public static byte[] convertBitmapToByteArray(Bitmap bitmap) {
if (bitmap == null) {
return null;
} else {
byte[] b = null;
try {
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
bitmap.compress(CompressFormat.PNG, 0, byteArrayOutputStream);
b = byteArrayOutputStream.toByteArray();
} catch (Exception e) {
e.printStackTrace();
...
Thursday, April 23, 2015
April 23, 2015
Bitmap to ByteArray Android
Wednesday, April 22, 2015
April 22, 2015
ARC forbids explicit message send of 'release'
ARC forbids explicit message send of 'release'
ARC is an automatic reference counting. Here no need to release memory manually, ARC will release automatically.
Its a compiler feature that , it uses automatic memory management of objective c object...
Sunday, April 19, 2015
April 19, 2015
Error in manifest android:debuggable="true"
Avoid hardcoding the debug mode; leaving it out allows debug and release builds to automatically assign
one
I added this for android manifest,
android:debuggable="true"
I got solved by cleaning the project. Now i am able to debug.
...
Thursday, April 16, 2015
April 16, 2015
Image Processing
What is an image ?
Image is collection of pixels.
Types of images:
1. Grey scale image
2. Binary Image
3. Coloured Image
Image Processing is image and processing.
Applying the image modification techniques like converting into grey scale image, detecting the pixel density etc.....
April 16, 2015
OpenCv tutorial
Open Source Computer Vision (OpenCV) - Four Modules are there.
CV - Main OpenCV functions, image processing and vision algorithms.
CVAUX - Experimental OpenCv functions.
CXCORE -Data structure support and other algorithms.
HIGHGUI : Graphical User Interface functions , image and video.
...
Wednesday, April 15, 2015
April 15, 2015
Fatal signal 11 (SIGSEGV) at 0x3b0dcef0 (code=1)
Fatal signal 11 (SIGSEGV) at 0x3b0dcef0 (code=1), thread 973
Send stop signal to pid:973 in void debuggerd_signal_handler(int, siginfo_t*, void*)
...
April 15, 2015
!!! FAILED BINDER TRANSACTION !!!
!!! FAILED BINDER TRANSACTION !!!
I got this issue while transferring large bitmap data.
intent.putExtra("imagedata", data);
To resolve this issue, avoid transferring of large bitmaps.
The binder transaction failed due to large size.During remote procedure call, arguments and the returned value of call transferred as Parcel objects stored under the binder transaction buffer. If the...
Friday, April 10, 2015
April 10, 2015
java.lang.UnsatisfiedLinkError Android NDK
04-10 14:49:35.505: E/AndroidRuntime(14206): java.lang.UnsatisfiedLinkError: Native method not found: com.permadi.testjni.TestJNIActivity.stringFromJNICPP:()Ljava/lang/String;
04-10 14:49:35.505: E/AndroidRuntime(14206): at com.permadi.testjni.TestJNIActivity.stringFromJNICPP(Native Method)
04-10 14:49:35.505: E/AndroidRuntime(14206): at com.permadi.testjni.TestJNIActivity.onCreate(TestJNIActivity.java:18)
04-10...
April 10, 2015
Android NDK Hello World
TestJNIActivity.java
package com.permadi.testjni;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;
public class TestJNIActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_test_jni);
...
