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我有一個子菜單，並試圖讓項目顯示當前選擇的狀態。由於它是一個子菜單，我無法調用菜單方法。它在第一次被選中時顯示爲已選中，但我需要在菜單第一次膨脹時顯示。請有任何想法嗎？子菜單項目不保留當前狀態
public boolean onCreateOptionsMenu(Menu menu){
MenuInflater minf= getMenuInflater();
minf.inflate(R.menu.menu,menu);
return true;
}
public boolean onOptionsItemSelected(MenuItem item){
switch (item.getItemId()){
//-------Options menu----------
case R.id.about:
Intent intentA = new Intent(FuelMoney.this, About.class);
startActivity(intentA);
return true;
case R.id.locale:
return true;
//-----Sub menu---------- UK item not showing as clicked (rest of the code not complete yet)
case R.id.uk_item:
if(this.countryCode.equals("uk"))
{
item.setChecked(true);
}
Toast.makeText(this, "UK selected", Toast.LENGTH_SHORT).show();
this.countryCode="uk";
this.country = new Country(countryCode);
this.regionAttributes();
item.setChecked(true);
return true;
case R.id.us_item:
Toast.makeText(this, "US selected", Toast.LENGTH_SHORT).show();
this.countryCode="us";
this.country = new Country(countryCode);
this.regionAttributes();
return true;
case R.id.eu_item:
Toast.makeText(this, "EU selected", Toast.LENGTH_SHORT).show();
this.countryCode="eu";
this.country = new Country(countryCode);
this.regionAttributes();
return true;
case R.id.jpn_item:
Toast.makeText(this, "Japan selected", Toast.LENGTH_SHORT).show();
this.countryCode="jpn";
this.country = new Country(countryCode);
this.regionAttributes();
return true;
case R.id.india_item:
Toast.makeText(this, "India selected", Toast.LENGTH_SHORT).show();
this.countryCode="ind";
this.country = new Country(countryCode);
this.regionAttributes();
return true;
default :
return super.onOptionsItemSelected(item);
}