Develop Reference

How to record and save a video using Google Glass

I am fairly new to android studio and developing with android. I have been trying this for months now, I need to record and save a video using Google Glass. The code that I currently have follows. This is code inspired from https://developers.google.com/glass/develop/gdk/camera#images
When I run this process, the video will start recording and then when the recording is stopped, it will give me the option "tap to accept" When I tap, nothing happens. I understand this is because my method "processVideoWhenReady" does absolutely nothing.
I would like to know if anyone could help me with what I should include in that method to save the video and allow it to be viewed by the user within my application.
Any literature or websites that have useful information about developing for Google Glass would also be a huge help if possible. Google's documentation doesn't seem very helpful to me and very limited.
import android.app.Activity;
import android.graphics.Camera;
import android.media.CamcorderProfile;
import android.media.MediaRecorder;
import android.net.Uri;
import android.os.Bundle;
import android.content.Intent;
import android.os.FileObserver;
import android.provider.MediaStore;
import android.util.Log;
import android.widget.VideoView;
import com.google.android.glass.content.Intents;
import com.google.android.glass.widget.CardBuilder;
import java.io.File;
import java.io.IOException;
public class RecordActivity extends Activity {
private static final int CAMERA_VID_REQUEST = 1337;
static final int REQUEST_VIDEO_CAPTURE = 1;
public VideoView mVideoView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setContentView(R.layout.activity_record);
takeVideo();
}
private void takeVideo(){
Intent startVideo = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
if (startVideo.resolveActivity(getPackageManager()) != null){
startActivityForResult(startVideo, REQUEST_VIDEO_CAPTURE);
}
//RecordActivity.this.startActivityForResult(startVideo, CAMERA_VID_REQUEST);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data){
//System.out.println("Entered onActivityResult() method");
String a = getIntent().getStringExtra("record");
System.out.println(a);
if(requestCode == CAMERA_VID_REQUEST && resultCode == RESULT_OK) {
//System.out.println("Result Okay");
Uri videoUri = data.getData();
mVideoView.setVideoURI(videoUri);
String videoPath = data.getStringExtra(Intents.EXTRA_VIDEO_FILE_PATH);
processVideoWhenReady(videoPath);
}
super.onActivityResult(requestCode, resultCode, data);
}
protected void processVideoWhenReady(final String videoPath){
final File videoFile = new File(videoPath);
if (videoFile.exists()){
//Process Video
}
else {
final File parentDirectory = videoFile.getParentFile();
FileObserver observer = new FileObserver(parentDirectory.getPath(), FileObserver.CLOSE_WRITE | FileObserver.MOVED_TO) {
private boolean isFileWritten;
#Override
public void onEvent(int event, String path) {
if (!isFileWritten) {
//make sure file was created in directory expected
File affectedFile = new File(parentDirectory, path);
isFileWritten = affectedFile.equals(videoFile);
if (isFileWritten) {
stopWatching();
runOnUiThread(new Runnable() {
#Override
public void run() {
processVideoWhenReady(videoPath);
}
});
}
}
}
};
observer.startWatching();
}
}
}

Android ImageView content disapearing after showing

My application does this: takes a photo, then show the photo in an ImageView. The weird thing is that the photo is displayed for about a second (after taking it with the camera), and then the ImageView is empty again.
This is my code:
publish.xml
<ImageView
android:id="#+id/itemImage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
PublishActivity.java
package ar.com.guiagratis;
import java.io.File;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.view.View;
import android.widget.ImageView;
import android.widget.Toast;
public class PublishActivity extends Activity {
final int TAKE_PICTURE_REQUEST_CODE = 115;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.publish);
}
public void btnNextClick(View v) {
// TODO: disable all buttons
//Intent intent=new Intent(getApplicationContext(), TakePhotoActivity.class);
// startActivityForResult(intent, TAKE_PICTURE_RESULT_CODE);
Toast.makeText(getApplicationContext(), "Sacate una foto viteh", Toast.LENGTH_SHORT).show();
Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
File photoFile = new File(Environment.getExternalStorageDirectory(), "Photo.png");
Uri imageUri = Uri.fromFile(photoFile);
intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
startActivityForResult(intent, TAKE_PICTURE_REQUEST_CODE);
}
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case TAKE_PICTURE_REQUEST_CODE:
if (resultCode == Activity.RESULT_OK) {
File photoFile = new File(Environment.getExternalStorageDirectory(), "Photo.png");
Uri imageUri = Uri.fromFile(photoFile);
// Image captured and saved to fileUri specified in the Intent
Toast.makeText(this, "Image saved to:\n" +
imageUri, Toast.LENGTH_LONG).show();
Bitmap myBitmap = BitmapFactory.decodeFile(imageUri.getPath());
BitmapDrawable ob = new BitmapDrawable(myBitmap);
ImageView myImage = (ImageView) findViewById(R.id.itemImage);
myImage.setBackgroundDrawable(ob);
Toast.makeText(getApplicationContext(), "Qué linda foto! ", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(getApplicationContext(), "Hubo un problema al subir la imágen... ", Toast.LENGTH_SHORT).show();
}
}
}
}
Any help will be appreciated.

You're using setBackgroundDrawable(Drawable drawable) which sets the View's background.
If you want to change the ImageView's content you need to use
setImageDrawable(Drawable drawable)
or
setImageBitmap(Bitmap bm)

Ok, I finally found the problem. I was not aware that I need to use onSaveInstanceState and onRestoreInstanceState to store the values I don't want to loose from an Activity when I'm doing certain things, like initiating the Camera and taking a photo.
So I added this code:
#Override
public void onSaveInstanceState(Bundle savedInstanceState) {
super.onSaveInstanceState(savedInstanceState);
// Save UI state changes to the savedInstanceState.
// This bundle will be passed to onCreate if the process is
// killed and restarted.
savedInstanceState.putBoolean("photoUploaded", photoUploaded);
}
#Override
public void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
// Restore UI state from the savedInstanceState.
// This bundle has also been passed to onCreate.
photoUploaded = savedInstanceState.getBoolean("photoUploaded");
if (photoUploaded) {
File photoFile = new File(Environment.getExternalStorageDirectory(), "Photo.png");
Uri imageUri = Uri.fromFile(photoFile);
Bitmap myBitmap = BitmapFactory.decodeFile(imageUri.getPath());
BitmapDrawable ob = new BitmapDrawable(myBitmap);
ImageView myImage = (ImageView) findViewById(R.id.uploadedImage);
myImage.setBackgroundDrawable(ob);
}
}
and now is working.
Not sure how to do to make this question as solved.

Audio Recorder Android

I'm doing a aplication to recorder the sound, but when I try to record the sound,the emulator is stopped because it ask me to insert an SD card. What I have to do? I couldn't do without an SD card ?
Thank you!
package proiektua.proiektua;
import java.io.FileDescriptor;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
public class MainActivity extends Activity {
int peticion = 1;
Uri url1;
private int STATE_CONFIGURE;
private int mState = STATE_CONFIGURE;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
public void grabar(View v) {
Intent intent = new Intent(MediaStore.Audio.Media.RECORD_SOUND_ACTION);
startActivityForResult(intent, peticion);}
public void setOutputFile(FileDescriptor fd) {
switch (mState) {
case STATE_RECORD:
throw new RuntimeException("setOutputFile cannot be called while recording!");
case STATE_RELEASED:
throw new RuntimeException("setOutputFile called on an already released recorder!");
default:
break;
}
}
public void reproducir(View v) {
MediaPlayer mediaPlayer = MediaPlayer.create(this, url1);
mediaPlayer.start();
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK && requestCode == peticion) {
url1 = data.getData();
}
}
}

You have the option to create an SDCard through the mksdcard command and associate it with the amulator.

please look at this function:
public void setOutputFile (FileDescriptor fd)
Added in API level 3
Pass in the file descriptor of the file to be written. Call this after setOutputFormat() but before prepare().
You can decide where to store the file.
also look at this example.
http://androidfreakers.blogspot.co.il/2011/09/using-mediarecorder.html

Webview won't receive getStringExtra from previous activity

I'm trying to use a barcode scanner and then take that input and use in another activity to open with a url. I've been able to get the data to return, just not in another activity and haven't seen any projects exactly like this. I'm not sure if it has to do with intent or how I'm calling the string. The webview in the second java works but doesn't take the string. Thanks for the help!
Scanner.java (which works okay)
package com.pangolin.rollin.ts;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
public class Scanner extends Activity {
TextView tvStatus;
TextView tvResult;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_scanner);
Button websku = (Button) findViewById(R.id.btnsku);
websku.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Intent myintent = new Intent(Scanner.this, Websku.class);
startActivity(myintent);
}
});
tvStatus = (TextView) findViewById(R.id.tvStatus);
tvResult = (TextView) findViewById(R.id.tvResult);
Button scanBtn = (Button) findViewById(R.id.btnScan);
// in some trigger function e.g. button press within your code you
// should add:
scanBtn.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
try {
Intent intent = new Intent(
"com.google.zxing.client.android.SCAN");
intent.putExtra("SCAN_MODE", "QR_CODE_MODE,PRODUCT_MODE");
startActivityForResult(intent, 0);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
Toast.makeText(getApplicationContext(), "ERROR:" + e, Toast.LENGTH_LONG)
.show();
}
}
});
}
// In the same activity you’ll need the following to retrieve the results:
public void onActivityResult(int requestCode, int resultCode, Intent intent) {
if (requestCode == 0) {
if (resultCode == RESULT_OK) {
tvStatus.setText(intent.getStringExtra("SCAN_RESULT_FORMAT"));
tvResult.setText(intent.getStringExtra("SCAN_RESULT"));
} else if (resultCode == RESULT_CANCELED) {
tvStatus.setText("Press a button to start a scan.");
tvResult.setText("Scan cancelled.");
}
}
}
}
And websku.java (doesn't work, supposed to take results from previous activity.
package com.pangolin.rollin.ts;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Window;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.webkit.WebViewClient;
public class Websku extends Activity {
final Activity activity = this;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Intent intent = getIntent();
String sku = intent.getStringExtra("SCAN_RESULT");
this.getWindow().requestFeature(Window.FEATURE_PROGRESS);
setContentView(R.layout.activity_websku);
WebView webView = (WebView) findViewById(R.id.webview_sku);
webView.getSettings().setJavaScriptEnabled(true);
webView.setWebChromeClient(new WebChromeClient() {
public void onProgressChanged(WebView view, int progress) {
activity.setTitle("Loading...");
activity.setProgress(progress * 100);
if (progress == 100)
activity.setTitle(R.string.title_activity_websku);
}
});
webView.setWebViewClient(new WebViewClient() {
#Override
public void onReceivedError(WebView view, int errorCode,
String description, String failingUrl) {
// Handle the error
}
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
});
webView.loadUrl("http://m.radioshack.com/radioshack/catalog/searchList.do?categoryId=&keyword="+sku);
};
}

You don't set any extra to Websku intent:
websku.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Intent myintent = new Intent(Scanner.this, Websku.class);
startActivity(myintent);
}
});
Should be:
websku.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Intent myintent = new Intent(Scanner.this, Websku.class);
myintent.putExtra("somename", somevalue);
startActivity(myintent);
}
});

You don't set the extras for the websku Activity. Save the intent returned from the scanner:
private Intent mWebskuIntent;
public void onActivityResult(int requestCode, int resultCode, Intent intent) {
if (requestCode == 0) {
mWebskuIntent = intent;
// more of your code
Then when you start the websku Activity make a copy of the saved intent which will copy also the extras returned from the scanner:
Intent myintent = new Intent(mWebskuIntent);
myintent.setClass(Scanner.this, Websku.class);
startActivity(myintent);
You might want to check for mWebskuIntent being null as well.

Open device contacts list at button click event

How can i open Android device contacts list at button click event.

Try this code..
yourButton.setOnClickListener(new YouButtonEvent());
class YouButtonEventimplements OnClickListener{
#Override
public void onClick(View v) {
Intent it= new Intent(Intent.ACTION_PICK, Contacts.CONTENT_URI);
startActivityForResult(it, PICK_CONTACT);
}
}

Declare Some variables. Create a method & handle the events.
private static final int CONTACT_PICKER_RESULT = 1001;
private static final String DEBUG_TAG = "Contact List";
private static final int RESULT_OK = -1;
// a method to open your contact list
private void openContactList() {
Intent it = new Intent(Intent.ACTION_PICK, Contacts.CONTENT_URI);
startActivityForResult(it, CONTACT_PICKER_RESULT);
}
// handle after selecting a contact from the list
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
switch (requestCode) {
case CONTACT_PICKER_RESULT:
// handle contact results
Log.w(DEBUG_TAG, "Warning: activity result is ok!");
break;
}
} else {
// gracefully handle failure
Log.w(DEBUG_TAG, "Warning: activity result not ok");
}
}

You can use this source code as a reference:
import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
public class Test1Activity extends Activity {
private static final int PICK_CONTACT_REQUEST = 1;
private static final int PICK_CONTACT = 0;
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button pickContact = (Button) findViewById(R.id.button1);
pickContact.setOnClickListener(new OnClickListener()
{
public void onClick(View v) {
Intent i = new Intent(Intent.ACTION_INSERT_OR_EDIT);
i.setType(ContactsContract.Contacts.CONTENT_ITEM_TYPE);
startActivity(i);
}
});
}
}

if u want to pick contact from your device then use this code.
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
openContect();
dialog.dismiss();
}
and openContact() is:
private void openContect() {
Intent intent = new Intent(Intent.ACTION_PICK);
intent.setType(ContactsContract.Contacts.CONTENT_TYPE);
if (intent.resolveActivity(getPackageManager()) != null) {
startActivityForResult(intent, REQUEST_SELECT_CONTACT);
}
}
and in your onActivityResult() use this:
if (requestCode==REQUEST_SELECT_CONTACT && resultCode == RESULT_OK && null != data){
Uri contactUri = data.getData();
//do what you want...
}