android实现蓝牙文件发送,支持多种机型
最近项目上需要实现蓝牙传输apk的一个功能,能够搜索周围的蓝牙手机并分享文件。从需求上讲android手机自带的蓝牙传输模块就可以满足需要了,实现也很简单。不过让人头疼的是,虽然说一般的主流机型都配置有蓝牙模块,但是android机型碎片化太严重,不同android版本手机蓝牙功能也不一样。4.0.3以下版本和以上版本使用的蓝牙包是不同的,分别是"com.android.bluetooth"和"com.mediatek.bluetooth"。还有一些厂商对蓝牙模块进行的定制修改,比如华为的c8812。另外,android蓝牙功能是api5以上才有的,所以android的minSdkVersion要不低于5才行。
网上很多android调用蓝牙发送模块的例子,完整并且能够兼容多系统的例子很少,这里发一个我用在项目中的例子。
/** * 通过蓝牙发送文件 */ private void sendFile(Activity activity) { PackageManager localPackageManager = activity.getPackageManager(); Intent localIntent = null; HashMap<String, ActivityInfo> localHashMap = null; try { localIntent = new Intent(); localIntent.setAction(Intent.ACTION_SEND); File file = new File(TAExternalOverFroyoUtils.getDiskCacheDir(this, Constants.DOWNLOAD_DIR).getAbsolutePath(), TextUtils.genApkName(worm.getWormid())); localIntent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(file)); // localIntent.putExtra(Intent.EXTRA_STREAM, // Uri.fromFile(new File(localApplicationInfo.sourceDir))); localIntent.setType("*/*"); List<ResolveInfo> localList = localPackageManager.queryIntentActivities( localIntent, 0); localHashMap = new HashMap<String, ActivityInfo>(); Iterator<ResolveInfo> localIterator1 = localList.iterator(); while (localIterator1.hasNext()) { ResolveInfo resolveInfo = (ResolveInfo) localIterator1.next(); ActivityInfo localActivityInfo2 = resolveInfo.activityInfo; String str = localActivityInfo2.applicationInfo.processName; if (str.contains("bluetooth")) localHashMap.put(str, localActivityInfo2); } } catch (Exception localException) { ToastHelper.showBlueToothSupportErr(activity); } if (localHashMap.size() == 0) ToastHelper.showBlueToothSupportErr(activity); ActivityInfo localActivityInfo1 = (ActivityInfo) localHashMap .get("com.android.bluetooth"); if (localActivityInfo1 == null) { localActivityInfo1 = (ActivityInfo) localHashMap .get("com.mediatek.bluetooth"); } if (localActivityInfo1 == null) { Iterator<ActivityInfo> localIterator2 = localHashMap.values().iterator(); if (localIterator2.hasNext()) localActivityInfo1 = (ActivityInfo) localIterator2.next(); } if (localActivityInfo1 != null) { localIntent.setComponent(new ComponentName( localActivityInfo1.packageName, localActivityInfo1.name)); activity.startActivityForResult(localIntent, 4098); return; } ToastHelper.showBlueToothSupportErr(activity); }
效果: