src/com/android/settings/bluetooth/GroupBluetoothProfileSwitchConfirmDialog.java

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package com.android.settings.bluetooth;

import com.android.settings.core.instrumentation.InstrumentedDialogFragment;
import android.util.Log;
import android.app.Activity;
import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.os.Bundle;
import com.android.settingslib.core.instrumentation.Instrumentable;

import com.android.settings.R;
import androidx.appcompat.app.AlertDialog;

public class GroupBluetoothProfileSwitchConfirmDialog extends InstrumentedDialogFragment {

    static final String TAG = "GroupBluetoothProfileSwitchConfirmDialog";
    private static final String KEY_GROUP_ID ="group_id";
    private int mGroupId = -1;
    private GroupUtils mGroupUtils;
    private BluetoothDetailsProfilesController mProfileController;

    public interface BluetoothProfileConfirmListener {

        void onDialogNegativeClick();

        void onDialogPositiveClick();
    }

    public static GroupBluetoothProfileSwitchConfirmDialog newInstance(int groupId) {
        Bundle args = new Bundle(1);
        args.putInt(KEY_GROUP_ID, groupId);
        GroupBluetoothProfileSwitchConfirmDialog dialog = new
                GroupBluetoothProfileSwitchConfirmDialog();
        dialog.setArguments(args);
        return dialog;
    }

    @Override
    public int getMetricsCategory() {
        return Instrumentable.METRICS_CATEGORY_UNKNOWN;
    }

    String getGroupTitle() {
        mGroupId = getArguments().getInt(KEY_GROUP_ID);
        return mGroupUtils.getGroupTitle(mGroupId);
    }

    @Override
    public Dialog onCreateDialog(Bundle inState) {
        DialogInterface.OnClickListener onConfirm = (dialog, which) -> {
            onPositiveButtonClicked();
            dialog.dismiss();
        };
        DialogInterface.OnClickListener onCancel = (dialog, which) -> {
            onNegativeButtonClicked();
            dialog.dismiss();
        };

        Context context = getContext();
        mGroupUtils = new GroupUtils(context);
        AlertDialog dialog = new AlertDialog.Builder(context)
        .setPositiveButton(R.string.group_confirm_dialog_apply_button, onConfirm)
        .setNegativeButton(android.R.string.cancel, onCancel).create();
        dialog.setTitle(R.string.group_apply_changes_dialog_title);
        dialog.setMessage(context.getString(R.string.group_confirm_dialog_body, getGroupTitle()));
        return dialog;
    }

    /**
     * Sets the controller that the fragment should use. this method MUST be called
     * before you try to show the dialog or an error will be thrown. An implementation
     * of a pairing controller can be found at {@link BluetoothPairingController}. A
     * controller may not be substituted once it is assigned. Forcibly switching a
     * controller for a new one will lead to undefined behavior.
     */
    void setPairingController(BluetoothDetailsProfilesController profileController) {
        if (isPairingControllerSet()) {
            throw new IllegalStateException("The controller can only be set once. "
                    + "Forcibly replacing it will lead to undefined behavior");
        }
        mProfileController = profileController;
    }

    /**
     * Checks whether mPairingController is set
     * @return True when mPairingController is set, False otherwise
     */
    boolean isPairingControllerSet() {
        return mProfileController != null;
    }

    private void onPositiveButtonClicked() {
        mProfileController.onDialogPositiveClick();
    }

    private void onNegativeButtonClicked() {
        mProfileController.onDialogNegativeClick();
    }
}