src/com/android/nfc/cardemulation/AppChooserActivity.java - platform/packages/apps/Nfc - Git at Google

 /*
  * Copyright (C) 2013 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.nfc.cardemulation;

 import com.android.internal.R;
 import com.android.internal.app.AlertActivity;
 import com.android.internal.app.AlertController;

 import java.util.ArrayList;
 import java.util.List;

 import android.app.ActivityManager;
 import android.content.BroadcastReceiver;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageManager;
 import android.content.pm.PackageManager.NameNotFoundException;
 import android.graphics.drawable.Drawable;
 import android.nfc.NfcAdapter;
 import android.nfc.cardemulation.ApduServiceInfo;
 import android.nfc.cardemulation.CardEmulation;
 import android.os.Bundle;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.Window;
 import android.view.WindowManager;
 import android.widget.AdapterView;
 import android.widget.BaseAdapter;
 import android.widget.ImageView;
 import android.widget.ListView;
 import android.widget.TextView;

 public class AppChooserActivity extends AlertActivity
         implements AdapterView.OnItemClickListener {

     static final String TAG = "AppChooserActivity";

     public static final String EXTRA_APDU_SERVICES = "services";
     public static final String EXTRA_CATEGORY = "category";
     public static final String EXTRA_FAILED_COMPONENT = "failed_component";

     private int mIconSize;
     private ListView mListView;
     private ListAdapter mListAdapter;
     private CardEmulation mCardEmuManager;
     private String mCategory;

     final BroadcastReceiver mReceiver = new BroadcastReceiver() {
         @Override
         public void onReceive(Context context, Intent intent) {
             finish();
         }
     };

     @Override
     protected void onDestroy() {
         super.onDestroy();
         unregisterReceiver(mReceiver);
     }

     protected void onCreate(Bundle savedInstanceState, String category,
             ArrayList<ApduServiceInfo> options, ComponentName failedComponent) {
         super.onCreate(savedInstanceState);
         setTheme(R.style.Theme_DeviceDefault_Light_Dialog_Alert);

         IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_OFF);
         registerReceiver(mReceiver, filter);

         if ((options == null || options.size() == 0) && failedComponent == null) {
             Log.e(TAG, "No components passed in.");
             finish();
             return;
         }

         mCategory = category;
         boolean isPayment = CardEmulation.CATEGORY_PAYMENT.equals(mCategory);

         final NfcAdapter adapter = NfcAdapter.getDefaultAdapter(this);
         mCardEmuManager = CardEmulation.getInstance(adapter);
         AlertController.AlertParams ap = mAlertParams;

         final ActivityManager am = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
         mIconSize = am.getLauncherLargeIconSize();

         // Three cases:
         // 1. Failed component and no alternatives: just an OK box
         // 2. Failed component and alternatives: pick alternative
         // 3. No failed component and alternatives: pick alternative
         PackageManager pm = getPackageManager();

         CharSequence applicationLabel = "unknown";
         if (failedComponent != null) {
             try {
                 ApplicationInfo info = pm.getApplicationInfo(failedComponent.getPackageName(), 0);
                 applicationLabel = info.loadLabel(pm);
             } catch (NameNotFoundException e) {
             }

         }
         if (options.size() == 0 && failedComponent != null) {
             String formatString = getString(com.android.nfc.R.string.transaction_failure);
             ap.mTitle = "";
             ap.mMessage = String.format(formatString, applicationLabel);
             ap.mPositiveButtonText = getString(R.string.ok);
             setupAlert();
         } else {
             mListAdapter = new ListAdapter(this, options);
             if (failedComponent != null) {
                 String formatString = getString(com.android.nfc.R.string.could_not_use_app);
                 ap.mTitle = String.format(formatString, applicationLabel);
                 ap.mNegativeButtonText = getString(R.string.cancel);
             } else {
                 if (CardEmulation.CATEGORY_PAYMENT.equals(category)) {
                     ap.mTitle = getString(com.android.nfc.R.string.pay_with);
                 } else {
                     ap.mTitle = getString(com.android.nfc.R.string.complete_with);
                 }
             }
             ap.mView = getLayoutInflater().inflate(com.android.nfc.R.layout.cardemu_resolver, null);

             mListView = (ListView) ap.mView.findViewById(com.android.nfc.R.id.resolver_list);
             if (isPayment) {
                 mListView.setDivider(getResources().getDrawable(android.R.color.transparent));
                 int height = (int) (getResources().getDisplayMetrics().density * 16);
                 mListView.setDividerHeight(height);
             } else {
                 mListView.setPadding(0, 0, 0, 0);
             }
             mListView.setAdapter(mListAdapter);
             mListView.setOnItemClickListener(this);

             setupAlert();
         }
         Window window = getWindow();
         window.addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);
     }

     @Override
     protected void onCreate(Bundle savedInstanceState) {
         Intent intent = getIntent();
         ArrayList<ApduServiceInfo> services = intent.getParcelableArrayListExtra(EXTRA_APDU_SERVICES);
         String category = intent.getStringExtra(EXTRA_CATEGORY);
         ComponentName failedComponent = intent.getParcelableExtra(EXTRA_FAILED_COMPONENT);
         onCreate(savedInstanceState, category, services, failedComponent);
     }

     @Override
     public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
         DisplayAppInfo info = (DisplayAppInfo) mListAdapter.getItem(position);
         mCardEmuManager.setDefaultForNextTap(info.serviceInfo.getComponent());
         Intent dialogIntent = new Intent(this, TapAgainDialog.class);
         dialogIntent.putExtra(TapAgainDialog.EXTRA_CATEGORY, mCategory);
         dialogIntent.putExtra(TapAgainDialog.EXTRA_APDU_SERVICE, info.serviceInfo);
         startActivity(dialogIntent);
         finish();
     }

     final class DisplayAppInfo {
         ApduServiceInfo serviceInfo;
         CharSequence displayLabel;
         Drawable displayIcon;
         Drawable displayBanner;

         public DisplayAppInfo(ApduServiceInfo serviceInfo, CharSequence label, Drawable icon,
                 Drawable banner) {
             this.serviceInfo = serviceInfo;
             displayIcon = icon;
             displayLabel = label;
             displayBanner = banner;
         }
     }

     final class ListAdapter extends BaseAdapter {
         private final LayoutInflater mInflater;
         private final boolean mIsPayment;
         private List<DisplayAppInfo> mList;

         public ListAdapter(Context context, ArrayList<ApduServiceInfo> services) {
             mInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
             // For each component, get the corresponding app name and icon
             PackageManager pm = getPackageManager();
             mList = new ArrayList<DisplayAppInfo>();
             mIsPayment = CardEmulation.CATEGORY_PAYMENT.equals(mCategory);
             for (ApduServiceInfo service : services) {
                 CharSequence label = service.getDescription();
                 if (label == null) label = service.loadLabel(pm);
                 Drawable icon = service.loadIcon(pm);
                 Drawable banner = null;
                 if (mIsPayment) {
                     banner = service.loadBanner(pm);
                     if (banner == null) {
                         Log.e(TAG, "Not showing " + label + " because no banner specified.");
                         continue;
                     }
                 }
                 DisplayAppInfo info = new DisplayAppInfo(service, label, icon, banner);
                 mList.add(info);
             }
         }

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

         @Override
         public Object getItem(int position) {
             return mList.get(position);
         }

         @Override
         public long getItemId(int position) {
             return position;
         }

         @Override
         public View getView(int position, View convertView, ViewGroup parent) {
             View view;
             if (convertView == null) {
                 if (mIsPayment) {
                     view = mInflater.inflate(
                             com.android.nfc.R.layout.cardemu_payment_item, parent, false);
                 } else {
                     view = mInflater.inflate(
                             com.android.nfc.R.layout.cardemu_item, parent, false);
                 }
                 final ViewHolder holder = new ViewHolder(view);
                 view.setTag(holder);

             } else {
                 view = convertView;
             }

             final ViewHolder holder = (ViewHolder) view.getTag();
             DisplayAppInfo appInfo = mList.get(position);
             if (mIsPayment) {
                 holder.banner.setImageDrawable(appInfo.displayBanner);
             } else {
                 ViewGroup.LayoutParams lp = holder.icon.getLayoutParams();
                 lp.width = lp.height = mIconSize;
                 holder.icon.setImageDrawable(appInfo.displayIcon);
                 holder.text.setText(appInfo.displayLabel);
             }
             return view;
         }
     }

     static class ViewHolder {
         public TextView text;
         public ImageView icon;
         public ImageView banner;
         public ViewHolder(View view) {
             text = (TextView) view.findViewById(com.android.nfc.R.id.applabel);
             icon = (ImageView) view.findViewById(com.android.nfc.R.id.appicon);
             banner = (ImageView) view.findViewById(com.android.nfc.R.id.banner);
         }
     }
 }
	/*
	* Copyright (C) 2013 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.nfc.cardemulation;

	import com.android.internal.R;
	import com.android.internal.app.AlertActivity;
	import com.android.internal.app.AlertController;

	import java.util.ArrayList;
	import java.util.List;

	import android.app.ActivityManager;
	import android.content.BroadcastReceiver;
	import android.content.ComponentName;
	import android.content.Context;
	import android.content.Intent;
	import android.content.IntentFilter;
	import android.content.pm.ApplicationInfo;
	import android.content.pm.PackageManager;
	import android.content.pm.PackageManager.NameNotFoundException;
	import android.graphics.drawable.Drawable;
	import android.nfc.NfcAdapter;
	import android.nfc.cardemulation.ApduServiceInfo;
	import android.nfc.cardemulation.CardEmulation;
	import android.os.Bundle;
	import android.util.Log;
	import android.view.LayoutInflater;
	import android.view.View;
	import android.view.ViewGroup;
	import android.view.Window;
	import android.view.WindowManager;
	import android.widget.AdapterView;
	import android.widget.BaseAdapter;
	import android.widget.ImageView;
	import android.widget.ListView;
	import android.widget.TextView;

	public class AppChooserActivity extends AlertActivity
	implements AdapterView.OnItemClickListener {

	static final String TAG = "AppChooserActivity";

	public static final String EXTRA_APDU_SERVICES = "services";
	public static final String EXTRA_CATEGORY = "category";
	public static final String EXTRA_FAILED_COMPONENT = "failed_component";

	private int mIconSize;
	private ListView mListView;
	private ListAdapter mListAdapter;
	private CardEmulation mCardEmuManager;
	private String mCategory;

	final BroadcastReceiver mReceiver = new BroadcastReceiver() {
	@Override
	public void onReceive(Context context, Intent intent) {
	finish();
	}
	};

	@Override
	protected void onDestroy() {
	super.onDestroy();
	unregisterReceiver(mReceiver);
	}

	protected void onCreate(Bundle savedInstanceState, String category,
	ArrayList<ApduServiceInfo> options, ComponentName failedComponent) {
	super.onCreate(savedInstanceState);
	setTheme(R.style.Theme_DeviceDefault_Light_Dialog_Alert);

	IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_OFF);
	registerReceiver(mReceiver, filter);

	if ((options == null \|\| options.size() == 0) && failedComponent == null) {
	Log.e(TAG, "No components passed in.");
	finish();
	return;
	}

	mCategory = category;
	boolean isPayment = CardEmulation.CATEGORY_PAYMENT.equals(mCategory);

	final NfcAdapter adapter = NfcAdapter.getDefaultAdapter(this);
	mCardEmuManager = CardEmulation.getInstance(adapter);
	AlertController.AlertParams ap = mAlertParams;

	final ActivityManager am = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
	mIconSize = am.getLauncherLargeIconSize();

	// Three cases:
	// 1. Failed component and no alternatives: just an OK box
	// 2. Failed component and alternatives: pick alternative
	// 3. No failed component and alternatives: pick alternative
	PackageManager pm = getPackageManager();

	CharSequence applicationLabel = "unknown";
	if (failedComponent != null) {
	try {
	ApplicationInfo info = pm.getApplicationInfo(failedComponent.getPackageName(), 0);
	applicationLabel = info.loadLabel(pm);
	} catch (NameNotFoundException e) {
	}

	}
	if (options.size() == 0 && failedComponent != null) {
	String formatString = getString(com.android.nfc.R.string.transaction_failure);
	ap.mTitle = "";
	ap.mMessage = String.format(formatString, applicationLabel);
	ap.mPositiveButtonText = getString(R.string.ok);
	setupAlert();
	} else {
	mListAdapter = new ListAdapter(this, options);
	if (failedComponent != null) {
	String formatString = getString(com.android.nfc.R.string.could_not_use_app);
	ap.mTitle = String.format(formatString, applicationLabel);
	ap.mNegativeButtonText = getString(R.string.cancel);
	} else {
	if (CardEmulation.CATEGORY_PAYMENT.equals(category)) {
	ap.mTitle = getString(com.android.nfc.R.string.pay_with);
	} else {
	ap.mTitle = getString(com.android.nfc.R.string.complete_with);
	}
	}
	ap.mView = getLayoutInflater().inflate(com.android.nfc.R.layout.cardemu_resolver, null);

	mListView = (ListView) ap.mView.findViewById(com.android.nfc.R.id.resolver_list);
	if (isPayment) {
	mListView.setDivider(getResources().getDrawable(android.R.color.transparent));
	int height = (int) (getResources().getDisplayMetrics().density * 16);
	mListView.setDividerHeight(height);
	} else {
	mListView.setPadding(0, 0, 0, 0);
	}
	mListView.setAdapter(mListAdapter);
	mListView.setOnItemClickListener(this);

	setupAlert();
	}
	Window window = getWindow();
	window.addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);
	}

	@Override
	protected void onCreate(Bundle savedInstanceState) {
	Intent intent = getIntent();
	ArrayList<ApduServiceInfo> services = intent.getParcelableArrayListExtra(EXTRA_APDU_SERVICES);
	String category = intent.getStringExtra(EXTRA_CATEGORY);
	ComponentName failedComponent = intent.getParcelableExtra(EXTRA_FAILED_COMPONENT);
	onCreate(savedInstanceState, category, services, failedComponent);
	}

	@Override
	public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
	DisplayAppInfo info = (DisplayAppInfo) mListAdapter.getItem(position);
	mCardEmuManager.setDefaultForNextTap(info.serviceInfo.getComponent());
	Intent dialogIntent = new Intent(this, TapAgainDialog.class);
	dialogIntent.putExtra(TapAgainDialog.EXTRA_CATEGORY, mCategory);
	dialogIntent.putExtra(TapAgainDialog.EXTRA_APDU_SERVICE, info.serviceInfo);
	startActivity(dialogIntent);
	finish();
	}

	final class DisplayAppInfo {
	ApduServiceInfo serviceInfo;
	CharSequence displayLabel;
	Drawable displayIcon;
	Drawable displayBanner;

	public DisplayAppInfo(ApduServiceInfo serviceInfo, CharSequence label, Drawable icon,
	Drawable banner) {
	this.serviceInfo = serviceInfo;
	displayIcon = icon;
	displayLabel = label;
	displayBanner = banner;
	}
	}

	final class ListAdapter extends BaseAdapter {
	private final LayoutInflater mInflater;
	private final boolean mIsPayment;
	private List<DisplayAppInfo> mList;

	public ListAdapter(Context context, ArrayList<ApduServiceInfo> services) {
	mInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
	// For each component, get the corresponding app name and icon
	PackageManager pm = getPackageManager();
	mList = new ArrayList<DisplayAppInfo>();
	mIsPayment = CardEmulation.CATEGORY_PAYMENT.equals(mCategory);
	for (ApduServiceInfo service : services) {
	CharSequence label = service.getDescription();
	if (label == null) label = service.loadLabel(pm);
	Drawable icon = service.loadIcon(pm);
	Drawable banner = null;
	if (mIsPayment) {
	banner = service.loadBanner(pm);
	if (banner == null) {
	Log.e(TAG, "Not showing " + label + " because no banner specified.");
	continue;
	}
	}
	DisplayAppInfo info = new DisplayAppInfo(service, label, icon, banner);
	mList.add(info);
	}
	}

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

	@Override
	public Object getItem(int position) {
	return mList.get(position);
	}

	@Override
	public long getItemId(int position) {
	return position;
	}

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
	View view;
	if (convertView == null) {
	if (mIsPayment) {
	view = mInflater.inflate(
	com.android.nfc.R.layout.cardemu_payment_item, parent, false);
	} else {
	view = mInflater.inflate(
	com.android.nfc.R.layout.cardemu_item, parent, false);
	}
	final ViewHolder holder = new ViewHolder(view);
	view.setTag(holder);

	} else {
	view = convertView;
	}

	final ViewHolder holder = (ViewHolder) view.getTag();
	DisplayAppInfo appInfo = mList.get(position);
	if (mIsPayment) {
	holder.banner.setImageDrawable(appInfo.displayBanner);
	} else {
	ViewGroup.LayoutParams lp = holder.icon.getLayoutParams();
	lp.width = lp.height = mIconSize;
	holder.icon.setImageDrawable(appInfo.displayIcon);
	holder.text.setText(appInfo.displayLabel);
	}
	return view;
	}
	}

	static class ViewHolder {
	public TextView text;
	public ImageView icon;
	public ImageView banner;
	public ViewHolder(View view) {
	text = (TextView) view.findViewById(com.android.nfc.R.id.applabel);
	icon = (ImageView) view.findViewById(com.android.nfc.R.id.appicon);
	banner = (ImageView) view.findViewById(com.android.nfc.R.id.banner);
	}
	}
	}