Example usage for android.content Intent EXTRA_ALTERNATE_INTENTS

Introduction

In this page you can find the example usage for android.content Intent EXTRA_ALTERNATE_INTENTS.

Prototype

String EXTRA_ALTERNATE_INTENTS

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Document

An Intent[] describing additional, alternate choices you would like shown with #ACTION_CHOOSER .

Usage

From source file:ru.dublgis.androidhelpers.DesktopUtils.java

public static boolean sendEmail(final Context ctx, final String to, final String subject, final String body,
        final String[] attachment, final String authorities) {
    try {//from  w ww  .j a  va  2 s.  c o  m
        final String[] recipients = new String[] { to };

        final Intent intent = new Intent(
                attachment.length > 1 ? Intent.ACTION_SEND_MULTIPLE : Intent.ACTION_SENDTO);
        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        intent.setType("message/rfc822");
        intent.putExtra(Intent.EXTRA_EMAIL, recipients);
        intent.putExtra(Intent.EXTRA_SUBJECT, subject);
        intent.putExtra(Intent.EXTRA_TEXT, body);

        boolean grant_permissions_workaround = false;
        final ArrayList<Uri> uri = new ArrayList<>();
        if (attachment.length > 0) {
            if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
                for (final String fileName : attachment) {
                    uri.add(Uri.fromFile(new File(fileName)));
                }
            } else {
                // Android 6+: going the longer route.
                // For more information, please see:
                // http://stackoverflow.com/questions/32981194/android-6-cannot-share-files-anymore
                intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
                grant_permissions_workaround = true;
                for (final String fileName : attachment) {
                    uri.add(FileProvider.getUriForFile(ctx, authorities, new File(fileName)));
                }
            }
            // Should not put array with only one element into intent because of a bug in GMail.
            if (uri.size() == 1) {
                intent.putExtra(Intent.EXTRA_STREAM, uri.get(0));
            } else {
                intent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, uri);
            }
        }

        final IntentResolverInfo mailtoIntentResolvers = new IntentResolverInfo(ctx.getPackageManager());
        mailtoIntentResolvers
                .appendResolvers(new Intent(Intent.ACTION_SENDTO, Uri.fromParts("mailto", to, null)));

        final Intent chooserIntent;

        if (mailtoIntentResolvers.isEmpty()) {
            chooserIntent = Intent.createChooser(intent, null);
        } else {
            final IntentResolverInfo messageIntentResolvers = new IntentResolverInfo(ctx.getPackageManager());
            messageIntentResolvers
                    .appendResolvers(new Intent(Intent.ACTION_SENDTO, Uri.fromParts("sms", "", null)));
            messageIntentResolvers
                    .appendResolvers(new Intent(Intent.ACTION_SENDTO, Uri.fromParts("mms", "", null)));
            messageIntentResolvers
                    .appendResolvers(new Intent(Intent.ACTION_SENDTO, Uri.fromParts("tel", "", null)));

            mailtoIntentResolvers.removeSamePackages(messageIntentResolvers.getResolveInfos());

            final List<Intent> intentList = new ArrayList<>();

            for (final ActivityInfo activityInfo : mailtoIntentResolvers.getResolveInfos()) {
                final String packageName = activityInfo.getPackageName();
                final String name = activityInfo.getName();

                // Some mail clients will not read the URI unless this is done.
                // See here: https://stackoverflow.com/questions/24467696/android-file-provider-permission-denial
                if (grant_permissions_workaround) {
                    for (int i = 0; i < uri.size(); ++i) {
                        try {
                            ctx.grantUriPermission(packageName, uri.get(i),
                                    Intent.FLAG_GRANT_READ_URI_PERMISSION);
                        } catch (final Throwable e) {
                            Log.e(TAG, "grantUriPermission error: ", e);
                        }
                    }
                }

                final Intent cloneIntent = (Intent) intent.clone();
                cloneIntent.setComponent(new ComponentName(packageName, name));
                intentList.add(cloneIntent);
            }

            final Intent targetIntent = intentList.get(0);
            intentList.remove(0);

            chooserIntent = Intent.createChooser(targetIntent, null);
            if (!intentList.isEmpty()) {
                final Intent[] extraIntents = intentList.toArray(new Intent[intentList.size()]);
                if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
                    chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, extraIntents);
                } else {
                    chooserIntent.putExtra(Intent.EXTRA_ALTERNATE_INTENTS, extraIntents);
                }
            }
        }

        chooserIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

        ctx.startActivity(chooserIntent);

        return true;
    } catch (final Throwable exception) {
        Log.e(TAG, "sendEmail exception: ", exception);
        return false;
    }
}

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