syuan syuan

## Thread priority.java
Process.setThreadPriority(Process.THREAD_PRIORITY_BACKGROUND);

## Util.java
private static int blendColors(int from, int to, float ratio) {
	final float inverseRation = 1f - ratio;
	final float r = Color.red(from) * ratio + Color.red(to) * inverseRation;
	final float g = Color.green(from) * ratio + Color.green(to) * inverseRation;
	final float b = Color.blue(from) * ratio + Color.blue(to) * inverseRation;
	return Color.rgb((int) r, (int) g, (int) b);
}

## How to check debug build variant in Android (ADT 17+).java
if (BuildConfig.DEBUG) {
	....
}

## How to set state_selected in ripple drawable (Support Library).xml
"@style/Widget.AppCompat.Button.Colored"

## ScrollingViewBehavior for ListView (Support Library).java
ViewCompat.setNestedScrollingEnabled(listView, true);

## How to get fingerprint of keystore certificate(SHA).java
public static String getKeyHash(final Context context) {
    PackageInfo packageInfo = getPackageInfo(context, PackageManager.GET_SIGNATURES);
    if (packageInfo == null)
        return null;

    for (Signature signature : packageInfo.signatures) {
        try {
            MessageDigest md = MessageDigest.getInstance("SHA");
            md.update(signature.toByteArray());
            return Base64.encodeToString(md.digest(), Base64.NO_WRAP);

## Cookie clear.java
@SuppressWarnings("deprecation")
public static void clearSessionCookies(Context context) {
   if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP_MR1) {
      CookieManager.getInstance().removeSessionCookies(null);
      CookieManager.getInstance().flush();
   } else {
      CookieSyncManager cookieSyncManager = CookieSyncManager.createInstance(context);
      cookieSyncManager.startSync();
      CookieManager cookieManager = CookieManager.getInstance();
      cookieManager.removeSessionCookie();

## Remove shadow below actionbar on Android 5.0+.xml
<item name="elevation">0dp</item>
	private static int blendColors(int from, int to, float ratio) {
	final float inverseRation = 1f - ratio;
	final float r = Color.red(from) * ratio + Color.red(to) * inverseRation;
	final float g = Color.green(from) * ratio + Color.green(to) * inverseRation;
	final float b = Color.blue(from) * ratio + Color.blue(to) * inverseRation;
	return Color.rgb((int) r, (int) g, (int) b);
	}
	public static String getKeyHash(final Context context) {
	PackageInfo packageInfo = getPackageInfo(context, PackageManager.GET_SIGNATURES);
	if (packageInfo == null)
	return null;

	for (Signature signature : packageInfo.signatures) {
	try {
	MessageDigest md = MessageDigest.getInstance("SHA");
	md.update(signature.toByteArray());
	return Base64.encodeToString(md.digest(), Base64.NO_WRAP);