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 public class MyParcelable implements Parcelable {
     private int mData;

     public int describeContents() {
         return 0;
     }

     public void writeToParcel(Parcel out, int flags) {
         out.writeInt(mData);
     }

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Java Keytool Commands for Creating and Importing

These commands allow you to generate a new Java Keytool keystore file, create a CSR, and import certificates. Any root or intermediate certificates will need to be imported before importing the primary certificate for your domain.

Generate a Java keystore and key pair

keytool -genkey -alias mydomain -keyalg RSA -keystore keystore.jks -keysize 2048

Generate a certificate signing request (CSR) for an existing Java keystore

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  // Add code to print out the key hash
  try {
    PackageInfo info = getPackageManager().getPackageInfo(
            "yourpackage.name",
            PackageManager.GET_SIGNATURES);
    for (Signature signature : info.signatures) {
        MessageDigest md = MessageDigest.getInstance("SHA");
        md.update(signature.toByteArray());
        Log.d("KeyHash:", Base64.encodeToString(md.digest(), Base64.DEFAULT));
    }

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Type mapType = new TypeToken<Map<String, String>>(){}.getType();
Map<String, String> errorResponse = new Gson().fromJson(json, mapType);

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// Replace 'dependencies' in your build.gradle file with the following 
// or add these to whatever other dependencies you have.

dependencies {
    compile 'com.android.support:support-v4:13.0.+'
    compile 'com.google.android.gms:play-services:3.1.36+'
    compile('com.google.api-client:google-api-client:1.4.1-beta') {
        exclude group: 'com.google.android.google-play-services'
    }
    compile 'com.google.http-client:google-http-client-gson:1.15.0-rc'

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//Link reference https://github.com/nbadal/android-gif-encoder
public byte[] generateGIF() {
    ArrayList<Bitmap> bitmaps = adapter.getBitmapArray();
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    AnimatedGifEncoder encoder = new AnimatedGifEncoder();
    encoder.start(bos);
    for (Bitmap bitmap : bitmaps) {
        encoder.addFrame(bitmap);
    }
    encoder.finish();

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buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:0.6.+'
    }
}

apply plugin: 'android-library'

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$ javah -d jni -classpath /Applications/Android\ Studio.app/sdk/platforms/android-19/android.jar:../../build/intermediates/classes/debug com.namlh.ndkexample.MainActivity

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 public static final int dpToPx(float dp, Resources res) {
    return (int) TypedValue.applyDimension(
        TypedValue.COMPLEX_UNIT_DIP,
        dp,
        res.getDisplayMetrics());
  }

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Intent galleryIntent = new Intent(Intent.ACTION_PICK,android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
galleryIntent.setType("image/*");
galleryIntent.putExtra("crop", "true");
galleryIntent.putExtra(MediaStore.EXTRA_OUTPUT, getTempUri());
galleryIntent.putExtra("aspectX", 1);
galleryIntent.putExtra("aspectY", 1);
galleryIntent.putExtra("outputX", 512);
galleryIntent.putExtra("outputY", 512);
galleryIntent.putExtra("scaleUpIfNeeded", true);
galleryIntent.putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString());