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。

复制代码 代码如下:

/**

* 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：