Source code
package android.support.v4.app;
import android.app.ActionBar;
import android.app.Activity;
import android.content.res.TypedArray;
import android.graphics.drawable.Drawable;
import android.os.Build.VERSION;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import java.lang.reflect.Method;
class ActionBarDrawerToggleHoneycomb {
private static final String TAG = "ActionBarDrawerToggleHoneycomb";
private static final int[] THEME_ATTRS = new int[]{16843531};
private static class SetIndicatorInfo {
public Method setHomeActionContentDescription;
public Method setHomeAsUpIndicator;
public ImageView upIndicatorView;
SetIndicatorInfo(Activity activity) {
try {
this.setHomeAsUpIndicator = ActionBar.class.getDeclaredMethod("setHomeAsUpIndicator", new Class[]{Drawable.class});
this.setHomeActionContentDescription = ActionBar.class.getDeclaredMethod("setHomeActionContentDescription", new Class[]{Integer.TYPE});
} catch (NoSuchMethodException e) {
View home = activity.findViewById(16908332);
if (home != null) {
ViewGroup parent = (ViewGroup) home.getParent();
if (parent.getChildCount() == 2) {
View up;
View first = parent.getChildAt(0);
View second = parent.getChildAt(1);
if (first.getId() == 16908332) {
up = second;
} else {
up = first;
}
if (up instanceof ImageView) {
this.upIndicatorView = (ImageView) up;
}
}
}
}
}
}
ActionBarDrawerToggleHoneycomb() {
}
public static Object setActionBarUpIndicator(Object info, Activity activity, Drawable drawable, int contentDescRes) {
SetIndicatorInfo setIndicatorInfo;
if (info == null) {
setIndicatorInfo = new SetIndicatorInfo(activity);
}
SetIndicatorInfo sii = setIndicatorInfo;
if (sii.setHomeAsUpIndicator != null) {
try {
ActionBar actionBar = activity.getActionBar();
sii.setHomeAsUpIndicator.invoke(actionBar, new Object[]{drawable});
sii.setHomeActionContentDescription.invoke(actionBar, new Object[]{Integer.valueOf(contentDescRes)});
} catch (Exception e) {
Log.w(TAG, "Couldn't set home-as-up indicator via JB-MR2 API", e);
}
} else if (sii.upIndicatorView != null) {
sii.upIndicatorView.setImageDrawable(drawable);
} else {
Log.w(TAG, "Couldn't set home-as-up indicator");
}
return setIndicatorInfo;
}
public static Object setActionBarDescription(Object info, Activity activity, int contentDescRes) {
SetIndicatorInfo setIndicatorInfo;
if (info == null) {
setIndicatorInfo = new SetIndicatorInfo(activity);
}
SetIndicatorInfo sii = setIndicatorInfo;
if (sii.setHomeAsUpIndicator != null) {
try {
ActionBar actionBar = activity.getActionBar();
sii.setHomeActionContentDescription.invoke(actionBar, new Object[]{Integer.valueOf(contentDescRes)});
if (VERSION.SDK_INT <= 19) {
actionBar.setSubtitle(actionBar.getSubtitle());
}
} catch (Exception e) {
Log.w(TAG, "Couldn't set content description via JB-MR2 API", e);
}
}
return setIndicatorInfo;
}
public static Drawable getThemeUpIndicator(Activity activity) {
TypedArray a = activity.obtainStyledAttributes(THEME_ATTRS);
Drawable result = a.getDrawable(0);
a.recycle();
return result;
}
}