您好，我想以编程方式（动态）设置微调器中文本的样式和大小。我没有为此使用我的应用程序中的任何资源。所以给我一些建议
【问题讨论】：
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。使用资源创建它：
创建一个包含TextView 的布局文件并为此定义大小、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TextView 的ID。
您的布局文件将如下所示：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>
现在您可以像这样在代码中使用它：
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() 或getDropDownView()
在此方法中，您可以为 TextView 设置自定义颜色、大小和字体
更新：
我通过覆盖android的默认资源来动态更改微调器项的文本大小和颜色。我使用的sn-p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;
}
}
【讨论】：
与自定义列表视图相同，我们可以将值设置为微调器。在自定义视图类中，我们可以将属性设置为文本视图
【讨论】：
我做了两处修改，
1-添加了另一个构造函数，以便可以使用资源 2新增2个公共函数（setTextSize，getTextSize） （3-还通过将它们作为 cmets 禁用颜色）
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);
//(you can also pass in a string array resource like this:)
/*SpinnerAdapter adapter = new SpinnerAdapter(this, R.layout.simple_spinner_item,
getResources().getStringArray(R.array.my_string_array_resource));*/
spinner.setAdapter(adapter);
}
public class SpinnerAdapter extends ArrayAdapter<String> {
Context context;
String[] items = new String[] {};
private int textSize=40; //initial default textsize (might be a bit big)
public SpinnerAdapter(final Context context, final int textViewResourceId, final String[] objects) {
super(context, textViewResourceId, objects);
this.items = objects;
this.context = context;
}
public SpinnerAdapter(final Context context, final int resource, final int textViewResourceId ){
super(context, resource, textViewResourceId);
this.items = context.getResources().getStringArray(resource);
Toast.makeText(context, String.valueOf(this.getSpinnerTextSize()), Toast.LENGTH_LONG).show();
}
@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(textSize);
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(textSize);
return convertView;
}
//set the textsize
public void setSpinnerTextSize(int size){
textSize= size;
}
//return the textsize
public int getSpinnerTextSize(){
return textSize;
}
}
}
【讨论】：
ArrayAdapter<String> ArrayAdapter_Price = new ArrayAdapter<String>(
getActivity(), R.layout.item_list_drop_down, dollers) {
public View getView(int position, View convertView, ViewGroup parent) {
View v = super.getView(position, convertView, parent);
TextView tv = ((TextView) v);
tv.setTextColor(getResources().getColor(R.color.login_text_color));
tv.setTypeface(tv.getTypeface(), Typeface.BOLD);
tv.setSingleLine();
tv.setEllipsize(TextUtils.TruncateAt.END);
tv.setTextSize(18);
return v;
}
};
【讨论】：