Added initial Android implementation (with plugin.xml and JS interface)
This commit is contained in:
TJ Woon
parent
e9e669b4c2
commit
1b6217e73d
76
android/ZBar.java
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76
android/ZBar.java
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package org.cloudsky.cordovaPlugins;
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import org.apache.cordova.CordovaInterface;
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import org.apache.cordova.CordovaPlugin;
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import org.apache.cordova.CallbackContext;
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import org.apache.cordova.PluginResult;
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import org.json.JSONArray;
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import org.json.JSONException;
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import android.app.Activity;
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import android.content.Intent;
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import android.content.Context;
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import org.cloudsky.cordovaPlugins.ZBarScannerActivity;
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public class ZBar extends CordovaPlugin {
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// Configuration ---------------------------------------------------
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private static int SCAN_CODE = 1;
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// State -----------------------------------------------------------
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private boolean isInProgress = false;
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private CallbackContext scanCallbackContext;
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// Plugin API ------------------------------------------------------
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@Override
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public boolean execute (String action, JSONArray args, CallbackContext callbackContext)
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throws JSONException
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{
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if(action.equals("scan")) {
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if(isInProgress) {
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callbackContext.error("A scan is already in progress!");
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} else {
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isInProgress = true;
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scanCallbackContext = callbackContext;
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Context appCtx = cordova.getActivity().getApplicationContext();
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Intent scanIntent = new Intent(appCtx, ZBarScannerActivity.class);
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cordova.startActivityForResult(this, scanIntent, SCAN_CODE);
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}
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return true;
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} else {
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return false;
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}
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}
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// External results handler ----------------------------------------
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@Override
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public void onActivityResult (int requestCode, int resultCode, Intent result)
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{
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if(requestCode == SCAN_CODE) {
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switch(resultCode) {
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case Activity.RESULT_OK:
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String barcodeValue = result.getStringExtra(ZBarScannerActivity.EXTRA_QRVALUE);
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scanCallbackContext.success(barcodeValue);
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break;
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case Activity.RESULT_CANCELED:
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scanCallbackContext.error("cancelled");
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break;
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case ZBarScannerActivity.RESULT_ERROR:
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scanCallbackContext.error("Scan failed due to an error");
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break;
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default:
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scanCallbackContext.error("Unknown error");
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}
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isInProgress = false;
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scanCallbackContext = null;
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}
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}
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}
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295
android/ZBarScannerActivity.java
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295
android/ZBarScannerActivity.java
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package org.cloudsky.cordovaPlugins;
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import java.io.IOException;
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import android.app.Activity;
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import android.content.Intent;
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import android.content.res.Resources;
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import android.hardware.Camera;
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import android.hardware.Camera.PreviewCallback;
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import android.hardware.Camera.AutoFocusCallback;
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import android.os.Bundle;
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import android.os.Handler;
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import android.view.Gravity;
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import android.view.SurfaceHolder;
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import android.view.SurfaceView;
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import android.view.ViewGroup;
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import android.widget.FrameLayout;
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import android.widget.Toast;
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import net.sourceforge.zbar.ImageScanner;
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import net.sourceforge.zbar.Image;
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import net.sourceforge.zbar.Symbol;
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import net.sourceforge.zbar.SymbolSet;
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import net.sourceforge.zbar.Config;
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public class ZBarScannerActivity extends Activity
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implements SurfaceHolder.Callback {
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// Config ----------------------------------------------------------
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private static int autoFocusInterval = 500; // Interval between AFcallback and next AF attempt.
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// Public Constants ------------------------------------------------
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public static final String EXTRA_QRVALUE = "qrValue";
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public static final int RESULT_ERROR = RESULT_FIRST_USER + 1;
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// State -----------------------------------------------------------
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private Camera camera;
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private Handler autoFocusHandler;
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private SurfaceView scannerSurface;
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private SurfaceHolder holder;
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private ImageScanner scanner;
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private int surfW, surfH;
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// For retrieving R.* resources, from the actual app package
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// (we can't use actual.application.package.R.* in our code as we
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// don't know the applciation package name when writing this plugin).
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private String package_name;
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private Resources resources;
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// Static initialisers (class) -------------------------------------
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static {
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// Needed by ZBar??
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System.loadLibrary("iconv");
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}
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// Activity Lifecycle ----------------------------------------------
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@Override
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public void onCreate (Bundle savedInstanceState)
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{
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super.onCreate(savedInstanceState);
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// Initiate instance variables
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autoFocusHandler = new Handler();
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scanner = new ImageScanner();
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scanner.setConfig(0, Config.X_DENSITY, 3);
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scanner.setConfig(0, Config.Y_DENSITY, 3);
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// Set content view
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setContentView(getResourceId("layout/cszbarscanner"));
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// Create preview SurfaceView
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scannerSurface = new SurfaceView (this) {
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@Override
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public void onSizeChanged (int w, int h, int oldW, int oldH) {
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surfW = w;
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surfH = h;
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matchSurfaceToPreviewRatio();
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}
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};
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scannerSurface.setLayoutParams(new FrameLayout.LayoutParams(
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ViewGroup.LayoutParams.MATCH_PARENT,
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ViewGroup.LayoutParams.MATCH_PARENT,
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Gravity.CENTER
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));
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scannerSurface.getHolder().addCallback(this);
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// Add preview SurfaceView to the screen
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((FrameLayout) findViewById(getResourceId("id/csZbarScannerView"))).addView(scannerSurface);
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findViewById(getResourceId("id/csZbarScannerTitle")).bringToFront();
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findViewById(getResourceId("id/csZbarScannerInstructions")).bringToFront();
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}
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@Override
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public void onResume ()
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{
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super.onResume();
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try {
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camera = Camera.open();
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} catch (Exception e){
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die("Error: Could not open the camera.");
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return;
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}
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tryStartPreview();
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}
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@Override
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public void onPause ()
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{
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releaseCamera();
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super.onPause();
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}
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@Override
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public void onDestroy ()
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{
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scanner.destroy();
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super.onDestroy();
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}
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// Event handlers --------------------------------------------------
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@Override
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public void onBackPressed ()
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{
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setResult(RESULT_CANCELED);
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super.onBackPressed();
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}
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// SurfaceHolder.Callback implementation ---------------------------
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@Override
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public void surfaceCreated (SurfaceHolder hld)
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{
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tryStopPreview();
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holder = hld;
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tryStartPreview();
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}
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@Override
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public void surfaceDestroyed (SurfaceHolder holder)
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{
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// No surface == no preview == no point being in this Activity.
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die("The camera surface was destroyed");
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}
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@Override
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public void surfaceChanged (SurfaceHolder hld, int fmt, int w, int h)
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{
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// Sanity check - holder must have a surface...
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if(hld.getSurface() == null) die("There is no camera surface");
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surfW = w;
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surfH = h;
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matchSurfaceToPreviewRatio();
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tryStopPreview();
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holder = hld;
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tryStartPreview();
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}
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// Continuously auto-focus -----------------------------------------
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private AutoFocusCallback autoFocusCb = new AutoFocusCallback()
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{
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public void onAutoFocus(boolean success, Camera camera) {
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autoFocusHandler.postDelayed(doAutoFocus, autoFocusInterval);
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}
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};
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private Runnable doAutoFocus = new Runnable()
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{
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public void run() {
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if(camera != null) camera.autoFocus(autoFocusCb);
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}
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};
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// Camera callbacks ------------------------------------------------
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// Receives frames from the camera and checks for barcodes.
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private PreviewCallback previewCb = new PreviewCallback()
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{
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public void onPreviewFrame(byte[] data, Camera camera) {
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Camera.Parameters parameters = camera.getParameters();
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Camera.Size size = parameters.getPreviewSize();
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Image barcode = new Image(size.width, size.height, "Y800");
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barcode.setData(data);
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if (scanner.scanImage(barcode) != 0) {
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String qrValue = "";
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SymbolSet syms = scanner.getResults();
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for (Symbol sym : syms) {
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qrValue = sym.getData();
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// Return 1st found QR code value to the calling Activity.
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Intent result = new Intent ();
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result.putExtra(EXTRA_QRVALUE, qrValue);
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setResult(Activity.RESULT_OK, result);
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finish();
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}
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}
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}
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};
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// Misc ------------------------------------------------------------
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// finish() due to error
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private void die (String msg)
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{
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setResult(RESULT_ERROR);
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finish();
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}
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private int getResourceId (String typeAndName)
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{
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if(package_name == null) package_name = getApplication().getPackageName();
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if(resources == null) resources = getApplication().getResources();
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return resources.getIdentifier(typeAndName, null, package_name);
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}
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// Release the camera resources and state.
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private void releaseCamera ()
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{
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if (camera != null) {
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autoFocusHandler.removeCallbacks(doAutoFocus);
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camera.setPreviewCallback(null);
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camera.release();
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camera = null;
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}
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}
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// Match the aspect ratio of the preview SurfaceView with the camera's preview aspect ratio,
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// so that the displayed preview is not stretched/squashed.
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private void matchSurfaceToPreviewRatio () {
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if(camera == null) return;
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if(surfW == 0 || surfH == 0) return;
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// Resize SurfaceView to match camera preview ratio (avoid stretching).
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Camera.Parameters params = camera.getParameters();
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Camera.Size size = params.getPreviewSize();
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float previewRatio = (float) size.height / size.width; // swap h and w as the preview is rotated 90 degrees
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float surfaceRatio = (float) surfW / surfH;
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if(previewRatio > surfaceRatio) {
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scannerSurface.setLayoutParams(new FrameLayout.LayoutParams(
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surfW,
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Math.round((float) surfW / previewRatio),
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Gravity.CENTER
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));
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} else if(previewRatio < surfaceRatio) {
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scannerSurface.setLayoutParams(new FrameLayout.LayoutParams(
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Math.round((float) surfH * previewRatio),
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surfH,
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Gravity.CENTER
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));
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}
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}
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// Stop the camera preview safely.
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private void tryStopPreview () {
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// Stop camera preview before making changes.
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try {
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camera.stopPreview();
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} catch (Exception e){
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// Preview was not running. Ignore the error.
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}
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}
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// Start the camera preview if possible.
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// If start is attempted but fails, exit with error message.
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private void tryStartPreview () {
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if(holder != null) {
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try {
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// 90 degrees rotation for Portrait orientation Activity.
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camera.setDisplayOrientation(90);
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camera.setPreviewDisplay(holder);
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camera.setPreviewCallback(previewCb);
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camera.startPreview();
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camera.autoFocus(autoFocusCb);
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} catch (IOException e) {
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die("Could not start camera preview: " + e.getMessage());
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}
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}
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}
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}
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BIN
android/libs/armeabi-v7a/libiconv.so
Normal file
BIN
android/libs/armeabi-v7a/libiconv.so
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android/libs/armeabi-v7a/libzbarjni.so
Normal file
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android/libs/armeabi-v7a/libzbarjni.so
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android/libs/armeabi/libiconv.so
Normal file
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android/libs/armeabi/libiconv.so
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android/libs/armeabi/libzbarjni.so
Normal file
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android/libs/armeabi/libzbarjni.so
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android/libs/x86/libiconv.so
Normal file
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android/libs/x86/libiconv.so
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android/libs/x86/libzbarjni.so
Normal file
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android/libs/x86/libzbarjni.so
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android/libs/zbar.jar
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android/libs/zbar.jar
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38
android/res/layout/cszbarscanner.xml
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38
android/res/layout/cszbarscanner.xml
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<?xml version="1.0" encoding="utf-8"?>
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<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
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android:id="@+id/csZbarScannerView"
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android:layout_width="match_parent"
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android:layout_height="match_parent"
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android:background="@color/csZbarScannerBackground" >
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<TextView android:id="@+id/csZbarScannerTitle"
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android:layout_width="match_parent"
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android:layout_height="wrap_content"
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android:layout_gravity="top|center_horizontal"
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android:paddingTop="15dp"
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android:paddingBottom="5dp"
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android:paddingLeft="5dp"
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android:paddingRight="5dp"
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android:gravity="center"
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android:text="@string/csZbarScannerTitle"
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android:textColor="@color/csZbarScannerTextColor"
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android:background="@color/csZbarScannerTextBackground"
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android:fontFamily="sans-serif-light"
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android:textSize="20pt" />
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<TextView android:id="@+id/csZbarScannerInstructions"
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android:layout_gravity="bottom|center_horizontal"
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android:layout_width="match_parent"
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android:layout_height="wrap_content"
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android:paddingTop="5dp"
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android:paddingBottom="15dp"
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android:paddingLeft="5dp"
|
||||||
|
android:paddingRight="5dp"
|
||||||
|
android:gravity="center"
|
||||||
|
android:textSize="12pt"
|
||||||
|
android:textColor="@color/csZbarScannerTextColor"
|
||||||
|
android:background="@color/csZbarScannerTextBackground"
|
||||||
|
android:fontFamily="sans-serif-light"
|
||||||
|
android:text="@string/csZbarScannerInstructions" />
|
||||||
|
|
||||||
|
</FrameLayout>
|
||||||
58
plugin.xml
Normal file
58
plugin.xml
Normal file
@ -0,0 +1,58 @@
|
|||||||
|
<?xml version="1.0" encoding="UTF-8"?>
|
||||||
|
<plugin xmlns="http://apache.org/cordova/ns/plugins/1.0"
|
||||||
|
id="org.cloudsky.cordovaplugins.zbar" version="0.1.0">
|
||||||
|
|
||||||
|
<engines>
|
||||||
|
<engine name="cordova" version=">=3.0.0" />
|
||||||
|
</engines>
|
||||||
|
|
||||||
|
<name>ZBar barcode scanner</name>
|
||||||
|
<author>TJ Woon (tj@cloudsky.org)</author>
|
||||||
|
<description>Plugin to integrate with the ZBar barcode scanning library.</description>
|
||||||
|
<license>Apache 2.0</license>
|
||||||
|
<keywords>cszbar,zbar,barcode,qr,qr code,scanner</keywords>
|
||||||
|
|
||||||
|
<js-module src="www/zbar.js" name="zBar">
|
||||||
|
<clobbers target="cloudSky.zBar" />
|
||||||
|
</js-module>
|
||||||
|
|
||||||
|
<platform name="android">
|
||||||
|
<config-file target="res/xml/config.xml" parent="/*">
|
||||||
|
<feature name="CsZBar">
|
||||||
|
<param name="android-package" value="org.cloudsky.cordovaPlugins.ZBar"/>
|
||||||
|
</feature>
|
||||||
|
</config-file>
|
||||||
|
<config-file target="AndroidManifest.xml" parent="application">
|
||||||
|
<activity
|
||||||
|
android:name="org.cloudsky.cordovaPlugins.ZBarScannerActivity"
|
||||||
|
android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen"
|
||||||
|
android:screenOrientation="portrait" >
|
||||||
|
</activity>
|
||||||
|
</config-file>
|
||||||
|
<config-file target="AndroidManifest.xml" parent="/*">
|
||||||
|
<uses-feature android:name="android.hardware.camera" />
|
||||||
|
<uses-feature android:name="android.hardware.camera.autofocus" />
|
||||||
|
<uses-feature android:name="android.hardware.camera.flash" android:required="false" />
|
||||||
|
<uses-feature android:name="android.hardware.camera.front" android:required="false" />
|
||||||
|
<uses-permission android:name="android.permission.CAMERA" />
|
||||||
|
</config-file>
|
||||||
|
<config-file target="res/values/strings.xml" parent="/*">
|
||||||
|
<string name="csZbarScannerTitle">Scan QR Code</string>
|
||||||
|
<string name="csZbarScannerInstructions">Please point your camera at the QR code.</string>
|
||||||
|
<color name="csZbarScannerTextColor">#ffffff</color>
|
||||||
|
<color name="csZbarScannerTextBackground">#88000000</color>
|
||||||
|
<color name="csZbarScannerBackground">#000000</color>
|
||||||
|
</config-file>
|
||||||
|
<resource-file src="android/res/layout/cszbarscanner.xml" target="res/layout/cszbarscanner.xml" />
|
||||||
|
<source-file src="android/ZBar.java" target-dir="src/org/cloudsky/cordovaPlugins" />
|
||||||
|
<source-file src="android/ZBarScannerActivity.java" target-dir="src/org/cloudsky/cordovaPlugins" />
|
||||||
|
<source-file src="android/libs/ZBar.jar" target-dir="libs" />
|
||||||
|
<source-file src="android/libs/armeabi/libiconv.so" target-dir="libs/armeabi" />
|
||||||
|
<source-file src="android/libs/armeabi/libzbarjni.so" target-dir="libs/armeabi" />
|
||||||
|
<source-file src="android/libs/armeabi-v7a/libiconv.so" target-dir="libs/armeabi-v7a" />
|
||||||
|
<source-file src="android/libs/armeabi-v7a/libzbarjni.so" target-dir="libs/armeabi-v7a" />
|
||||||
|
<source-file src="android/libs/x86/libiconv.so" target-dir="libs/x86" />
|
||||||
|
<source-file src="android/libs/x86/libzbarjni.so" target-dir="libs/x86" />
|
||||||
|
</platform>
|
||||||
|
|
||||||
|
</plugin>
|
||||||
16
www/zBar.js
Normal file
16
www/zBar.js
Normal file
@ -0,0 +1,16 @@
|
|||||||
|
var argscheck = require('cordova/argscheck'),
|
||||||
|
exec = require('cordova/exec');
|
||||||
|
|
||||||
|
function ZBar () {};
|
||||||
|
|
||||||
|
ZBar.prototype = {
|
||||||
|
|
||||||
|
scan: function (params, success, failure)
|
||||||
|
{
|
||||||
|
argscheck.checkArgs('*fF', 'CsZBar.scan', arguments);
|
||||||
|
exec(success, failure, 'CsZBar', 'scan', [params]);
|
||||||
|
},
|
||||||
|
|
||||||
|
};
|
||||||
|
|
||||||
|
module.exports = new ZBar;
|
||||||
Loading…
Reference in New Issue
Block a user