Android 下载apk提示更新以及解决Android 6.0 Marshmallow提示更新报错问题
下载并安装apk的方法很多，但是谷歌还是建议我们采用DownloadManager。 下载更新的代码比较简单，分如下几块： 启动下载 public long startDownload(String uri, String title, String description) { DownloadManager.Request req = new DownloadManager.Request(Uri.parse(uri)); req.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_WIFI); //req.setAllowedOverRoaming(false); req.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED); //设置文件的保存的位置[三种方式] //第一种 //file:///storage/emulated/0/Android/data/your-package/files/Download/update.apk req.setDestinationInExternalFilesDir(context, Environment.DIRECTORY_DOWNLOADS, "update.apk"); //第二种 //file:///storage/emulated/0/Download/update.apk //req.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "update.apk"); //第三种 自定义文件路径 //req.setDestinationUri() // 设置一些基本显示信息 req.setTitle(title); req.setDescription(description); //req.setMimeType("application/vnd.android.package-archive"); return dm.enqueue(req); } 然后是监听下载完成的Receive public class ApkInstallReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { if (intent.getAction().equals(DownloadManager.ACTION_DOWNLOAD_COMPLETE)) { long downloadApkId = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, -1); long id = PrefUtils.getDownloadId(); if (downloadApkId == id) { installApk(context, downloadApkId); } } } private void installApk(Context context, long downloadApkId) { Intent install = new Intent(Intent.ACTION_VIEW); DownloadManager dManager = (DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE); Uri downloadFileUri = dManager.getUriForDownloadedFile(downloadApkId); if (downloadFileUri != null) { Log.d("DownloadManager", downloadFileUri.toString()); install.setDataAndType(downloadFileUri, "application/vnd.android.package-archive"); install.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); context.startActivity(install); } else { Log.e("DownloadManager", "下载失败"); } } 上面的做法在Android 6.0 Marshmallow 系统之前是没有问题的，但是在6.0之后，会报错，倒是应用直接挂掉；报错LOG如下: Caused by: android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.intent.action.VIEW dat=content: typ=application/vnd.android.package-archive flg=0x10000000 } 经过查看Uri的值，发现6.0与之前的不一样 6.0的downloadFileUri 值为: content://downloads/my_downloads/10 6.0之前的downloadFileUri 值为:file:///storage/emulated/0/Android/data/com.chiclam.download/files/Download/update-2.apk 完整的解决写法： private void installApk(Context context, long downloadApkId) { DownloadManager dManager = (DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE); DownloadManager.Query query = new DownloadManager.Query(); query.setFilterById(downloadApkId); Cursor c = dManager.query(query); if(c != null) { if (c.moveToFirst()) { int columnIndex = c.getColumnIndex(DownloadManager.COLUMN_STATUS); if (DownloadManager.STATUS_SUCCESSFUL == c.getInt(columnIndex)) { String downloadFileUrl = c.getString(c.getColumnIndex(DownloadManager.COLUMN_LOCAL_URI)); startInstall(context, Uri.parse(downloadFileUrl)); } } c.close(); } } private boolean startInstall(Context context, Uri uri) { if(!new File( uri.getPath()).exists()) { System.out.println( " local file has been deleted! "); return false; } Intent intent = new Intent(); intent.addFlags( Intent.FLAG_ACTIVITY_NEW_TASK); intent.setAction( Intent.ACTION_VIEW); intent.setDataAndType( uri, "application/vnd.android.package-archive"); context.startActivity( intent); return true; } 这样便完美解决了6.0上自动启动更新界面BUG
