Android获取系统所有应用程序名称

ActivityManager am = (ActivityManager) this
.getSystemService(ACTIVITY_SERVICE);
List l = am.getRunningAppProcesses();
Iterator i = l.iterator();
PackageManager pm = this.getPackageManager();
while (i.hasNext()) {
ActivityManager.RunningAppProcessInfo info = (ActivityManager.RunningAppProcessInfo) (i
.next());
try {
CharSequence c = pm.getApplicationLabel(pm.getApplicationInfo(
info.processName, PackageManager.GET_META_DATA));
Log.w("LABEL", c.toString());
} catch (Exception e) {
// Name Not FOund Exception
}
}