degRoms: سبتمبر 2013

The exercise "Set the rotation on a color axis of Bitmap with ColorMatrix" create rotated ColorMatrix for one color only, not all. We can create ColorMatrix from more than one by calling ColorMatrix.setConcat().

ColorMatrix.setConcat() to combine ColorMatrixs

package com.example.androiddrawbitmap;

import java.io.FileNotFoundException;

import android.net.Uri;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.ColorMatrix;
import android.graphics.ColorMatrixColorFilter;
import android.graphics.Paint;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.TextView;

public class MainActivity extends Activity {

 Button btnLoadImage;
 ImageView imageResult;
 SeekBar rotBarRed, rotBarGreen, rotBarBlue;
 TextView rotText;

 final int RQS_IMAGE1 = 1;

 Uri source;
 Bitmap bitmapMaster;
 Canvas canvasMaster;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);

  btnLoadImage = (Button) findViewById(R.id.loadimage);
  imageResult = (ImageView) findViewById(R.id.result);

  btnLoadImage.setOnClickListener(new OnClickListener() {

   @Override
   public void onClick(View arg0) {
    Intent intent = new Intent(
      Intent.ACTION_PICK,
      android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
    startActivityForResult(intent, RQS_IMAGE1);
   }
  });

  rotText = (TextView) findViewById(R.id.textRot);
  rotBarRed = (SeekBar) findViewById(R.id.rotbarred);
  rotBarGreen = (SeekBar) findViewById(R.id.rotbargreen);
  rotBarBlue = (SeekBar) findViewById(R.id.rotbarblue);
  rotBarRed.setOnSeekBarChangeListener(seekBarChangeListener);
  rotBarGreen.setOnSeekBarChangeListener(seekBarChangeListener);
  rotBarBlue.setOnSeekBarChangeListener(seekBarChangeListener);

 }

 @Override
 protected void onActivityResult(int requestCode, int resultCode, Intent data) {
  super.onActivityResult(requestCode, resultCode, data);

  if (resultCode == RESULT_OK) {
   switch (requestCode) {
   case RQS_IMAGE1:
    source = data.getData();

    try {
     bitmapMaster = BitmapFactory
       .decodeStream(getContentResolver().openInputStream(
         source));

     rotBarRed.setProgress(0);
     rotBarGreen.setProgress(0);
     rotBarBlue.setProgress(0);

     loadBitmapRotate();

    } catch (FileNotFoundException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
    }

    break;
   }
  }
 }

 OnSeekBarChangeListener seekBarChangeListener = new OnSeekBarChangeListener() {

  @Override
  public void onProgressChanged(SeekBar seekBar, int progress,
    boolean fromUser) {
   // TODO Auto-generated method stub

  }

  @Override
  public void onStartTrackingTouch(SeekBar seekBar) {
   // TODO Auto-generated method stub

  }

  @Override
  public void onStopTrackingTouch(SeekBar seekBar) {
   loadBitmapRotate();
  }
 };

 private void loadBitmapRotate() {
  if (bitmapMaster != null) {

   float rotRed = (float) rotBarRed.getProgress();
   float rotGreen = (float) rotBarGreen.getProgress();
   float rotBlue = (float) rotBarBlue.getProgress();

   rotText.setText("setRotate: " + String.valueOf(rotRed) + ", "
     + String.valueOf(rotGreen) + ", " + String.valueOf(rotBlue));

   Bitmap bitmapColorScaled = updateRot(bitmapMaster, rotRed,
     rotGreen, rotBlue);

   imageResult.setImageBitmap(bitmapColorScaled);
  }
 }

 private Bitmap updateRot(Bitmap src, float degreesRed, float degreesGreen,
   float degreesBlue) {

  int w = src.getWidth();
  int h = src.getHeight();

  Bitmap bitmapResult = Bitmap
    .createBitmap(w, h, Bitmap.Config.ARGB_8888);
  Canvas canvasResult = new Canvas(bitmapResult);
  Paint paint = new Paint();

  ColorMatrix colorMatrixRed = new ColorMatrix();
  colorMatrixRed.setRotate(0, degreesRed);
  ColorMatrix colorMatrixGreen = new ColorMatrix();
  colorMatrixGreen.setRotate(1, degreesGreen);
  ColorMatrix colorMatrixBlue = new ColorMatrix();
  colorMatrixBlue.setRotate(2, degreesBlue);
  ColorMatrix colorMatrixConcat = new ColorMatrix();
  colorMatrixConcat.setConcat(colorMatrixRed, colorMatrixGreen);
  colorMatrixConcat.setConcat(colorMatrixConcat, colorMatrixBlue);

  ColorMatrixColorFilter filter = new ColorMatrixColorFilter(
    colorMatrixConcat);
  paint.setColorFilter(filter);
  canvasResult.drawBitmap(src, 0, 0, paint);

  return bitmapResult;
 }
}

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:autoLink="web"
        android:text="http://android-er.blogspot.com/"
        android:textStyle="bold" />

    <Button
        android:id="@+id/loadimage"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Load Image 1" />

    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent" >

        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="vertical" >

            <ImageView
                android:id="@+id/result"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:adjustViewBounds="true"
                android:background="@android:color/background_dark"
                android:scaleType="centerInside" />

            <TextView
                android:id="@+id/textRot"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="ColorMatrix Rotate" />

            <SeekBar
                android:id="@+id/rotbarred"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:max="360"
                android:progress="0" />
            <SeekBar
                android:id="@+id/rotbargreen"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:max="360"
                android:progress="0" />
            <SeekBar
                android:id="@+id/rotbarblue"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:max="360"
                android:progress="0" />
        </LinearLayout>
    </ScrollView>

</LinearLayout>

Download the files.

download files

Download and try the APK.

more: Something about processing images in Android

Scale color and alpha of colormatrix with setScale()

Example of using ColorMatrix.setScale(float rScale, float gScale, float bScale, float aScale).

package com.example.androiddrawbitmap;

import java.io.FileNotFoundException;

import android.net.Uri;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.ColorMatrix;
import android.graphics.ColorMatrixColorFilter;
import android.graphics.Paint;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.TextView;

public class MainActivity extends Activity {

 Button btnLoadImage;
 ImageView imageResult;
 SeekBar scaleBarRed, scaleBarGreen, scaleBarBlue, scaleBarAlpha;
 TextView cmScaleText;

 final int RQS_IMAGE1 = 1;

 Uri source;
 Bitmap bitmapMaster;
 Canvas canvasMaster;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);

  btnLoadImage = (Button) findViewById(R.id.loadimage);
  imageResult = (ImageView) findViewById(R.id.result);

  btnLoadImage.setOnClickListener(new OnClickListener() {

   @Override
   public void onClick(View arg0) {
    Intent intent = new Intent(
      Intent.ACTION_PICK,
      android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
    startActivityForResult(intent, RQS_IMAGE1);
   }
  });

  cmScaleText = (TextView) findViewById(R.id.textCMScale);
  scaleBarRed = (SeekBar) findViewById(R.id.scalebarred);
  scaleBarGreen = (SeekBar) findViewById(R.id.scalebargreen);
  scaleBarBlue = (SeekBar) findViewById(R.id.scalebarblue);
  scaleBarAlpha = (SeekBar) findViewById(R.id.scalebaralpha);
  scaleBarRed.setOnSeekBarChangeListener(seekBarChangeListener);
  scaleBarGreen.setOnSeekBarChangeListener(seekBarChangeListener);
  scaleBarBlue.setOnSeekBarChangeListener(seekBarChangeListener);
  scaleBarAlpha.setOnSeekBarChangeListener(seekBarChangeListener);

 }

 @Override
 protected void onActivityResult(int requestCode, int resultCode, Intent data) {
  super.onActivityResult(requestCode, resultCode, data);

  if (resultCode == RESULT_OK) {
   switch (requestCode) {
   case RQS_IMAGE1:
    source = data.getData();

    try {
     bitmapMaster = BitmapFactory
       .decodeStream(getContentResolver().openInputStream(
         source));

     scaleBarRed.setProgress(100);
     scaleBarGreen.setProgress(100);
     scaleBarBlue.setProgress(100);
     scaleBarAlpha.setProgress(100);

     loadBitmapScaleColor();

    } catch (FileNotFoundException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
    }

    break;
   }
  }
 }

 OnSeekBarChangeListener seekBarChangeListener = 
   new OnSeekBarChangeListener() {

  @Override
  public void onProgressChanged(SeekBar seekBar, int progress,
    boolean fromUser) {
   // TODO Auto-generated method stub

  }

  @Override
  public void onStartTrackingTouch(SeekBar seekBar) {
   // TODO Auto-generated method stub

  }

  @Override
  public void onStopTrackingTouch(SeekBar seekBar) {
   loadBitmapScaleColor();
  }
 };

 private void loadBitmapScaleColor() {
  if (bitmapMaster != null) {

   int progressScaleRed = scaleBarRed.getProgress();
   int progressScaleGreen = scaleBarGreen.getProgress();
   int progressScaleBlue = scaleBarBlue.getProgress();
   int progressScaleAlpha = scaleBarAlpha.getProgress();

   float scaleRed = (float) progressScaleRed/100;
   float scaleGreen = (float) progressScaleGreen/100;
   float scaleBlue = (float) progressScaleBlue/100;
   float scaleAlpha = (float) progressScaleAlpha/100;
   
   cmScaleText.setText("setScale: "
     + String.valueOf(scaleRed) + ", "
     + String.valueOf(scaleGreen) + ", "
     + String.valueOf(scaleBlue) + ", "
     + String.valueOf(scaleAlpha));
   
   Bitmap bitmapColorScaled = updateScale(
     bitmapMaster, 
     scaleRed, 
     scaleGreen, 
     scaleBlue, 
     scaleAlpha);
   
   imageResult.setImageBitmap(bitmapColorScaled);
  }
 }

 private Bitmap updateScale(Bitmap src, float rScale, float gScale, 
   float bScale, float aScale) {

  int w = src.getWidth();
  int h = src.getHeight();

  Bitmap bitmapResult = Bitmap
    .createBitmap(w, h, Bitmap.Config.ARGB_8888);
  Canvas canvasResult = new Canvas(bitmapResult);
  Paint paint = new Paint();
  ColorMatrix colorMatrix = new ColorMatrix();
  colorMatrix.setScale(rScale, gScale, bScale, aScale);
  ColorMatrixColorFilter filter = new ColorMatrixColorFilter(colorMatrix);
  paint.setColorFilter(filter);
  canvasResult.drawBitmap(src, 0, 0, paint);

  return bitmapResult;
 }
}

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:autoLink="web"
        android:text="http://android-er.blogspot.com/"
        android:textStyle="bold" />

    <Button
        android:id="@+id/loadimage"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Load Image 1" />

    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent" >

        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="vertical" >

            <ImageView
                android:id="@+id/result"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:adjustViewBounds="true"
                android:background="@drawable/ic_launcher"
                android:scaleType="centerInside" />

            <TextView
                android:id="@+id/textCMScale"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="ColorMatrix Scale" />

            <SeekBar
                android:id="@+id/scalebarred"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:max="200"
                android:progress="100" />
            <SeekBar
                android:id="@+id/scalebargreen"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:max="200"
                android:progress="100" />
            <SeekBar
                android:id="@+id/scalebarblue"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:max="200"
                android:progress="100" />
            <SeekBar
                android:id="@+id/scalebaralpha"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:max="200"
                android:progress="100" />
        </LinearLayout>
    </ScrollView>

</LinearLayout>

Download the files.

download files

Download and try the APK.

more: Something about processing images in Android

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Built in Memory	4 GB
External Memory	Support Micro Card (Upto 32GB)
Wifi	802.11 b/g/n supported
Blue tooth	N/A
Sim/GSM/CDMA	quad band 850/900/1800/1900Mhz
Camera	Dual camera 0.3 Mega front / Back 2.0 Mega
HDMI /3g Dongle	Support USB 3G Dongle, EVDO/WCDMA
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Source : http://mashable.com/2013/07/24/google-android-43/

Error downloading iOS7 HOW TO FIX .

Apple released the public version of the iOS 7.0 and its a super number of downloads happening , you cannot abuse Apple for the error you are getting while downloading the iOS 7 on your device through the software update section in Settings. Here’s an error which many users have been reporting right now:

What is more annoying here is that you need to start the download once again if the error occurs, and the download doesn’t resume from where it had stopped. Devices like the iPad have got the iOS file of size more than 1 GB, and that is where the issue is happening. The actual error reads:

Software Update Failed

An Error occurred Downloading iOS 7.0

Reason:

The reason for this is only one – Apple’s server is facing a huge load right now and there is nothing else that is causing this error. If there was, the error would have been different, like the Error 3000 which we had explained earlier.

Solution / Fix:

For now, we would suggest you to be patient and wait for a few hours till the Apple servers load gets reduced, and then you would be able to easily download the iOS 7 file, no matter what the size is. The Apple download servers are quite fast most of the time but when any major releases are done, this downtime is a little expected, and you as an end user cannot do anything about it than to wait for the speed to pick up. Just retrying it right now would be a waste of data and time.

We’ll be updating you here as soon as we see the Apple servers picking up speed and not showing an error (we did install iOS 7 on an iPad Mini but the iPhone shows the error as mentioned above), so we too would be trying the download and then can get an idea when the download can happen without a hassle.

If at all you wanted to download the iOS 7 IPSW files, go to the following links based on the device:

how to install IOS 7 on iPhone 4 ,4s,5

How to install IOS 7 on iPhone 4 ,4s,5

You should always perform a backup before applying any major new firmware release. If you back up your devices to iCloud or sync with iTunes via Wi-Fi, temporarily disable both options.

To disable iCloud backup, toggle the iCloud Backup switch to OFF under iOS Settings > iCloud > Storage & Backup. To disable iTunes Wi-Fi sync, tether the device to a Mac or PC via a USB cable and uncheck the “Sync with this iPhone over Wi-Fi” box under your device’s Summary tab in iTunes.

Make sure you’re running the most up-to-date version of iTunes (you should only download the latest version of iTunes from Apple’s website). Fire up the program and choose your device in the upper right part of the iTunes window. Should iTunes warn you there’s a new version of iPhone firmware update available, just cancel the prompt.

Click on the device’s name in the upper-right part of the iTunes window, navigate to the Summary tab and hit the “Back Up Now”. Fix yourself a cup of coffee as creating a backup on your computer may take a while, depending on its contents and storage capacity.

While we’re at it, update your iOS apps by going to the Updates tab in the iTunes Apps section. Now’s also a good time to copy the device backup file to an external drive (PC) or initiate a manual Time Capsule backup. To do the latter, just choose Back Up Now from your Mac’s menu bar. If you don’t see the option, tick the “Show Time Machine in menu bar” box in System Preferences > Time Machine.

To see where iTunes stores iOS device backup files on your computer, choose Preferences from the iTunes menu and navigate to the Devices tab. In case you were wondering, iOS backups keep all your app data and settings, sans your media and apps themselves because these items already exist in iTunes/iCloud.

Keeping a device backup on your computer is not only a precautionary measure, it’ll also speed up restoring your device should you encounter any issues – as opposed to restoring from an iCloud backup.

You’re now ready to install iOS 7: hit the Restore iPhone button in iTunes and wait until the software downloads and verifies the latest iOS 7 build with iOSDownload.

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This version suits to C93A model with barcode C93A-xxx-8GB-

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Using TF card

First extract the firmware which you get or download, then copy the whole "zt-update" directory into the root directory of TF card.
Put the TF card into TF card slot, then press the "Back" button at the same time to press the power-on button, then operate as per the reminders shown on the screen, the machine will be installed the firmware and then reboot.

Note: keep charged when the machine is being installed the firmware. Please hold the "Back" and Power-on button for at least 5 seconds.

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C71A (7"+8GB) Android4.1 2013-06-15 V1.3 With HDMI

This version suits to C71A model with barcode C71A-H-8GB-

xxxxxx and HDMI port.

Using TF card

First extract the firmware which you get or download, then copy the whole "zt-update" directory into the root directory of TF card.
Shutdown your tablet and put the TF card into TF card slot, then hold the power-on button for 5-10 seconds, then you will see Upgrading logo, the machine will be installed the firmware and then reboot automatically.

Note: keep charged when the machine is being installed the firmware.

Please do remember to take your TF card out after upgrading because this version include the automatical script file.

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This version suits to C71A model with barcode C71A-B-8GB-xxxxxx.

Using TF card

First extract the firmware which you get or download, then copy the whole "zt-update" directory into the root directory of TF card.
Shutdown your tablet and put the TF card into TF card slot, then hold the power-on button for 5-10 seconds, then you will see Upgrading logo, the machine will be installed the firmware and then reboot automatically.

Note: keep charged when the machine is being installed the firmware.

Please do remember to take your TF card out after upgrading because this version include the automatical script file.

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When I need to Restore or Reset my Android Tablet ?

Custom Rom's for Samsung GT-19100 Galaxy S2

Error downloading iOS7 HOW TO FIX .

How to install IOS 7 on iPhone 4 ,4s,5

This version suits to C93A model with barcode C93A-xxx-8GB-

ZNSxxx-xx

This version suits to C71A model with barcode C71A-H-8GB-

xxxxxx and HDMI port.

This version suits to C71A model with barcode C71A-B-8GB-xxxxxx.

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