thoerup/androidutils/CheckUpdates.java

package dk.thoerup.androidutils;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.RandomAccessFile;
import java.net.URL;
import java.net.URLConnection;

import android.app.AlertDialog;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.DialogInterface.OnClickListener;
import android.content.SharedPreferences.Editor;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Environment;
import android.util.Log;

public class CheckUpdates {
        final static long TIMESPAN_DAY = 24*60*60*1000; // one day
        
        final static String CHECKUPDATES = "CheckUpdates";
        final static String LASTCHECK = "lastcheck";
        
        int versionCode;
        String versionName;
        String packageName;
        String phone_model;
        String androidVersion;
        
        String title;
        
        
        Context context;

        public void checkForUpdates(Context context, String url, String title,  String apkUrl) {
                checkForUpdates(context, url, title,  apkUrl, false);
        }

        public void checkForUpdates(Context context, String url, String title,  String apkUrl, boolean forced) {
                this.context = context;
                this.title = title;
                
                SharedPreferences prefs = context.getSharedPreferences(CHECKUPDATES, Context.MODE_PRIVATE);
                        
                long lastCheck = prefs.getLong(LASTCHECK, 0);           

                long now = System.currentTimeMillis(); //should i use  android.os.SystemClock.elapsedRealtime() instead ?
                Log.i(CHECKUPDATES, "Now=" + now + ",  lastCheck=" + lastCheck + ", lastCheck+timespan=" + (lastCheck + TIMESPAN_DAY) );
                
                if ( now > (lastCheck+TIMESPAN_DAY) ){

                        PackageManager pm = context.getPackageManager();
                        try {
                                PackageInfo pi;

                                pi = pm.getPackageInfo(context.getPackageName(), 0);

                                versionCode = pi.versionCode;
                                versionName = pi.versionName;
                                packageName = pi.packageName;
                                phone_model = android.os.Build.MODEL;
                                androidVersion = android.os.Build.VERSION.RELEASE;
                                
        
                                UpdateTask task = new UpdateTask(forced);
                                task.execute(url, apkUrl);
                                

                        } catch (NameNotFoundException e) {
                                Log.e(CHECKUPDATES, "NamingException", e);
                        }

                }
        }
        
        
        class UpdateTask extends AsyncTask<String,Void,Void> {
                boolean result = false;
                int newestVersion = 0;
                
                String apkUrl;
                
                boolean forced = false;
                
                public UpdateTask(boolean forced) {
                        this.forced = forced;
                }

                @Override
                protected Void doInBackground(String... arg0) {                 
                        String requestUrl = arg0[0] + "?version=" + encode(versionName) + "&phone=" + encode(phone_model) + "&android=" + encode(androidVersion);
                        apkUrl = arg0[1];
                        
                        try {
                                URL url = new URL(requestUrl);
                                URLConnection conn = url.openConnection();
                                conn.setConnectTimeout(2500);
                                                                
                                String resultStr = readIOStream( conn.getInputStream() );
                                resultStr = resultStr.trim();
                                newestVersion = Integer.parseInt(resultStr);
                                
                                result = true;
                                
                        } catch (Exception e) {
                                Log.e(CHECKUPDATES, "Check for " + packageName + " failed!", e);
                        }
                                                
                        return null;
                }
                
                private String encode(String data) {
                        try {
                                return java.net.URLEncoder.encode(data, "UTF-8");
                        } catch (Exception e) {
                                return data; //if encoding fails, return original and hope all goes well
                        }
                }
                
                private String readIOStream(InputStream in) throws IOException {
                        ByteArrayOutputStream baos = new ByteArrayOutputStream();
                        
                        byte buf[] = new byte[1024];
                        int len;
                        
                        while ( (len=in.read(buf)) != -1) {
                                baos.write(buf, 0, len);
                        }
                        
                        return baos.toString(); 
                }

                @Override
                protected void onPostExecute(Void r) {
                        super.onPostExecute(r);
                        
                        Log.i(CHECKUPDATES, "result=" + result + ", newestVersion" + newestVersion + ", versionCode=" + versionCode);
                        
                        if (result == true) {
                                
                                long now = System.currentTimeMillis();
                                SharedPreferences prefs = context.getSharedPreferences(CHECKUPDATES, Context.MODE_PRIVATE);
                                //when done write 
                                
                                Editor edit = prefs.edit();
                                edit.putLong(LASTCHECK, now );
                                edit.commit();
                                
                                
                                if (newestVersion > versionCode) {                      
                                        String launchUrl = (apkUrl == null) ? "market://search?q=pname:" + packageName : apkUrl;
                                        
                                        if (forced == true) { 
                                                forcedUpdate(launchUrl);
                                        } else {
                                                //showUpdateDialog(launchUrl);
                                                showNotification(launchUrl);
                                        }
                                }
                                
                        }
                        
                }
                
                private void forcedUpdate(String apkUrl) {
                        Log.e(CHECKUPDATES, "Forced update started");
                        try {
                                byte[] apkData = HttpUtil.getContent(apkUrl, 5000);
                                File tempFile = new File( Environment.getExternalStorageDirectory() + "/"  + HttpUtil.getLastPart(apkUrl) );
                                
                                if (tempFile.exists()) {
                                        tempFile.delete();
                                }
                                
                                RandomAccessFile raf = new RandomAccessFile(tempFile,"rw");
                                raf.write(apkData);
                                
                                Log.e(CHECKUPDATES, "File:" + tempFile.getPath());
                                
                                
                                Intent i =new Intent();
                                i.setAction(Intent.ACTION_VIEW);
                                i.setDataAndType( Uri.fromFile(tempFile), "application/vnd.android.package-archive");
                                i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK );


                                try {
                                        context.startActivity(i);
                                } catch (Exception e) {
                                        Log.e(CHECKUPDATES, "Activity launch failed", e); 
                                }
                                context = null;
                                 
                        } catch (Exception e) {
                                Log.e(CHECKUPDATES, "forcedUpdate failed", e);
                        }
                }
                
                private void showNotification(String launchUrl) {
                        NotificationManager nm = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
                        //int icon = android.R.drawable.sym_action_email; //TODO: find a better icon
                        int icon = R.drawable.searchicon;
                        
                        
                        Notification notification = new Notification(icon, "Update available", System.currentTimeMillis() );
                        notification.flags |= Notification.FLAG_AUTO_CANCEL ;
                        
                        CharSequence contentTitle = title;
                        CharSequence contentText = "New version available.";
                        Intent notificationIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(launchUrl) );
                        notificationIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK );
                        PendingIntent contentIntent = PendingIntent.getActivity(context, 0, notificationIntent, 0);

                        notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);
                        
                        nm.notify(1, notification);
                        
                }

                private void showUpdateDialog(final String launchUrl) {
                        AlertDialog.Builder builder = new AlertDialog.Builder(context);
                        builder.setTitle(title);
                        builder.setMessage("This application has an a newer version available. Update now?");
                        
                        builder.setPositiveButton("Yes", new OnClickListener() {                                                
                                public void onClick(DialogInterface dialog, int which) {

                                        
                                        Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse(launchUrl) );
                                        i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK );
                                        try {
                                                context.startActivity(i);
                                        } catch (Exception e) {
                                                Log.e(CHECKUPDATES, "Activity launch failed", e);
                                        }
                                        context = null;
                                        
                                }
                        });
                        builder.setNegativeButton("No", new OnClickListener() {
                                public void onClick(DialogInterface dialog, int which) {
                                        context = null;
                                }
                        });
                        
                        try {
                                builder.show();
                        } catch (Exception e) {
                                Log.e(CHECKUPDATES, "Builder.show failed", e);
                        }
                }
                
        }
        
        
}
1	package dk.thoerup.androidutils;
2
3	import java.io.ByteArrayOutputStream;
4	import java.io.File;
5	import java.io.IOException;
6	import java.io.InputStream;
7	import java.io.RandomAccessFile;
8	import java.net.URL;
9	import java.net.URLConnection;
10
11	import android.app.AlertDialog;
12	import android.app.Notification;
13	import android.app.NotificationManager;
14	import android.app.PendingIntent;
15	import android.content.Context;
16	import android.content.DialogInterface;
17	import android.content.Intent;
18	import android.content.SharedPreferences;
19	import android.content.DialogInterface.OnClickListener;
20	import android.content.SharedPreferences.Editor;
21	import android.content.pm.PackageInfo;
22	import android.content.pm.PackageManager;
23	import android.content.pm.PackageManager.NameNotFoundException;
24	import android.net.Uri;
25	import android.os.AsyncTask;
26	import android.os.Environment;
27	import android.util.Log;
28
29	public class CheckUpdates {
30	final static long TIMESPAN_DAY = 246060*1000; // one day
31
32	final static String CHECKUPDATES = "CheckUpdates";
33	final static String LASTCHECK = "lastcheck";
34
35	int versionCode;
36	String versionName;
37	String packageName;
38	String phone_model;
39	String androidVersion;
40
41	String title;
42
43
44	Context context;
45
46	public void checkForUpdates(Context context, String url, String title, String apkUrl) {
47	checkForUpdates(context, url, title, apkUrl, false);
48	}
49
50	public void checkForUpdates(Context context, String url, String title, String apkUrl, boolean forced) {
51	this.context = context;
52	this.title = title;
53
54	SharedPreferences prefs = context.getSharedPreferences(CHECKUPDATES, Context.MODE_PRIVATE);
55
56	long lastCheck = prefs.getLong(LASTCHECK, 0);
57
58	long now = System.currentTimeMillis(); //should i use android.os.SystemClock.elapsedRealtime() instead ?
59	Log.i(CHECKUPDATES, "Now=" + now + ", lastCheck=" + lastCheck + ", lastCheck+timespan=" + (lastCheck + TIMESPAN_DAY) );
60
61	if ( now > (lastCheck+TIMESPAN_DAY) ){
62
63	PackageManager pm = context.getPackageManager();
64	try {
65	PackageInfo pi;
66
67	pi = pm.getPackageInfo(context.getPackageName(), 0);
68
69	versionCode = pi.versionCode;
70	versionName = pi.versionName;
71	packageName = pi.packageName;
72	phone_model = android.os.Build.MODEL;
73	androidVersion = android.os.Build.VERSION.RELEASE;
74
75
76	UpdateTask task = new UpdateTask(forced);
77	task.execute(url, apkUrl);
78
79
80	} catch (NameNotFoundException e) {
81	Log.e(CHECKUPDATES, "NamingException", e);
82	}
83
84	}
85	}
86
87
88	class UpdateTask extends AsyncTask<String,Void,Void> {
89	boolean result = false;
90	int newestVersion = 0;
91
92	String apkUrl;
93
94	boolean forced = false;
95
96	public UpdateTask(boolean forced) {
97	this.forced = forced;
98	}
99
100	@Override
101	protected Void doInBackground(String... arg0) {
102	String requestUrl = arg0[0] + "?version=" + encode(versionName) + "&phone=" + encode(phone_model) + "&android=" + encode(androidVersion);
103	apkUrl = arg0[1];
104
105	try {
106	URL url = new URL(requestUrl);
107	URLConnection conn = url.openConnection();
108	conn.setConnectTimeout(2500);
109
110	String resultStr = readIOStream( conn.getInputStream() );
111	resultStr = resultStr.trim();
112	newestVersion = Integer.parseInt(resultStr);
113
114	result = true;
115
116	} catch (Exception e) {
117	Log.e(CHECKUPDATES, "Check for " + packageName + " failed!", e);
118	}
119
120	return null;
121	}
122
123	private String encode(String data) {
124	try {
125	return java.net.URLEncoder.encode(data, "UTF-8");
126	} catch (Exception e) {
127	return data; //if encoding fails, return original and hope all goes well
128	}
129	}
130
131	private String readIOStream(InputStream in) throws IOException {
132	ByteArrayOutputStream baos = new ByteArrayOutputStream();
133
134	byte buf[] = new byte[1024];
135	int len;
136
137	while ( (len=in.read(buf)) != -1) {
138	baos.write(buf, 0, len);
139	}
140
141	return baos.toString();
142	}
143
144	@Override
145	protected void onPostExecute(Void r) {
146	super.onPostExecute(r);
147
148	Log.i(CHECKUPDATES, "result=" + result + ", newestVersion" + newestVersion + ", versionCode=" + versionCode);
149
150	if (result == true) {
151
152	long now = System.currentTimeMillis();
153	SharedPreferences prefs = context.getSharedPreferences(CHECKUPDATES, Context.MODE_PRIVATE);
154	//when done write
155
156	Editor edit = prefs.edit();
157	edit.putLong(LASTCHECK, now );
158	edit.commit();
159
160
161	if (newestVersion > versionCode) {
162	String launchUrl = (apkUrl == null) ? "market://search?q=pname:" + packageName : apkUrl;
163
164	if (forced == true) {
165	forcedUpdate(launchUrl);
166	} else {
167	//showUpdateDialog(launchUrl);
168	showNotification(launchUrl);
169	}
170	}
171
172	}
173
174	}
175
176	private void forcedUpdate(String apkUrl) {
177	Log.e(CHECKUPDATES, "Forced update started");
178	try {
179	byte[] apkData = HttpUtil.getContent(apkUrl, 5000);
180	File tempFile = new File( Environment.getExternalStorageDirectory() + "/" + HttpUtil.getLastPart(apkUrl) );
181
182	if (tempFile.exists()) {
183	tempFile.delete();
184	}
185
186	RandomAccessFile raf = new RandomAccessFile(tempFile,"rw");
187	raf.write(apkData);
188
189	Log.e(CHECKUPDATES, "File:" + tempFile.getPath());
190
191
192
193	Intent i =new Intent();
194	i.setAction(Intent.ACTION_VIEW);
195	i.setDataAndType( Uri.fromFile(tempFile), "application/vnd.android.package-archive");
196	i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK );
197
198
199	try {
200	context.startActivity(i);
201	} catch (Exception e) {
202	Log.e(CHECKUPDATES, "Activity launch failed", e);
203	}
204	context = null;
205
206	} catch (Exception e) {
207	Log.e(CHECKUPDATES, "forcedUpdate failed", e);
208	}
209	}
210
211	private void showNotification(String launchUrl) {
212	NotificationManager nm = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
213	//int icon = android.R.drawable.sym_action_email; //TODO: find a better icon
214	int icon = R.drawable.searchicon;
215
216
217	Notification notification = new Notification(icon, "Update available", System.currentTimeMillis() );
218	notification.flags \|= Notification.FLAG_AUTO_CANCEL ;
219
220	CharSequence contentTitle = title;
221	CharSequence contentText = "New version available.";
222	Intent notificationIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(launchUrl) );
223	notificationIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK );
224	PendingIntent contentIntent = PendingIntent.getActivity(context, 0, notificationIntent, 0);
225
226	notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);
227
228	nm.notify(1, notification);
229
230	}
231
232	private void showUpdateDialog(final String launchUrl) {
233	AlertDialog.Builder builder = new AlertDialog.Builder(context);
234	builder.setTitle(title);
235	builder.setMessage("This application has an a newer version available. Update now?");
236
237	builder.setPositiveButton("Yes", new OnClickListener() {
238	public void onClick(DialogInterface dialog, int which) {
239
240
241	Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse(launchUrl) );
242	i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK );
243	try {
244	context.startActivity(i);
245	} catch (Exception e) {
246	Log.e(CHECKUPDATES, "Activity launch failed", e);
247	}
248	context = null;
249
250	}
251	});
252	builder.setNegativeButton("No", new OnClickListener() {
253	public void onClick(DialogInterface dialog, int which) {
254	context = null;
255	}
256	});
257
258	try {
259	builder.show();
260	} catch (Exception e) {
261	Log.e(CHECKUPDATES, "Builder.show failed", e);
262	}
263	}
264
265	}
266
267
268	}