我单击操作栏上的图标以显示弹出菜单，然后单击一个弹出菜单项，我的Java代码中的Toast消息显示它将状态从false更改为true。问题是当再次打开弹出菜单时，没有单击任何项目。单击弹出菜单项始终会显示它将状态从false更改为true。
有没有人有这个问题的代码解决方案？
感谢您的帮助。
Java代码：
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_action, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_popup) {
View menuItemView = findViewById(R.id.action_popup);
PopupMenu popupMenu = new PopupMenu(this, menuItemView);
MenuInflater inflater = popupMenu.getMenuInflater();
inflater.inflate(R.menu.popup_menu, popupMenu.getMenu());
popupMenu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
public boolean onMenuItemClick(MenuItem item) {
int id = item.getItemId();
if (id == R.id.opt1_name) {
if (item.isChecked()){
item.setChecked(false);
Toast.makeText(getApplicationContext(), "Logic Set False= " + item, Toast.LENGTH_SHORT).show();
}
else{
item.setChecked(true);
Toast.makeText(getApplicationContext(), "Logic Set True= " + item, Toast.LENGTH_SHORT).show();
}
}
else if (id == R.id.opt2_date) {
if (item.isChecked()){item.setChecked(false);
Toast.makeText(getApplicationContext(), "Logic Set False= " + item, Toast.LENGTH_SHORT).show();
}
else{item.setChecked(true);
Toast.makeText(getApplicationContext(), "Logic Set True= " + item, Toast.LENGTH_SHORT).show();
}
}
return true;
}
});
popupMenu.show();
}
return super.onOptionsItemSelected(item);
}
menu_action.xml
<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" tools:context=".PlayerActivity">
<item android:id="@+id/action_popup" android:title="Sort Popup" android:icon="@drawable/ic_sort"
android:showAsAction="always" />
<item android:id="@+id/action_settings" android:title="Settings"
app:showAsAction="never" />
<item android:id="@+id/action_help" android:title="Help"
app:showAsAction="never" />
</menu>
popup_menu.xml
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<group android:checkableBehavior="single">
<item
android:id="@+id/opt1_name"
android:title="Name" />
<item
android:id="@+id/opt2_date"
android:title="Date" />
</group>
</menu>
答案 0 :(得分：0)
检查错误，如果您检查，那么您的mainlist.xml文件中必须有一个listview，其id为<ListView
android:id="@android:id/list"
android:layout_height="wrap_content"
android:layout_height="fill_parent"/>
//---------------------------------------------------------------------------
// OnShowUI
//
// This function drives the UI sequence and file transfer of the setup.
//
// The OnShowUI event is called directly by the framework to initiate
// the UI sequence and file transfer of the setup. By default this event
// displays UI that informs the end user that the maintenance setup has been
// completed successfully.
//---------------------------------------------------------------------------
function OnShowUI()
BOOL bMaintenanceMode, bUpdateMode;
string szIgnore, szTitle;
LIST listDirs;
number nFindAllDirsResult, nFindAllFilesResult;
BOOL lDirEmpty;
begin
// Enable dialog caching
Enable( DIALOGCACHE );
// Determine what events to show
bUpdateMode = FALSE;
bMaintenanceMode = FALSE;
// Remove this to disabled update mode
if (UPDATEMODE) then
// checking to make sure app still exists in orig location
if Is(PATH_EXISTS, TARGETDIR) then
// Also check for empty TargetDir
lDirEmpty = IsTargetDirEmpty();
if (lDirEmpty) then
// TARGETDIR is completely empty, so disable UPDATE mode
bUpdateMode = FALSE;
else
// TARGETDIR has some contents, so continue with UPDATE
bUpdateMode = TRUE;
endif;
else
// Turn off Update mode if original folder is gone
bUpdateMode = FALSE;
endif;
if (!bUpdateMode) then
// If Update mode is set but the original target is missing
// need to flag the installer to force full reinstall (otherwise it will
// think all features have already been installed (by analyzing the log))
FeatureReinstall();
endif;
endif;
// Remove this to disable maintenance mode.
if (MAINTENANCE) then
// checking to make sure app still exists in orig location
if Is(PATH_EXISTS, TARGETDIR) then
// Also check for empty TargetDir
lDirEmpty = IsTargetDirEmpty();
if (lDirEmpty) then
// TARGETDIR is completely empty, so disable Maint mode
bMaintenanceMode = FALSE;
else
// TARGETDIR has some contents, so continue with Maint
bMaintenanceMode = TRUE;
endif;
else
// Turn off maintenance mode if original folder is gone
bMaintenanceMode = FALSE;
endif;
if (!bMaintenanceMode) then
// If Maintenance mode is set but the original target is missing
// need to flag the installer to force full reinstall (otherwise it will
// think all features have already been installed (by analyzing the log))
FeatureReinstall();
endif;
endif;
// Show appropriate UI
if( bUpdateMode ) then
OnUpdateUIBefore();
else
if ( bMaintenanceMode ) then
OnMaintUIBefore();
else
OnFirstUIBefore();
endif;
endif;
// Move Data
OnMoveData();
if( bUpdateMode ) then
OnUpdateUIAfter();
else
if ( bMaintenanceMode ) then
OnMaintUIAfter();
else
OnFirstUIAfter();
endif;
endif;
// Disable dialog caching
Disable(DIALOGCACHE);
end;