我认为您不能在不覆盖默认布局资源的行为的情况下动态创建它。要使用资源创建它:
创建一个布局文件,其中包含TextView
并为此定义尺寸、颜色和其他样式。并创建一个ArrayAdapter
对象并在适配器中提供该布局文件以及ID
of the TextView
.
你的布局文件将是这样的:spinner_item.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:id="@+id/textview"
android:layout_height="30dip"
android:layout_width="wrap_content"
android:textSize="20dip"
android:textColor="#ccddaa"
/>
</LinearLayout>
现在您可以在代码中使用它,如下所示:
Spinner mySpinner = (Spinner)findViewById(R.id.spinner);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, R.layout.spinner_item,R.id.textview,Your_Array_of_items);
mySpinner.setAdapter(adapter);
您还可以创建自定义 ArrayAdapter 并覆盖方法
getView()
or getDropDownView()
在此方法中,您可以设置自定义颜色、大小和字体TextView
Update:
我通过覆盖 android 的默认资源动态更改了微调项目的文本大小和颜色。我使用的代码片段如下:
public class CustomSpinner extends Activity {
String[] numbers = { "One", "Two", "Three", "Four", "Five" };
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Spinner spinner = (Spinner) findViewById(R.id.spinner);
SpinnerAdapter adapter = new SpinnerAdapter(this,
android.R.layout.simple_spinner_item, numbers);
spinner.setAdapter(adapter);
}
private class SpinnerAdapter extends ArrayAdapter<String> {
Context context;
String[] items = new String[] {};
public SpinnerAdapter(final Context context,
final int textViewResourceId, final String[] objects) {
super(context, textViewResourceId, objects);
this.items = objects;
this.context = context;
}
@Override
public View getDropDownView(int position, View convertView,
ViewGroup parent) {
if (convertView == null) {
LayoutInflater inflater = LayoutInflater.from(context);
convertView = inflater.inflate(
android.R.layout.simple_spinner_item, parent, false);
}
TextView tv = (TextView) convertView
.findViewById(android.R.id.text1);
tv.setText(items[position]);
tv.setTextColor(Color.BLUE);
tv.setTextSize(30);
return convertView;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
LayoutInflater inflater = LayoutInflater.from(context);
convertView = inflater.inflate(
android.R.layout.simple_spinner_item, parent, false);
}
// android.R.id.text1 is default text view in resource of the android.
// android.R.layout.simple_spinner_item is default layout in resources of android.
TextView tv = (TextView) convertView
.findViewById(android.R.id.text1);
tv.setText(items[position]);
tv.setTextColor(Color.BLUE);
tv.setTextSize(30);
return convertView;
}
}