MOTOROLA MC40 Intent获取扫描头信息

本是古典何须时尚 2022-05-13 00:12 180阅读 0赞

[https://launchpad.motorolasolutions.com/documents/dwdemo\_sample.html][https_launchpad.motorolasolutions.com_documents_dwdemo_sample.html]

# DWDEMO SAMPLE #

Table of Contents

[NAME][]

[SYNOPSIS][]

[APPLICATION LAYOUT][]

[INTENT STRINGS][]

[HANDLING INTENTS][]

[TOGGLING THE SCAN TRIGGER][]

[PUTTING ALL THE CODE TOGETHER][]

[DEFINING INTENT FILTERS][]

[CONFIGURING DATAWEDGE][]

[SUMMARY][]

[DOWNLOAD][]

[LINKS][]

[FEEDBACK][]

[COPYRIGHT][]

## NAME ##

DWDemo Sample - How to capture DataWedge output in your Android application

## SYNOPSIS ##

DataWedge on Android has the ability to output captured data via [ Intents][Intents].

This article describes how to receive and use intents from DataWedge in your Android application.

Knowledge of Android programming and familiarity with the Android intent mechanism are assumed. Also assumed is some familarity with DataWedge and that you have read the DataWedge section in the Integrator Guide for your device.

## APPLICATION LAYOUT ##

For this article we created an Android application with a blank activity using Eclipse, to which we added the following layout.

<?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:orientation="vertical" >
    
        <LinearLayout
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal" >
    
            <ImageView
                android:id="@+id/logo"
                style="@style/logo"
                android:contentDescription="@string/title" />
    
            <LinearLayout
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:orientation="vertical" >
    
                <TextView style="@style/title" />
    
                <TextView style="@style/copyright" />
    
                </LinearLayout>
        </LinearLayout>
    
        <View style="@style/hr" />
    
        <TextView style="@style/intro" />
    
        <EditText
            android:id="@+id/editbox"
            style="@style/editbox"
            android:inputType="textMultiLine"
            />
    
    </LinearLayout>

The things to note in the above layout are the [ ImageView][ImageView] and the [ EditText][EditText] widgets. The ImageView widget will effectively act as a button which can be used to toggle the scanner instead of pressing the trigger button on the device. The EditText widget will be used to display the data that we receive in the intent.

## INTENT STRINGS ##

The intent we will received from DataWedge will contain a bundle of data which we will be retrieving using the Intent.getStringtExtra() and Intent.getSerializableExtra() methods. The following is a list of the data item names that the bundle could contain.

String SOURCE\_TAG = "com.motorolasolutions.emdk.datawedge.source";

String contains the source of the data i.e. scanner or MSR

String DATA\_STRING\_TAG = "com.motorolasolutions.emdk.datawedge.data\_string";

String contains the output data as a String. In the case of concatenated bar codes, the decode data is concatenated and sent out as a single string. In the case of MSR output, the data from the MSR tracks is concatenated and sent out as a single string.

String LABEL\_TYPE\_TAG = "com.motorolasolutions.emdk.datawedge.label\_type";

String contains the label type of the bar code.

String DECODE\_DATA\_TAG = "com.motorolasolutions.emdk.datawedge.decode\_data";

Decode data returned as a list of byte arrays. In most cases there will be one byte array per decode. For barcode symbologies that support concatenation e.g. Codabar, Code128, MicroPDF, etc., the decoded data is stored in multiple byte arrays (one byte array per bar code). Clients can get data in each byte array by passing an index.

Let’s list the MSR intent names (in case we want to use these in the future).

The MSR related data added to the intent’s bundle can be retrieved using the Intent.getStringtExtra() and Intent.getSerializableExtra() calls, using the following String tags…

String MSR\_DATA\_TAG = "com.motorolasolutions.emdk.datawedge.msr\_data";

The data from the MSR tracks is concatenated and sent out as a byte array.

String MSR\_TRACK1\_TAG = "com.motorolasolutions.emdk.datawedge.msr\_track1";

MSR track 1 data is returned as a byte array.

String MSR\_TRACK2\_TAG = "com.motorolasolutions.emdk.datawedge.msr\_track2";

MSR track 2 data is returned as a byte array.

String MSR\_TRACK3\_TAG = "com.motorolasolutions.emdk.datawedge.msr\_track3";

MSR track 3 data is returned as a byte array.

String MSR\_TRACK1\_STATUS\_TAG = "com.motorolasolutions.emdk.datawedge.msr\_track1\_status";

MSR track 1 decode status as an Integer where 0 indicates a successful decode.

String MSR\_TRACK2\_STATUS\_TAG = "com.motorolasolutions.emdk.datawedge.msr\_track2\_status";

MSR track 2 decode status as an Integer where 0 indicates a successful decode.

String MSR\_TRACK3\_STATUS\_TAG = "com.motorolasolutions.emdk.datawedge.msr\_track3\_status";

MSR track 3 decode status as an Integer where 0 indicates a successful decode.

String MSR\_TRACK1\_ENCRYPTED\_TAG = "com.motorolasolutions.emdk.datawedge.msr\_track1\_encrypted";

MSR track 1 encrypted data is returned as a byte array.

String MSR\_TRACK2\_ENCRYPTED\_TAG = "com.motorolasolutions.emdk.datawedge.msr\_track2\_encrypted";

MSR track 2 encrypted data is returned as a byte array.

String MSR\_TRACK3\_ENCRYPTED\_TAG = "com.motorolasolutions.emdk.datawedge.msr\_track3\_encrypted";

MSR track 3 encrypted data is returned as a byte array.

String MSR\_TRACK1\_HASHED\_TAG = "com.motorolasolutions.emdk.datawedge.msr\_track1\_hashed";

MSR track 1 hashed data is returned as a byte array.

String MSR\_TRACK2\_HASHED\_TAG = "com.motorolasolutions.emdk.datawedge.msr\_track2\_hashed";

MSR track 2 hashed data is returned as a byte array.

String MSR\_TRACK3\_HASHED\_TAG = "com.motorolasolutions.emdk.datawedge.msr\_track3\_hashed";

MSR track 3 hashed data is returned as a byte array.

Here are the API intent names for the soft scan trigger…

String ACTION\_SOFTSCANTRIGGER = "com.motorolasolutions.emdk.datawedge.api.ACTION\_SOFTSCANTRIGGER";

This is the intent action for the soft scan trigger.

String EXTRA\_PARAM = "com.motorolasolutions.emdk.datawedge.api.EXTRA\_PARAMETER";

Parameter passed in the intent to specify the action the soft scan trigger should perform. The following actions are recognized…

String DWAPI\_START\_SCANNING = "START\_SCANNING";

Start scanning.

String DWAPI\_STOP\_SCANNING = "STOP\_SCANNING";

Stop scanning.

String DWAPI\_TOGGLE\_SCANNING = "TOGGLE\_SCANNING";

Toggle scanning.

In the code that follows we will just be using the SOURCE\_TAG, DATA\_STRING\_TAG and LABEL\_TYPE\_TAG intent data to display the intent data in the [ EditText][EditText] widget.

## HANDLING INTENTS ##

Incoming intents can be handled by overriding the onNewIntent method.

@Override
    public void onNewIntent(Intent i) {
             
        handleDecodeData(i);
    }

Our handleDecodeData() method will responsible for getting the data from the intent, formatting it and adding it to the end of the edit box; something like this…

private void handleDecodeData(Intent i) {
             
        // check the intent action is for us
        if ( i.getAction().contentEquals(com.motorolasolutions.emdk.sample.dwdemosample.RECVR) ) {
             
            // define a string that will hold our output
            String out = "";
            // get the source of the data
            String source = i.getStringExtra(SOURCE_TAG);
            // save it to use later
            if (source == null) source = "scanner";
            // get the data from the intent
            String data = i.getStringExtra(DATA_STRING_TAG);
            // let's define a variable for the data length
            Integer data_len = 0;
            // and set it to the length of the data
            if (data != null) data_len = data.length();
    
            // check if the data has come from the barcode scanner
            if (source.equalsIgnoreCase("scanner")) {
             
                // check if there is anything in the data
                if (data != null && data.length() > 0) {
             
                    // we have some data, so let's get it's symbology
                    String sLabelType = i.getStringExtra(LABEL_TYPE_TAG);
                    // check if the string is empty
                    if (sLabelType != null && sLabelType.length() > 0) {
             
                        // format of the label type string is LABEL-TYPE-SYMBOLOGY
                        // so let's skip the LABEL-TYPE- portion to get just the symbology
                        sLabelType = sLabelType.substring(11);
                    }
                    else {
             
                        // the string was empty so let's set it to "Unknown"
                        sLabelType = "Unknown";
                    }
                    // let's construct the beginning of our output string
                    out = "Source: Scanner, " + "Symbology: " + sLabelType + ", Length: " + data_len.toString() + ", Data: ...\r\n";
                }
            }
    
            // check if the data has come from the MSR
            if (source.equalsIgnoreCase("msr")) {
             
                // construct the beginning of our output string
                out = "Source: MSR, Length: " + data_len.toString() + ", Data: ...\r\n";
            }
    
            // let's get our edit box view
            EditText et = (EditText)findViewById(R.id.editbox);
            // and get it's text into an editable string
            Editable txt = et.getText();
            // now because we want format our output
            // we need to put the edit box text into a spannable string builder
            SpannableStringBuilder stringbuilder = new SpannableStringBuilder(txt);
            // add the output string we constructed earlier
            stringbuilder.append(out);
            // now let's highlight our output string in bold type
            stringbuilder.setSpan(new StyleSpan(Typeface.BOLD), txt.length(), stringbuilder.length(), SpannableString.SPAN_EXCLUSIVE_EXCLUSIVE);
            // then add the barcode or msr data, plus a new line, and add it to the string builder
            stringbuilder.append(data + "\r\n");
            // now let's update the text in the edit box
            et.setText(stringbuilder);
            // we want the text cursor to be at the end of the edit box
            // so let's get the edit box text again
            txt = et.getText();
            // and set the cursor position at the end of the text
            et.setSelection(txt.length());
            // and we are done!
        }
    
    }

## TOGGLING THE SCAN TRIGGER ##

Our activity layout has an [ ImageView][ImageView] which we will use as a button to toggle the scan trigger. This is done by sending an intent to DataWedge. The following code toggles the scan trigger each time the image is tapped.

ImageView img = (ImageView) findViewById(R.id.dwdemo_logo);
    img.setOnClickListener(new OnClickListener() {
             
        @Override
        public void onClick(View v) {
             
            Intent i = new Intent();
            i.setAction(ACTION_SOFTSCANTRIGGER);
            i.putExtra(EXTRA_PARAM, DWAPI_TOGGLE_SCANNING);
            DWDemoActivity.this.sendBroadcast(i);
            Toast.makeText(v.getContext(), "Soft scan trigger toggled.", Toast.LENGTH_SHORT).show();
        }
    });

## PUTTING ALL THE CODE TOGETHER ##

Let’s put all that code together so that we can see what our final activity class should look like.

package com.motorolasolutions.emdk.sample.dwdemosample;
    
    import android.os.Bundle;
    import android.app.Activity;
    import android.content.Intent;
    import android.graphics.Typeface;
    import android.view.View;
    import android.view.View.OnClickListener;
    import android.widget.EditText;
    import android.widget.ImageView;
    import android.widget.Toast;
    import android.text.Editable;
    import android.text.SpannableString;
    import android.text.SpannableStringBuilder;
    import android.text.style.StyleSpan;
    
    public class MainActivity extends Activity {
             
        // Tag used for logging errors
        private static final String TAG = MainActivity.class.getSimpleName();
    
        // Let's define some intent strings
        // This intent string contains the source of the data as a string
        private static final String SOURCE_TAG = "com.motorolasolutions.emdk.datawedge.source";
        // This intent string contains the barcode symbology as a string
        private static final String LABEL_TYPE_TAG = "com.motorolasolutions.emdk.datawedge.label_type";
        // This intent string contains the barcode data as a byte array list
        private static final String DECODE_DATA_TAG = "com.motorolasolutions.emdk.datawedge.decode_data";
    
        // This intent string contains the captured data as a string
        // (in the case of MSR this data string contains a concatenation of the track data)
        private static final String DATA_STRING_TAG = "com.motorolasolutions.emdk.datawedge.data_string";
    
        // Let's define the MSR intent strings (in case we want to use these in the future)
        private static final String MSR_DATA_TAG = "com.motorolasolutions.emdk.datawedge.msr_data";
        private static final String MSR_TRACK1_TAG = "com.motorolasolutions.emdk.datawedge.msr_track1";
        private static final String MSR_TRACK2_TAG = "com.motorolasolutions.emdk.datawedge.msr_track2";
        private static final String MSR_TRACK3_TAG = "com.motorolasolutions.emdk.datawedge.msr_track3";
        private static final String MSR_TRACK1_STATUS_TAG = "com.motorolasolutions.emdk.datawedge.msr_track1_status";
        private static final String MSR_TRACK2_STATUS_TAG = "com.motorolasolutions.emdk.datawedge.msr_track2_status";
        private static final String MSR_TRACK3_STATUS_TAG = "com.motorolasolutions.emdk.datawedge.msr_track3_status";
        private static final String MSR_TRACK1_ENCRYPTED_TAG = "com.motorolasolutions.emdk.datawedge.msr_track1_encrypted";
        private static final String MSR_TRACK2_ENCRYPTED_TAG = "com.motorolasolutions.emdk.datawedge.msr_track2_encrypted";
        private static final String MSR_TRACK3_ENCRYPTED_TAG = "com.motorolasolutions.emdk.datawedge.msr_track3_encrypted";
        private static final String MSR_TRACK1_HASHED_TAG = "com.motorolasolutions.emdk.datawedge.msr_track1_hashed";
        private static final String MSR_TRACK2_HASHED_TAG = "com.motorolasolutions.emdk.datawedge.msr_track2_hashed";
        private static final String MSR_TRACK3_HASHED_TAG = "com.motorolasolutions.emdk.datawedge.msr_track3_hashed";
    
        // Let's define the API intent strings for the soft scan trigger
        private static final String ACTION_SOFTSCANTRIGGER = "com.motorolasolutions.emdk.datawedge.api.ACTION_SOFTSCANTRIGGER";
        private static final String EXTRA_PARAM = "com.motorolasolutions.emdk.datawedge.api.EXTRA_PARAMETER";
        private static final String DWAPI_START_SCANNING = "START_SCANNING";
        private static final String DWAPI_STOP_SCANNING = "STOP_SCANNING";
        private static final String DWAPI_TOGGLE_SCANNING = "TOGGLE_SCANNING";
    
        private static String ourIntentAction = "com.motorolasolutions.emdk.sample.dwdemosample.RECVR";
    
    
        @Override
        public void onCreate(Bundle savedInstanceState) {
             
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
            // Let's set the cursor at the end of any text in the editable text field
            EditText et = (EditText)findViewById(R.id.editbox);
            Editable txt = et.getText();
            et.setSelection(txt.length());
    
            // Since we will be using the image as a soft scan trigger toggle button
            // let's handle the image on onClick event
            ImageView img = (ImageView) findViewById(R.id.logo);
            img.setOnClickListener(new OnClickListener() {
             
                @Override
                public void onClick(View v) {
             
                    // the image has been tapped so shoot off the intent to DataWedge
                    // to toggle the soft scan trigger
                    // Create a new intent
                    Intent i = new Intent();
                    // set the intent action using soft scan trigger action string declared earlier
                    i.setAction(ACTION_SOFTSCANTRIGGER);
                    // add a string parameter to tell DW that we want to toggle the soft scan trigger
                    i.putExtra(EXTRA_PARAM, DWAPI_TOGGLE_SCANNING);
                    // now broadcast the intent
                    MainActivity.this.sendBroadcast(i);
                    // provide some feedback to the user that we did something
                    Toast.makeText(v.getContext(), "Soft scan trigger toggled.", Toast.LENGTH_SHORT).show();
                }
            });
    
            // in case we have been launched by the DataWedge intent plug-in
            // using the StartActivity method let's handle the intent
            Intent i = getIntent();
            handleDecodeData(i);
        }
    
    
        // We need to handle any incoming intents, so let override the onNewIntent method
        @Override
        public void onNewIntent(Intent i) {
             
            handleDecodeData(i);
        }
    
        // This method is responsible for getting the data from the intent
        // formatting it and adding it to the end of the edit box
        private void handleDecodeData(Intent i) {
             
            // check the intent action is for us
            if ( i.getAction().contentEquals(ourIntentAction) ) {
             
                // define a string that will hold our output
                String out = "";
                // get the source of the data
                String source = i.getStringExtra(SOURCE_TAG);
                // save it to use later
                if (source == null) source = "scanner";
                // get the data from the intent
                String data = i.getStringExtra(DATA_STRING_TAG);
                // let's define a variable for the data length
                Integer data_len = 0;
                // and set it to the length of the data
                if (data != null) data_len = data.length();
    
                // check if the data has come from the barcode scanner
                if (source.equalsIgnoreCase("scanner")) {
             
                    // check if there is anything in the data
                    if (data != null && data.length() > 0) {
             
                        // we have some data, so let's get it's symbology
                        String sLabelType = i.getStringExtra(LABEL_TYPE_TAG);
                        // check if the string is empty
                        if (sLabelType != null && sLabelType.length() > 0) {
             
                            // format of the label type string is LABEL-TYPE-SYMBOLOGY
                            // so let's skip the LABEL-TYPE- portion to get just the symbology
                            sLabelType = sLabelType.substring(11);
                        }
                        else {
             
                            // the string was empty so let's set it to "Unknown"
                            sLabelType = "Unknown";
                        }
                        // let's construct the beginning of our output string
                        out = "Source: Scanner, " + "Symbology: " + sLabelType + ", Length: " + data_len.toString() + ", Data: ...\r\n";
                    }
                }
    
                // check if the data has come from the MSR
                if (source.equalsIgnoreCase("msr")) {
             
                    // construct the beginning of our output string
                    out = "Source: MSR, Length: " + data_len.toString() + ", Data: ...\r\n";
                }
    
                // let's get our edit box view
                EditText et = (EditText)findViewById(R.id.editbox);
                // and get it's text into an editable string
                Editable txt = et.getText();
                // now because we want format our output
                // we need to put the edit box text into a spannable string builder
                SpannableStringBuilder stringbuilder = new SpannableStringBuilder(txt);
                // add the output string we constructed earlier
                stringbuilder.append(out);
                // now let's highlight our output string in bold type
                stringbuilder.setSpan(new StyleSpan(Typeface.BOLD), txt.length(), stringbuilder.length(), SpannableString.SPAN_EXCLUSIVE_EXCLUSIVE);
                // then add the barcode or msr data, plus a new line, and add it to the string builder
                stringbuilder.append(data + "\r\n");
                // now let's update the text in the edit box
                et.setText(stringbuilder);
                // we want the text cursor to be at the end of the edit box
                // so let's get the edit box text again
                txt = et.getText();
                // and set the cursor position at the end of the text
                et.setSelection(txt.length());
                // and we are done!
            }
    
        }
    
    }

## DEFINING INTENT FILTERS ##

Having dealt with the coding of our activity, we now need to inform the system which implicit intents our application can handle. For that we need to define an [ intent-filter][intent-filter] as follows.

<intent-filter>
        <action android:name="com.motorolasolutions.emdk.sample.dwdemosample.RECVR"/>
        <category android:name="android.intent.category.DEFAULT"/>
    </intent-filter>

We will be using the com.motorolasolutions.emdk.sample.dwdemosample.RECVR action and the android.intent.category.DEFAULT category we have just defined above later on when we come to configure our DataWedge profile.

In this acticle DataWedge is configured to use the startActivity() method to send the intent. The startActivity() method causes a new activity to be launched. However since we do not want another instance of our activity launched each time we receive an intent, we need to specify the launch mode of our activity as single task.

android:launchMode="singleTask"

After adding the above, our AndroidManifest.xml should look something like this…

## CONFIGURING DATAWEDGE ##

Now we need to configure DataWedge to send the desired intent to our application.

The following steps will help you get started…

1.  Launch DataWedge
2.  Create a new profile and give it a name such as "dwdemosample"
3.  Edit the profile
4.  Go into Associated apps, tap the menu button, and add a new app/activity
5.  For the application select com.motorolasolutions.emdk.sample.dwdemosample
6.  For the activity select com.motorolasolutions.emdk.sample.dwdemosample.MainActivty
7.  Go back and disable the keystroke output plug-in
8.  Enable the intent output plug-in
9.  For the intent action enter com.motorolasolutions.emdk.sample.dwdemosample.RECVR
10. For the intent category enter android.intent.category.DEFAULT

## SUMMARY ##

That’s it. You should now be able to scan a barcode and see it appear in the sample application.

In this arcticle, we covered…

*  DataWedge intent strings
 *  Handling intents from DataWedge
    
     *  Receiving barcode/MSR data
 *  Sending intents to DataWedge
    
     *  Toggling of the soft scan trigger
 *  Defining intent filters
 *  Configuring DataWedge to send intents to our application

## DOWNLOAD ##

The complete sample code used for this article can be found attached to related blog post on [ Launchpad][Launchpad].

## LINKS ##

[Motorola Solutions Support Central][] \- Integrator Guides, Product Manuals, Software Downloads and Support

[LaunchPad - Motorola Solutions Developer Center][]

[Intent | Android Developers][Intent _ Android Developers]

[Intents and Intent Filters | Android Developers][intent-filter]

[Android Intents - Tutorial][]

## FEEDBACK ##

Please report any bugs, feedback and suggestions to [ DataWedge Android DWDemo Sample Feedback][DataWedge Android DWDemo Sample Feedback]. Thank you!

## COPYRIGHT ##

Version 0.3  
Last updated 2013-05-02 16:03:35 BST

[https_launchpad.motorolasolutions.com_documents_dwdemo_sample.html]: https://launchpad.motorolasolutions.com/documents/dwdemo_sample.html
[NAME]: https://launchpad.motorolasolutions.com/documents/dwdemo_sample.html#_name
[SYNOPSIS]: https://launchpad.motorolasolutions.com/documents/dwdemo_sample.html#_synopsis
[APPLICATION LAYOUT]: https://launchpad.motorolasolutions.com/documents/dwdemo_sample.html#_application_layout
[INTENT STRINGS]: https://launchpad.motorolasolutions.com/documents/dwdemo_sample.html#_intent_strings
[HANDLING INTENTS]: https://launchpad.motorolasolutions.com/documents/dwdemo_sample.html#_handling_intents
[TOGGLING THE SCAN TRIGGER]: https://launchpad.motorolasolutions.com/documents/dwdemo_sample.html#_toggling_the_scan_trigger
[PUTTING ALL THE CODE TOGETHER]: https://launchpad.motorolasolutions.com/documents/dwdemo_sample.html#_putting_all_the_code_together
[DEFINING INTENT FILTERS]: https://launchpad.motorolasolutions.com/documents/dwdemo_sample.html#_defining_intent_filters
[CONFIGURING DATAWEDGE]: https://launchpad.motorolasolutions.com/documents/dwdemo_sample.html#_configuring_datawedge
[SUMMARY]: https://launchpad.motorolasolutions.com/documents/dwdemo_sample.html#_summary
[DOWNLOAD]: https://launchpad.motorolasolutions.com/documents/dwdemo_sample.html#_download
[LINKS]: https://launchpad.motorolasolutions.com/documents/dwdemo_sample.html#_links
[FEEDBACK]: https://launchpad.motorolasolutions.com/documents/dwdemo_sample.html#_feedback
[COPYRIGHT]: https://launchpad.motorolasolutions.com/documents/dwdemo_sample.html#_copyright
[Intents]: http://developer.android.com/reference/android/content/Intent.html
[ImageView]: http://developer.android.com/reference/android/widget/ImageView.html
[EditText]: http://developer.android.com/reference/android/widget/EditText.html
[intent-filter]: http://developer.android.com/guide/components/intents-filters.html
[Launchpad]: https://developer.motorolasolutions.com/community/technologies/mobile_computing/datawedge
[Motorola Solutions Support Central]: http://support.symbol.com/
[LaunchPad - Motorola Solutions Developer Center]: https://developer.motorolasolutions.com/welcome
[Intent _ Android Developers]: http://developer.android.com/reference/android/content/intent.html
[Android Intents - Tutorial]: http://www.vogella.com/acticles/AndroidIntent/article.html
[DataWedge Android DWDemo Sample Feedback]: mailto:feedbacksw@motorolasolutions.com?Subject=DataWedge%20Android%20DWDemoSample%20Feedback