package com.example.android.apis.app;
import com.example.android.apis.R;
import android.app.Activity;
import android.app.PendingIntent;
import android.app.PendingIntent.CanceledException;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
/**
* Example of various Intent flags to modify the activity stack.
*/
public class IntentActivityFlags extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.intent_activity_flags);
// Watch for button clicks.
Button button = (Button)findViewById(R.id.flag_activity_clear_task);
button.setOnClickListener(mFlagActivityClearTaskListener);
button = (Button)findViewById(R.id.flag_activity_clear_task_pi);
button.setOnClickListener(mFlagActivityClearTaskPIListener);
}
/**
* This creates an array of Intent objects representing the back stack
* for a user going into the Views/Lists API demos.
*/
private Intent[] buildIntentsToViewsLists() {
// We are going to rebuild our task with a new back stack. This will
// be done by launching an array of Intents, representing the new
// back stack to be created, with the first entry holding the root
// and requesting to reset the back stack.
Intent[] intents = new Intent[3];
// First: root activity of ApiDemos.
// This is a convenient way to make the proper Intent to launch and
// reset an application's task.
intents[0] = Intent.makeRestartActivityTask(new ComponentName(this,
com.example.android.apis.ApiDemos.class));
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.setClass(IntentActivityFlags.this, com.example.android.apis.ApiDemos.class);
intent.putExtra("com.example.android.apis.Path", "Views");
intents[1] = intent;
intent = new Intent(Intent.ACTION_MAIN);
intent.setClass(IntentActivityFlags.this, com.example.android.apis.ApiDemos.class);
intent.putExtra("com.example.android.apis.Path", "Views/Lists");
intents[2] = intent;
return intents;
}
private OnClickListener mFlagActivityClearTaskListener = new OnClickListener() {
public void onClick(View v) {
startActivities(buildIntentsToViewsLists());
}
};
private OnClickListener mFlagActivityClearTaskPIListener = new OnClickListener() {
public void onClick(View v) {
Context context = IntentActivityFlags.this;
PendingIntent pi = PendingIntent.getActivities(context, 0,
buildIntentsToViewsLists(), PendingIntent.FLAG_UPDATE_CURRENT);
try {
pi.send();
} catch (CanceledException e) {
Log.w("IntentActivityFlags", "Failed sending PendingIntent", e);
}
}
};
}
/*
* Copyright (C) 2007 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.example.android.apis;
import android.app.ListActivity;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.os.Bundle;
import android.view.View;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import java.text.Collator;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class ApiDemos extends ListActivity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Intent intent = getIntent();
String path = intent.getStringExtra("com.example.android.apis.Path");
if (path == null) {
path = "";
}
setListAdapter(new SimpleAdapter(this, getData(path),
android.R.layout.simple_list_item_1, new String[] { "title" },
new int[] { android.R.id.text1 }));
getListView().setTextFilterEnabled(true);
}
protected List> getData(String prefix) {
List> myData = new ArrayList>();
Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
mainIntent.addCategory(Intent.CATEGORY_SAMPLE_CODE);
PackageManager pm = getPackageManager();
List list = pm.queryIntentActivities(mainIntent, 0);
if (null == list)
return myData;
String[] prefixPath;
String prefixWithSlash = prefix;
if (prefix.equals("")) {
prefixPath = null;
} else {
prefixPath = prefix.split("/");
prefixWithSlash = prefix + "/";
}
int len = list.size();
Map entries = new HashMap();
for (int i = 0; i < len; i++) {
ResolveInfo info = list.get(i);
CharSequence labelSeq = info.loadLabel(pm);
String label = labelSeq != null
? labelSeq.toString()
: info.activityInfo.name;
if (prefixWithSlash.length() == 0 || label.startsWith(prefixWithSlash)) {
String[] labelPath = label.split("/");
String nextLabel = prefixPath == null ? labelPath[0] : labelPath[prefixPath.length];
if ((prefixPath != null ? prefixPath.length : 0) == labelPath.length - 1) {
addItem(myData, nextLabel, activityIntent(
info.activityInfo.applicationInfo.packageName,
info.activityInfo.name));
} else {
if (entries.get(nextLabel) == null) {
addItem(myData, nextLabel, browseIntent(prefix.equals("") ? nextLabel : prefix + "/" + nextLabel));
entries.put(nextLabel, true);
}
}
}
}
Collections.sort(myData, sDisplayNameComparator);
return myData;
}
private final static Comparator> sDisplayNameComparator =
new Comparator>() {
private final Collator collator = Collator.getInstance();
public int compare(Map map1, Map map2) {
return collator.compare(map1.get("title"), map2.get("title"));
}
};
protected Intent activityIntent(String pkg, String componentName) {
Intent result = new Intent();
result.setClassName(pkg, componentName);
return result;
}
protected Intent browseIntent(String path) {
Intent result = new Intent();
result.setClass(this, ApiDemos.class);
result.putExtra("com.example.android.apis.Path", path);
return result;
}
protected void addItem(List> data, String name, Intent intent) {
Map temp = new HashMap();
temp.put("title", name);
temp.put("intent", intent);
data.add(temp);
}
@Override
@SuppressWarnings("unchecked")
protected void onListItemClick(ListView l, View v, int position, long id) {
Map map = (Map)l.getItemAtPosition(position);
Intent intent = (Intent) map.get("intent");
startActivity(intent);
}
}
//layout/intent_activity_flags.xml
android:orientation="vertical" android:padding="4dip"
android:gravity="center_horizontal"
android:layout_width="match_parent" android:layout_height="match_parent">
android:layout_width="match_parent" android:layout_height="wrap_content"
android:layout_weight="0"
android:paddingBottom="4dip"
android:text="intent_activity_flags"/>
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:text="flag_activity_clear_task">
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:text="flag_activity_clear_task_pi">