// finds the target screen density to get icons for
private int getScreenDensity() {
// see Android reference:
// http://developer.android.com/reference/android/util/DisplayMetrics.html
int value = appsRequest.getScreenDensity();
// apps should not target intermediate densities, instead relying on scaling up/down from
// standard densities
switch (appsRequest.getScreenDensity()) {
case DisplayMetrics.DENSITY_TV:
value = DisplayMetrics.DENSITY_HIGH;
break;
case 400: // api 19: DisplayMetrics.DENSITY_400
case DisplayMetrics.DENSITY_XXHIGH:
case 640: // api 18: DisplayMetrics.DENSITY_XXXHIGH
value = DisplayMetrics.DENSITY_XHIGH;
break;
// all other densities are standard densities, let the value remain
}
return value;
}
@Override
public void run() {
PackageManager pm = baseServer.getContext().getPackageManager();
// get a list of installed apps.
Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
List<ResolveInfo> resolveInfos = pm.queryIntentActivities(mainIntent, 0);
int screenDensity = getScreenDensity();
// create a map of app data from the list of installed apps
Map<String, Tuple> appDataMap = new TreeMap<String, Tuple>();
for (ResolveInfo resolveInfo : resolveInfos) {
String pkgName = resolveInfo.activityInfo.packageName;
String appName = resolveInfo.loadLabel(pm).toString();
Drawable drawable = null;
try {
Resources resources = pm.getResourcesForApplication(pkgName);
if (resources != null) {
int iconId = resolveInfo.getIconResource();
if (iconId != 0) drawable = resources.getDrawableForDensity(iconId, screenDensity);
}
// if (drawable == null)
// drawable = pm.getApplicationIcon(pkgName);
} catch (Resources.NotFoundException e) {
Log.e(
TAG, "Failed to find application icon for package '" + pkgName + "':" + e.getMessage());
} catch (PackageManager.NameNotFoundException e) {
Log.e(
TAG, "Failed to find application info for package '" + pkgName + "':" + e.getMessage());
}
byte[] icon = Utility.drawableToBytes(drawable);
Tuple tuple = new Tuple(pkgName, appName, icon);
// add the tuple to the map
appDataMap.put(pkgName, tuple);
}
// build an AppList
AppsResponse.Builder arBuilder = AppsResponse.newBuilder();
arBuilder.setType(AppsResponse.AppsResponseType.REFRESH);
// get Request info
List<AppInfo> currentApps = appsRequest.getCurrentList();
for (AppInfo appInfo : currentApps) {
String pkgName = appInfo.getPkgName();
// compare the client's current apps to our appDataMap
if (appDataMap.containsKey(pkgName)) {
// we have this package installed, check to see if it's different from the client's records
Tuple tuple = appDataMap.remove(pkgName);
boolean different = false;
String appName = appInfo.getAppName();
byte[] iconHash = null;
if (appInfo.hasIconHash()) iconHash = appInfo.getIconHash().toByteArray();
if (!appName.equals(tuple.appName)) {
different = true;
} else {
byte[] tupleIconHash = getIconHash(tuple);
if (!Arrays.equals(iconHash, tupleIconHash)) {
different = true;
}
}
if (different) {
// we have this package installed, but it's different, instruct the client to update it
arBuilder.addUpdated(buildAppInfo(tuple));
}
// otherwise, the package hasn't changed, don't tell the client to do anything to it
} else {
// we don't have this package installed, instruct the client to remove it
arBuilder.addRemoved(pkgName);
}
}
// for any remaining apps, instruct the client to add it
for (Tuple tuple : appDataMap.values()) {
arBuilder.addNew(buildAppInfo(tuple));
}
// build a Response
Response.Builder rBuilder = Response.newBuilder();
rBuilder.setType(Response.ResponseType.APPS);
// add the AppList to the Response
rBuilder.setApps(arBuilder);
baseServer.sendMessage(rBuilder.build());
}