要改變Spinner控件的字體大小,可以通過自定義Spinner的樣式和設(shè)置Adapter來實(shí)現(xiàn)。
<style name="SpinnerStyle" parent="Widget.AppCompat.Spinner">
<item name="android:textSize">16sp</item> <!-- 設(shè)置字體大小 -->
</style>
<Spinner
android:id="@+id/spinner"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:theme="@style/SpinnerStyle" />
public class CustomAdapter extends ArrayAdapter<String> {
private Context mContext;
private int mResource;
private List<String> mData;
private LayoutInflater mInflater;
public CustomAdapter(Context context, int resource, List<String> data) {
super(context, resource, data);
this.mContext = context;
this.mResource = resource;
this.mData = data;
this.mInflater = LayoutInflater.from(context);
}
@NonNull
@Override
public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
if (convertView == null) {
convertView = mInflater.inflate(mResource, parent, false);
}
TextView textView = convertView.findViewById(android.R.id.text1);
textView.setText(mData.get(position));
textView.setTextSize(16); // 設(shè)置字體大小
return convertView;
}
@Override
public View getDropDownView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
if (convertView == null) {
convertView = mInflater.inflate(mResource, parent, false);
}
TextView textView = convertView.findViewById(android.R.id.text1);
textView.setText(mData.get(position));
textView.setTextSize(16); // 設(shè)置字體大小
return convertView;
}
}
Spinner spinner = findViewById(R.id.spinner);
List<String> data = new ArrayList<>();
data.add("Option 1");
data.add("Option 2");
data.add("Option 3");
CustomAdapter adapter = new CustomAdapter(this, android.R.layout.simple_spinner_item, data);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(adapter);
通過以上步驟,就可以改變Spinner控件的字體大小。