器  
11.         spinner.setAdapter(arrayAdapter);  
12.   
13.         spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {  
14.             @Override  
15.             public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {  
16.              <span style="color:#ff6666">   Spinner spinner1 = (Spinner) adapterView;  
17.                 String content = (String) spinner1.getItemAtPosition(i);//取得与Spinner关联的列表数据的指定位置的数据</span>  
18.                 Toast.makeText(RegisterDetailActivity.this, "选择了" + content, Toast.LENGTH_LONG).show();  
19.             }  
20.   
21.             @Override  
22.             public void onNothingSelected(AdapterView<?> adapterView) {  
23.   
24.             }  
25.         });  
26.         //Spinner 不能使用setOnItemClickListener  
27. //        spinner.setOnItemClickListener(new AdapterView.OnItemClickListener() {  
28. //            @Override  
29. //            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {  
30. //                Toast.makeText(RegisterDetailActivity.this, "点击了" + i, Toast.LENGTH_LONG).show();  
31. //            }  
32. //        });  

自定义布局资源

register_detail_spinner_dropdown_item.xml

[java] view plaincopy

1. <?xml version="1.0" encoding="utf-8"?>  
2.   
3. <TextView xmlns:android="http://schemas.android.com/apk/res/android"  
4.           android:layout_width="match_parent"  
5.           android:layout_height="match_parent"  
6.           android:textSize="16sp"  
7.           android:paddingTop="10dp"  
8.           android:paddingBottom="10dp"  
9.           android:gravity="left"  
10.           android:paddingLeft="10dp"  
11.           android:textColor="#ffa8abad"  
12.           android:background="#aafeFF">  
13.   
14. </TextView>  

register_detail_spinner_item.xml

[java] view plaincopy

1. <?xml version="1.0" encoding="utf-8"?>  
2.   
3. <TextView xmlns:android="http://schemas.android.com/apk/res/android"  
4.           android:layout_width="match_parent"  
5.           android:layout_height="match_parent"  
6.           android:textSize="16sp"  
7.           android:paddingTop="10dp"  
8.           android:paddingBottom="10dp"  
9.           android:gravity="left"  
10.           android:paddingLeft="10dp"  
11.           android:textColor="#ffa8abad">  
12.   
13. </TextView>  

根据Spinner对象取得当前选择的Item内容

[java] view plaincopy

1. String selectedContent = (String) spinner.getSelectedItem();  
2. Toast.makeText(RegisterDetailActivity.this, "当前选择了" + selectedContent, Toast.LENGTH_LONG).show();