获取安装在手机中的所有应用包名

public void getPackagename(){
PackageManager pm = getPackageManager();
Intent i = new Intent(Intent.ACTION_MAIN,null);
i.addCategory(Intent.CATEGORY_LAUNCHER);
//List<ResolveInfo> resolveInfos = pm.queryIntentActivities(i, PackageManager.MATCH_DEFAULT_ONLY);
List<ApplicationInfo> listAppcations = pm
.getInstalledApplications(PackageManager.GET_UNINSTALLED_PACKAGES);
Collections.sort(listAppcations,new ApplicationInfo.DisplayNameComparator(pm));
for (ApplicationInfo info : listAppcations){
Log.e(TAG, "getPackagename: ---"+info.packageName );
}
}