Java tutorial
package org.deviceconnect.android.manager.setting; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.InputStream; import java.util.List; import java.util.logging.Logger; import org.apache.http.protocol.HTTP; import org.deviceconnect.android.manager.R; import android.app.DialogFragment; import android.content.Context; import android.os.Bundle; import android.os.Parcel; import android.os.Parcelable; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ArrayAdapter; import android.widget.FrameLayout; import android.widget.ListView; import android.widget.TextView; /** * . */ public class OpenSourceLicenseFragment extends DialogFragment { /** * :open_source_software. */ public static final String EXTRA_OSS = "open_source_software"; /** * . */ private Logger mLogger = Logger.getLogger("dconnect.uiapp"); @Override public View onCreateView(final LayoutInflater inflater, final ViewGroup container, final Bundle savedInstanceState) { mLogger.entering(getClass().getName(), "onCreateView", new Object[] { inflater, container, savedInstanceState }); FrameLayout lframe = new FrameLayout(getActivity()); ListView lv = new ListView(getActivity()); lv.setId(android.R.id.list); lv.setDrawSelectorOnTop(false); lframe.addView(lv, new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT)); lframe.setBackgroundColor(getResources().getColor(android.R.color.background_light)); ArrayAdapter<Parcelable> adapter = new SoftwareArrayAdapter(getActivity(), R.layout.item_open_source_licenses); if (getArguments() != null && getArguments().containsKey(EXTRA_OSS)) { adapter.addAll(getArguments().getParcelableArrayList(EXTRA_OSS)); } ListView listView = (ListView) lframe.findViewById(android.R.id.list); listView.setAdapter(adapter); getDialog().setTitle(R.string.activity_settings_open_source_licenses); mLogger.exiting(getClass().getName(), "onCreateView", lframe); return lframe; } /** * OpenSourceSoftware??. * @param software ?? * @param resId ID * @return OpenSourceSoftware */ public static OpenSourceSoftware createOpenSourceSoftware(final String software, final int resId) { return new OpenSourceSoftware(software, resId); } /** * . */ public static class OpenSourceSoftware implements Parcelable { /** * ?. */ private static final int BUFFER_SIZE = 1024; /** * ??. */ private String mSoftware; /** * . */ private String mLicenseText; /** * ID. */ private int mLicenseResource; /** * Parcelable. */ public static final Parcelable.Creator<OpenSourceSoftware> CREATOR = new Parcelable.Creator<OpenSourceSoftware>() { public OpenSourceSoftware createFromParcel(final Parcel in) { return new OpenSourceSoftware(in); } public OpenSourceSoftware[] newArray(final int size) { return new OpenSourceSoftware[size]; } }; /** * . * @param software ?? * @param resId ID */ public OpenSourceSoftware(final String software, final int resId) { mSoftware = software; mLicenseResource = resId; } /** * Parcelable. * @param in */ private OpenSourceSoftware(final Parcel in) { mSoftware = in.readString(); mLicenseResource = in.readInt(); } @Override public int describeContents() { return 0; } @Override public void writeToParcel(final Parcel dest, final int flags) { dest.writeString(mSoftware); dest.writeInt(mLicenseResource); } /** * ????. * @return ?? */ public String getSoftwareName() { return mSoftware; } /** * ??. * @return */ public String getLicenseText() { return mLicenseText; } /** * ?. * @param context * @throws IOException I/O???? */ public void loadLicenseText(final Context context) throws IOException { if (mLicenseText != null) { return; } if (mLicenseResource <= 0) { return; } InputStream is = null; try { ByteArrayOutputStream os = new ByteArrayOutputStream(); is = context.getResources().openRawResource(mLicenseResource); byte[] buf = new byte[BUFFER_SIZE]; while (true) { int len = is.read(buf); if (len < 0) { break; } os.write(buf, 0, len); } mLicenseText = new String(os.toByteArray(), HTTP.UTF_8); } finally { if (is != null) { try { is.close(); } catch (IOException e) { e.printStackTrace(); } } } } } /** * ?. */ private class SoftwareArrayAdapter extends ArrayAdapter<Parcelable> { /** * ID. */ private int mResourceId; /** * . * @param context * @param resource ID */ public SoftwareArrayAdapter(final Context context, final int resource) { super(context, resource); mLogger.entering(getClass().getName(), "SoftwareArrayAdapter", new Object[] { context, resource }); mResourceId = resource; mLogger.exiting(getClass().getName(), "SoftwareArrayAdapter"); } /** * . * @param context * @param resource ID * @param objects */ public SoftwareArrayAdapter(final Context context, final int resource, final List<Parcelable> objects) { super(context, resource, objects); mLogger.entering(getClass().getName(), "SoftwareArrayAdapter", new Object[] { context, resource, objects }); mResourceId = resource; mLogger.exiting(getClass().getName(), "SoftwareArrayAdapter"); } /** * . * @param context * @param resource ID * @param objects */ public SoftwareArrayAdapter(final Context context, final int resource, final OpenSourceSoftware[] objects) { super(context, resource, objects); mLogger.entering(getClass().getName(), "SoftwareArrayAdapter", new Object[] { context, resource, objects }); mResourceId = resource; mLogger.exiting(getClass().getName(), "SoftwareArrayAdapter"); } @Override public View getView(final int position, final View convertView, final ViewGroup parent) { mLogger.entering(getClass().getName(), "getView", new Object[] { position, convertView, parent }); View view; if (convertView != null) { view = convertView; } else { LayoutInflater inflater = LayoutInflater.from(getContext()); view = inflater.inflate(mResourceId, null); } OpenSourceSoftware item = (OpenSourceSoftware) getItem(position); if (item.getLicenseText() == null) { try { item.loadLicenseText(getContext()); } catch (IOException e) { mLogger.warning(e.toString()); } } TextView titleView = (TextView) view.findViewById(android.R.id.text1); titleView.setText(item.getSoftwareName()); TextView bodyView = (TextView) view.findViewById(android.R.id.text2); bodyView.setVisibility(View.VISIBLE); bodyView.setText(item.getLicenseText()); mLogger.exiting(getClass().getName(), "getView", view); return view; } } }