88 lines
3.2 KiB
Java
88 lines
3.2 KiB
Java
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License
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*/
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package com.android.dialer.about;
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import android.os.Bundle;
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import android.support.v7.app.AppCompatActivity;
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import android.view.MenuItem;
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import android.widget.ScrollView;
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import android.widget.TextView;
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/** Simple Activity that renders locally stored open source legal info in a text view. */
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public final class LicenseActivity extends AppCompatActivity {
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private static final String TAG = "LicenseActivity";
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private static final String STATE_SCROLL_POS = "scroll_pos";
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@Override
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public void onCreate(Bundle bundle) {
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super.onCreate(bundle);
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setContentView(R.layout.license_scrollview);
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License license = getIntent().getParcelableExtra(LicenseMenuActivity.ARGS_LICENSE);
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getSupportActionBar().setTitle(license.getLibraryName());
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// Show 'up' button with no logo.
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getSupportActionBar().setDisplayShowHomeEnabled(true);
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getSupportActionBar().setDisplayHomeAsUpEnabled(true);
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getSupportActionBar().setLogo(null);
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TextView textView = (TextView) findViewById(R.id.license_activity_textview);
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String licenseText = Licenses.getLicenseText(this, license);
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if (licenseText == null) {
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finish();
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return;
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}
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textView.setText(licenseText);
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}
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@Override
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public void onSaveInstanceState(Bundle outState) {
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super.onSaveInstanceState(outState);
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ScrollView scrollView = (ScrollView) findViewById(R.id.license_activity_scrollview);
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TextView textView = (TextView) findViewById(R.id.license_activity_textview);
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int firstVisibleLine = textView.getLayout().getLineForVertical(scrollView.getScrollY());
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int firstVisibleChar = textView.getLayout().getLineStart(firstVisibleLine);
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outState.putInt(STATE_SCROLL_POS, firstVisibleChar);
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}
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@Override
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public void onRestoreInstanceState(Bundle savedInstanceState) {
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super.onRestoreInstanceState(savedInstanceState);
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final ScrollView scrollView = (ScrollView) findViewById(R.id.license_activity_scrollview);
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final int firstVisibleChar = savedInstanceState.getInt(STATE_SCROLL_POS);
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scrollView.post(
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new Runnable() {
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@Override
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public void run() {
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TextView textView = (TextView) findViewById(R.id.license_activity_textview);
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int firstVisibleLine = textView.getLayout().getLineForOffset(firstVisibleChar);
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int offset = textView.getLayout().getLineTop(firstVisibleLine);
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scrollView.scrollTo(0, offset);
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}
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});
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}
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@Override
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public boolean onOptionsItemSelected(final MenuItem item) {
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if (item.getItemId() == android.R.id.home) {
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finish();
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return true;
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}
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return super.onOptionsItemSelected(item);
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}
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}
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