Latest Posts

OkHttp Post Body as JSON

Posted on August 15, 2018 by Mahmood

public static final MediaType JSON
    = MediaType.parse("application/json; charset=utf-8");

OkHttpClient client = new OkHttpClient();

String post(String url, String json) throws IOException {
  RequestBody body = RequestBody.create(JSON, json);
  Request request = new Request.Builder()
      .url(url)
      .post(body)
      .build();
  Response response = client.newCall(request).execute();
  return response.body().string();
}

public static final MediaType JSON

= MediaType.parse("application/json; charset=utf-8");

OkHttpClient client = new OkHttpClient();

String post(String url, String json) throws IOException {

RequestBody body = RequestBody.create(JSON, json);

Request request = new Request.Builder()

.url(url)

.post(body)

.build();

Response response = client.newCall(request).execute();

return response.body().string();

}

References https://stackoverflow.com/questions/34179922/okhttp-post-body-as-json

Uncategorized

Android Studio – No space left on device

Posted on August 13, 2018 by Mahmood

Solution – temporarily increase the size of the /tmp partition:

sudo mount -o remount,size=8G,noatime /tmp;

1	sudo mount -o remount,size=8G,noatime /tmp;

References https://bytefreaks.net/applications/android-studio-no-space-left-on-device

Uncategorized

Detect screen rotation on Android

Posted on August 13, 2018 by Mahmood

Manifest:

<activity android:name=".MyActivity" android:configChanges="screenSize|orientation|screenLayout|navigation"/>

1	<activity android:name=".MyActivity" android:configChanges="screenSize\|orientation\|screenLayout\|navigation"/>

Activity:

@Override
public void onConfigurationChanged(Configuration newConfig)
{
    Log.d("tag", "config changed");
    super.onConfigurationChanged(newConfig);

    int orientation = newConfig.orientation;
    if (orientation == Configuration.ORIENTATION_PORTRAIT)
        Log.d("tag", "Portrait");
    else if (orientation == Configuration.ORIENTATION_LANDSCAPE)
        Log.d("tag", "Landscape");
    else
        Log.w("tag", "other: " + orientation);

    ....
}

@Override

public void onConfigurationChanged(Configuration newConfig)

{

Log.d("tag", "config changed");

super.onConfigurationChanged(newConfig);

int orientation = newConfig.orientation;

if (orientation == Configuration.ORIENTATION_PORTRAIT)

Log.d("tag", "Portrait");

else if (orientation == Configuration.ORIENTATION_LANDSCAPE)

Log.d("tag", "Landscape");

else

Log.w("tag", "other: " + orientation);

....

}

References https://stackoverflow.com/questions/6896243/how-can-i-detect-screen-rotation

Uncategorized

Show Progress bar while loading image using Glide

Posted on August 13, 2018 by Mahmood

Glide.with(this)
            .load("https://raw.githubusercontent.com/bumptech/glide/master/static/glide_logo.png")
            .listener(new RequestListener<Drawable>() {
                @Override
                public boolean onLoadFailed(@Nullable GlideException e, Object model, Target<Drawable> target, boolean isFirstResource) {
                    progressBar.setVisibility(View.GONE);
                    return false;
                }

                @Override
                public boolean onResourceReady(Drawable resource, Object model, Target<Drawable> target, DataSource dataSource, boolean isFirstResource) {
                    progressBar.setVisibility(View.GONE);
                    return false;
                }
            })
            .into(imageView);

Glide.with(this)

.load("https://raw.githubusercontent.com/bumptech/glide/master/static/glide_logo.png")

.listener(new RequestListener<Drawable>() {

@Override

public boolean onLoadFailed(@Nullable GlideException e, Object model, Target<Drawable> target, boolean isFirstResource) {

progressBar.setVisibility(View.GONE);

return false;

}

@Override

public boolean onResourceReady(Drawable resource, Object model, Target<Drawable> target, DataSource dataSource, boolean isFirstResource) {

progressBar.setVisibility(View.GONE);

return false;

}

})

.into(imageView);

References https://stackoverflow.com/questions/35305875/progress-bar-while-loading-image-using-glide

Uncategorized

Building a Url with Query parameters in OkHttp

Posted on August 13, 2018 by Mahmood

HttpUrl url = new HttpUrl.Builder()
    .scheme("https")
    .host("www.google.com")
    .addPathSegment("search")
    .addQueryParameter("q", "polar bears")
    .build();

HttpUrl url = new HttpUrl.Builder()

.scheme("https")

.host("www.google.com")

.addPathSegment("search")

.addQueryParameter("q", "polar bears")

.build();

References https://medium.com/square-corner-blog/okhttps-new-url-class-515460eea661

Uncategorized

Detect if App is in release or debug mode in android

Posted on August 6, 2018 by Mahmood

Make sure you are referencing your project’s BuildConfig class, not from any of your dependency libraries.

if (BuildConfig.DEBUG) {
  // do something for a debug build
}

if (BuildConfig.DEBUG) {

// do something for a debug build

}

release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
            debuggable false
        }
        debug {
            debuggable true
        }

release {

minifyEnabled false

proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'

debuggable false

}

debug {

debuggable true

}

References https://stackoverflow.com/questions/23844667/detect-if-i-am-in-release-or-debug-mode-in-android http://tekeye.uk/android/examples/android-debug-vs-release-build

Uncategorized

Track android fragments using firebase analytics

Posted on August 3, 2018 by Mahmood

mFirebaseAnalytics.setCurrentScreen(this, fragment.getClass().getSimpleName(), fragment.getClass().getSimpleName());

1	mFirebaseAnalytics.setCurrentScreen(this, fragment.getClass().getSimpleName(), fragment.getClass().getSimpleName());

References https://stackoverflow.com/questions/45201346/how-to-track-android-fragments-using-firebase-analytics

Uncategorized

Change ticks number on a plot in matplotlib

Posted on August 1, 2018 by Mahmood

# Create your ticker object with M ticks
M = 3
yticks = ticker.MaxNLocator(M)

# Set the yaxis major locator using your ticker object. You can also choose the minor
# tick positions with set_minor_locator.
ax.yaxis.set_major_locator(yticks)

# Create your ticker object with M ticks

M = 3

yticks = ticker.MaxNLocator(M)

# Set the yaxis major locator using your ticker object. You can also choose the minor

# tick positions with set_minor_locator.

ax.yaxis.set_major_locator(yticks)

References https://stackoverflow.com/questions/27425974/change-ticks-number-on-a-subplot

Uncategorized

Download image from url in C#

Posted on July 30, 2018 by Mahmood

Simply You can use following methods.

using (WebClient client = new WebClient()) 
  {
    client.DownloadFile(new Uri(url), @"c:\temp\image35.png");

     //OR 

    client.DownloadFileAsync(new Uri(url), @"c:\temp\image35.png");
   }

using (WebClient client = new WebClient())

{

client.DownloadFile(new Uri(url), @"c:\temp\image35.png");

//OR

client.DownloadFileAsync(new Uri(url), @"c:\temp\image35.png");

}

If You don’t know the Format(.png, .jpeg etc) of Image

public void SaveImage(string filename, ImageFormat format) {

    WebClient client = new WebClient();
    Stream stream = client.OpenRead(imageUrl);
    Bitmap bitmap;  bitmap = new Bitmap(stream);

    if (bitmap != null) 
      bitmap.Save(filename, format);

    stream.Flush();
    stream.Close();
    client.Dispose();
}

public void SaveImage(string filename, ImageFormat format) {

WebClient client = new WebClient();

Stream stream = client.OpenRead(imageUrl);

Bitmap bitmap; bitmap = new Bitmap(stream);

if (bitmap != null)

bitmap.Save(filename, format);

stream.Flush();

stream.Close();

client.Dispose();

}

References https://stackoverflow.com/questions/24797485/how-to-download-image-from-url

Uncategorized

Creating a temporary directory in Windows using C#

Posted on July 30, 2018 by Mahmood

public string GetTemporaryDirectory()
{
   string tempDirectory = Path.Combine(Path.GetTempPath(), Path.GetRandomFileName());
   Directory.CreateDirectory(tempDirectory);
   return tempDirectory;
}

public string GetTemporaryDirectory()

{

string tempDirectory = Path.Combine(Path.GetTempPath(), Path.GetRandomFileName());

Directory.CreateDirectory(tempDirectory);

return tempDirectory;

}

References https://stackoverflow.com/questions/278439/creating-a-temporary-directory-in-windows

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