Java tutorial
/* * Copyright (c) 2013 Moodstocks SAS * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ package com.moodstocks.phonegap.plugin; import com.virtualama.application.R; import org.apache.cordova.PluginResult; import org.json.JSONException; import org.json.JSONObject; import android.annotation.TargetApi; import android.app.Activity; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.os.Build; import android.os.Bundle; import android.view.SurfaceView; import android.webkit.WebView; import android.widget.RelativeLayout; import com.moodstocks.android.MoodstocksError; import com.moodstocks.android.Result; import com.moodstocks.android.ScannerSession; public class MoodstocksScanActivity extends Activity implements ScannerSession.Listener { public static final String TAG = "MoodstocksScanActivity"; public static final String PLUGINACTION = "com.moodstocks.phonegap.plugin.action"; public static final String PAUSE = "pause"; public static final String RESUME = "resume"; public static final String DISMISS = "dismiss"; public static final String FORMAT = "format"; public static final String VALUE = "value"; private int ScanOptions = Result.Type.IMAGE; private ScannerSession session; private RelativeLayout webContainer; private boolean backPressActivated = true; private ActionReceiver MoodstocksActionReceiver; private class ActionReceiver extends BroadcastReceiver { @Override public void onReceive(Context ctx, Intent intent) { String receivedAction = intent.getExtras().getString(PLUGINACTION); if (receivedAction.equals(PAUSE)) { session.pause(); backPressActivated = false; } if (receivedAction.equals(RESUME)) { session.resume(); backPressActivated = true; } if (receivedAction.equals(DISMISS)) { backPressActivated = true; onBackPressed(); } } } @TargetApi(Build.VERSION_CODES.HONEYCOMB) @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.scan); // Get the camera preview surface SurfaceView preview = (SurfaceView) findViewById(R.id.preview); // Insert CordovaWebview as the overlay into the web container webContainer = (RelativeLayout) findViewById(R.id.webContainer); webContainer.addView(MoodstocksPlugin.getOverlay(), 0); // bug of android 3.0 - 4.0.3: issue with transparent webview if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.HONEYCOMB && android.os.Build.VERSION.SDK_INT <= android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH_MR1) { webContainer.setLayerType(WebView.LAYER_TYPE_SOFTWARE, null); } // Create a scanner session try { session = new ScannerSession(this, this, preview); } catch (MoodstocksError e) { e.log(); } // Get scan options ScanOptions = getIntent().getExtras().getInt("scanOptions"); session.setOptions(ScanOptions); session.useDeviceOrientation = getIntent().getExtras().getBoolean("useDeviceOrientation"); session.noPartialMatching = getIntent().getExtras().getBoolean("noPartialMatching"); session.smallTargetSupport = getIntent().getExtras().getBoolean("smallTargetSupport"); } @Override protected void onResume() { super.onResume(); // start scanning! session.resume(); // Setup the an action receiver for receiving broadcast intent if (MoodstocksActionReceiver == null) MoodstocksActionReceiver = new ActionReceiver(); // Filter on the key word pluginAction IntentFilter intentFilter = new IntentFilter(PLUGINACTION); registerReceiver(MoodstocksActionReceiver, intentFilter); // Update the flag in MoodstocksWebView MoodstocksPlugin.getOverlay().onStatusUpdate(true); } @Override protected void onPause() { super.onPause(); session.pause(); // Unregister the receiver when the scanner is on pause if (MoodstocksActionReceiver != null) unregisterReceiver(MoodstocksActionReceiver); // Update the flag in MoodstocksWebView MoodstocksPlugin.getOverlay().onStatusUpdate(false); } @Override protected void onDestroy() { super.onDestroy(); session.close(); } @Override public void onBackPressed() { if (backPressActivated) { session.pause(); JSONObject obj = new JSONObject(); try { obj.put(FORMAT, null); obj.put(VALUE, null); } catch (JSONException e) { e.printStackTrace(); } PluginResult r = new PluginResult(PluginResult.Status.OK, obj); r.setKeepCallback(false); MoodstocksPlugin.getScanCallback().sendPluginResult(r); // Remove the web view from web container when quitting webContainer.removeView(MoodstocksPlugin.getOverlay()); super.onBackPressed(); } } // ------------------------- // ScannerSession.Listener // ------------------------- @Override public void onScanComplete(Result result) { if (result != null) { session.pause(); // result found, send to overlay JSONObject obj = new JSONObject(); try { obj.put(FORMAT, result.getType()); obj.put(VALUE, result.getValue()); } catch (JSONException e) { e.printStackTrace(); } PluginResult r = new PluginResult(PluginResult.Status.OK, obj); r.setKeepCallback(true); MoodstocksPlugin.getScanCallback().sendPluginResult(r); } } @Override public void onScanFailed(MoodstocksError error) { // in this sample code, we just log the errors. error.log(); } @Override public void onApiSearchStart() { // void implementation } @Override public void onApiSearchComplete(Result result) { // void implementation } @Override public void onApiSearchFailed(MoodstocksError e) { // void implementation } }