src/main/java/de/thedevstack/conversationsplus/ui/listeners/OpenFileOnClickListener.java


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package de.thedevstack.conversationsplus.ui.listeners;

import android.app.Activity;
import android.content.ActivityNotFoundException;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.net.Uri;
import android.view.View;
import android.widget.Toast;

import java.util.List;

import de.thedevstack.conversationsplus.ConversationsPlusApplication;
import de.thedevstack.conversationsplus.R;
import de.thedevstack.conversationsplus.entities.DownloadableFile;
import de.thedevstack.conversationsplus.entities.Message;
import de.thedevstack.conversationsplus.persistance.FileBackend;
import de.thedevstack.conversationsplus.providers.ConversationsPlusFileProvider;

/**
 */
public class OpenFileOnClickListener implements View.OnClickListener {
    private final Activity activity;
    private final Message message;

    public OpenFileOnClickListener(Activity activity, Message message) {
        this.activity = activity;
        this.message = message;
    }

    @Override
    public void onClick(View view) {
        this.openFile();
    }

    public void openFile() {
        DownloadableFile file = FileBackend.getFile(message);
        if (!file.exists()) {
            Toast.makeText(this.activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
            return;
        }
        boolean bInPrivateStorage = false;
        if (file.getAbsolutePath().startsWith(FileBackend.getPrivateFileDirectoryPath())) {
            bInPrivateStorage = true;
        }
        Intent openIntent = new Intent(Intent.ACTION_VIEW);
        String mime = file.getMimeType();
        if (mime == null) {
            mime = "*/*";
        }
        Uri uri;
        if (bInPrivateStorage) {
            uri = ConversationsPlusFileProvider.createUriForPrivateFile(file);
        } else {
            uri = Uri.fromFile(file);
        }
        openIntent.setDataAndType(uri, mime);
        PackageManager manager = this.activity.getPackageManager();
        List<ResolveInfo> infos = manager.queryIntentActivities(openIntent, 0);
        if (bInPrivateStorage) {
            for (ResolveInfo info : infos) {
                ConversationsPlusApplication.getAppContext().grantUriPermission(info.activityInfo.packageName, uri, Intent.FLAG_GRANT_READ_URI_PERMISSION);
            }
        }
        if (infos.size() == 0) {
            openIntent.setDataAndType(uri, "*/*");
        }
        if (bInPrivateStorage) {
            openIntent.putExtra(Intent.EXTRA_STREAM, uri);
            openIntent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
        }
        try {
            this.activity.startActivity(openIntent);
            return;
        } catch (ActivityNotFoundException e) {
            //ignored
        }
        Toast.makeText(this.activity, R.string.no_application_found_to_open_file, Toast.LENGTH_SHORT).show();
    }
}