thoerup/androidutils/CheckUpdates.java

package dk.thoerup.checkupdates;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
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.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) {
                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();
                                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;

                @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;
                                        //showUpdateDialog(launchUrl);
                                        showNotification(launchUrl);
                                }
                                
                        }
                        
                }
                
                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	torben	908	package dk.thoerup.checkupdates;
2
3			import java.io.ByteArrayOutputStream;
4			import java.io.IOException;
5			import java.io.InputStream;
6			import java.net.URL;
7			import java.net.URLConnection;
8
9			import android.app.AlertDialog;
10	torben	943	import android.app.Notification;
11			import android.app.NotificationManager;
12			import android.app.PendingIntent;
13	torben	908	import android.content.Context;
14			import android.content.DialogInterface;
15			import android.content.Intent;
16			import android.content.SharedPreferences;
17			import android.content.DialogInterface.OnClickListener;
18			import android.content.SharedPreferences.Editor;
19			import android.content.pm.PackageInfo;
20			import android.content.pm.PackageManager;
21			import android.content.pm.PackageManager.NameNotFoundException;
22			import android.net.Uri;
23			import android.os.AsyncTask;
24			import android.util.Log;
25
26			public class CheckUpdates {
27	torben	946	final static long TIMESPAN_DAY = 246060*1000; // one day
28	torben	943
29	torben	908	final static String CHECKUPDATES = "CheckUpdates";
30			final static String LASTCHECK = "lastcheck";
31
32			int versionCode;
33			String versionName;
34			String packageName;
35			String phone_model;
36			String androidVersion;
37
38			String title;
39
40
41	torben	910	Context context;
42	torben	908
43	torben	910
44			public void checkForUpdates(Context context, String url, String title, String apkUrl) {
45	torben	908	this.context = context;
46			this.title = title;
47
48			SharedPreferences prefs = context.getSharedPreferences(CHECKUPDATES, Context.MODE_PRIVATE);
49			long lastCheck = prefs.getLong(LASTCHECK, 0);
50
51			long now = System.currentTimeMillis(); //should i use android.os.SystemClock.elapsedRealtime() instead ?
52			Log.i(CHECKUPDATES, "Now=" + now + ", lastCheck=" + lastCheck + ", lastCheck+timespan=" + (lastCheck + TIMESPAN_DAY) );
53
54			if ( now > (lastCheck+TIMESPAN_DAY) ){
55
56			PackageManager pm = context.getPackageManager();
57			try {
58			PackageInfo pi;
59
60			pi = pm.getPackageInfo(context.getPackageName(), 0);
61
62			versionCode = pi.versionCode;
63			versionName = pi.versionName;
64			packageName = pi.packageName;
65			phone_model = android.os.Build.MODEL;
66			androidVersion = android.os.Build.VERSION.RELEASE;
67
68
69			UpdateTask task = new UpdateTask();
70	torben	910	task.execute(url, apkUrl);
71	torben	908
72
73			} catch (NameNotFoundException e) {
74			Log.e(CHECKUPDATES, "NamingException", e);
75			}
76
77			}
78			}
79
80			class UpdateTask extends AsyncTask<String,Void,Void> {
81			boolean result = false;
82			int newestVersion = 0;
83	torben	910
84			String apkUrl;
85	torben	908
86			@Override
87			protected Void doInBackground(String... arg0) {
88			String requestUrl = arg0[0] + "?version=" + encode(versionName) + "&phone=" + encode(phone_model) + "&android=" + encode(androidVersion);
89	torben	910	apkUrl = arg0[1];
90
91	torben	908	try {
92			URL url = new URL(requestUrl);
93			URLConnection conn = url.openConnection();
94			conn.setConnectTimeout(2500);
95
96			String resultStr = readIOStream( conn.getInputStream() );
97			resultStr = resultStr.trim();
98			newestVersion = Integer.parseInt(resultStr);
99
100			result = true;
101
102			} catch (Exception e) {
103			Log.e(CHECKUPDATES, "Check for " + packageName + " failed!", e);
104			}
105
106			return null;
107			}
108
109			private String encode(String data) {
110			try {
111			return java.net.URLEncoder.encode(data, "UTF-8");
112			} catch (Exception e) {
113			return data; //if encoding fails, return original and hope all goes well
114			}
115			}
116
117			private String readIOStream(InputStream in) throws IOException {
118			ByteArrayOutputStream baos = new ByteArrayOutputStream();
119
120			byte buf[] = new byte[1024];
121			int len;
122
123			while ( (len=in.read(buf)) != -1) {
124			baos.write(buf, 0, len);
125			}
126
127			return baos.toString();
128			}
129
130			@Override
131			protected void onPostExecute(Void r) {
132			super.onPostExecute(r);
133
134			Log.i(CHECKUPDATES, "result=" + result + ", newestVersion" + newestVersion + ", versionCode=" + versionCode);
135
136			if (result == true) {
137
138			long now = System.currentTimeMillis();
139			SharedPreferences prefs = context.getSharedPreferences(CHECKUPDATES, Context.MODE_PRIVATE);
140			//when done write
141			Editor edit = prefs.edit();
142			edit.putLong(LASTCHECK, now);
143			edit.commit();
144
145	torben	943	if (newestVersion > versionCode) {
146			String launchUrl = (apkUrl == null) ? "market://search?q=pname:" + packageName : apkUrl;
147			//showUpdateDialog(launchUrl);
148			showNotification(launchUrl);
149			}
150
151			}
152
153			}
154
155			private void showNotification(String launchUrl) {
156			NotificationManager nm = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
157	torben	944	//int icon = android.R.drawable.sym_action_email; //TODO: find a better icon
158			int icon = R.drawable.searchicon;
159	torben	943
160			Notification notification = new Notification(icon, "Update available", System.currentTimeMillis() );
161			notification.flags \|= Notification.FLAG_AUTO_CANCEL ;
162
163			CharSequence contentTitle = title;
164			CharSequence contentText = "New version available.";
165			Intent notificationIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(launchUrl) );
166	torben	944	notificationIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK );
167	torben	943	PendingIntent contentIntent = PendingIntent.getActivity(context, 0, notificationIntent, 0);
168
169			notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);
170
171			nm.notify(1, notification);
172
173			}
174
175			private void showUpdateDialog(final String launchUrl) {
176			AlertDialog.Builder builder = new AlertDialog.Builder(context);
177			builder.setTitle(title);
178			builder.setMessage("This application has an a newer version available. Update now?");
179
180			builder.setPositiveButton("Yes", new OnClickListener() {
181			public void onClick(DialogInterface dialog, int which) {
182
183	torben	908
184	torben	943	Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse(launchUrl) );
185			i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK );
186	torben	908	try {
187	torben	943	context.startActivity(i);
188	torben	908	} catch (Exception e) {
189	torben	943	Log.e(CHECKUPDATES, "Activity launch failed", e);
190	torben	908	}
191	torben	943	context = null;
192	torben	908
193			}
194	torben	943	});
195			builder.setNegativeButton("No", new OnClickListener() {
196			public void onClick(DialogInterface dialog, int which) {
197			context = null;
198			}
199			});
200
201			try {
202			builder.show();
203			} catch (Exception e) {
204			Log.e(CHECKUPDATES, "Builder.show failed", e);
205	torben	908	}
206			}
207
208			}
209
210
211			}