Sets up the title, appearance, and behavior of the ActionBar if it is supported. - Android User Interface

Android examples for User Interface:ActionBar Title

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  2. Android
  3. User Interface
  4. ActionBar Title

Description

Sets up the title, appearance, and behavior of the ActionBar if it is supported.

Demo Code

/* ActivityHelper.java//from www  .j a  v  a 2s.c  om
 * See the file "LICENSE.md" for the full license governing this code.
 */
import android.annotation.TargetApi;
import android.app.ActionBar;
import android.app.Activity;
import android.content.res.Resources;
import android.graphics.Color;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.TextView;

public class Main{
    /**
     * Sets up the title, appearance, and behavior of the ActionBar if it is
     * supported. Should be invoked after
     * {@link #addActionBarIfSupported(Activity)}.
     *
     * @param activity
     * @param titleTextView
     * @param title
     * @param titleTextViewPrefix
     * @param icon
     */
    public static void setupActionBarIfSupported(Activity activity,
            TextView titleTextView, String title,
            String titleTextViewPrefix, Drawable icon) {
        if (titleTextViewPrefix == null) {
            titleTextViewPrefix = "";
        }
        activity.setTitle(titleTextViewPrefix + title);
        if (actionBarSupported() && actionBarNonNull(activity)) {
            setupActionBar(activity, title, icon);
            if (titleTextView != null) {
                titleTextView.setVisibility(View.GONE);
            }
        } else {
            if (titleTextView != null) {
                titleTextView.setText(title);
            }
        }
    }
    private static boolean actionBarSupported() {
        return android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.HONEYCOMB;
    }
    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    private static boolean actionBarNonNull(Activity activity) {
        return activity.getActionBar() != null;
    }
    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    private static void setupActionBar(Activity activity, String title,
            Drawable icon) {
        ActionBar bar = activity.getActionBar();

        bar.setBackgroundDrawable(Appearance.ACTIONBAR_BACKGROUND);
        bar.setTitle(title);

        int actionBarTitleId = Resources.getSystem().getIdentifier(
                "action_bar_title", "id", "android");
        TextView actionBarTextView = (TextView) activity
                .findViewById(actionBarTitleId);
        if (actionBarTextView != null) {
            actionBarTextView.setTextColor(Color.WHITE);
        }

        bar.setDisplayHomeAsUpEnabled(false);
        if (icon != null
                && android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
            setActionBarHomeIcon(bar, icon);
        } else {
            bar.setDisplayShowHomeEnabled(false);
        }
    }
    @TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
    private static void setActionBarHomeIcon(ActionBar bar, Drawable icon) {
        bar.setIcon(icon);
    }
}

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