granoeste

System directories

Method	Result
Environment.getDataDirectory()	/data
Environment.getDownloadCacheDirectory()	/cache
Environment.getRootDirectory()	/system

External storage directories

rxaviers

People

:bowtie:	😄 :smile:	😆 :laughing:
😊 :blush:	😃 :smiley:	☺️ :relaxed:
😏 :smirk:	😍 :heart_eyes:	😘 :kissing_heart:
😚 :kissing_closed_eyes:	😳 :flushed:	😌 :relieved:
😆 :satisfied:	😁 :grin:	😉 :wink:
😜 :stuck_out_tongue_winking_eye:	😝 :stuck_out_tongue_closed_eyes:	😀 :grinning:
😗 :kissing:	😙 :kissing_smiling_eyes:	😛 :stuck_out_tongue:

boxme

Unless specified otherwise, all of the below tinting applies to both Lollipop and pre-Lollipop using AppCompat v21. 
To use the support version of these attributes, remove the android namespace.  

For instance, "android:colorControlNormal" becomes "colorControlNormal".  

These attributes will be propagated to their corresponding attributes within the android namespace 
for devices running Lollipop.  Any exceptions to this will be noted by including the "android:" prefix.
 
All Clickable Views:
-----------

ryanamaral

/**
 * ItemDecoration implementation for equal padding between the list items except first and last items.
 * @author Ryan Amaral
 * @version 1.0
 */
public class PaddingItemDecoration extends RecyclerView.ItemDecoration {

    private int mPaddingPx;
    private int mPaddingEdgesPx;

yqritc

ItemOffsetDecoration

public class ItemOffsetDecoration extends RecyclerView.ItemDecoration {

    private int mItemOffset;

    public ItemOffsetDecoration(int itemOffset) {
        mItemOffset = itemOffset;
    }

cesarferreira

View Click

Instead of the verbose setOnClickListener:

RxView.clicks(submitButton).subscribe(o -> log("submit button clicked!"));

Filter even numbers

Observable
    .just(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)

mcelotti

Nav flow is: A => B => C => A with results from C
If you're using fragments please note that "onActivityResult" will be called according to where "startActivityForResult" is called (method "startActivityForResult" is available in both, activity and fragment)

ActivityA
   startActivityForResult(intentB, 22);

ActivityB
   intentC.addFlags(Intent.FLAG_ACTIVITY_FORWARD_RESULT);
   startActivity(intentC);
   finish();

lopspower

Hexadecimal color code for transparency

How to set transparency with hex value ?

For example, you want to set 40% alpha transparence to #000000 (black color), you need to add 66 like this #66000000.

All hex value from 100% to 0% alpha:

iChintanSoni

import android.content.Context;
import android.content.SharedPreferences;

public class SharedPreferenceUtils {
    private static SharedPreferenceUtils mSharedPreferenceUtils;
    protected Context mContext;
    private SharedPreferences mSharedPreferences;
    private SharedPreferences.Editor mSharedPreferencesEditor;

    private SharedPreferenceUtils(Context context) {

Antarix

import android.content.Context;
import android.content.Intent;
import android.support.v4.content.WakefulBroadcastReceiver;
import android.util.Log;

/**
 * This is called whenever app receives notification
 * in background/foreground state so you can
 * apply logic for background task, but still Firebase notification
 * will be shown in notification tray