net.tentrup.einsatzserver.InfoActivity.java Source code

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Here is the source code for net.tentrup.einsatzserver.InfoActivity.java

Source

package net.tentrup.einsatzserver;

import greendroid.app.GDActivity;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager.NameNotFoundException;
import android.os.Bundle;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.text.Html;
import android.text.method.LinkMovementMethod;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebView;
import android.widget.ScrollView;
import android.widget.TextView;

import com.viewpagerindicator.PageIndicator;
import com.viewpagerindicator.TabPageIndicator;
import com.viewpagerindicator.TitleProvider;

/**
 * Dialog which shows some information about the application.
 * 
 * @author Tentrup
 *
 */
public class InfoActivity extends GDActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setTitle(createTitle());
        setActionBarContentView(R.layout.info_tabs);
        PagerAdapter mAdapter = new InfoPagerAdapter();
        ViewPager mPager = (ViewPager) findViewById(R.id.pager);
        mPager.setAdapter(mAdapter);
        PageIndicator mIndicator = (TabPageIndicator) findViewById(R.id.indicator);
        mIndicator.setViewPager(mPager);
    }

    private String createTitle() {
        StringBuilder infoTextBuilder = new StringBuilder();
        infoTextBuilder.append(getString(R.string.app_name));
        try {
            PackageInfo pinfo = getPackageManager().getPackageInfo(getPackageName(), 0);
            String versionName = pinfo.versionName;
            infoTextBuilder.append(" v");
            infoTextBuilder.append(versionName);
        } catch (NameNotFoundException e) {
            e.printStackTrace();
        }
        return infoTextBuilder.toString();
    }

    private class InfoPagerAdapter extends PagerAdapter implements TitleProvider {

        private List<String> itemLabels = new ArrayList<String>();
        private List<View> itemViews = new ArrayList<View>();

        public InfoPagerAdapter() {
            addTab(getString(R.string.about_title),
                    createTextView(Html.fromHtml(readAboutText(InfoActivity.this))));
            addTab(getString(R.string.changes_title),
                    createWebView(RecentChanges.readRecentChanges(InfoActivity.this)));
            addTab(getString(R.string.license_title), createTextView(Eula.readEula(InfoActivity.this)));
        }

        private void addTab(String title, View contentView) {
            itemLabels.add(title);
            ScrollView view = (ScrollView) getLayoutInflater().inflate(R.layout.info_tab, null);
            view.addView(contentView);
            itemViews.add(view);
        }

        private TextView createTextView(CharSequence content) {
            TextView tabContent = (TextView) getLayoutInflater().inflate(R.layout.info_tab_textview, null);
            tabContent.setText(content);
            tabContent.setMovementMethod(LinkMovementMethod.getInstance());
            return tabContent;
        }

        private WebView createWebView(String content) {
            WebView webView = new WebView(InfoActivity.this);
            webView.loadDataWithBaseURL(null, content, "text/html", "UTF-8", null);
            return webView;
        }

        @Override
        public String getTitle(int position) {
            return itemLabels.get(position).toUpperCase();
        }

        @Override
        public int getCount() {
            return itemLabels.size();
        }

        @Override
        public Object instantiateItem(ViewGroup container, int position) {
            View item = itemViews.get(position);
            container.addView(item, 0);
            return item;
        }

        @Override
        public void destroyItem(ViewGroup container, int position, Object object) {
            container.removeView((View) object);
        }

        @Override
        public boolean isViewFromObject(View view, Object object) {
            return view == object;
        }
    }

    private static String readAboutText(Activity activity) {
        BufferedReader reader = null;
        try {
            InputStream stream = activity.getResources().openRawResource(R.raw.about);
            reader = new BufferedReader(new InputStreamReader(stream));
            String line;
            StringBuilder buffer = new StringBuilder();
            while ((line = reader.readLine()) != null) {
                buffer.append(line).append(System.getProperty("line.separator"));
            }
            return buffer.toString();
        } catch (IOException e) {
            e.printStackTrace();
            return "";
        } finally {
            if (reader != null) {
                try {
                    reader.close();
                } catch (IOException exc) {
                    // Ignore
                }
            }
        }
    }

}