在我的Android应用程序中，我正在使用旋转器，我已经从SQLite数据库加载数据到旋转器中，它工作正常。这是它的代码。
Spinner spinner = (Spinner) this.findViewById(R.id.spinner1);
List<String> list = new ArrayList<String>();
ArrayAdapter<String> dataAdapter = new ArrayAdapter<String> (this,android.R.layout.simple_spinner_item, list);
cursor.moveToFirst();
list.add("All Lists");
if (cursor.getCount() > 0) {
for (int i = 0; i < cursor.getCount(); i++) {
keyList[i] = cursor.getString(cursor.getColumnIndex(AndroidOpenDbHelper.KEYWORD));
list.add(keyList[i]);
cursor.moveToNext();
}
}
Database.close();
cursor.close();
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(dataAdapter);
现在我想要改变旋转数据的文本颜色和文本大小。我在XML文件上使用了以下XML行作为旋转标记，但它不起作用。
android:textColor="@android:color/white"
android:textSize="11dp"
我如何改变我的转轮的文本颜色和文本大小?
String typeroutes[] = {"Select","Direct","Non Stop"};
Spinner typeroute;
typeroute = view.findViewById(R.id.typeroute);
final ArrayAdapter<String> arrayAdapter5 = new ArrayAdapter<String>(
getActivity(), android.R.layout.simple_spinner_item, typeroutes) {
@Override
public boolean isEnabled(int position) {
if (position == 0) {
// Disable the first item from Spinner
// First item will be use for hint
return false;
} else {
return true;
}
}
public View getView(int position, View convertView, ViewGroup parent) {
View v = super.getView(position, convertView, parent);
((TextView) v).setTextSize(TypedValue.COMPLEX_UNIT_DIP, 16);
((TextView) v).setTextColor(Color.parseColor("#ffffff"));
return v;
} ---->in this line very important so add this
@Override
public View getDropDownView(int position, View convertView,
ViewGroup parent) {
View view = super.getDropDownView(position, convertView, parent);
TextView tv = (TextView) view;
if (position == 0) {
// Set the hint text color gray
tv.setTextColor(Color.GRAY);
} else {
tv.setTextColor(Color.BLACK);
}
return view;
}
};
arrayAdapter5.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
typeroute.setAdapter(arrayAdapter5);
这就是所有的享受你的编码…
为旋转器项创建自定义XML文件。
spinner_item.xml:
将自定义的颜色和大小设置为该文件中的文本。
<?xml version="1.0" encoding="utf-8"?>
<TextView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="20sp"
android:gravity="left"
android:textColor="#FF0000"
android:padding="5dip"
/>
现在使用这个文件来显示你的旋转项，比如:
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, R.layout.spinner_item,list);
您不需要设置下拉资源。它将只使用spinner_item.xml来在spinner中显示您的项目。
为了防止滞后，你不仅需要在onItemSelected监听器中设置文本属性，还需要在Activity的onCreate方法中设置文本属性(但这有点棘手)。
具体来说，你需要在设置适配器后把这个放在onCreate中:
spinner.setSelection(0, true);
View v = spinner.getSelectedView();
((TextView)v).setTextColor(backgroundColor);
然后把这个放到onItemSelected中:
((TextView) view).setTextColor(backgroundColor);
下面是一个完整的例子:
@Override
protected void onCreate(Bundle savedInstanceState)
{
Spinner spinner = (Spinner) findViewById(R.id.spinner);
//Set the choices on the spinner by setting the adapter.
spinner.setAdapter(new SpinnerAdapter(toolbar.getContext(), new String[]{"Overview", "Story", "Specifications", "Poll", "Video"}, accentColor, backgroundColor));
//Set the text color of the Spinner's selected view (not a drop down list view)
spinner.setSelection(0, true);
View v = spinner.getSelectedView();
((TextView)v).setTextColor(backgroundColor);
//Set the listener for when each option is clicked.
spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener()
{
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id)
{
//Change the selected item's text color
((TextView) view).setTextColor(backgroundColor);
}
@Override
public void onNothingSelected(AdapterView<?> parent)
{
}
});
}
要了解更多细节，请参见我的问题。
String typeroutes[] = {"Select","Direct","Non Stop"};
Spinner typeroute;
typeroute = view.findViewById(R.id.typeroute);
final ArrayAdapter<String> arrayAdapter5 = new ArrayAdapter<String>(
getActivity(), android.R.layout.simple_spinner_item, typeroutes) {
@Override
public boolean isEnabled(int position) {
if (position == 0) {
// Disable the first item from Spinner
// First item will be use for hint
return false;
} else {
return true;
}
}
public View getView(int position, View convertView, ViewGroup parent) {
View v = super.getView(position, convertView, parent);
((TextView) v).setTextSize(TypedValue.COMPLEX_UNIT_DIP, 16);
((TextView) v).setTextColor(Color.parseColor("#ffffff"));
return v;
} ---->in this line very important so add this
@Override
public View getDropDownView(int position, View convertView,
ViewGroup parent) {
View view = super.getDropDownView(position, convertView, parent);
TextView tv = (TextView) view;
if (position == 0) {
// Set the hint text color gray
tv.setTextColor(Color.GRAY);
} else {
tv.setTextColor(Color.BLACK);
}
return view;
}
};
arrayAdapter5.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
typeroute.setAdapter(arrayAdapter5);
这就是所有的享受你的编码…
这里有一个链接，可以帮助你改变旋转器的颜色:
点击这里
<Spinner
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/spinner"
android:textSize="20sp"
android:entries="@array/planets"/>
你需要用自定义的spinner_item.xml创建你自己的布局文件:
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/text1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="20sp"
android:textColor="#ff0000" />
如果要自定义下拉列表项，则需要创建一个新的布局文件。spinner_dropdown_item.xml:
<?xml version="1.0" encoding="utf-8"?>
<CheckedTextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/text1"
style="?android:attr/spinnerDropDownItemStyle"
android:maxLines="1"
android:layout_width="match_parent"
android:layout_height="?android:attr/listPreferredItemHeight"
android:ellipsize="marquee"
android:textColor="#aa66cc"/>
最后是旋转器声明中的另一个变化:
ArrayAdapter adapter = ArrayAdapter.createFromResource(this,
R.array.planets_array, R.layout.spinner_item);
adapter.setDropDownViewResource(R.layout.spinner_dropdown_item);
spinner.setAdapter(adapter);
就是这样。
