Display ActionMode over Toolbar

问题:

I am trying to use the android.view.ActionMode with the new android.support.v7.widget.Toolbar, in addition to the traditional android.app.ActionBar. I am able to display it with:

toolbar.startActionMode(callback);

The problem is that the ActionMode is displayed over the ActionBar, and not over the Toolbar. Is there a way to change that?

I tryied to set the following in my theme, but it does not seem to change anything:

<item name="windowActionModeOverlay">true</item>

回答1:

Since you are using the Toolbar, I also assume you are using the AppCompatActivity and have replaced the built in ActionBar with your custom Toolbar using setSupportActionBar(toolbar);

First of all ensure you are importing the correct namespace.

import android.support.v7.view.ActionMode;

and NOT

import android.view.ActionMode;

then use

_actionMode = startSupportActionMode(this);

and NOT

_actionMode = startActionMode(this);

回答2:

Do not start it on your activity, but on your toolbar. In you activity:

Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
toolbar.startActionMode(mActionModeCallback)

and you have to use

<item name="windowActionModeOverlay">true</item>

in your theme as stated by Andre.

回答3:

Try this in your theme:

<item name="windowActionModeOverlay">true</item>

回答4:

This is the solution I made.

In my onCreateActionMode method of ActionMode.Callback, I add this:

StandaloneActionMode standaloneActionMode = (StandaloneActionMode) actionMode;
Field mContextView;
try {
     mContextView = StandaloneActionMode.class.getDeclaredField("mContextView");
     mContextView.setAccessible(true);
     View contextView = (View) mContextView.get(standaloneActionMode);
     MarginLayoutParams params = (MarginLayoutParams) contextView.getLayoutParams();
     params.topMargin = mToolbar.getTop();
  } catch (NoSuchFieldException e) {
            e.printStackTrace();
  } catch (IllegalAccessException e) {
            e.printStackTrace();
  } catch (IllegalArgumentException e) {
            e.printStackTrace();
  }

It works for me.

回答5:

I have tried all the methods above, but it still doesn`t work. And then, I tried the below method:

    private class ActionModeCallback implements ActionMode.Callback {
    @Override
    public boolean onCreateActionMode(ActionMode actionMode, Menu menu) {
        actionMode.getMenuInflater().inflate(R.menu.note_find_action, menu);
        return true;
    }

    @Override
    public boolean onPrepareActionMode(ActionMode actionMode, Menu menu) {
        ((AppCompatActivity) getActivity()).getSupportActionBar().hide();
        return false;
    }

    @Override
    public boolean onActionItemClicked(ActionMode actionMode, MenuItem menuItem) {
        return false;
    }

    @Override
    public void onDestroyActionMode(ActionMode actionMode) {
        ((AppCompatActivity) getActivity()).getSupportActionBar().show();
    }
}

Here, I used action mode and startSupportActionMode method of support library. At the same time I have also tried to modify the theme of given activity. Surely, it doesn`t work. So, if you really have no better choice you may try this one.

Just recently, I have found that I used the Colorful frame to enable multiple theme of my app, this will change the theme in code. When I tried to modify the style in this framework, it works.

Hope it works.

回答6:

find your AndroidManifest.xml ,next add below code in your application or Activity theme

<item name="windowActionModeOverlay">true</item>

so like:

<style name="WorkTimeListTheme" parent="AppTheme.NoActionBar">
        <item name="windowActionModeOverlay">true</item>
        <item name="actionModeBackground">@color/theme_primary</item>
    </style>