问题
Hy, I am having a problem with the webview selection on longClick. I already had an implementation of a customized menu that launches on longClick. But the default menu is launching as well. I am trying to customize the default menu, but I'm not knowing how to capture the click of the user on an item. I have tried the following, but the menu is becoming vertical and hiding the selection, so I cannot select more words or change the selection.
@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo)
{
super.onCreateContextMenu(menu, v, menuInfo);
MenuInflater inflater = getMenuInflater();
/*
public void inflate (int menuRes, Menu menu)
Inflate a menu hierarchy from the specified XML resource. Throws InflateException if there is an error.
Parameters
menuRes : Resource ID for an XML layout resource to load (e.g., R.menu.main_activity)
menu : The Menu to inflate into. The items and submenus will be added to this Menu.
*/
inflater.inflate(R.menu.menu, menu);
}
@Override
public boolean onContextItemSelected(MenuItem item){
// Handle the menu item selection
switch(item.getItemId()){
case R.id.dict_menu:
// Render the page again
Toast.makeText(mContext,"dict_menu",Toast.LENGTH_SHORT).show();
return true;
case R.id.q_menu:
Toast.makeText(mContext,"q_menu",Toast.LENGTH_SHORT).show();
return true;
case R.id.hi_menu:
Toast.makeText(mContext,"hi_menu",Toast.LENGTH_SHORT).show();
return true;
default:
super.onContextItemSelected(item);
}
return false;
}
with menu xml as following.
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal">
<item android:id="@+id/dict_menu"
android:title="قاموس" />
<item android:id="@+id/q_menu"
android:title="اقتباس" />
<item android:id="@+id/hi_menu"
android:title="تظليل" />
</menu>
Therefore instead of having this result: (I get this result when I don't implement the following methods: onCreateContextMenu, onContextItemSelected which enable me to capture when an item of the menu is chosen)
I get the following:
The first screenshot is received when I use the following code:
@Override
public void onActionModeStarted(ActionMode mode) {
System.out.println("onActionModeStarted");
if (mActionMode == null)
{
mActionMode = mode;
//mode.setTitle("Dictionary");
Menu menu = mode.getMenu();
menu.clear();
mode.getMenuInflater().inflate(R.menu.menu, menu);//mode.getMenuInflater().inflate(myMenu, menu);
}
//System.out.println("onActionModeStarted");
super.onActionModeStarted(mode);
}
public void onContextualMenuItemClicked(MenuItem item) {
System.out.println("onContextualMenuItemClicked");
switch (item.getItemId()) {
case R.id.dict_menu:
// do some stuff
System.out.println("dict_menu");
Toast.makeText(mContext,"dict_menu",Toast.LENGTH_SHORT).show();
break;
case R.id.hi_menu:
// do some different stuff
System.out.println("hi_menu");
Toast.makeText(mContext,"hi_menu",Toast.LENGTH_SHORT).show();
break;
case R.id.q_menu:
// do some different stuff
System.out.println("q_menu");
Toast.makeText(mContext,"q_menu",Toast.LENGTH_SHORT).show();
break;
default:
// ...
super.onContextItemSelected(item);
break;
}
// This will likely always be true, but check it anyway, just in case
/*if (mActionMode != null) {
mActionMode.finish();
}*/
}
@Override
public void onActionModeFinished(ActionMode mode) {
mActionMode = null;
super.onActionModeFinished(mode);
System.out.println("onActionModeFinished");
}
<?xml version="1.0" encoding="utf-8"?>
<!---<menu xmlns:android="http://schemas.android.com/apk/res/android"-->
<menu xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal">
<item android:id="@+id/dict_menu"
android:onClick="onContextualMenuItemClicked"
android:title="قاموس" />
<item android:id="@+id/q_menu"
android:onClick="onContextualMenuItemClicked"
android:title="اقتباس" />
<item android:id="@+id/hi_menu"
android:onClick="onContextualMenuItemClicked"
android:title="تظليل" />
</menu>
This is causing the following error:
android.view.InflateException: Couldn't resolve menu item onClick handler onContextualMenuItemClicked in class android.app.ContextImpl
08-10 09:01:21.602 4931-4931/ W/System.err: at android.view.MenuInflater$InflatedOnMenuItemClickListener.<init>(MenuInflater.java:243)
08-10 09:01:21.602 4931-4931/ W/System.err: at android.view.MenuInflater$MenuState.setItem(MenuInflater.java:464)
08-10 09:01:21.602 4931-4931/ W/System.err: at android.view.MenuInflater$MenuState.addItem(MenuInflater.java:498)
08-10 09:01:21.602 4931-4931/ W/System.err: at android.view.MenuInflater.parseMenu(MenuInflater.java:191)
08-10 09:01:21.602 4931-4931/ W/System.err: at android.view.MenuInflater.inflate(MenuInflater.java:112)
08-10 09:01:21.602 4931-4931/ W/System.err: at BookReader.onActionModeStarted(BookReader.java:3346)
08-10 09:01:21.602 4931-4931/ W/System.err: at com.android.internal.policy.DecorView.startActionMode(DecorView.java:1034)
08-10 09:01:21.602 4931-4931/ W/System.err: at com.android.internal.policy.DecorView.startActionModeForChild(DecorView.java:982)
08-10 09:01:21.602 4931-4931/ W/System.err: at android.view.ViewGroup.startActionModeForChild(ViewGroup.java:828)
08-10 09:01:21.602 4931-4931/ W/System.err: at android.view.ViewGroup.startActionModeForChild(ViewGroup.java:828)
08-10 09:01:21.602 4931-4931/ W/System.err: at android.view.ViewGroup.startActionModeForChild(ViewGroup.java:828)
08-10 09:01:21.603 4931-4931/ W/System.err: at android.view.ViewGroup.startActionModeForChild(ViewGroup.java:828)
08-10 09:01:21.603 4931-4931/ W/System.err: at android.view.View.startActionMode(View.java:6398)
08-10 09:01:21.603 4931-4931/ W/System.err: at org.chromium.content.browser.SelectionPopupController.showActionModeOrClearOnFailure(SelectionPopupController.java:45)
08-10 09:01:21.603 4931-4931/ W/System.err: at org.chromium.content.browser.ContentViewCore.onSelectionEvent(ContentViewCore.java:579)
08-10 09:01:21.603 4931-4931/ W/System.err: at org.chromium.base.SystemMessageHandler.nativeDoRunLoopOnce(Native Method)
08-10 09:01:21.603 4931-4931/ W/System.err: at org.chromium.base.SystemMessageHandler.handleMessage(SystemMessageHandler.java:7)
08-10 09:01:21.603 4931-4931/ W/System.err: at android.os.Handler.dispatchMessage(Handler.java:102)
08-10 09:01:21.603 4931-4931/ W/System.err: at android.os.Looper.loop(Looper.java:154)
08-10 09:01:21.603 4931-4931/ W/System.err: at android.app.ActivityThread.main(ActivityThread.java:6692)
08-10 09:01:21.603 4931-4931/ W/System.err: at java.lang.reflect.Method.invoke(Native Method)
08-10 09:01:21.603 4931-4931/ W/System.err: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1468)
08-10 09:01:21.603 4931-4931/ W/System.err: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1358)
08-10 09:01:21.603 4931-4931/ W/System.err: Caused by: java.lang.NoSuchMethodException: onContextualMenuItemClicked [interface android.view.MenuItem]
08-10 09:01:21.603 4931-4931/ W/System.err: at java.lang.Class.getMethod(Class.java:1981)
08-10 09:01:21.603 4931-4931/ W/System.err: at java.lang.Class.getMethod(Class.java:1637)
08-10 09:01:21.603 4931-4931/ W/System.err: at android.view.MenuInflater$InflatedOnMenuItemClickListener.<init>(MenuInflater.java:241)
08-10 09:01:21.603 4931-4931/ W/System.err: ... 22 more
08-10 09:01:21.604 4931-4931/ A/chromium: [FATAL:jni_android.cc(243)] Please include Java exception stack in crash report
Kindly if there is any code missing, or any info that is ambiguous, let me know to clarify it, thank you for your assistance.
回答1:
In whichever activity is hosting your WebView, override onActionModeStarted(), manipulate the menu items, and assign listeners to each. An example:
@Override
public void onActionModeStarted(ActionMode mode) {
super.onActionModeStarted(mode);
MenuInflater menuInflater = mode.getMenuInflater();
Menu menu = mode.getMenu();
menu.clear();
menuInflater.inflate(R.menu.menu_custom, menu);
menu.findItem(R.id.custom_one).setOnMenuItemClickListener(new ToastMenuItemListener(this, mode, "One!"));
menu.findItem(R.id.custom_two).setOnMenuItemClickListener(new ToastMenuItemListener(this, mode, "Two!"));
menu.findItem(R.id.custom_three).setOnMenuItemClickListener(new ToastMenuItemListener(this, mode, "Three!"));
}
private static class ToastMenuItemListener implements MenuItem.OnMenuItemClickListener {
private final Context context;
private final ActionMode actionMode;
private final String text;
private ToastMenuItemListener(Context context, ActionMode actionMode, String text) {
this.context = context;
this.actionMode = actionMode;
this.text = text;
}
@Override
public boolean onMenuItemClick(MenuItem item) {
Toast.makeText(context, text, Toast.LENGTH_SHORT).show();
actionMode.finish();
return true;
}
}
回答2:
This is the solution that worked for me, hope it may be useful for someone.
The only difference from the previous answer is that I created the menu dynamically, cause the static menu for some reason was not responding to menuItemClicked() function.
@Override
public void onActionModeStarted(ActionMode mode) {
System.out.println("onActionModeStarted");
if (mActionMode == null)
{
mActionMode = mode;
//mode.setTitle("Dictionary");
Menu menu = mode.getMenu();
menu.clear();
mode.getMenuInflater().inflate(R.menu.menu, menu);
List<MenuItem> menuItems = new ArrayList<>();
// get custom menu item
for (int i = 0; i < menu.size(); i++) {
menuItems.add(menu.getItem(i));
}
menu.clear();
// reset menu item order
int size = menuItems.size();
for (int i = 0; i < size; i++) {
addMenuItem(menu, menuItems.get(i), i, true);
}
}
//System.out.println("onActionModeStarted");
super.onActionModeStarted(mode);
}
private void addMenuItem(Menu menu, MenuItem item, int order, boolean isClick){
final MenuItem menuItem = menu.add(item.getGroupId(),
item.getItemId(),
order,
item.getTitle());
menuItem.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);
if (isClick)
// set custom menu item click
menuItem.setOnMenuItemClickListener(new OnMenuItemClickListener() {
@Override
public boolean onMenuItemClick(MenuItem item) {
BookReader.this.menuItemClicked(item);
return true;
}
});
}
public void menuItemClicked(MenuItem item)
{
System.out.println("menuItemClicked");
switch (item.getItemId())
{
case R.id.dict_menu:
testWV.searchInDict();
if (mActionMode!=null){
mActionMode.finish();
}
break;
case R.id.hi_menu:
testWV.highlightWord();
break;
case R.id.q_menu:
testWV.copyQuote();
if (mActionMode!=null){
mActionMode.finish();
}
break;
}
}
来源：https://stackoverflow.com/questions/45541253/horizontal-menu-inflater-on-long-click-for-web-view