3
我很努力地動態創建微調框。我在頁面上有它,但每次我試圖選擇一個選項,它會炸燬。我的原始代碼位於底部。我固定它通過移動addSpinner()
函數內部類之外,改變動態創建微調框
Spinner newSpinner = new Spinner(getApplicationContext());
到
Spinner newSpinner = new Spinner(this);
它是固定的,但我不知道它最初沒有工作。誰能解釋一下? (道歉,如果這是一個小白的問題 - 我是新來的Java和Android設備)
public class SpotManageActivity extends Activity
{
private SimpleCursorAdapter mSpots;
@Override
protected void onCreate(Bundle savedInstanceState)
{
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.reminder_manage_activity);
Button add_new_button = (Button) findViewById(R.id.add_new_spot_button);
add_new_button.setOnClickListener(new ButtonOnClickListener());
}
public class ButtonOnClickListener implements View.OnClickListener
{
@Override
public void onClick(View v)
{
addSpinner();
}
private void addSpinner()
{
LinearLayout layoutHolder =
(LinearLayout) findViewById(R.id.layout_holder);
LinearLayout spinnerHolder = new LinearLayout(getApplicationContext());
spinnerHolder.setOrientation(LinearLayout.HORIZONTAL);
spinnerHolder.setLayoutParams(
new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.FILL_PARENT,
LinearLayout.LayoutParams.WRAP_CONTENT, 1f));
Spinner newSpinner = new Spinner(getApplicationContext());
newSpinner.setLayoutParams(
new Spinner.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT));
newSpinner.setAdapter(mSpots);
layoutHolder.addView(spinnerHolder);
spinnerHolder.addView(newSpinner);
// A non-internal spot was selected
}
}
}
代碼審查是嚴格的改進工作代碼。修復關於代碼工作方式/原因的代碼或問題不屬於此處。如果您希望獲得進一步的幫助,只要您明白,隨時可以將其恢復。 –