我的ActionBar中有一个菜单,可以检查(用XML格式),但是当我尝试在java中按下这个项目检查它时,项目保持未选中状态(但与此操作相关的其他内容是完成)
我的XML菜单:
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools">
[...]
<item
android:id="@+id/menu_switch_full_original"
android:title="@string/menu_switch_full_original"
android:checkable="true"/>
</menu>
和java代码:
public boolean onOptionsItemSelected(MenuItem item) {
if (mEntriesIds != null) {
Activity activity = getActivity();
switch (item.getItemId()) {
[...]
case R.id.menu_switch_full_original: {
item.setChecked(true);
[...]
}
activity.invalidateOptionsMenu();
}
return true;
}
我错过了什么?
答案 0 :(得分:3)
试试这个......
private boolean isChecked = false;
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
MenuItem checkable = menu.findItem(R.id.menu_switch_full_original);
checkable.setChecked(isChecked);
return true;
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// TODO Auto-generated method stub
getMenuInflater().inflate(R.menu.a, menu);
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// TODO Auto-generated method stub
switch (item.getItemId()) {
case R.id.menu_switch_full_original:
isChecked = !item.isChecked();
item.setChecked(isChecked);
// your other functionality
break;
default:
break;
}
return super.onOptionsItemSelected(item);
}