Make Files look like Downloads in recents.

import static com.android.documentsui.OperationDialogFragment.DIALOG_TYPE_UNKNOWN;

import android.app.ActivityManager.TaskDescription;

import android.app.FragmentManager;

import android.content.Intent;

import android.graphics.drawable.BitmapDrawable;

import android.net.Uri;

import android.os.Bundle;

import android.support.annotation.CallSuper;

        final Intent intent = getIntent();

        mInjector.actions.initLocation(intent);

        // Allow the activity to masquerade as another, so we can look both like

        // Downloads and Files, but with only a single underlying activity.

        if (intent.hasExtra(LauncherActivity.TASK_LABEL_RES)

                && intent.hasExtra(LauncherActivity.TASK_ICON_RES)) {

            updateTaskDescription(intent);

        }

        presentFileErrors(icicle, intent);

    }

    // This is called in the intent contains label and icon resources.

    // When that is true, the launcher activity has supplied them so we

    // can adapt our presentation to how we were launched.

    // Without this code, overlaying launcher_icon and launcher_label

    // resources won't create a complete illusion of the activity being renamed.

    // E.g. if we re-brand Files to Downloads by overlaying label and icon

    // when the user tapped recents they'd see not "Downloads", but the

    // underlying Activity description...Files.

    // Alternate if we rename this activity, when launching other ways

    // like when browsing files on a removable disk, the app would be

    // called Downloads, which is also not the desired behavior.

    private void updateTaskDescription(final Intent intent) {

        int labelRes = intent.getIntExtra(LauncherActivity.TASK_LABEL_RES, -1);

        assert(labelRes > -1);

        String label = getResources().getString(labelRes);

        int iconRes = intent.getIntExtra(LauncherActivity.TASK_ICON_RES, -1);

        assert(iconRes > -1);

        BitmapDrawable drawable = (BitmapDrawable) getResources().getDrawable(

                iconRes,

                null  // we don't care about theme, since the supplier should have handled that.

                );

        setTaskDescription(new TaskDescription(label, drawable.getBitmap()));

    }

    private void presentFileErrors(Bundle icicle, final Intent intent) {

        final @DialogType int dialogType = intent.getIntExtra(

                FileOperationService.EXTRA_DIALOG_TYPE, DIALOG_TYPE_UNKNOWN);

import android.support.annotation.Nullable;

import android.util.Log;

import com.android.documentsui.R;

import java.util.List;

/**

 */

public class LauncherActivity extends Activity {

    public static final String TASK_LABEL_RES = "com.android.documentsui.taskLabel";

    public static final String TASK_ICON_RES = "com.android.documentsui.taskIcon";

    private static final String LAUNCH_CONTROL_AUTHORITY = "com.android.documentsui.launchControl";

    private static final String TAG = "LauncherActivity";

    private void startTask() {

        Intent intent = createLaunchIntent(this);

        intent.putExtra(TASK_LABEL_RES, R.string.launcher_label);

        intent.putExtra(TASK_ICON_RES, R.drawable.launcher_icon);

        // Forward any flags from the original intent.

        intent.setFlags(getIntent().getFlags());

        if (DEBUG) Log.d(TAG, "Starting new task > " + intent.getData());