判断服务是否开启，应用是否安装，并安装应用

//检查应用程序是否安装并安装应用程序



        public boolean checkApkExist(Context context, String packageName) {

                if (packageName == null || "".equals(packageName))

                        return false;

                try {

                        ApplicationInfo info = context.getPackageManager()

                                        .getApplicationInfo(packageName,

                                                        PackageManager.GET_UNINSTALLED_PACKAGES);

                        return true;

                } catch (NameNotFoundException e) {

                        return false;

                }

        }



        private void installVoiceServiceApk() {



                Intent intent = new Intent();

                intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

                intent.setAction(Intent.ACTION_VIEW);

                String type = "application/vnd.android.package-archive";

                AssetManager assets = ProActivity.this.getAssets();

                try {

                        //当文件比较大的时候不能用这个方法 来读取Stream ss.read(buffer) = -1  我的apk大小为5M

                        InputStream ss = assets.open(AsrService.apk");

                        //使用下面这个方法 没问题

                        InputStream is = getClass().getResourceAsStream(

                                        "/assets/AsrService.apk");



                        FileOutputStream fos = ProActivity.this.openFileOutput(

                                        "AsrService.apk", Context.MODE_PRIVATE

                                                        + Context.MODE_WORLD_READABLE);

                        byte[] buffer = new byte[1024];

                        int len = 0;

                        while ((len = is.read(buffer)) != -1) {

                                fos.write(buffer, 0, len);

                        }

                        fos.flush();

                        is.close();

                        fos.close();

                } catch (Exception e) {

                        e.printStackTrace();

                }

                File f = new File(ProActivity.this.getFilesDir().getPath()

                                + "/AsrService.apk");



                // String path = "file:///android_asset/ZXing.apk";

                // File f = new File(path);

                intent.setDataAndType(Uri.fromFile(f), type);

                ProActivity.this.startActivity(intent);



        }

//检查服务是否启动

        private boolean isStartService(Context ctx) {

                ActivityManager mActivityManager = (ActivityManager) ctx

                                .getSystemService(Context.ACTIVITY_SERVICE);

                List<ActivityManager.RunningServiceInfo> currentService = mActivityManager

                                .getRunningServices(100);

                final String igrsClassName = "com.iflytek.asr.AsrService"; //serviceName

                boolean b = igrsBaseServiceIsStart(currentService, igrsClassName);

                return b;

        }



        private boolean igrsBaseServiceIsStart(

                        List<ActivityManager.RunningServiceInfo> mServiceList,

                        String className) {

                for (int i = 0; i < mServiceList.size(); i++) {

                        if (className.equals(mServiceList.get(i).service.getClassName())) {

                                return true;

                        }

                }

                return false;

        }