我正在尝试动态设置和获取项目的微调器值?
任何想法?
我现在只需要Spinner行为的帮助,剩下的应该很容易。
答案 0 :(得分:1)
Spinner spinner = (Spinner)findViewById(R.id.spinner);
ArrayAdapter<String> spinnerAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, android.R.id.text1);
spinnerAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(spinnerAdapter);
spinnerAdapter.add("value");
spinnerAdapter.notifyDataSetChanged();
spinner.setSelection(0);
String text = spinner.getSelectedItem().toString();
答案 1 :(得分:0)
XML文件:
<Spinner android:id="@+id/Spinner01"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
Java文件:
公共类SpinnerExample扩展了Activity {
private String[] arraySpinner;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
this.arraySpinner = new String[] {
"1", "2", "3", "4", "5"
};
Spinner s = (Spinner) findViewById(R.id.Spinner01);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_spinner_item, arraySpinner);
s.setAdapter(adapter);
}
//从spenner获取价值 spinner.setOnItemSelectedListener(newAdapterView.OnItemSelectedListener(){ public void onItemSelected(AdapterView parent,View view,int pos,long id){ Object item = parent.getItemAtPosition(pos); } public void onNothingSelected(AdapterView parent){ } }); }
答案 2 :(得分:0)
试试这个会对你有帮助。
Spinner mySpinner= (Spinner) findViewById(R.id.spinner);
ArrayAdapter<String> myAdapter= new ArrayAdapter<String> (this, android.R.layout.simple_spinner_item);
mySpinner.setAdapter(myAdapter);
如果要动态添加元素,可以这样做:
myAdapter.add("newelement");
myAdapter.notifyDataSetChanged();