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package cgeo.geocaching.utils;
import cgeo.geocaching.cgeoapplication;
import android.content.Intent;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import java.util.List;
public final class ProcessUtils {
private ProcessUtils() {
// utility class
}
/**
* Preferred method to detect the availability of an external app
*
* @param packageName
* @return
*/
public static boolean isLaunchable(final String packageName) {
return getLaunchIntent(packageName) != null;
}
/**
* Checks whether a launch intent is available or if the package is just installed
* This function is relatively costly, so if you know that the package in question has
* a launch intent, use isLaunchable() instead.
*
* @param packageName
* @return
*/
public static boolean isInstalled(final String packageName) {
return isLaunchable(packageName) || hasPackageInstalled(packageName);
}
/**
* This will find installed applications even without launch intent (e.g. the streetview plugin).
*/
private static boolean hasPackageInstalled(final String packageName) {
final List<PackageInfo> packs = cgeoapplication.getInstance().getPackageManager().getInstalledPackages(0);
for (final PackageInfo packageInfo : packs) {
if (packageName.equals(packageInfo.packageName)) {
return true;
}
}
return false;
}
/**
* This will find applications, which can be launched.
*/
public static Intent getLaunchIntent(final String packageName) {
if (packageName == null) {
return null;
}
final PackageManager packageManager = cgeoapplication.getInstance().getPackageManager();
try {
// This can throw an exception where the exception type is only defined on API Level > 3
// therefore surround with try-catch
return packageManager.getLaunchIntentForPackage(packageName);
} catch (final Exception e) {
return null;
}
}
}
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