src/com/android/settings/widget/LinkifySummaryPreference.java

/*
 * Copyright (C) 2020 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.settings.widget;

import android.content.Context;
import android.text.SpannableString;
import android.text.TextUtils;
import android.text.method.LinkMovementMethod;
import android.text.style.ClickableSpan;
import android.util.AttributeSet;
import android.view.View;
import android.widget.TextView;

import androidx.preference.Preference;
import androidx.preference.PreferenceViewHolder;

/** A preference which supports linkify text in the summary **/
public class LinkifySummaryPreference extends Preference {

    public LinkifySummaryPreference(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public LinkifySummaryPreference(Context context) {
        super(context);
    }

    @Override
    public void onBindViewHolder(PreferenceViewHolder holder) {
        super.onBindViewHolder(holder);

        final TextView summaryView = (TextView) holder.findViewById(android.R.id.summary);
        if (summaryView == null || summaryView.getVisibility() != View.VISIBLE) {
            return;
        }

        final CharSequence summary = getSummary();
        if (!TextUtils.isEmpty(summary)) {
            final SpannableString spannableSummary = new SpannableString(summary);
            if (spannableSummary.getSpans(0, spannableSummary.length(), ClickableSpan.class)
                    .length > 0) {
                summaryView.setMovementMethod(LinkMovementMethod.getInstance());
            }
        }
    }
}