android更改微调器中项目的文本颜色
我有一个微调器,在某些情况下,一些选项不应该是可选的。我有代码,使项目不可选择,但它没有灰色的文本颜色,以指定该项目是不可选择的。如何更改微调器中应禁用的项目的文本颜色?代码如下:android更改微调器中项目的文本颜色,android,text,colors,spinner,Android,Text,Colors,Spinner,我有一个微调器,在某些情况下,一些选项不应该是可选的。我有代码,使项目不可选择,但它没有灰色的文本颜色,以指定该项目是不可选择的。如何更改微调器中应禁用的项目的文本颜色?代码如下: public class main extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.
public class main extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
PatchedSpinner pSpinner = (PatchedSpinner) findViewById(R.id.spinner2);
ArrayList<String> testarray = new ArrayList<String>();
testarray.add("item0");
testarray.add("item1");
testarray.add("item2");
testarray.add("item3");
ArrayAdapter<String> spinnerAdapter = new ArrayAdapter<String>(this,
android.R.layout.simple_spinner_dropdown_item, testarray) {
@Override
public boolean isEnabled(int position) {
return position != 1;
}
public boolean areAllItemsEnabled() {
return false;
}
};
pSpinner.setAdapter(spinnerAdapter);
}
我发现,要实现这一点,在主活动中设置ArrayAdapter时必须覆盖getDropDownView
public class main extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
PatchedSpinner pSpinner = (PatchedSpinner) findViewById(R.id.spinner2);
ArrayList<String> testarray = new ArrayList<String>();
testarray.add("item0");
testarray.add("item1");
testarray.add("item2");
testarray.add("item3");
ArrayAdapter<String> spinnerAdapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_dropdown_item, testarray) {
@Override
public boolean isEnabled(int position) {
return position != 1;
}
@Override
public boolean areAllItemsEnabled() {
return false;
}
@Override
public View getDropDownView(int position, View convertView, ViewGroup parent){
View v = convertView;
if (v == null) {
Context mContext = this.getContext();
LayoutInflater vi = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = vi.inflate(R.layout.row, null);
}
TextView tv = (TextView) v.findViewById(R.id.spinnerTarget);
tv.setText(testarray.get(position));
switch (position) {
case 0:
tv.setTextColor(Color.RED);
break;
case 1:
tv.setTextColor(Color.BLUE);
break;
default:
tv.setTextColor(Color.BLACK);
break;
}
return v;
}
};
pSpinner.setAdapter(spinnerAdapter);
}
public类主扩展活动{
@凌驾
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
PatchedSpinner pSpinner=(PatchedSpinner)findViewById(R.id.spinner2);
ArrayList testarray=新的ArrayList();
增加(“第0项”);
增加(“第1项”);
增加(“第2项”);
增加(“第3项”);
ArrayAdapter spinnerAdapter=新的ArrayAdapter(此,android.R.layout.simple\u微调器\u下拉菜单\u项,testarray){
@凌驾
公共布尔值isEnabled(整型位置){
返回位置!=1;
}
@凌驾
公共布尔值areAllItemsEnabled(){
返回false;
}
@凌驾
公共视图getDropDownView(int位置、视图转换视图、视图组父视图){
视图v=转换视图;
如果(v==null){
Context mContext=this.getContext();
LayoutInflater vi=(LayoutInflater)mContext.getSystemService(Context.LAYOUT\u INFLATER\u SERVICE);
v=vi.充气(R.布局.行,空);
}
TextView tv=(TextView)v.findViewById(R.id.spinnerTarget);
tv.setText(testarray.get(position));
开关(位置){
案例0:
tv.setTextColor(颜色:红色);
打破
案例1:
tv.setTextColor(Color.BLUE);
打破
违约:
tv.setTextColor(Color.BLACK);
打破
}
返回v;
}
};
pSpinner.setAdapter(spinnerAdapter);
}
正在膨胀的布局是一个名为row.xml的自定义布局。它用于设置下拉视图的显示
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/spinnerTarget"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textSize="14pt" />
适用于任何想要使用最初提供的android spinner的人
public class main extends Activity {
private Spinner _spinnerMethod;
String[] _methodStrings = new String[]{"Item A", "Item B:False","Item C:False","Last Item"};
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
CreateSpinner();
}
public void CreateSpinner()
{
_spinnerMethod = (Spinner) findViewById(R.id.spinner_edit_death_method);
final ArrayList<String> reasonArray = new ArrayList<String>();
for(int i = 0; i <_methodStrings.length;i ++)
{
reasonArray.add(_methodStrings[i]);
}
ArrayAdapter<String> methodAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, reasonArray)
{
@Override
public boolean isEnabled(int position) {
String val = reasonArray.get(position);
// In my case added :False to the end of strings I wanted effected for some call
boolean isFalse = val.contains(":False");
return !isFalse;
}
@Override
public boolean areAllItemsEnabled() {
return false;
}
@Override
public View getDropDownView(int position, View convertView,android.view.ViewGroup parent){
View v = convertView;
if (v == null) {
Context mContext = this.getContext();
LayoutInflater vi = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
// Androids orginal spinner view item
v = vi.inflate(android.R.layout.simple_spinner_dropdown_item, null);
}
// The text view of the spinner list view
TextView tv = (TextView) v.findViewById(android.R.id.text1);
String val = reasonArray.get(position);
// remove the extra text here
tv.setText(val.replace(":False", ""));
boolean disabled = !isEnabled(position);
if(disabled){tv.setTextColor(Color.GRAY);}
else{tv.setTextColor(Color.BLACK);}
return v;
}
};
methodAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
_spinnerMethod.setAdapter(methodAdapter);
}
}
public类主扩展活动{
私人纺纱机-纺纱机法;
String[]_methodStrings=新字符串[]{“项目A”、“项目B:False”、“项目C:False”、“最后一项”};
@凌驾
创建时的公共void(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
CreateSpinner();
}
public void CreateSpinner()
{
_spinnerMethod=(Spinner)findViewById(R.id.Spinner\u edit\u death\u method);
最终ArrayList reasonArray=新ArrayList();
对于(int i=0;我想知道你为什么不使用原始的android spinner项目而不是使用自己的视图?我使用原始文本视图完成了这项工作,省得我在两个地方编辑它。这很遗憾地将默认材质设计重置为没有填充、错误的文本大小等。这比公认的要好得多,但是,我们有很多未使用的ird变量名(curSlaughterVal?externalStatus?@AbAppletic)已按建议更新为没有未使用的值。我想我有externalStatus,因此可以在页面上的其他位置进行设置,但已更改为简化答案。不幸的是,它看起来与普通微调器不同(下拉项更小、更近)。有没有办法让它看起来“正常”?@AlessandroF不确定之前写过这个。我猜android上使用的基本默认布局可能会改变。例如,android.R.Layout.simple_spinner_dropdown_项可能是android默认库中的一个新默认项。如果是这样,您只需要更新布局值
public class main extends Activity {
private Spinner _spinnerMethod;
String[] _methodStrings = new String[]{"Item A", "Item B:False","Item C:False","Last Item"};
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
CreateSpinner();
}
public void CreateSpinner()
{
_spinnerMethod = (Spinner) findViewById(R.id.spinner_edit_death_method);
final ArrayList<String> reasonArray = new ArrayList<String>();
for(int i = 0; i <_methodStrings.length;i ++)
{
reasonArray.add(_methodStrings[i]);
}
ArrayAdapter<String> methodAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, reasonArray)
{
@Override
public boolean isEnabled(int position) {
String val = reasonArray.get(position);
// In my case added :False to the end of strings I wanted effected for some call
boolean isFalse = val.contains(":False");
return !isFalse;
}
@Override
public boolean areAllItemsEnabled() {
return false;
}
@Override
public View getDropDownView(int position, View convertView,android.view.ViewGroup parent){
View v = convertView;
if (v == null) {
Context mContext = this.getContext();
LayoutInflater vi = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
// Androids orginal spinner view item
v = vi.inflate(android.R.layout.simple_spinner_dropdown_item, null);
}
// The text view of the spinner list view
TextView tv = (TextView) v.findViewById(android.R.id.text1);
String val = reasonArray.get(position);
// remove the extra text here
tv.setText(val.replace(":False", ""));
boolean disabled = !isEnabled(position);
if(disabled){tv.setTextColor(Color.GRAY);}
else{tv.setTextColor(Color.BLACK);}
return v;
}
};
methodAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
_spinnerMethod.setAdapter(methodAdapter);
}
}