Phone-to-PC connection app [General]

Phone-to-PC connection app

Hi folks.

Big hands + small phone = need for a GOOD phone-to-PC connection app.

Phone is a Medion E4002 (bought from Aldi) running Android 4.1.1. Does everything I want and great value for money.

I've tried a few apps but so far not found anything that easily allows me to do all my phone editing on the PC screen – mainly extensive contacts editing, but also file transfer etc. Texting is a big one too, as I need to frequently send text messages to groups.

I want an app that loads when I want to use it, not when it thinks it's needed – some are really annoying in this respect.

I sit at my desk all day with phone beside me so connection will always be via USB cable. Don't care about other connection types (Bluetooth, etc).

Any suggestions?

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Get the length of video recorded so far (or get accurate start time) [android help]

Get the length of video recorded so far (or get accurate start time)

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I want to synchronize other sensor data with the video I'm recording, and so I'd like to record "how far am I into the video" when the sensor is triggered. Is there any way to do this? I couldn't find an appropriate method on the MediaRecorder class. Another solution would be to just get the precise start time of the video recording, but my tests show that the video starts ~1sec after calling mediarecorder.start, but it's not consistent. asked 38 mins ago

You have raised an interesting topic. If you refer to the documentation in the developer page, the following diagram states the recording is supposed to start when the start() method is called. Your solution is supposed to be correct albeit there is a lag up to 1 sec. I would do it the same way I went through the MediaRecorder class methods, the only method that seems to be useful is the callback setOnInfoListener(). Set it and see if you will get some kind of information when the recording starts! I haven't tried it yet though. answered 9 mins ago

lang-java

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Gesture OnFling not called in ListView [android help]

Gesture OnFling not called in ListView

I need some help with handling the gestures on a listview. I have an videoview that I want to be able to detect left and right swipes on the layout below:

Link to a drawing of the current gesture and what is expected

The onFling method that i used to capture the event is not called

public class OnSwipeTouchListener implements OnTouchListener {

private final GestureDetector gestureDetector;
private FeedAdapter callback;

public OnSwipeTouchListener(Context context, FeedAdapter callback) {
    gestureDetector = new GestureDetector(context, new GestureListener());
    this.callback = callback; 
}
@Override
public boolean onTouch(final View view, final MotionEvent motionEvent) {
    return gestureDetector.onTouchEvent(motionEvent);
}

private final class GestureListener extends SimpleOnGestureListener {

    private static final int SWIPE_THRESHOLD = 30;

    @Override
    public boolean onDown(MotionEvent e) {
        return true;
    }


    public boolean onSingleTapUp(MotionEvent e) {
        Log.v("Tom", "tap");
        triggerTouch();
        return true;
    }
    @Override
    public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
            float velocityY) {
        boolean result = false;
        Log.v("Swipe","is called"); // this is not called when swipe is not perfectly straight
        try {
            float diffX = e2.getX() - e1.getX();
            if (Math.abs(diffX) > SWIPE_THRESHOLD) {
                if (diffX > 0) {
                    onSwipeRight();
                } else {
                    onSwipeLeft();
                }
            }
        } catch (Exception exception) {
            exception.printStackTrace();
        }
        return result;
    }
}

public void onSwipeRight() {
}

public void onSwipeLeft() {
}

public void triggerTouch() {
}

public void onSwipeBottom() {
}
}

So how to make the onFling be called when user swipes slightly off horizontal?

Thank you for your help!

Tommy

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Push notification to send from admin app to user app in android [android help]

Push notification to send from admin app to user app in android

I am working on android applications. I have two apps, user app and admin app. My requirement is the user sends request to admin app, and when the admin finds if the request is useful then it will accept the request and will send a notification to the user.

Due to some problems I cant use either php or .net webservice to send the push notification to user app. So I used third party library to send the notification. I followed the tutorial of parse push notification from https://parse.com/tutorials/android-push-notifications and worked on that example. I am able to send the notification to my application.

But here according to my requirement, when the admin app sends a request to user app, how will it uniquely identifies the user. There will be so many users who use my app. Once the admin accepts the request of a particular user it will send a notificatin to only that particular user. How can I achieve this task using parse push notification.

I am storing the user details and admin details in server database.

Will be really thankful for any suggestions.

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How to have a getStringExtra message before onCreate method? [android help]

How to have a getStringExtra message before onCreate method?

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I have two activities which in the first one I make a message and by putExtra I move it to next activity. But as you know to get the message in the secind activity I need to have getStringExtra in onCreate method. In the other hand I really need to have that message before onCreate starts. So how can I have that. public class Result extends Activity { String url; // <<< I need the message to put it here protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_single_result); Intent intent = getIntent(); String mainURL = intent.getStringExtra(SingleSearchPage.EXTRA_MESSAGE); // Here is the message url = mainURL; //Tried to change the value of URL but did not work new GetJSONTask().execute(url); } class GetJSONTask extends AsyncTask { protected JSONObject doInBackground(String... urls) { // Creating new JSON Parser JSONParser jParser = new JSONParser(); // Getting JSON from URL JSONObject json = jParser.getJSONFromUrl(url); return json; } Any idea to have the value of intent message before the onCreate? asked 8 mins ago

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Android SDK Eclipse Issue with Running in Emulator [android help]

Android SDK Eclipse Issue with Running in Emulator

I am building the layout for an android app. I am not getting any errors when running the app; however, I am getting an error right away when the app launches in the emulator. I am assuming it is a layout rendering fault. Where can I view the error, because no errors are shown in Eclipse.

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Using get() and put() to access pixel values in OpenCV for JAVA [android help]

Using get() and put() to access pixel values in OpenCV for JAVA

I am a beginner in using OpenCV for JAVA. I want to access individual pixel values of an image matrix. Since, JAVA jar for OpenCV doesn't offer nice functions like C++, I ran into some trouble. After lot of searching, I found out two different methods to do that though they are not explained properly (not even in documentation). We can do that either using get() and put() functions or by converting the mat data into a primitive java type such as arrays. I tried both but getting different output results! Please help explaining what am I doing wrong. Am I using them wrong or some other silly problem. I am still a newbie so please forgive if its a stupid question. :)

CASE 1: Using get() function

Mat A = Highgui.imread(image_addr); \\"image_addr" is the address of the image
Mat C = A.clone();
Size sizeA = A.size();
for (int i = 0; i < sizeA.height; i++)
    for (int j = 0; j < sizeA.width; j++) {
        double[] data = A.get(i, j);
        data[0] = data[0] / 2;
        data[1] = data[1] / 2;
        data[2] = data[2] / 2;
        C.put(i, j, data);
    }

CASE 2: Using Array

Mat A = Highgui.imread(image_addr); \\"image_addr" is the address of the image
Mat C = A.clone();
int size = (int) (A.total() * A.channels());
byte[] temp = new byte[size];
A.get(0, 0, temp);
for (int i = 0; i < size; i++)
   temp[i] = (byte) (temp[i] / 2);
C.put(0, 0, temp);

Now according to my understanding they both should do the same thing. They both access the individual pixel values (all 3 channels) and making it half. I am getting no error after running. But, the output image I am getting is different in these two cases. Can someone please explain what is the issue? May be I don't understand exactly how get() function works? Is it because of the byte() casting? Please help.

Thanks!

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Error #1009: Cannot access a property or method of a null object reference. -AS3 [android help]

Error #1009: Cannot access a property or method of a null object reference. -AS3

i got this error:

TypeError: Error #1009: Cannot access a property or method of a null object reference.
    at TriviaGameDeluxe/saveScore()[TriviaGameDeluxe::frame102:19]

This is my code:

//**//
playAgainbutton.addEventListener(MouseEvent.CLICK,saveScore);


function saveScore(event:MouseEvent) { // Save the score


if (savedSN == null) { // Check if a game save is created. If it is not, create one 
trace("New game save created");
savedSN = { // Set the varible 'savedSN'
            name1:"-",
            name2:"-",
            name3:"-",
            name4:"-",

        score1:"-",
        score2:"-",
        score3:"-",
        score4:"-"};
soSavedScNa.data.nameScore = savedSN; // Set the data in the save file to the 
savedSN variable
soSavedScNa.flush(); // Overwrite existing save file

}

    //**// Save the score
        if ((gameScore > savedSN.score1 || savedSN.score1 == "-") && 
gameScore != 0) {
            trace("Score 1");
            savedSN = { // Set the date the savedSN varible will have
                    name1:PName.text,
                    name2:savedSN.name1,
                    name3:savedSN.name2,
                    name4:savedSN.name3,
                score1:gameScore,
                score2:savedSN.score1,
                score3:savedSN.score2,
                score4:savedSN.score3};
            soSavedScNa.data.nameScore = savedSN; // Set the data in 
the save file to the savedSN variable
            soSavedScNa.flush(); // Overwrite existing save file
            playAgainbutton.removeEventListener(MouseEvent.MOUSE_UP, 
saveScore);
            cleanUp();
            gotoAndStop(1); // Go to the start menu
        } else if ((gameScore > savedSN.score2 || savedSN.score2 == "-") && 
gameScore != 0) {
            trace("Score 2");
            savedSN = { // Set the date the savedSN varible will have
                    name1:savedSN.name1,
                    name2:PName.text,
                    name3:savedSN.name2,
                    name4:savedSN.name3,
                score1:savedSN.score1,
                score2:gameScore,
                score3:savedSN.score2,
                score4:savedSN.score3};
            soSavedScNa.data.nameScore = savedSN; // Set the data in 
the save file to the savedSN variable
            soSavedScNa.flush(); // Overwrite existing save file
            playAgainbutton.removeEventListener(MouseEvent.MOUSE_UP, 
saveScore);
            cleanUp();
            gotoAndStop(1);
             // Go to the start menu
        } else if ((gameScore > savedSN.score3 || savedSN.score3 == "-") && 
gameScore != 0) {
            trace("Score 3");
            savedSN = { // Set the date the savedSN varible will have
                    name1:savedSN.name1,
                    name2:savedSN.name2,
                    name3:PName.text,
                    name4:savedSN.name3,
                score1:savedSN.score1,
                score2:savedSN.score2,
                score3:gameScore,
                score4:savedSN.score3};
            soSavedScNa.data.nameScore = savedSN; // Set the data in 
the save file to the savedSN variable
            soSavedScNa.flush(); // Overwrite existing save file
            playAgainbutton.removeEventListener(MouseEvent.MOUSE_UP, 
saveScore);

            cleanUp();
            gotoAndStop(1); // Go to the start menu
        } else if ((gameScore > savedSN.score4 || savedSN.score4 == "-") && 
gameScore != 0) {
            trace("Score 4");
            savedSN = { // Set the date the savedSN varible will have
                    name1:savedSN.name1,
                    name2:savedSN.name2,
                    name3:savedSN.name3,
                    name4:PName.text,
                score1:savedSN.score1,
                score2:savedSN.score2,
                score3:savedSN.score3,
                score4:gameScore};
            soSavedScNa.data.nameScore = savedSN; // Set the data in 
the save file to the savedSN variable
            soSavedScNa.flush(); // Overwrite existing save file
            playAgainbutton.removeEventListener(MouseEvent.MOUSE_UP, 
saveScore);
            cleanUp();
            gotoAndStop(1); // Go to the start menu
        }
    }

I cannot find where the error is.. Hope anybody can help. Thanks.

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File object can't find the file when there is one [android help]

File object can't find the file when there is one

In my app After user clicks on a button ,the download manager starts to download a file from internet and saving it to the internal sd card using this code:

void startDownload()
    {
        Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS).mkdirs();        
        download_req.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_WIFI | DownloadManager.Request.NETWORK_MOBILE)
        .setAllowedOverRoaming(false)
        .setTitle(PersianReshape.reshape("Downloading"))
        .setDescription(PersianReshape.reshape("currently downloading the file..."))
        .setDestinationInExternalPublicDir(Environment.getExternalStorageDirectory().getAbsolutePath() , packageId + ".sqlite");
        download_ID = mgr.enqueue(download_req);
    }

After it is downloaded, I plan to check its existance everytime app runs with this code:

String DatabaseAddress =
Environment.getExternalStorageDirectory().getAbsolutePath() +
"/ee.sqlite";
File file = new File(DatabaseAddress);
Log.d("PATH File: ", DatabaseAddress);
if (file.exists()){
Toast.makeText(getApplicationContext(), "found", Toast.LENGTH_SHORT).show();
}else{
Toast.makeText(getApplicationContext(), "not found", Toast.LENGTH_SHORT).show();
}

Now when I run this code it returns "not found" message whereas the file is already there (I checked its existance using a file manager).

the device I test on is nexus 7 and path used in saving the download file is: /storage/emulated/0/ee.sqlite

ee.sqlite is the filename of downloaded file.

/storage/emulated/0/ is the default path returned by app

Permissions added to manifest for this code are:

Q: Why does file.exists() returns false when there is a file?

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Disable checkbox if X are checked in android [android help]

Disable checkbox if X are checked in android

I have 15 CheckBox and I must to stuck user when he checks more than 5 CheckBox. Is it possible? I used the method OnCheckedChangeListener to know if an item was checked... but I don't know how to make a limit after 5 items selected. See what I've tried to do below:

I instante my integer:

int lengthBox = 15;
int lenghtMax = 5;  

I select all my View in onCreate():

View[] tagsItem = new View[] { 
    findViewById(R.id.TagsCheckAA),
    findViewById(R.id.TagsCheckBB),
    findViewById(R.id.TagsCheckCC),
    findViewById(R.id.TagsCheckDD),
    findViewById(R.id.TagsCheckEE),
    findViewById(R.id.TagsCheckFF),
    findViewById(R.id.TagsCheckGG),
    findViewById(R.id.TagsCheckHH),
    findViewById(R.id.TagsCheckII),
    findViewById(R.id.TagsCheckJJ),
    findViewById(R.id.TagsCheckKK),
    findViewById(R.id.TagsCheckLL),
    findViewById(R.id.TagsCheckMM),
    findViewById(R.id.TagsCheckNN),
    findViewById(R.id.TagsCheckOO)
};  

I create 15 CheckBox:

final CheckBox[] tagsCheck = new CheckBox[lengthBox];  

Create the method (and it's here where I don't know what to do exactly):

OnCheckedChangeListener checker = new OnCheckedChangeListener(){ 
    @Override
    public void onCheckedChanged(CompoundButton cb, boolean b) {
          if(tagsCheck[0].isChecked() || tagsCheck[1].isChecked() || 
             tagsCheck[2].isChecked() || tagsCheck[3].isChecked() || 
             tagsCheck[4].isChecked() || tagsCheck[5].isChecked() || 
             tagsCheck[6].isChecked() || tagsCheck[7].isChecked() || 
             tagsCheck[8].isChecked() || tagsCheck[9].isChecked() || 
             tagsCheck[10].isChecked() || tagsCheck[11].isChecked() || 
             tagsCheck[12].isChecked() || tagsCheck[13].isChecked() || 
             tagsCheck[14].isChecked()) {  
            if(lenghtCount < 5){
                    // How can I get the String of the CheckBox 
                    // which just checked?
                String tags = (String) tagsCheck[].getText();
                Toast.makeText(getApplicationContext(), 
                tags + " checked", Toast.LENGTH_SHORT).show();
            }else{
                Toast.makeText(getApplicationContext(), 
                "Limit reached!!!", Toast.LENGTH_SHORT).show();
            }
        }
    }
};  

After this, I set my View id to my CheckBox and call the method:

for(int i = 0; i < lengthBox; i++) {
    tagsCheck[i] = (CheckBox) tagsItem[i];
    tagsCheck[i].setOnCheckedChangeListener(checker);
}  

Can someone point me in the right way, please?

Thanks, any help will be appreciate.

---

UPDATE:

I found an inelegant way with an if(tagsCheck[0].isChecked() || ...). But I have still a problem: how can I get the CheckBox which just checked? Cause of my if(), I don't know how can I do this.

Thanks!

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MediaRecorder crash [android help]

MediaRecorder crash

---

Very beginner in Android/Java, coming from C and Symbian, I started from the Hellworld example to try to display the sound level (the project is to record this level in a text file for hours). This code is written in the MainActivity file, as a method inside the MainActivity Class :

public void GetAFlevel(View view) throws IllegalStateException, IOException {
    float audiolevel = 0, maxal = 0;
    MediaRecorder mRecorder = new MediaRecorder();
    mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
    mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
    mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
    mRecorder.setOutputFile("/dev/null");
    mRecorder.prepare();
    mRecorder.start();
    for (int i = 0; i < 1000; i++) {
        audiolevel = mRecorder.getMaxAmplitude();
        if (audiolevel > maxal)
            maxal = audiolevel;
    }
    EditText editText1 = (EditText) findViewById(R.id.editText1);
    editText1.setText(String.valueOf(maxal));
    mRecorder.stop();
    mRecorder.release();
    mRecorder = null;
}

The result is a crash of the application on the target :

11-17 00:23:09.859: D/AndroidRuntime(22096): Shutting down VM

11-17 00:23:09.859: W/dalvikvm(22096): threadid=1: thread exiting with uncaught exception (group=0x40018578)

11-17 00:23:09.921: E/AndroidRuntime(22096): FATAL EXCEPTION: main

11-17 00:23:09.921: E/AndroidRuntime(22096): java.lang.IllegalStateException: Could not execute method of the activity

No crash if I remove the following MediaRecorder functions : setAudioSource, setOutputFormat, setAudioEncoder, setOutputFile, prepare, start and stop, but getMaxAmplitude returns 0, of course.

As soon as I add only setAudioSource (normaly the only necessary for getMaxAmplitude), crash !

Any idea ?

Thanks in advance.

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