在Android中动态填充微调器？

我一直在试图让这个工作。我想从1900年到今年的动态进入一个微调。我不认为这是可以做到使用XML定义的数组，但我可以使用数组适配器吗？以下是我迄今为止：在Android中动态填充微调器？

ArrayList<String> years = new ArrayList<String>(); 
int thisYear = Calendar.getInstance().get(Calendar.YEAR); 

for (int i = 1900; i <= thisYear; i++) 
{ 
    years.add(i); 
} 

adapter = new ArrayAdapter<String>(this, 
      android.R.layout.simple_spinner_item, years); 

//spinner to enter this list to 
spinYear = (Spinner)findViewById(R.id.yearspin);

下面是微调的XML：

<Spinner 
     android:id="@+id/yearspin" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content"/>

感谢您的帮助。

来源

2013-04-10 colmulhall

当您添加'spinYear.setAdapter（适配器）'对你的代码会发生什么？ – 2013-04-10 00:18:01

你死定了！谢谢！ – colmulhall 2013-04-10 00:35:35

你非常接近。试试这个：

ArrayList<String> years = new ArrayList<String>(); 
int thisYear = Calendar.getInstance().get(Calendar.YEAR); 
for (int i = 1900; i <= thisYear; i++) { 
    years.add(Integer.toString(i)); 
} 
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, years); 

Spinner spinYear = (Spinner)findViewById(R.id.yearspin); 
spinYear.setAdapter(adapter);

你刚才忘了加

spinYear.setAdapter(adapter);

来源

2013-04-10 00:20:11 vincentjames501

详细说明，你错过了用Integer.toString（i）;'''从一个整数到一个字符串的转换，而你忘记了对'''setAdapter（）的调用''' – vincentjames501 2013-04-10 00:23:00

很好的解决了这个问题！我所需要做的就是设置适配器！ * facepalm * – colmulhall 2013-04-10 00:35:10

@ vincentjames501如何设置微调器显示当前年份并仅在选择不同年份时更改？ – 2016-06-07 12:36:01

我希望这会帮助你。

static final String[] Months = new String[] { "January", "February", 
      "March", "April", "May", "June", "July", "August", "September", 
      "October", "November", "December" };

// Set years 
     ArrayList<String> years = new ArrayList<String>(); 
     int thisYear = Calendar.getInstance().get(Calendar.YEAR); 
     for (int i = 1900; i <= thisYear; i++) { 
      years.add(Integer.toString(i)); 
     } 
     ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, years); 

     Spinner spinYear = (Spinner)findViewById(R.id.spinnerYears); 
     spinYear.setAdapter(adapter); 
     // Set months 
     ArrayAdapter<String> adapterMonths = new ArrayAdapter<String>(this, 
       android.R.layout.simple_spinner_item, Months); 
     adapterMonths.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 

     Spinner spinMonths = (Spinner)findViewById(R.id.spinnerMonths); 
     spinMonths.setAdapter(adapterMonths); 
     // Set days 
     ArrayList<String> days = new ArrayList<String>(); 
     for (int i = 1; i <= 31; i++) { 
      days.add(Integer.toString(i)); 
     } 
     ArrayAdapter<String> adapterDays = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, days); 

     Spinner spinDays = (Spinner)findViewById(R.id.spinnerDays); 
     spinDays.setAdapter(adapterDays);

来源

2015-03-18 02:25:04

在Android中动态填充微调器？

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