android 通过 包名启动Activity_activity 使用包名启动

  最近因为项目需要，不让app在应用列表显示，只能用自己的启动器启动。基本搞定，效果实现了，不过与我的计划相差挺远的。    


private void RunApp(String packageName) {
        PackageInfo pi;
        try {
            pi = getPackageManager().getPackageInfo(packageName, 0);
            Intent resolveIntent = new Intent(Intent.ACTION_MAIN, null);
            // resolveIntent.addCategory(Intent.CATEGORY_LAUNCHER);
            resolveIntent.setPackage(pi.packageName);
            PackageManager pManager = getPackageManager();
            List<ResolveInfo> apps = pManager.queryIntentActivities(
                    resolveIntent, 0);


            ResolveInfo ri = apps.iterator().next();
            if (ri != null) {
                packageName = ri.activityInfo.packageName;
                String className = ri.activityInfo.name;


                Intent intent = new Intent(Intent.ACTION_MAIN);
                // intent.addCategory(Intent.CATEGORY_LAUNCHER);


                ComponentName cn = new ComponentName(packageName, className);


                intent.setComponent(cn);
                startActivity(intent);
            }
        } catch (NameNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }

转载自 http://blog.csdn.net/ilittleone/article/details/7060211