android實現藍牙文件發送的實例代碼,支持多種機型

2020-04-11 11:58:11

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來源：轉載

供稿：網友

最近項目上需要實現藍牙傳輸apk的一個功能，能夠搜索周圍的藍牙手機并分享文件。從需求上講android手機自帶的藍牙傳輸模塊就可以滿足需要了，實現也很簡單。不過讓人頭疼的是，雖然說一般的主流機型都配置有藍牙模塊，但是android機型碎片化太嚴重，不同android版本手機藍牙功能也不一樣。4.0.3以下版本和以上版本使用的藍牙包是不同的，分別是"com.android.bluetooth"和"com.mediatek.bluetooth"。還有一些廠商對藍牙模塊進行的定制修改，比如華為的c8812。另外，android藍牙功能是api5以上才有的，所以android的minSdkVersion要不低于5才行。

網上很多android調用藍牙發送模塊的例子，完整并且能夠兼容多系統的例子很少，這里發一個我用在項目中的例子。

復制代碼代碼如下:

　    /**
     * 通過藍牙發送文件
     */
    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);
    }