Develop Reference

How to read TensorBuffer

I am new to Tensorflow and Android, I am trying to classify data from external accelerometer to predict weather it align to left, right, forward , back or center. So I trained model using colab and converted it to tflite and added it to Android App, I could not make any sense of output
package com.yogai.tensorflowlava;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Context;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import android.widget.Toolbar;
import com.yogai.tensorflowlava.ml.Adxl345;
import org.tensorflow.lite.DataType;
import org.tensorflow.lite.TensorFlowLite;
import org.tensorflow.lite.support.tensorbuffer.TensorBuffer;
import java.io.IOException;
import java.nio.ByteBuffer;
public class MainActivity extends AppCompatActivity {
Button submitButton;
EditText editText;
String text;
String TAG = "My_APp";
// private Context context;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Context context;
editText = findViewById(R.id.editText);
submitButton = findViewById(R.id.submitButton);
submitButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
text = editText.getText().toString().trim();
//String str = "geekss#for#geekss";
// String[] arrOfStr = text.split(",", 3);
//
// // String[] strings = new String[] {"1", "2", "3", "4"};
// if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.N) {
// Float[] floats = Arrays.stream(arrOfStr).map(Float::valueOf).toArray(Float[]::new);
// }
String[] parts = text.split(",");
float[] numbers = new float[parts.length];
for (int i = 0; i < parts.length; ++i) {
float number = Float.parseFloat(parts[i]);
float rounded = (int) Math.round(number * 1000) / 1000f;
numbers[i] = rounded;
}
// float[][] array2d = new float[1][3];
//
//
//
// for(int j=1;j<4;j++) {
// array2d[1][j] = numbers[j];
//
//
// }
// Float testValue = array2d[1][1]+1;
Log.d(TAG,String.valueOf(numbers[1]));
ByteBuffer.allocate(4).putFloat(numbers[0]).array();
byte[] byteArray= FloatArray2ByteArray(numbers);
ByteBuffer byteBuffer = ByteBuffer.wrap(byteArray);
getOutput(byteBuffer);
}
});
}
public static byte[] FloatArray2ByteArray(float[] values){
ByteBuffer buffer = ByteBuffer.allocate(4 * values.length);
for (float value : values){
buffer.putFloat(value);
}
return buffer.array();
}
private void getOutput(ByteBuffer byteBuffer) {
try {
Adxl345 model = Adxl345.newInstance(getApplicationContext());
// Creates inputs for reference.
TensorBuffer inputFeature0 = TensorBuffer.createFixedSize(new int[]{1, 3}, DataType.FLOAT32);
inputFeature0.loadBuffer(byteBuffer);
// Runs model inference and gets result.
Adxl345.Outputs outputs = model.process(inputFeature0);
TensorBuffer outputFeature0 = outputs.getOutputFeature0AsTensorBuffer();
String converted = new String(buffer.array(), "UTF-8");
Toast.makeText(this,"output: "+outputFeature0.toString(),Toast.LENGTH_SHORT).show();
// Releases model resources if no longer used.
model.close();
} catch (IOException e) {
// TODO Handle the exception
Toast.makeText(this,"Error: "+ e.toString(),Toast.LENGTH_SHORT).show();
}
}
}

You can use outputFeature0.getDataType().toString() to check the type of the data.
It would return a string among "FLOAT32","INT32","UINT8","INT64","STRING","INT8".
If the type of the data is FLOAT32, you can get the data like below:
float[] data=outputFeature0.getFloatArray()

Image Slider using Pager-view with Bitmap not working

Dear All I use PagerView to make a slider images and every thing went well
if I use a URL images and String array from drawable images.
But when I use a file stored in my APP directory its not work you will see my code here
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<android.support.v4.view.ViewPager
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/viewPager"/>
</android.support.constraint.ConstraintLayout>
image_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="#+id/imageView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
app:srcCompat="#mipmap/ic_launcher" />
</LinearLayout>
BitmapPagerAdapter.java
package com.samcotec.pager2;
import android.content.Context;
import android.graphics.Bitmap;
import android.support.v4.view.PagerAdapter;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.Toast;
import java.lang.reflect.Array;
import java.util.ArrayList;
import java.util.List;
public class BitmapPagerAdapter extends PagerAdapter {
Context context;
ArrayList<Bitmap> bitmaps;
LayoutInflater layoutInflater;
public BitmapPagerAdapter(Context context, ArrayList<Bitmap> bitmaps){
this.context = context;
this.bitmaps = bitmaps;
layoutInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
#Override
public int getCount() {
return bitmaps.size();
}
#Override
public boolean isViewFromObject(View view, Object object) {
return view == object;
}
#Override
public Object instantiateItem(ViewGroup container, final int position){
View itemView = layoutInflater.inflate(R.layout.image_layout, container, false);
ImageView imageView = (ImageView) itemView.findViewById(R.id.imageView);
imageView.setImageBitmap(bitmaps.get(position));
container.addView(itemView);
//listening to image click
imageView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(context, "you clicked image " + (position + 1), Toast.LENGTH_LONG).show();
}
});
return itemView;
}
#Override
public void destroyItem(ViewGroup container, int position, Object object) {
container.removeView((LinearLayout) object);
}
}
MainActivity.java
package com.samcotec.pager2;
import android.content.res.AssetManager;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
ArrayList<Bitmap> bitmap = new ArrayList<Bitmap>();
ViewPager viewPager;
BitmapPagerAdapter bitmapPagerAdapter;
String imgPath;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imgPath = "/data/data/" + this.getPackageName() + "/" + "quranIMG/";
File savefliepath = new File(imgPath);
if(!savefliepath.exists()){
System.out.println("file not exist: " + imgPath);
savefliepath.mkdir();
}else{
//System.out.println("file exist: " + imgPath);
}
final AssetManager assetManager = getAssets();
String[] list;
InputStream f;
String FileName;
String URLPATH = "http://192.168.100.12/quran/";
Integer StartFrom = 100;
Integer EndTo = 150;
for(int i = StartFrom; i <= EndTo; i++){
FileName = "a-("+i+").png";
File savefile = new File(imgPath + FileName);
if(!savefile.exists()){
// tools.copyAssets(assetManager,Path);
DownloadTask downloadTask = new DownloadTask(URLPATH,imgPath,FileName);
}else{
}
// imgList.add(i);
}
// TODO : we must check internet connection if its ok
for (int i = StartFrom; i<EndTo; i++){
String b = imgPath + "a-("+i+").png";
// System.out.println("file exists" + b);
FileInputStream fiStream;
File imgFile = new File(getFilesDir(), b);
Bitmap bit;
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 4;
if(imgFile.exists()){
try{
fiStream = MainActivity.this.openFileInput(b);
bit = BitmapFactory.decodeStream(fiStream);
bitmap.add(bit);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
}else{
DownloadTask downloadTask = new DownloadTask(URLPATH,imgPath,"a-("+i+").png");
File imgFile1 = new File(getFilesDir(), b);
if(imgFile1.exists()) {
try{
fiStream = MainActivity.this.openFileInput(b);
bit = BitmapFactory.decodeStream(fiStream);
bitmap.add(bit);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
}else{
bit = null;
}
}
}
viewPager = (ViewPager) findViewById(R.id.viewPager);
bitmapPagerAdapter = new BitmapPagerAdapter(MainActivity.this,bitmap);
viewPager.setAdapter(bitmapPagerAdapter);
}
}
I user some tools to download files and store it in imgPath
Images is downloaded and stored and no issue for it
but the issue that
bitmap.size();
always empty and the APP Crashed

The problem is in my DownloadTask not in the code itself.
I solve it by changing the download task to code:
package com.samcotec.pager2;
import android.widget.Toast;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;
public class DownloadTask {
public DownloadTask(final String url, final String savePath, final String saveName) {
new Thread(new Runnable() {
public void run() {
try {
System.out.println(url+saveName);
URL sourceUrl = new URL(url+saveName);
URLConnection conn = sourceUrl.openConnection();
conn.connect();
InputStream inputStream = conn.getInputStream();
int fileSize = conn.getContentLength();
File savefilepath = new File(savePath);
if (!savefilepath.exists()) {
savefilepath.mkdirs();
}
File savefile = new File(savePath+saveName);
if (savefile.exists()) {
savefile.delete();
}
savefile.createNewFile();
FileOutputStream outputStream = new FileOutputStream(savePath+saveName, true);
byte[] buffer = new byte[1024];
int readCount = 0;
int readNum = 0;
int prevPercent = 0;
while (readCount < fileSize && readNum != -1) {
readNum = inputStream.read(buffer);
if (readNum > -1) {
outputStream.write(buffer, 0, readNum);
readCount = readCount + readNum;
int percent = (int) (readCount * 100 / fileSize);
if (percent > prevPercent) {
System.out.println(percent);
//Toast.makeText(LoadPage.MY_CONTEXT,percent,Toast.LENGTH_LONG);
prevPercent = percent;
}
}
}
outputStream.flush();
outputStream.close();
inputStream.close();
//Thread.sleep(50);
} catch (Exception e) {
System.out.println( e);
}
}
}).start();
}
}

App crashing when detecting faces in large size images

I am fetching the image from the phone's gallery and setting it in an imageview and using the mobile vision library of google trying to detect the faces in that image. i have also reduced the image size so now the first large size image will get loaded in the image view properly but if you try to load another large size image the app would crash. Also while detecting the faces of large size image the app is crashing in those images the app is getting crashed.
Logcat:
MainActivity.java
package com.imagegallery.app.imagegallery;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Point;
import android.graphics.RectF;
import android.graphics.drawable.BitmapDrawable;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.util.SparseArray;
import android.view.Display;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
import com.google.android.gms.vision.Frame;
import com.google.android.gms.vision.face.Face;
import com.google.android.gms.vision.face.FaceDetector;
import java.io.IOException;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
import java.util.TimeZone;
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
private int PICK_IMAGE_REQUEST=1;
Button btnLoad, btnDetFace;
int count=0;
Context cntx;
String open_time,close_time;
DatabaseHandler db = new DatabaseHandler(this);
Bitmap bitmap;
ImageView imageView;
String img_name, realPath;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
cntx=this;
btnLoad=(Button) findViewById(R.id.btn_open);
btnLoad.setOnClickListener(this);
btnDetFace=(Button) findViewById(R.id.detection);
btnDetFace.setOnClickListener(this);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
// Return true to display menu
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
Intent dbmanager = new Intent(this,AndroidDatabaseManager.class);
startActivity(dbmanager);
return true;
}
return super.onOptionsItemSelected(item);
}
#Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_open:
Intent intent = new Intent();
intent.setType("image/* video/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(intent, PICK_IMAGE_REQUEST);
break;
case R.id.detection:
if(bitmap == null){
Toast.makeText(MainActivity.this, "bitmap == null",
Toast.LENGTH_LONG).show();
}
else{
detectFace();
Toast.makeText(MainActivity.this,"Done",
Toast.LENGTH_LONG).show();
}
break;
}
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == PICK_IMAGE_REQUEST && resultCode == RESULT_OK && data != null && data.getData() != null) {
Uri uri = data.getData();
try {
bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), uri);
imageView = (ImageView) findViewById(R.id.imageView);
//compressImage(uri);
// imageView.setImageBitmap(bitmap);
Display display = getWindowManager().getDefaultDisplay();
Point size = new Point();
display.getSize(size);
int width = size.x;
int height = size.y;
// SDK < API11
if (Build.VERSION.SDK_INT < 11)
realPath = RealPathUtil.getRealPathFromURI_BelowAPI11(this, data.getData());
// SDK >= 11 && SDK < 19
else if (Build.VERSION.SDK_INT < 19)
realPath = RealPathUtil.getRealPathFromURI_API11to18(this, data.getData());
// SDK > 19 (Android 4.4)
else
realPath = RealPathUtil.getRealPathFromURI_API19(this, data.getData());
imageView.setImageBitmap(ImageResizer
.decodeSampledBitmapFromFile(realPath, width, height));
img_name=realPath.substring(realPath.lastIndexOf("/")+1);
count = ++count;
if (count == 1) {
Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("GMT+5:30"));
Date currentLocalTime = cal.getTime();
DateFormat date = new SimpleDateFormat("hh:mm:ss");
date.setTimeZone(TimeZone.getTimeZone("GMT+5:30"));
String localTime = date.format(currentLocalTime);
open_time = localTime;
}
else if (count > 1) {
Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("GMT+5:30"));
Date currentLocalTime = cal.getTime();
DateFormat date = new SimpleDateFormat("hh:mm:ss");
date.setTimeZone(TimeZone.getTimeZone("GMT+5:30"));
String localTime = date.format(currentLocalTime);
close_time = localTime;
Log.d("Insert: ", "Inserting ..");
db.addTime(new Time(img_name,open_time, close_time));
open_time = localTime;
Log.d("Reading: ", "Reading all contacts..");
List<Time> time = db.getAllData();
for (Time t : time) {
String log = "Start time: " + t.getStartTime() + " ,End Time: " + t.getEndTime();
// Writing Time to log
Log.d("Time: ", log);
}
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
private void detectFace(){
//Create a Paint object for drawing with
Paint myRectPaint = new Paint();
myRectPaint.setStrokeWidth(5);
myRectPaint.setColor(Color.RED);
myRectPaint.setStyle(Paint.Style.STROKE);
//Create a Canvas object for drawing on
Bitmap tempBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.RGB_565);
Canvas tempCanvas = new Canvas(tempBitmap);
tempCanvas.drawBitmap(bitmap, 0, 0, null);
//Detect the Faces
FaceDetector faceDetector = new FaceDetector.Builder(getApplicationContext()).build();
//!!!
//Cannot resolve method setTrackingEnabled(boolean)
//skip for now
//faceDetector.setTrackingEnabled(false);
Frame frame = new Frame.Builder().setBitmap(bitmap).build();
SparseArray<Face> faces = faceDetector.detect(frame);
//Draw Rectangles on the Faces
for(int i=0; i<faces.size(); i++) {
Face thisFace = faces.valueAt(i);
float x1 = thisFace.getPosition().x;
float y1 = thisFace.getPosition().y;
float x2 = x1 + thisFace.getWidth();
float y2 = y1 + thisFace.getHeight();
tempCanvas.drawRoundRect(new RectF(x1, y1, x2, y2), 2, 2, myRectPaint);
}
imageView.setImageDrawable(new BitmapDrawable(getResources(),tempBitmap));
}
}

set following code in manifest file application tag
android:largeHeap="true"

Better to compress the image size using bitmap Compress function
tempBitmap.compress(Bitmap.CompressFormat.JPEG, 70, FileName);
you can adjust compress value as you like.

http://developer.android.com/training/displaying-bitmaps/index.html
You have to use Recycleimageview which is provide by Android for this situation. You can compress bitmap at display time.. Please review given link implment it your issue will resolve.
And android:largeHeap="true" support from Android 3.0 to latest version it does't support to 2.3 version and This is not solution. You have use recycleimage if you want fix issue properly.

How to slide images from arrayList in android

I am having an arrayList of Imageurls and want to slide it one by one when user slides image second image should dsplay,I have tried as belo but I only able to change when i touch,It changes on touch,But i want it on slide..So Please tell me what code changes should i make..Thank you
package com.epe.smaniquines.ui;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.ArrayList;
import java.util.Timer;
import twitter4j.Twitter;
import twitter4j.auth.RequestToken;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.graphics.Bitmap;
import android.graphics.Matrix;
import android.graphics.PointF;
import android.graphics.drawable.BitmapDrawable;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.provider.MediaStore;
import android.provider.MediaStore.Images;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.text.Spannable;
import android.text.SpannableStringBuilder;
import android.text.style.URLSpan;
import android.util.Base64;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnTouchListener;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.AdapterViewFlipper;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.ViewFlipper;
import com.epe.smaniquines.R;
import com.epe.smaniquines.adapter.FlipperAdapter;
import com.epe.smaniquines.adapter.ImageSwipeAdapter;
import com.epe.smaniquines.adapter.SimpleGestureFilter;
import com.epe.smaniquines.backend.AlertDialogManager;
import com.epe.smaniquines.backend.ConnectionDetector;
import com.epe.smaniquines.uc.Menu;
import com.epe.smaniquines.util.Const;
import com.nostra13.universalimageloader.core.DisplayImageOptions;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;
public class DetailsActivity extends Activity implements OnClickListener,
OnTouchListener {
private SimpleGestureFilter detector;
ImageView proImage, ivSave, ivInfo, ivPlay, ivBak, iv_share;
RelativeLayout rl_botm, rl_option;
TextView tv_facebuk, tv_twiter, tv_nothanks, tv_email, tv_save, tv_quote;
String big_img;
int pos;
ViewPager viewPager;
ImageSwipeAdapter adapter;
private static SharedPreferences mSharedPreferences;
ArrayList<String> resultArray;
private DisplayImageOptions options;
public static ImageLoader imageLoader;
RelativeLayout rl_info;
public boolean flag = false;
Menu menu;
public boolean flag1 = false;
boolean isOnClick = false;
int i = 0;
String cat_nem;
File casted_image;
private int PicPosition;
private Handler handler = new Handler();
ProgressDialog pDialog;
ConnectionDetector cd;
// Alert Dialog Manager
AlertDialogManager alert = new AlertDialogManager();
int mFlipping = 0;
ViewFlipper viewFlipper;
Timer timer;
int flagD = 0;
String data;
String shareType;
File image;
static String PREFERENCE_NAME = "twitter_oauth";
static final String PREF_KEY_OAUTH_TOKEN = "oauth_token";
static final String PREF_KEY_OAUTH_SECRET = "oauth_token_secret";
static final String PREF_KEY_TWITTER_LOGIN = "isTwitterLogedIn";
TextView titledetail;
static final String TWITTER_CALLBACK_URL = "oauth://t4jsample";
// Twitter oauth urls
static final String URL_TWITTER_AUTH = "auth_url";
static final String URL_TWITTER_OAUTH_VERIFIER = "oauth_verifier";
static final String URL_TWITTER_OAUTH_TOKEN = "oauth_token";
public static String PACKAGE_NAME;
static String TWITTER_CONSUMER_KEY = "AzFSBq1Od4lYGGcGR0u9GkMIT"; // place
static String TWITTER_CONSUMER_SECRET = "MBwdard2Y4l6LT6z219NJ6x8aZ4jyK8JBKZ85usRPcDP8ujwM0"; // place
Matrix matrix = new Matrix();
Matrix savedMatrix = new Matrix();
static final int NONE = 0;
static final int DRAG = 1;
static final int ZOOM = 2;
int mode = NONE;
// Remember some things for zooming
PointF start = new PointF();
PointF mid = new PointF();
float oldDist = 1f;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_detail);
PACKAGE_NAME = getApplicationContext().getPackageName();
initialize();
cat_nem = getIntent().getStringExtra("cat_name");
System.out.println(":::::::::::CAt nem:::::::::" + cat_nem);
titledetail.setText(cat_nem);
proImage.setScaleType(ImageView.ScaleType.FIT_CENTER);
proImage.setOnTouchListener(this);
showHashKey(this);
printKeyHashForThisDevice();
pos = getIntent().getIntExtra("pos", 0);
cd = new ConnectionDetector(getApplicationContext());
// Check if Internet present
if (!cd.isConnectingToInternet()) {
// Internet Connection is not present
alert.showAlertDialog(DetailsActivity.this,
"Internet Connection Error",
"Please connect to working Internet connection", false);
// stop executing code by return
return;
}
// Check if twitter keys are set
if (TWITTER_CONSUMER_KEY.trim().length() == 0
|| TWITTER_CONSUMER_SECRET.trim().length() == 0) {
// Internet Connection is not present
alert.showAlertDialog(DetailsActivity.this, "Twitter oAuth tokens",
"Please set your twitter oauth tokens first!", false);
// stop executing code by return
return;
}
mSharedPreferences = getApplicationContext().getSharedPreferences(
"MyPref", 0);
/*
* Intent i = getIntent(); data = i.getStringExtra("data"); shareType =
* i.getStringExtra("type");
*/
big_img = getIntent().getStringExtra(Const.TAG_BIG_IMG);
// imageLoader.displayImage(big_img, proImage, options);
resultArray = getIntent().getStringArrayListExtra("array");
viewPager = (ViewPager) findViewById(R.id.view_pager);
viewPager.setVisibility(View.VISIBLE);
ImagePagerAdapter adapter = new ImagePagerAdapter();
viewPager.setCurrentItem(resultArray.indexOf(pos));
viewPager.setAdapter(adapter);
ivInfo.setOnClickListener(this);
ivPlay.setOnClickListener(this);
tv_email.setOnClickListener(this);
tv_facebuk.setOnClickListener(this);
tv_nothanks.setOnClickListener(this);
tv_save.setOnClickListener(this);
tv_twiter.setOnClickListener(this);
iv_share.setOnClickListener(this);
ivBak.setOnClickListener(this);
tv_quote.setOnClickListener(this);
proImage.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
viewPager.setVisibility(View.VISIBLE);
}
});
// viewFlipper = (ViewFlipper) findViewById(R.id.flipper);
/*
* imageLoader.displayImage(big_img, proImage, options);
* proImage.postDelayed(swapImage, 1000);
*/
viewPager.setOnTouchListener(new OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_UP) {
if (isOnClick) {
if (event.getX() > viewPager.getWidth() / 2) {
// go to next
i = pos;
viewPager.setCurrentItem(resultArray.indexOf(i),
true);
i++;
} else {
viewPager.setCurrentItem(resultArray.indexOf(i),
true);
i--;
// go to previous
}
return true;
}
}
return false;
}
});
}
public void open(View view) {
Intent shareIntent = new Intent(android.content.Intent.ACTION_SEND);
shareIntent.setType("*/*");
shareIntent.putExtra(Intent.EXTRA_TEXT, "Hello test"); // <- String
Uri screenshotUri = Uri.parse(image.getPath());
shareIntent.putExtra(Intent.EXTRA_STREAM, screenshotUri);
startActivity(Intent.createChooser(shareIntent, "Share image using"));
}
void initialize() {
proImage = (ImageView) findViewById(R.id.iv_det);
ivInfo = (ImageView) findViewById(R.id.iv_info);
ivPlay = (ImageView) findViewById(R.id.iv_play);
ivBak = (ImageView) findViewById(R.id.iv_back);
rl_botm = (RelativeLayout) findViewById(R.id.rl_bottom);
rl_option = (RelativeLayout) findViewById(R.id.rl_options);
tv_save = (TextView) findViewById(R.id.tv_save);
tv_email = (TextView) findViewById(R.id.tv_email);
tv_facebuk = (TextView) findViewById(R.id.tv_facebook);
tv_nothanks = (TextView) findViewById(R.id.tv_no_thanks);
tv_twiter = (TextView) findViewById(R.id.tv_twiter);
rl_option.setVisibility(View.GONE);
tv_quote = (TextView) findViewById(R.id.tv_qote);
iv_share = (ImageView) findViewById(R.id.iv_share);
imageLoader = ImageLoader.getInstance();
imageLoader.init(ImageLoaderConfiguration
.createDefault(DetailsActivity.this));
rl_info = (RelativeLayout) findViewById(R.id.rl_info);
rl_info.setVisibility(View.GONE);
resultArray = new ArrayList<String>();
ivPlay.setVisibility(View.VISIBLE);
titledetail = (TextView) findViewById(R.id.titledetail);
// twitter
// Login button
}
#SuppressLint("NewApi")
#Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.iv_share:
rl_option.setVisibility(View.VISIBLE);
rl_info.setVisibility(View.GONE);
if (flag1) {
rl_option.setVisibility(View.VISIBLE);
flag1 = false;
} else {
rl_option.setVisibility(View.GONE);
flag1 = true;
}
break;
case R.id.iv_play:
proImage.setVisibility(View.GONE);
AdapterViewFlipper flipper = (AdapterViewFlipper) findViewById(R.id.flipper);
flipper.setAutoStart(true);
flipper.setAdapter(new FlipperAdapter(DetailsActivity.this,
resultArray));
Animation in = AnimationUtils.loadAnimation(this,
android.R.anim.slide_in_left);
Animation out = AnimationUtils.loadAnimation(this,
android.R.anim.slide_out_right);
flipper.setAnimation(out);
ivPlay.setVisibility(View.INVISIBLE);
break;
case R.id.iv_back:
finish();
break;
case R.id.tv_email:
rl_option.setVisibility(View.GONE);
Intent email = new Intent(Intent.ACTION_SEND);
email.putExtra(Intent.EXTRA_EMAIL,
new String[] { "youremail#yahoo.com" });
email.putExtra(Intent.EXTRA_SUBJECT, "subject");
email.putExtra(Intent.EXTRA_TEXT, "message");
email.setType("message/rfc822");
startActivity(Intent.createChooser(email,
"Choose an Email client :"));
break;
case R.id.tv_save:
save();
rl_option.setVisibility(View.GONE);
break;
case R.id.tv_facebook:
// facebookShare();
/*
* save(); open(v);
*/
rl_option.setVisibility(View.GONE);
break;
case R.id.tv_no_thanks:
rl_option.setVisibility(View.GONE);
break;
case R.id.tv_twiter:
rl_option.setVisibility(View.GONE);
// loginToTwitter();
// new updateTwitterStatus().execute("3sManiquines");
break;
case R.id.iv_info:
rl_info.setVisibility(View.VISIBLE);
rl_option.setVisibility(View.GONE);
if (flag) {
rl_info.setVisibility(View.VISIBLE);
flag = false;
} else {
rl_info.setVisibility(View.GONE);
flag = true;
}
break;
case R.id.tv_qote:
rl_option.setVisibility(View.GONE);
String url = big_img;
SpannableStringBuilder builder = new SpannableStringBuilder();
builder.append("Hi Go to product for details:");
int start = builder.length();
builder.append(url);
int end = builder.length();
builder.setSpan(new URLSpan(url), start, end,
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
Intent i = new Intent(Intent.ACTION_SEND);
i.setType("message/rfc822");
i.putExtra(Intent.EXTRA_EMAIL, new String[] { "" });
i.putExtra(Intent.EXTRA_SUBJECT, "Quote");
i.putExtra(Intent.EXTRA_TEXT, builder);
startActivity(Intent.createChooser(i, "Select application"));
break;
}
}
public static void showHashKey(Context context) {
try {
PackageInfo info = context.getPackageManager().getPackageInfo(
"com.epe.3SManiquines", PackageManager.GET_SIGNATURES); // Your
// package
// name
// here
for (android.content.pm.Signature signature : info.signatures) {
MessageDigest md = MessageDigest.getInstance("SHA");
md.update(signature.toByteArray());
Log.v("KeyHash:",
Base64.encodeToString(md.digest(), Base64.DEFAULT));
}
} catch (NameNotFoundException e) {
} catch (NoSuchAlgorithmException e) {
}
}
// slide show..!!!
MediaPlayer introSound, bellSound;
Runnable swapImage = new Runnable() {
#Override
public void run() {
myslideshow();
handler.postDelayed(this, 1000);
}
};
private void myslideshow() {
PicPosition = resultArray.indexOf(big_img);
if (PicPosition >= resultArray.size())
PicPosition = resultArray.indexOf(big_img); // stop
else
resultArray.get(PicPosition);// move to the next gallery element.
}
//
// SAVE TO SD CARD..!!
void save() {
BitmapDrawable drawable = (BitmapDrawable) proImage.getDrawable();
Bitmap bitmap = drawable.getBitmap();
File sdCardDirectory = Environment.getExternalStorageDirectory();
File dir = new File(sdCardDirectory.getAbsolutePath()
+ "/3sManiquines/");
image = new File(sdCardDirectory, "3s_" + System.currentTimeMillis()
+ ".png");
dir.mkdirs();
boolean success = false;
// Encode the file as a PNG image.
FileOutputStream outStream;
try {
outStream = new FileOutputStream(image);
bitmap.compress(Bitmap.CompressFormat.PNG, 100, outStream);
/* 100 to keep full quality of the image */
outStream.flush();
outStream.close();
success = true;
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
if (success) {
addImageToGallery(dir + "", DetailsActivity.this);
Toast.makeText(getApplicationContext(), "Image saved with success",
Toast.LENGTH_LONG).show();
} else {
Toast.makeText(getApplicationContext(),
"Error during image saving", Toast.LENGTH_LONG).show();
}
}//
public static void addImageToGallery(final String filePath,
final Context context) {
ContentValues values = new ContentValues();
values.put(Images.Media.DATE_TAKEN, System.currentTimeMillis());
values.put(Images.Media.MIME_TYPE, "image/png");
values.put(MediaStore.MediaColumns.DATA, filePath);
context.getContentResolver().insert(Images.Media.EXTERNAL_CONTENT_URI,
values);
}
// facebook...
private void printKeyHashForThisDevice() {
try {
System.out
.println("::::::::::::::::::::HAsh key called:::::::::::::");
PackageInfo info = getPackageManager().getPackageInfo(PACKAGE_NAME,
PackageManager.GET_SIGNATURES);
for (android.content.pm.Signature signature : info.signatures) {
MessageDigest md = MessageDigest.getInstance("SHA");
md.update(signature.toByteArray());
String keyHash = Base64.encodeToString(md.digest(),
Base64.DEFAULT);
System.out
.println(":::::::::::KEy hash:::::::::::::" + keyHash);
System.out.println("================KeyHash================ "
+ keyHash);
}
} catch (NameNotFoundException e) {
} catch (NoSuchAlgorithmException e) {
}
}
#Override
public boolean onTouch(View v, MotionEvent event) {
float touchPointX = event.getX();
float touchPointY = event.getY();
int[] coordinates = new int[2];
rl_info.getLocationOnScreen(coordinates);
rl_option.getLocationOnScreen(coordinates);
if (touchPointX < coordinates[0]
|| touchPointX > coordinates[0] + rl_info.getWidth()
|| touchPointY < coordinates[1]
|| touchPointY > coordinates[1] + rl_info.getHeight())
rl_info.setVisibility(View.INVISIBLE);
rl_option.setVisibility(View.INVISIBLE);
switch (event.getAction() & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_DOWN: // first finger down only
break;
case MotionEvent.ACTION_UP: // first finger lifted
/*
* if (i < resultArray.size()) {
* imageLoader.displayImage(resultArray.get(i), proImage); i++; }
*/
case MotionEvent.ACTION_POINTER_UP: // second finger lifted
break;
case MotionEvent.ACTION_POINTER_DOWN: // second finger down
break;
case MotionEvent.ACTION_MOVE:
break;
}
return true;
}
//
private class ImagePagerAdapter extends PagerAdapter {
#Override
public int getCount() {
return resultArray.size();
}
#Override
public boolean isViewFromObject(View view, Object object) {
return view == ((ImageView) object);
}
#Override
public Object instantiateItem(ViewGroup container, int position) {
Context context = DetailsActivity.this;
ImageView imageView = new ImageView(context);
int padding = context.getResources().getDimensionPixelSize(
R.dimen.padding_medium);
imageView.setPadding(padding, padding, padding, padding);
imageView.setScaleType(ImageView.ScaleType.CENTER_INSIDE);
imageLoader.displayImage(resultArray.get(position), proImage);
((ViewPager) container).addView(imageView, 0);
return imageView;
}
#Override
public void destroyItem(ViewGroup container, int position, Object object) {
((ViewPager) container).removeView((ImageView) object);
}
}
}

If you don't want the way ViewPager slide and handles pages , then you have to implement you own view ( Not with ViewPager ).
ViewPager by default slides through the pages on swipe.
If you want to slide on clicking left or right side to the viewpager , then on touch ACTION_UP call
viewPager.setCurrentItem( PAGE_NUM , true );
This will slide to next or previous page and load appropriate image url.

You can use ViewPager with fragments for each image url.
This way the memory used to draw image will be handled well by viewpager...
More the image reference you keep in memory , more the possibility of the app crashing.

Android-World Clock Widget analog

I am planning to create a world clock widget in android. The clock should show the selected country's time as an analog clock widget. But I'm feeling difficulties as I'm a beginner in android.
My widget.xml file contains the following:-
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/Widget"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_margin="8dip"
android:background="#drawable/myshape" >
<AnalogClock android:id="#+id/AnalogClock"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:dial="#drawable/widgetdial"
android:hand_hour="#drawable/widgethour"
android:hand_minute="#drawable/widgetminute"/>
I am using the following configuration activity for my widget:-
(To display the city list)
package nEx.Software.Tutorials.Widgets.AnalogClock;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Calendar;
import android.app.Activity;
import android.app.PendingIntent;
import android.app.ProgressDialog;
import android.appwidget.AppWidgetManager;
import android.content.Intent;
import android.os.Bundle;
import android.content.Context;
import android.content.SharedPreferences;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.widget.AdapterView;
import android.widget.AnalogClock;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.RemoteViews;
import android.widget.TextView;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
public class ConfigureApp extends Activity {
DateFormat df;
private ListView cityList;
public static String[][] citylist = new String[1242][10];
String[] cities = new String[1242];
String field[] = new String[20];
String list[][] = new String[1242][10];
String country = "";
String line = null;
int row = 0;
int col = 0;
// Variables for list view population
String city = "";
int position = 0;
public int[] listArray = new int[1242];
public static int len = 0;
public String[][] adapterCityList = new String[1242][3];
// Variables for passing intent data
public static final String citieslist = "com.world.citieslist";
AppWidgetManager awm;
Context c;
int awID;
#Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
// Set the result to CANCELED. This will cause the widget host to cancel
// out of the widget placement if they press the back button.
setResult(RESULT_CANCELED);
try {
citylist = getCityList();
} catch (IOException e) {
Log.e("Loading CityList", e.getMessage());
}
for (int i = 0; i < 1242; i++) {
cities[i] = citylist[i][0];
}
// Set the view layout resource to use.
setContentView(R.layout.configure);
c = ConfigureApp.this;
Intent intent = getIntent();
Bundle extras = intent.getExtras();
if (extras != null) {
awID = extras.getInt(
AppWidgetManager.EXTRA_APPWIDGET_ID,
AppWidgetManager.INVALID_APPWIDGET_ID);
} else{
finish();
}
awm = AppWidgetManager.getInstance(c);
cityList=(ListView)findViewById(R.id.CityList);
// By using setAdpater method in listview we an add string array in list.
cityList.setAdapter(new ArrayAdapter<String> (this,android.R.layout.simple_list_item_1, cities));
// cityList.setOnItemClickListener(cityListListener);
cityList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> av, View v, int pos, long id) {
df = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
String str = ((TextView) v).getText().toString();
RemoteViews remoteViews = new RemoteViews(c.getPackageName(),
R.layout.widget);
remoteViews.setTextViewText(R.id.mytext, str);
remoteViews.setTextViewText(R.id.date, df.format(new Date()));
Intent in = new Intent(c,clock.class);
PendingIntent pi = PendingIntent.getActivity(c, 0, in, 0);
remoteViews.setOnClickPendingIntent(R.id.Widget, pi);
awm.updateAppWidget(awID, remoteViews);
Intent result = new Intent();
result.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,awID);
setResult(RESULT_OK, result);
finish();
}
});
}
private String[][] getCityList() throws IOException {
Context context = getApplicationContext();
InputStream instream = context.getResources().openRawResource(R.raw.cities_final);
// if file the available for reading
if (instream != null) {
// prepare the file for reading
InputStreamReader inputreader = new InputStreamReader(instream);
BufferedReader buffreader = new BufferedReader(inputreader);
while ((line = buffreader.readLine()) != null) {
field = line.split(",");
for (String x : field) {
list[row][col] = x;
col++;
if (x != null) {
country = x;
}
}
list[row][2] = country;
row++;
col = 0;
}
for (int i = 0; (i < list.length); i++) {
for (int j = 0; (j < 3); j++) {
if (j == 1) {
list[i][j] = list[i][j].substring(0, 6);
}
}
}
}
return list;
}
}
Can I use my own custom view in the widget, apart from analog clock? Or is there any other way to show the clock? like use the Imageview as the clock face and to draw the dial according to the time?
Please help me regarding this.!!!:(

A similar example for thermometer is given in this link
http://mindtherobot.com/blog/272/android-custom-ui-making-a-vintage-thermometer/
You can create your own view and make the clock as well.

You can replaced the clock dial, clock hand minute and clock hand hour with your own drawings. Then You'll have your own custom clock.
android:dial="#drawable/YOUR_OWN_DIAL"
android:hand_hour="#drawable/YOUR_OWN_HOUR"
android:hand_minute="#drawable/YOUR_OWN_MINUTE"
Test the layout in the Graphical Layout Tool to see how it look like.