JavaScript code for invoking the phone pluginInstructions for utilizing the phone plugin

Trying to implement a phone gap plugin with two parts using cordova 2.0.0 and eclipse.

The java part is as follows:

package org.apache.cordova;

 import java.io.File;
    import java.io.FileOutputStream;
import java.io.IOException;

import org.apache.cordova.api.Plugin;
import org.apache.cordova.api.PluginResult;
import org.json.JSONArray;

import android.graphics.Bitmap;
import android.os.Environment;
import android.view.View;

public class Screenshot extends Plugin {

    @Override
    public PluginResult execute(String action, JSONArray args, String callbackId) {
        // Code for taking a screenshot...
    }

}

The javascript section is as follows:

cordova.define("cordova/plugin/screenshot", function(require, exports, module) {
    var exec = require('cordova/exec');

    /**
     * This class exposes the ability to take a Screenshot to JavaScript
     */
    var Screenshot = function() {};

    /**
     * Save the screenshot to the user's Photo Library
     */
    Screenshot.prototype.saveScreenshot = function() {
        exec(null, null, "Screenshot", "saveScreenshot", []);
    };

    var screenshot = new Screenshot();
    module.exports = screenshot;

});

if (!window.plugins) {
    window.plugins = {};
}
if (!window.plugins.screenshot) {
    window.plugins.screenshot = cordova.require("cordova/plugin/screenshot");
}

Attempting to call this using another JavaScript function on a different page, but encountering issues. Tried hiding anchors of an image on a canvas, then calling the following line:

setTimeout(takeScreenShot,500);

EDIT: Made changes after Simon MacDonald's response. The related JavaScript function is:

function takeScreenShot() {
    window.plugins.screenshot.saveScreenshot();
}

The Java code prints:

System.out.println(folder);
System.out.println("screenshot_" + System.currentTimeMillis() + ".png");

Output:
/mdt/sdcard/Pictures
screenshot_1347893081276.png

EDIT: After restarting the device, the screenshots I took appeared, indicating they were cached instead of being stored in the selected folder. Checked config.xml and android manifest for correct permissions and lines of code. Any assistance appreciated.

Answer №1

Your code lacks a call to the saveScreenshot method. Ensure your takeScreenShot function is properly defined like so:

function takeScreenShot() {
    window.plugins.screenshot.saveScreenshot();
}

After making this adjustment, the screen shot will be saved in "/sdcard/Pictures". This functionality relies on:

  1. Including a plugin line for the screen shot plugin in your config.xml file
  2. Inserting a script tag for screenshot.js on any pages where you intend to use this feature.

Answer №2

Have you attempted using the Absolute Path?

File sdCard = Environment.getExternalStorageDirectory();
File folder = new File (sdcard.getAbsolutePath() + "Pictures");

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