Implement application shortcuts (fix #161)

app/src/main/AndroidManifest.xml

@@ -8,6 +8,7 @@
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
     <uses-permission android:name="android.permission.WAKE_LOCK" />
+    <uses-permission android:name="com.android.launcher.permission.INSTALL_SHORTCUT" />
 
     <application
         android:allowBackup="true"
@@ -30,6 +31,13 @@
 
         <activity android:name=".AboutActivity"/>
 
+        <activity
+            android:name=".ShortcutActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+            </intent-filter>
+        </activity>
+
         <service android:name=".TrackingService" />
 
         <service android:name=".TrackingService$HideNotificationService" />

app/src/main/java/org/traccar/client/MainActivity.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012 - 2015 Anton Tananaev (anton.tananaev@gmail.com)
+ * Copyright 2012 - 2016 Anton Tananaev (anton.tananaev@gmail.com)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,16 +17,11 @@ package org.traccar.client;
 
 import android.Manifest;
 import android.app.AlertDialog;
-import android.app.Dialog;
 import android.content.ComponentName;
-import android.content.Context;
-import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
-import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageManager;
-import android.location.LocationManager;
 import android.os.Build;
 import android.os.Bundle;
 import android.preference.CheckBoxPreference;
@@ -34,9 +29,7 @@ import android.preference.EditTextPreference;
 import android.preference.Preference;
 import android.preference.PreferenceActivity;
 import android.preference.PreferenceManager;
-import android.preference.PreferenceScreen;
 import android.preference.TwoStatePreference;
-import android.telephony.TelephonyManager;
 import android.util.Patterns;
 import android.view.Menu;
 import android.view.MenuItem;
@@ -74,7 +67,7 @@ public class MainActivity extends PreferenceActivity implements OnSharedPreferen
         findPreference(KEY_DEVICE).setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
             @Override
             public boolean onPreferenceChange(Preference preference, Object newValue) {
-                return newValue != null && !((String) newValue).isEmpty();
+                return newValue != null && !newValue.equals("");
             }
         });
         findPreference(KEY_ADDRESS).setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
@@ -137,6 +130,20 @@ public class MainActivity extends PreferenceActivity implements OnSharedPreferen
         }
     }
 
+    private void addShortcuts(boolean start, int name) {
+        Intent shortcutIntent = new Intent(Intent.ACTION_MAIN);
+        shortcutIntent.setComponent(new ComponentName(getPackageName(), ".ShortcutActivity"));
+        shortcutIntent.putExtra(ShortcutActivity.EXTRA_ACTION, start);
+
+        Intent installShortCutIntent = new Intent("com.android.launcher.action.INSTALL_SHORTCUT");
+        installShortCutIntent.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent);
+        installShortCutIntent.putExtra(Intent.EXTRA_SHORTCUT_NAME, getString(name));
+        installShortCutIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE,
+                Intent.ShortcutIconResource.fromContext(this, R.mipmap.ic_launcher));
+
+        sendBroadcast(installShortCutIntent);
+    }
+
     private boolean hasPermission(String permission) {
         if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.LOLLIPOP_MR1) {
             return true;
@@ -188,6 +195,10 @@ public class MainActivity extends PreferenceActivity implements OnSharedPreferen
         if (item.getItemId() == R.id.status) {
             startActivity(new Intent(this, StatusActivity.class));
             return true;
+        } else if (item.getItemId() == R.id.shortcuts) {
+            addShortcuts(true, R.string.shortcut_start);
+            addShortcuts(false, R.string.shortcut_stop);
+            return true;
         } else if (item.getItemId() == R.id.about) {
             startActivity(new Intent(this, AboutActivity.class));
             return true;
@@ -208,7 +219,7 @@ public class MainActivity extends PreferenceActivity implements OnSharedPreferen
 
     private void startTrackingService(boolean checkPermission, boolean permission) {
         if (checkPermission) {
-            Set<String> missingPermissions = new HashSet<String>();
+            Set<String> missingPermissions = new HashSet<>();
             if (!hasPermission(Manifest.permission.ACCESS_FINE_LOCATION)) {
                 missingPermissions.add(Manifest.permission.ACCESS_FINE_LOCATION);
             }

app/src/main/java/org/traccar/client/ShortcutActivity.java

@@ -0,0 +1,56 @@
+/*
+ * Copyright 2016 Anton Tananaev (anton.tananaev@gmail.com)
+ *
+ * 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 org.traccar.client;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.os.Bundle;
+import android.preference.PreferenceManager;
+import android.widget.Toast;
+
+public class ShortcutActivity extends Activity {
+
+    public static final String EXTRA_ACTION = "shortcutAction";
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        checkShortcutAction(getIntent());
+    }
+
+    @Override
+    protected void onNewIntent(Intent intent) {
+        super.onNewIntent(intent);
+        checkShortcutAction(intent);
+    }
+
+    private void checkShortcutAction(Intent intent) {
+        if (intent.hasExtra(EXTRA_ACTION)) {
+            boolean start = intent.getBooleanExtra(EXTRA_ACTION, false);
+            PreferenceManager.getDefaultSharedPreferences(this)
+                    .edit().putBoolean(MainActivity.KEY_STATUS, start).commit();
+            if (start) {
+                startService(new Intent(this, TrackingService.class));
+                Toast.makeText(this, R.string.status_service_create, Toast.LENGTH_SHORT).show();
+            } else {
+                stopService(new Intent(this, TrackingService.class));
+                Toast.makeText(this, R.string.status_service_destroy, Toast.LENGTH_SHORT).show();
+            }
+            finish();
+        }
+    }
+
+}

app/src/main/res/menu/main.xml

@@ -6,9 +6,14 @@
         android:title="@string/menu_status"
         android:showAsAction="always" />
 
+    <item
+        android:id="@+id/shortcuts"
+        android:title="@string/menu_shortcuts"
+        android:showAsAction="never" />
+
     <item
         android:id="@+id/about"
         android:title="@string/menu_about"
-        android:showAsAction="ifRoom" />
+        android:showAsAction="never" />
 
 </menu>

app/src/main/res/values/strings.xml

@@ -3,6 +3,8 @@
 
     <string name="app_name">Traccar Client</string>
     <string name="app_logo">Traccar</string>
+    <string name="shortcut_start">Traccar - Start</string>
+    <string name="shortcut_stop">Traccar - Stop</string>
 
     <string name="settings_id_title">Device identifier</string>
     <string name="settings_address_title">Server address</string>
@@ -28,6 +30,7 @@
 
     <string name="menu_status">Status</string>
     <string name="menu_about">About</string>
+    <string name="menu_shortcuts">Add shortcuts</string>
     <string name="menu_clear">Clear</string>
     
     <string name="about_description">Real time GPS tracker for Android devices. Compatible with Traccar Server and other tracking systems.</string>