//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5MInputStream 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"; //serviceNameboolean 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;}