package android.content.pm;
import android.content.res.XmlResourceParser;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.os.Parcel;
import android.text.TextUtils;
import android.util.Printer;
import java.text.Collator;
import java.util.Comparator;
/**
* Base class containing information common to all package items held by
* the package manager. This provides a very common basic set of attributes:
* a label, icon, and meta-data. This class is not intended
* to be used by itself; it is simply here to share common definitions
* between all items returned by the package manager. As such, it does not
* itself implement Parcelable, but does provide convenience methods to assist
* in the implementation of Parcelable in subclasses.
*/
public class PackageItemInfo {
/**
* Public name of this item. From the "android:name" attribute.
*/
public String name;
/**
* Name of the package that this item is in.
*/
public String packageName;
/**
* A string resource identifier (in the package's resources) of this
* component's label. From the "label" attribute or, if not set, 0.
*/
public int labelRes;
/**
* The string provided in the AndroidManifest file, if any. You
* probably don't want to use this. You probably want
* {@link PackageManager#getApplicationLabel}
*/
public CharSequence nonLocalizedLabel;
/**
* A drawable resource identifier (in the package's resources) of this
* component's icon. From the "icon" attribute or, if not set, 0.
*/
public int icon;
/**
* Additional meta-data associated with this component. This field
* will only be filled in if you set the
* {@link PackageManager#GET_META_DATA} flag when requesting the info.
*/
public Bundle metaData;
public PackageItemInfo() {
}
public PackageItemInfo(PackageItemInfo orig) {
name = orig.name;
packageName = orig.packageName;
labelRes = orig.labelRes;
nonLocalizedLabel = orig.nonLocalizedLabel;
icon = orig.icon;
metaData = orig.metaData;
}
/**
* Retrieve the current textual label associated with this item. This
* will call back on the given PackageManager to load the label from
* the application.
*
* @param pm A PackageManager from which the label can be loaded; usually
* the PackageManager from which you originally retrieved this item.
*
* @return Returns a CharSequence containing the item's label. If the
* item does not have a label, its name is returned.
*/
public CharSequence loadLabel(PackageManager pm) {
if (nonLocalizedLabel != null) {
return nonLocalizedLabel;
}
if (labelRes != 0) {
CharSequence label = pm.getText(packageName, labelRes, null);
if (label != null) {
return label;
}
}
if(name != null) {
return name;
}
return packageName;
}
/**
* Retrieve the current graphical icon associated with this item. This
* will call back on the given PackageManager to load the icon from
* the application.
*
* @param pm A PackageManager from which the icon can be loaded; usually
* the PackageManager from which you originally retrieved this item.
*
* @return Returns a Drawable containing the item's icon. If the
* item does not have an icon, the default activity icon is returned.
*/
public Drawable loadIcon(PackageManager pm) {
if (icon != 0) {
Drawable dr = pm.getDrawable(packageName, icon, null);
if (dr != null) {
return dr;
}
}
return pm.getDefaultActivityIcon();
}
/**
* Load an XML resource attached to the meta-data of this item. This will
* retrieved the name meta-data entry, and if defined call back on the
* given PackageManager to load its XML file from the application.
*
* @param pm A PackageManager from which the XML can be loaded; usually
* the PackageManager from which you originally retrieved this item.
* @param name Name of the meta-date you would like to load.
*
* @return Returns an XmlPullParser you can use to parse the XML file
* assigned as the given meta-data. If the meta-data name is not defined
* or the XML resource could not be found, null is returned.
*/
public XmlResourceParser loadXmlMetaData(PackageManager pm, String name) {
if (metaData != null) {
int resid = metaData.getInt(name);
if (resid != 0) {
return pm.getXml(packageName, resid, null);
}
}
return null;
}
protected void dumpFront(Printer pw, String prefix) {
pw.println(prefix + "name=" + name);
pw.println(prefix + "packageName=" + packageName);
pw.println(prefix + "labelRes=0x" + Integer.toHexString(labelRes)
+ " nonLocalizedLabel=" + nonLocalizedLabel
+ " icon=0x" + Integer.toHexString(icon));
}
protected void dumpBack(Printer pw, String prefix) {
// no back here
}
public void writeToParcel(Parcel dest, int parcelableFlags) {
dest.writeString(name);
dest.writeString(packageName);
dest.writeInt(labelRes);
TextUtils.writeToParcel(nonLocalizedLabel, dest, parcelableFlags);
dest.writeInt(icon);
dest.writeBundle(metaData);
}
protected PackageItemInfo(Parcel source) {
name = source.readString();
packageName = source.readString();
labelRes = source.readInt();
nonLocalizedLabel
= TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source);
icon = source.readInt();
metaData = source.readBundle();
}
public static class DisplayNameComparator
implements Comparator<PackageItemInfo> {
public DisplayNameComparator(PackageManager pm) {
mPM = pm;
}
public final int compare(PackageItemInfo aa, PackageItemInfo ab) {
CharSequence sa = aa.loadLabel(mPM);
if (sa == null) sa = aa.name;
CharSequence sb = ab.loadLabel(mPM);
if (sb == null) sb = ab.name;
return sCollator.compare(sa.toString(), sb.toString());
}
private final Collator sCollator = Collator.getInstance();
private PackageManager mPM;
}
}
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