How to Enable Android Download Manager

Please edit my answer if is not valid

Check if download manager is available:

   int state = this.getPackageManager().getApplicationEnabledSetting("com.android.providers.downloads");if(state==PackageManager.COMPONENT_ENABLED_STATE_DISABLED||state==PackageManager.COMPONENT_ENABLED_STATE_DISABLED_USER||state==PackageManager.COMPONENT_ENABLED_STATE_DISABLED_UNTIL_USED){// Cannot download using download manager}            else {                request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, fileName);                request.setDescription(fileName);                   manager.enqueue(request);             }

And the solution for trying to enable download manager is:

packageName = "com.android.providers.downloads"try {    //Open the specific App Info page:    Intent intent = new Intent(android.provider.Settings.ACTION_APPLICATION_DETAILS_SETTINGS);    intent.setData(Uri.parse("package:" + packageName));    startActivity(intent);} catch ( ActivityNotFoundException e ) {    //e.printStackTrace();    //Open the generic Apps page:    Intent intent = new Intent(android.provider.Settings.ACTION_MANAGE_APPLICATIONS_SETTINGS);    startActivity(intent);}

Some folks were looking for an answer to this question and I just realized that the Answer made to this question is somehow deleted. So I want to answer my own question.

There is no way to activate/deactivate Download Manager directly, since it's system application and we don't have access to it.

Only alternative left is to redirect the User to the Info Page of Download Manager Application.

try {     //Open the specific App Info page:     Intent intent = new Intent(android.provider.Settings.ACTION_APPLICATION_DETAILS_SETTINGS);     intent.setData(Uri.parse("package:" + "com.android.providers.downloads"));     startActivity(intent);} catch ( ActivityNotFoundException e ) {     e.printStackTrace();     //Open the generic Apps page:     Intent intent = new Intent(android.provider.Settings.ACTION_MANAGE_APPLICATIONS_SETTINGS);     startActivity(intent);}

Google Gmail Inbox has check whether the DownloadManager is been disabled,if true then show an AlertDialog to tell user to enable the DownloadManager in Settings.The screenshot show below:

I wrote a class called DownloadManagerResolver to fix this,hope this can help your.:)

public final class DownloadManagerResolver {private static final String DOWNLOAD_MANAGER_PACKAGE_NAME = "com.android.providers.downloads";/** * Resolve whether the DownloadManager is enable in current devices. * * @return true if DownloadManager is enable,false otherwise. */public static boolean resolve(Context context) {    boolean enable = resolveEnable(context);    if (!enable) {        AlertDialog alertDialog = createDialog(context);        alertDialog.show();    }    return enable;}/** * Resolve whether the DownloadManager is enable in current devices. * * @param context * @return true if DownloadManager is enable,false otherwise. */private static boolean resolveEnable(Context context) {    int state = context.getPackageManager()            .getApplicationEnabledSetting(DOWNLOAD_MANAGER_PACKAGE_NAME);    if (Build.VERSION.SDK_INT > Build.VERSION_CODES.JELLY_BEAN_MR2) {        return !(state == PackageManager.COMPONENT_ENABLED_STATE_DISABLED ||                state == PackageManager.COMPONENT_ENABLED_STATE_DISABLED_USER                || state == PackageManager.COMPONENT_ENABLED_STATE_DISABLED_UNTIL_USED);    } else {        return !(state == PackageManager.COMPONENT_ENABLED_STATE_DISABLED ||                state == PackageManager.COMPONENT_ENABLED_STATE_DISABLED_USER);    }}private static AlertDialog createDialog(final Context context) {    AppCompatTextView messageTextView = new AppCompatTextView(context);    messageTextView.setTextSize(16f);    messageTextView.setText("DownloadManager is disabled. Please enable it.");    return new AlertDialog.Builder(context)            .setView(messageTextView, 50, 30, 50, 30)            .setPositiveButton("ok", new DialogInterface.OnClickListener() {                @Override                public void onClick(DialogInterface dialog, int which) {                    enableDownloadManager(context);                }            })            .setCancelable(false)            .create();}/** * Start activity to Settings to enable DownloadManager. */private static void enableDownloadManager(Context context) {    try {        //Open the specific App Info page:        Intent intent = new Intent(android.provider.Settings.ACTION_APPLICATION_DETAILS_SETTINGS);        intent.setData(Uri.parse("package:" + DOWNLOAD_MANAGER_PACKAGE_NAME));        context.startActivity(intent);    } catch (ActivityNotFoundException e) {        e.printStackTrace();        //Open the generic Apps page:        Intent intent = new Intent(android.provider.Settings.ACTION_MANAGE_APPLICATIONS_SETTINGS);        context.startActivity(intent);    }}}