我想在我的应用中自定义选项菜单。经过一些谷歌搜索并付出了很多努力后,我仍然无法做到。这就是我想要的:
menu.xml文件:
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:id="@+id/menu_first"
android:icon="@drawable/phone_selector"
android:title="@string/first"/>
<item
android:id="@+id/menu_second"
android:icon="@drawable/butterfly_selector"
android:title="@string/second"/>
<item
android:id="@+id/menu_third"
android:icon="@drawable/umbrella_selector"
android:title="@string/third"/>
</menu>
OptionsMenuActivity.java:
public class OptionsMenuActivity extends Activity {
private Menu currentMenu;
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater menuInflater = getMenuInflater();
menuInflater.inflate(R.layout.menu, menu);
this.currentMenu = menu;
return true;
}
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
super.onPrepareOptionsMenu(menu);
setMenuItemIconState(menu, MyApplication.getSelectedMenuItemDrawIcon(), false);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.menu_phone:
setMenuItemIconState(currentMenu, MyApplication.getSelectedMenuItemDrawIcon(), true);
MyApplication.setSelectedMenuItemDrawIcon(R.drawable.phone_active);
Intent intent = new Intent(OptionsMenuActivity.this, FirstActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
return true;
case R.id.menu_butterfly:
setMenuItemIconState(currentMenu, MyApplication.getSelectedMenuItemDrawIcon(), true);
MyApplication.setSelectedMenuItemDrawIcon(R.drawable.butterfly_active);
intent = new Intent(OptionsMenuActivity.this, SecondActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
return true;
case R.id.menu_umbrella:
setMenuItemIconState(currentMenu, MyApplication.getSelectedMenuItemDrawIcon(), true);
MyApplication.setSelectedMenuItemDrawIcon(R.drawable.umbrella_active);
intent = new Intent(OptionsMenuActivity.this, ThirdActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
return true;
default:
return super.onOptionsItemSelected(item);
}
}
private void setMenuItemIconState(Menu menu, int menuItemIconRes, boolean switchLastActiveMenuItemIcon) {
int menuItemId = 0;
int lastDeActiveDrawIcon = 0;
switch (menuItemIconRes) {
case R.drawable.phone_active:
menuItemId = R.id.menu_first;
lastDeActiveDrawIcon = R.drawable.phone;
break;
case R.drawable.butterfly_active:
menuItemId = R.id.menu_second;
lastDeActiveDrawIcon = R.drawable.butterfly;
break;
case R.drawable.umbrella_active:
menuItemId = R.id.menu_third;
lastDeActiveDrawIcon = R.drawable.umbrella;
break;
}
if (switchLastActiveMenuItemIcon) {
MenuItem menuItem = menu.findItem(menuItemId);
menuItem.setIcon(lastDeActiveDrawIcon);
return;
}
MenuItem menuItem = menu.findItem(menuItemId);
menuItem.setIcon(MyApplication.getSelectedMenuItemDrawIcon());
}
}
在MyApplication.java中,我只有一个getter和一个 selectedMenuItemDrawIcon 的setter。我设法正确设置了图标,但是其他人失败了。
是否可以自定义选项菜单?如果没有,是否还有其他方法可以创建一个xml文件,并使其像android的基本菜单一样顺畅地显示和消失。
任何帮助将不胜感激。在此先感谢,(请提供代码示例)。