Develop Reference

Pick color from Image in ImageView [Problem]

I'm making an app in which I pick image using Camera/Gallery Intent and then set it to ImageView. After that onTouch on the image(in ImageView) I get Hex, RGB and HSL values of the color of the touched pixel of the image.
This works well for the image imported the first time but when I import image second time and touch on that new image it gives me the color of the previous image.
Here is my code:
package com.blogspot.atifsoftwares.colorslab;
import android.Manifest;
import android.content.ClipboardManager;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Build;
import android.provider.MediaStore;
import android.support.annotation.NonNull;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import java.text.NumberFormat;
public class PickFromImageActivity extends AppCompatActivity {
ImageView mImageView;
TextView mResultTv;
ImageButton mCopyBtn, mShareBtn;
Bitmap bitmap;
View view;
Uri image_uri;
private static final int IMAGE_PICK_GALLERY_CODE = 1000;
private static final int IMAGE_PICK_CAMERA_CODE = 1001;
private static final int PERMISSION_READ_STORAGE_CODE = 1002;
private static final int PERMISSION_WRITE_STORAGE_CODE = 1003;
private static final int PERMISSION_CAMERA_CODE = 1004;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_pick_from_image);
ActionBar actionBar = getSupportActionBar();
if (actionBar != null) {
actionBar.setTitle("Color Picker");
actionBar.setSubtitle("Pick color from Image");
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setDisplayShowHomeEnabled(true);
}
mImageView =findViewById(R.id.imageIv);
mResultTv = findViewById(R.id.restultTv);
mCopyBtn = findViewById(R.id.copyBtn);
mShareBtn = findViewById(R.id.shareBtn);
view = findViewById(R.id.colorView);
mImageView.setDrawingCacheEnabled(true);
mImageView.buildDrawingCache(true);
mImageView.setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN || event.getAction() == MotionEvent.ACTION_MOVE){
bitmap = mImageView.getDrawingCache();
int pixel = bitmap.getPixel((int)event.getX(), (int) event.getY());
int r = Color.red(pixel);
int g = Color.green(pixel);
int b = Color.blue(pixel);
int color = Color.TRANSPARENT;
Drawable background = view.getBackground();
if (background instanceof ColorDrawable)
color = ((ColorDrawable) background).getColor();
view.setBackgroundColor(Color.rgb(r,g,b));
mResultTv.setText("HEX: "+ String.format("#%06X", 0xFFFFFF & color)
+"\nRGB: "+ r +", "+ g +", "+ b
+"\nHSL: "+ rgbToHsl(r,g,b));
}
return true;
}
});
mCopyBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String data = mResultTv.getText().toString();
ClipboardManager cb = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
cb.setText(data);
Toast.makeText(PickFromImageActivity.this, "Copied...!", Toast.LENGTH_SHORT).show();
}
});
mShareBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String data = mResultTv.getText().toString();
Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND);
sharingIntent.setType("text/plain");
sharingIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, "Subject Here");
sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, data);
startActivity(Intent.createChooser(sharingIntent, "Share via"));
}
});
}
private String rgbToHsl(int r, int g, int b) {
final float rf = r / 255f;
final float gf = g / 255f;
final float bf = b / 255f;
final float max = Math.max(rf, Math.max(gf, bf));
final float min = Math.min(rf, Math.min(gf, bf));
final float deltaMaxMin = max - min;
float h, s;
float l = (max + min) / 2f;
if (max == min) {
// Monochromatic
h = s = 0f;
} else {
if (max == rf) {
h = ((gf - bf) / deltaMaxMin) % 6f;
} else if (max == gf) {
h = ((bf - rf) / deltaMaxMin) + 2f;
} else {
h = ((rf - gf) / deltaMaxMin) + 4f;
}
s = deltaMaxMin / (1f - Math.abs(2f * l - 1f));
}
h = (h * 60f) % 360f;
s = s*100;
l = l*100;
NumberFormat formH = NumberFormat.getNumberInstance();
formH.setMinimumFractionDigits(0);
formH.setMaximumFractionDigits(0);
String formattedH = formH.format(h);
NumberFormat formS = NumberFormat.getNumberInstance();
formS.setMinimumFractionDigits(0);
formS.setMaximumFractionDigits(0);
String formattedS = formS.format(s);
NumberFormat formL = NumberFormat.getNumberInstance();
formL.setMinimumFractionDigits(0);
formL.setMaximumFractionDigits(0);
String formattedL = formL.format(l);
return ""+ formattedH +", "+ formattedS +"%, "+ formattedL +"%";
}
public void pickCamera(){
ContentValues values = new ContentValues();
values.put(MediaStore.Images.Media.TITLE, "New Picture");
values.put(MediaStore.Images.Media.DESCRIPTION, "From Camera");
image_uri = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, image_uri);
startActivityForResult(cameraIntent, IMAGE_PICK_CAMERA_CODE);
}
public void pickGallery(){
//intent to pick image
Intent intent = new Intent(Intent.ACTION_PICK);
intent.setType("image/*");
startActivityForResult(intent, IMAGE_PICK_GALLERY_CODE);
}
#Override
public boolean onSupportNavigateUp() {
onBackPressed();
return true;
}
#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, menu);
menu.findItem(R.id.action_search).setVisible(false);
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();
//noinspection SimplifiableIfStatement
if (id == R.id.action_about) {
startActivity(new Intent(this, AboutActivity.class));
return true;
} else if (id == R.id.action_rate) {
try {
startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("https://play.google.com/store/apps/details?id=com.blogspot.atifsoftwares.colorslab")));
} catch (android.content.ActivityNotFoundException anfe) {
startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("https://play.google.com/store/apps/details?id=com.blogspot.atifsoftwares.colorslab")));
}
return true;
} else if (id == R.id.action_more) {
try {
startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("https://play.google.com/store/apps/dev?id=6868537621115215530")));
} catch (android.content.ActivityNotFoundException anfe) {
startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("https://play.google.com/store/apps/dev?id=6868537621115215530")));
}
return true;
}
else if (id == R.id.action_share) {
Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND);
sharingIntent.setType("text/plain");
String shareBody = "\"Colors Lab\" contains important tools such as Popular Colors, Pick Color from color platte, Pick Color from Image, Convert Color from and to Hex, RGB, HSL.:\n https://play.google.com/store/apps/details?id=com.blogspot.atifsoftwares.colorslab";
sharingIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, "Subject Here");
sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, shareBody);
startActivity(Intent.createChooser(sharingIntent, "Share via"));
}
else if (id == R.id.action_camera) {
//check runtime permission
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M){
if (checkSelfPermission(Manifest.permission.CAMERA)
== PackageManager.PERMISSION_DENIED ||
checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE)
== PackageManager.PERMISSION_DENIED){
//permission not granted, request it.
String[] permissions = {Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE};
//show popup for runtime permission
requestPermissions(permissions, PERMISSION_WRITE_STORAGE_CODE);
}
else {
//permission already granted
pickCamera();
}
}
else {
//system os is less then marshmallow
pickCamera();
}
}
else if (id == R.id.action_gallery) {
//check runtime permission
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M){
if (checkSelfPermission(Manifest.permission.READ_EXTERNAL_STORAGE)
== PackageManager.PERMISSION_DENIED){
//permission not granted, request it.
String[] permissions = {Manifest.permission.READ_EXTERNAL_STORAGE};
//show popup for runtime permission
requestPermissions(permissions, PERMISSION_READ_STORAGE_CODE);
}
else {
//permission already granted
pickGallery();
}
}
else {
//system os is less then marshmallow
pickGallery();
}
}
return super.onOptionsItemSelected(item);
}
//handle result of runtime permission
#Override
public void onRequestPermissionsResult(int requestCode, #NonNull String[] permissions, #NonNull int[] grantResults) {
switch (requestCode){
case PERMISSION_READ_STORAGE_CODE:{
if (grantResults.length >0 && grantResults[0] ==
PackageManager.PERMISSION_GRANTED){
//permission was granted
pickGallery();
}
else {
//permission was denied
Toast.makeText(this, "Permission denied...!", Toast.LENGTH_SHORT).show();
}
}
case PERMISSION_CAMERA_CODE:{
if (grantResults.length >0 && grantResults[0] ==
PackageManager.PERMISSION_GRANTED){
//permission was granted
pickCamera();
}
else {
//permission was denied
Toast.makeText(this, "Permission denied...!", Toast.LENGTH_SHORT).show();
}
}
}
}
//handle result of picked image
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK){
if (requestCode == IMAGE_PICK_GALLERY_CODE){
//set image to image view
mImageView.setImageURI(data.getData());
}
if (requestCode == IMAGE_PICK_CAMERA_CODE){
//set image to image view
mImageView.setImageURI(image_uri);
}
}
}
}
Screen shot:

before adding image
write this piece of code
ImgView.setImageBitmap(null);
ImgView.destroyDrawingCache();

In order to get color, first you have to get the pixel which is clicked by user
To get a pixel, you must get the bitmap on a canvas and then read the RGB values of that clicked pixel
Below code will help you do so
Bitmap bitmap = ((BitmapDrawable)image.getDrawable()).getBitmap();
int pixel = bitmap.getPixel(x,y); // x and y are coordinates
int redValue = Color.red(pixel);
int blueValue = Color.blue(pixel);
int greenValue = Color.green(pixel);
if(pixel == Color.RED){
// color is red
}
You can use multiple conditions or a logic to create RGB code from above values.

Add before adding the image...
mImageView.setImageBitmap(null);
mImageView.destroyDrawingCache();

user select image and detect colour

package com.example.hello;
//import android.support.v7.app.ActionBarActivity;
import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
/**
* This activity displays the gallery image picker.
* It displays the image that was picked.
*
* #author ITCuties
*
*/
public class GalleryActivity extends Activity implements OnClickListener {
// Image loading result to pass to startActivityForResult method.
private static int LOAD_IMAGE_RESULTS = 1;
// GUI components
private Button button; // The button
private ImageView image;// ImageView
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_gallery);
// Find references to the GUI objects
button = (Button)findViewById(R.id.button);
image = (ImageView)findViewById(R.id.image);
// Set button's onClick listener object.
button.setOnClickListener(this);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
// Here we need to check if the activity that was triggers was the Image Gallery.
// If it is the requestCode will match the LOAD_IMAGE_RESULTS value.
// If the resultCode is RESULT_OK and there is some data we know that an image was picked.
if (requestCode == LOAD_IMAGE_RESULTS && resultCode == RESULT_OK && data != null) {
// Let's read picked image data - its URI
Uri pickedImage = data.getData();
// Let's read picked image path using content resolver
String[] filePath = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(pickedImage, filePath, null, null, null);
cursor.moveToFirst();
String imagePath = cursor.getString(cursor.getColumnIndex(filePath[0]));
// Now we need to set the GUI ImageView data with data read from the picked file.
image.setImageBitmap(BitmapFactory.decodeFile(imagePath));
// At the end remember to close the cursor or you will end with the RuntimeException!
cursor.close();
}
}
#Override
public void onClick(View v) {
// Create the Intent for Image Gallery.
Intent i = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
// Start new activity with the LOAD_IMAGE_RESULTS to handle back the results when image is picked from the Image Gallery.
startActivityForResult(i, LOAD_IMAGE_RESULTS);
}
}
this code select image from gallery ..
package com.example.hello;
import android.os.Bundle;
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.Matrix;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.widget.ImageView;
import android.widget.TextView;
public class ColourPickerActivity extends Activity {
TextView touchedXY, invertedXY, imgSize, colorRGB;
ImageView imgSource1, imgSource2;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_colourpicker);
// touchedXY = (TextView)findViewById(R.id.xy);
// invertedXY = (TextView)findViewById(R.id.invertedxy);
// imgSize = (TextView)findViewById(R.id.size);
colorRGB = (TextView)findViewById(R.id.colorrgb);
// imgSource1 = (ImageView)findViewById(R.id.source1);
imgSource2 = (ImageView)findViewById(R.id.source2);
//imgSource1.setOnTouchListener(imgSourceOnTouchListener);
imgSource2.setOnTouchListener(imgSourceOnTouchListener);
}
OnTouchListener imgSourceOnTouchListener
= new OnTouchListener(){
#Override
public boolean onTouch(View view, MotionEvent event) {
float eventX = event.getX();
float eventY = event.getY();
float[] eventXY = new float[] {eventX, eventY};
Matrix invertMatrix = new Matrix();
((ImageView)view).getImageMatrix().invert(invertMatrix);
invertMatrix.mapPoints(eventXY);
int x = Integer.valueOf((int)eventXY[0]);
int y = Integer.valueOf((int)eventXY[1]);
// touchedXY.setText(
// "touched position: "
// + String.valueOf(eventX) + " / "
// + String.valueOf(eventY));
// invertedXY.setText(
// "touched position: "
// + String.valueOf(x) + " / "
// + String.valueOf(y));
Drawable imgDrawable = ((ImageView)view).getDrawable();
Bitmap bitmap = ((BitmapDrawable)imgDrawable).getBitmap();
// imgSize.setText(
// "drawable size: "
// + String.valueOf(bitmap.getWidth()) + " / "
// + String.valueOf(bitmap.getHeight()));
//Limit x, y range within bitmap
// if(x < 0){
// x = 0;
// }else if(x > bitmap.getWidth()-1){
// x = bitmap.getWidth()-1;
// }
//
// if(y < 0){
// y = 0;
// }else if(y > bitmap.getHeight()-1){
// y = bitmap.getHeight()-1;
// }
int touchedRGB = bitmap.getPixel(x, y);
colorRGB.setText("touched color: " + "#" + Integer.toHexString(touchedRGB));
colorRGB.setTextColor(touchedRGB);
return true;
}};
}
this code tell colour of pixel on touch of image which is in drawable folder .. how can i integrate these two activities .. i want to select image from gallery and apply colour detector on this image which is selected from gallery

Firs you'll need to call the second class from the fist one inside onActivityResult, adding the imagePath to the Intent:
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == LOAD_IMAGE_RESULTS && resultCode == RESULT_OK && data != null) {
(previous code)
Intent intent = new Intent(this, ColourPickerActivity.class);
intent.putExtra("IMAGE_PATH", imagePath);
startActivity(intent)
}
}
Then in your ColourPickerActivity you'll need to extract that path and load it into your ImageView:
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
(previous code)
String imagePath = getIntent().getStringExtra("IMAGE_PATH");
//Load image into the ImageView
imgSource2.setImageBitmap(BitmapFactory.decodeFile(imagePath));
}
Hope that helps, cheers!

Android Augmented Reality Pro AR 9: activity gets back when displays too many markers

I'm using this very useful tutorial (https://github.com/RaghavSood/ProAndroidAugmentedReality) for developing a custom AR app.
It works pretty fine, but when I display markers extracted from a file folder (sometimes) the app gets blocked and restarts from the previous activity.
I suppose it's because of the big number of markers situated in the same point of the screen.
Infact, when I lower the radius, and then showing a littler number of markers, the activity continues to work.
Besides, I've tried to modify the function "getTextWidth()" as many people suggest on the net.
I don't know how to reduce the number of Markers drawn on the same point of the screen (so indipendently from reducing the radius). Can you suggest me something? THANKS A LOT!!!!!
I show you the LocalDataSource.java modified:
package com.example.pointofinterests;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.os.AsyncTask;
import android.util.Log;
import android.widget.Toast;
import com.example.pointofinterests.R;
import com.example.pointofinterests.IconMarker;
import com.example.pointofinterests.Marker;
/**
* This class should be used as a example local data source. It is an example of
* how to add data programatically. You can add data either programatically,
* SQLite or through any other source.
*
* #author Justin Wetherell <phishman3579#gmail.com>
*/
public class LocalDataSource extends DataSource {
private List<Marker> cachedMarkers = new ArrayList<Marker>();
private static Bitmap icon = null;
public LocalDataSource(Resources res) {
if (res == null) throw new NullPointerException();
createIcon(res);
}
protected void createIcon(Resources res) {
if (res == null) throw new NullPointerException();
icon = BitmapFactory.decodeResource(res, R.drawable.icon);
}
public List<Marker> getMarkers() {
try{
String TestoIDPercorsi = readFileAsString("/sdcard/Epulia/IDPercorsi.txt");
if(TestoIDPercorsi==""){
// DOING NOTHING
}else {
String[] IDPercorso = TestoIDPercorsi.split("#");
for(int l=0; l<IDPercorso.length-1; l++){
String TestoPercorso = readFileAsString("/sdcard/Epulia/Percorso" + IDPercorso[l] + ".txt");
if (TestoPercorso.equals("")){
}else {
ArrayList<String> IDSTEPS2 = new ArrayList<String>();
String[] temp = TestoPercorso.split("#");
for (int j=1; j < temp.length; j++){
Log.d("RIGA_" + j + "_" + IDPercorso[l], temp[j]);
if(temp[j].substring(0,2).contains("P")){//POI
String[] POI = temp[j].split("\\|");
String id = POI[1];
String description = POI[2];
Double lat = Double.parseDouble(POI[3]);
Double lng = Double.parseDouble(POI[4]);
String type = POI[5];
Marker poi = new IconMarker(description, lat,lng, 0, Color.DKGRAY, icon);
cachedMarkers.add(poi);
}
}
}
}
}
}catch (Exception e){
Log.e("EXCEPTION", "> " + e);
}
return cachedMarkers;
}
public static String readFileAsString(String filePath) {
String result = "";
File file = new File(filePath);
if ( file.exists() ) {
FileInputStream fis = null;
try {
fis = new FileInputStream(file);
char current;
while (fis.available() > 0) {
current = (char) fis.read();
result = result + String.valueOf(current);
}
} catch (Exception e) {
Log.d("TourGuide", e.toString());
} finally {
if (fis != null)
try {
fis.close();
} catch (IOException ignored) {
}
}
}
return result;
}
}

I would like to thank the Author of the Tutorial who helped me in fixing the problem.
I report his answer that soled my problem:
Not sure why you have that limitation but this should limit the number of Markers drawn on the screen.
In class AugmentedView.java
You can introduce a new member variable:
private static int MAX_NUM_TO_DRAW = 10;
Then in the method onDraw(Canvas canvas):
You can quit the drawing loop early.
int i=0;
ListIterator<Marker> iter = collection.listIterator(collection.size());
while (iter.hasPrevious() && i<MAX_NUM_TO_DRAW ) {
Marker marker = iter.previous();
marker.draw(canvas);
i++;
}

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.

My barcode app force closes whenever it runs

I got my app to read an app and then tell me what the code says, but now I'm trying to have it encode the string back into a barcode and display it as an image on the screen. However, it always force closes the app before it starts. Here is my code, please help:
import java.util.EnumMap;
import java.util.Map;
import android.os.Bundle;
import android.app.ActionBar.LayoutParams;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.drawable.BitmapDrawable;
import android.view.Gravity;
import android.view.Menu;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;
public class Main extends Activity {
IntentIntegrator integrator = new IntentIntegrator(this);
private static final int WHITE = 0xFFFFFFFF;
private static final int BLACK = 0xFF000000;
LinearLayout myLayout = (LinearLayout)findViewById(R.id.myLayout);
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//LinearLayout myLayout = (LinearLayout)findViewById(R.id.myLayout);
Button btn =(Button)findViewById(R.id.button1);
btn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
integrator.initiateScan();
}
});
}
public void onActivityResult(int requestCode, int resultCode, Intent intent) {
IntentResult scanResult = IntentIntegrator.parseActivityResult(requestCode, resultCode, intent);
if (scanResult != null) {
Toast.makeText(Main.this,
"works",
Toast.LENGTH_SHORT).show();
String contents = intent.getStringExtra("SCAN_RESULT");
String format = intent.getStringExtra("SCAN_RESULT_FORMAT");
Toast.makeText(Main.this,
contents,
Toast.LENGTH_SHORT).show();
Bitmap bitmap = null;
ImageView iv = new ImageView(this);
try {
bitmap = encodeAsBitmap(contents, BarcodeFormat.CODE_128, 600, 300);
iv.setImageBitmap(bitmap);
} catch (WriterException e) {
e.printStackTrace();
}
myLayout.addView(iv);
TextView tv = new TextView(this);
tv.setGravity(Gravity.CENTER_HORIZONTAL);
tv.setText(contents);
myLayout.addView(tv);
}
}
Bitmap encodeAsBitmap(String contents, BarcodeFormat format, int img_width, int img_height) throws WriterException {
String contentsToEncode = contents;
if (contentsToEncode == null) {
return null;
}
Map<EncodeHintType, Object> hints = null;
hints = new EnumMap<EncodeHintType, Object>(EncodeHintType.class);
hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
MultiFormatWriter writer = new MultiFormatWriter();
BitMatrix result;
try {
result = writer.encode(contentsToEncode, format, img_width, img_height, hints);
} catch (IllegalArgumentException iae) {
// Unsupported format
return null;
}
int width = result.getWidth();
int height = result.getHeight();
int[] pixels = new int[width * height];
for (int y = 0; y < height; y++) {
int offset = y * width;
for (int x = 0; x < width; x++) {
pixels[offset + x] = result.get(x, y) ? BLACK : WHITE;
}
}
Bitmap bitmap = Bitmap.createBitmap(width, height,
Bitmap.Config.ARGB_8888);
bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
return bitmap;
}
#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;
}
}
IntentResult and IntentIntegrator are both from ZXing.
Log Cat:
03-15 13:05:04.303: E/AndroidRuntime(4363): FATAL EXCEPTION: main

In your toast, instead of Main.this you should try getApplicationContext(). Also recall that an Activity is a type of Context.

Try to move this:
LinearLayout myLayout = (LinearLayout)findViewById(R.id.myLayout);
under:
setContentView(R.layout.main);