如何让微调select项目值的string?
我有5个纺纱厂。 为了对此做出总结。
这是微软的微调
<Spinner android:id="@+id/text_interested" android:layout_span="2" android:layout_width="wrap_content" android:layout_height="60px" android:entries="@array/interestedarrays" android:prompt="@string/interestedprompt" />
这是Java中的Spinner
submitbtn.setOnClickListener(new OnClickListener() { public void onClick(View v) { interested.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { public void onItemSelected( AdapterView<?> adapterView, View view, int i, long l) { interesting = interested.getItemAtPosition(i).toString(); } public void onNothingSelected( AdapterView<?> adapterView) { } }); } });
这里解释:
该页面有一个button。 按下此button时,将从微调器读取数据。 我用这个检查了输出
System.out.println(interested.getItemAtPosition(i).toString());
它给了我什么都没有,甚至没有空。
如何检索值和string?
尝试这个:
String text = mySpinner.getSelectedItem().toString();
像这样,你可以得到不同的纺纱厂的价值。
String Text = mySpinner.getSelectedItem().toString();
要么
mySpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { Object item = parent.getItemAtPosition(position); } public void onNothingSelected(AdapterView<?> parent) { } });
您可以使用,从微调获取选定的项目,
interested.getSelectedItem().toString();
尝试这个
final Spinner cardStatusSpinner1 = (Spinner) findViewById(R.id.text_interested); String cardStatusString; cardStatusSpinner1.setOnItemSelectedListener(new OnItemSelectedListener() { @Override public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) { cardStatusString = parent.getItemAtPosition(pos).toString(); } @Override public void onNothingSelected(AdapterView<?> arg0) { // TODO Auto-generated method stub } }); final Button saveBtn = (Button) findViewById(R.id.save_button); saveBtn .setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { // TODO Auto-generated method stub System.out.println("Selected cardStatusString : " + cardStatusString ); //this will print the result } });
如果您的Spinner被SQLite光标填充,那么解决scheme是:
Spinner mySpin = (Spinner) findViewById(R.id.myspin); mySpin.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { @Override public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { SQLiteCursor item = (SQLiteCursor) parent.getItemAtPosition(position); String value = String.valueOf(item.getString(0)); Toast.makeText(getApplicationContext(), "The option is:" + value , Toast.LENGTH_SHORT).show(); }
PS:在item.getString(0)
– > 0是你想要得到的游标的列索引。
除了build议之外,
String Text = mySpinner.getSelectedItem().toString();
你可以做,
String Text = String.valueOf(mySpinner.getSelectedItem());
当你从微调select任何值,然后你得到选定的价值,
interested.getSelectedItem().toString();
我想你想单击button时,微调器的选定的项目..
尝试getSelectedItem() :
spinner.getSelectedItem()
通过为适配器对象实现SpinnerAdapter,我使用interested.getItem(i).toString()