中设计的那样
我的旋转器有问题。当按下按钮时,我从edittext动态地在旋转器上添加项目。当按下旋转按钮时,项目可以正确显示,但是不能进行选择,并且旋转按钮上没有显示。
代码如下:
final ArrayList<String> players = new ArrayList<String>();
ArrayAdapter<String> adapter = new ArrayAdapter<String> (this, android.R.layout.simple_spinner_dropdown_item, players);
final Spinner spinnerplayers = (Spinner)findViewById(R.id.spinnerplayers);
final ImageButton addbutton = (ImageButton)findViewById(R.id.addbutton);
final EditText editname = (EditText)findViewById(R.id.editname);
final EditText editnum = (EditText)findViewById(R.id.editnum);
addbutton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
players.add(editname.getText().toString()+ " " + editnum.getText().toString());
editname.setText("");
editnum.setText("");
}
});
spinnerplayers.setAdapter(adapter);
final ImageButton removebutton = (ImageButton)findViewById(R.id.removebutton);
removebutton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
//players.remove(spinnerplayers.getSelectedItem().toString());
}
});
如果需要,微调器xml是:
<Spinner
android:id="@+id/spinnerplayers"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_weight="1" />
你知道问题在哪里吗?
您是否尝试指定:
adapter.setNotifyOnChange(true);
原因是你用android. r.l outout .simple_spinner_item.
你可以写你自己的Adapter类:
Spinner spinner = (Spinner) findViewById(R.id.mySpinner);
spinner.setAdapter(new MyCustomAdapter(CLASS.this, R.layout.spinner_layout, players));
那么它看起来就像你在spinner_layout
如果您的意思是按钮上的clicklistener不工作,则必须为此制作自定义适配器。您将在适配器的getView方法中应用侦听器。
添加你必须添加OnItemSelectedListener
YOUR_SPINNER.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> arg0, View arg1,
int position, long arg3) {
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
}
});