android:启动一个程序

ib_start.setOnClickListener(new OnClickListener() {
 
            public void onClick(View v) {
                // TODO Auto-generated method stub
                int posi = (Integer) myview.getTag();
                ApplicationInfo appinfo;
                if (isAllapp){
                appinfo = appInfos.get(posi);
                }else {
                    appinfo= userAppInfos.get(posi);
                }
                String packname = appinfo.packageName;
                // Intent intent = new Intent();
                // intent= packageManager.getLaunchIntentForPackage(packname);
                // <action android:name="android.intent.action.MAIN" />
                // <category android:name="android.intent.category.LAUNCHER" />
                // Intent i = new Intent();
                // i.setAction("android.intent.action.MAIN");
                // i.addCategory("android.intent.category.LAUNCHER");
                //
                // List<ResolveInfo> lists =
                // packageManager.queryIntentActivities(i,
                // PackageManager.MATCH_DEFAULT_ONLY);
                // for(ResolveInfo list :lists){
                //
                // }
                try {
                    PackageInfo packinfo = packageManager.getPackageInfo(
                            packname, PackageManager.GET_ACTIVITIES);
                    ActivityInfo[] activityinfos = packinfo.activities;
                    ActivityInfo lunchactivity = activityinfos[0];
                    Intent intent = new Intent();
                    intent.setComponent(new ComponentName(packname,
                            lunchactivity.name));
                    startActivity(intent);
 
                } catch (NameNotFoundException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                // if(intent==null){
                // Toast.makeText(getApplicationContext(), "无法启动改应用", 1).show();
                // return;
                // }
                // intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                // startActivity(intent);
            }
        });