在Android的ActionBar中隐藏图标

Question

I am trying to hide the application logo from the ActionBar. In order to do that I am using the setDisplayHomeAsUpEnabled(boolean) method:

this.getActionBar().setDisplayHomeAsUpEnabled(true);

This works almost as intented, except for two things:

• The icon is still visible when the application starts (and then disappear)
• The navigation drawer icon is not visible on some devices (for example on the Samsung Galaxy Tab 3)

How can I fix this?

Answer 1

试试： getActionBar().setDisplayUseLogoEnabled(false);

Answer 2

The icon is still visible when the application starts (and then disappear)

To avoid this you need to undisplay your logo from your style.xml as follows:

<style name="MyTheme" parent="@android:style/Theme.Holo.Light">
    <item name="android:actionBarStyle">@style/mActionBar</item>
    <item name="actionBarStyle">@style/mActionBar</item>
</style>

<style name="mActionBar" parent="@style/Widget.Holo.Light.ActionBar">
    <item name="android:icon">@android:color/transparent</item>
    <item name="icon">@android:color/transparent</item>
</style>  

Because your app starts with loading your Theme and then after displays your UI by your Activity . Also, this will be a resource way, because your activities will not reload the UI like the home icon, etc. since they are first initialized thanks to the theme.

The navigation drawer icon is not visible on some devices

Make sure you have this following snippnet code:

mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerToggle = new ActionBarDrawerToggle(
    this,                  /* host Activity */
    mDrawerLayout,         /* DrawerLayout object */
    R.drawable.ic_drawer,  /* nav drawer icon to replace 'Up' caret */
    R.string.drawer_open,  /* "open drawer" description */
    R.string.drawer_close  /* "close drawer" description */
) {

    /** Called when a drawer has settled in a completely closed state. */
    public void onDrawerClosed(View view) {
        super.onDrawerClosed(view);
        getActionBar().setTitle(mTitle);
    }

    /** Called when a drawer has settled in a completely open state. */
    public void onDrawerOpened(View drawerView) {
        super.onDrawerOpened(drawerView);
        getActionBar().setTitle(mDrawerTitle);
    }
}; 

//...

getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setHomeButtonEnabled(true); 

And check your icon, or (re)download it .
Hope this helps.