Bramengton

Одна из самых раздражающих недоработок Android проявляется когда нужно из фрагмента получить 
изображение с камеры или выбрать из готовых. 
Для этого используется Fragment.startActivityForResult(), а результат приходит в Fragment.onActivityResult(). 
Всё бы хорошо, но если фрагмент является потомком другого фрагмента, onActivityResult() не вызывается. 
Решается не очень тривиально:
startActivityForResult() вызываем не для текущего фрагмента, а для родителя:

private Fragment getActivityStarterFragment() {
        if (getParentFragment() != null) {
            return getParentFragment();

Bramengton

LTR We will send an SMS with a confirmation code to your phone number: %s
On screen: We will send an SMS with a confirmation code to your phone number: +380123456789
RTL \u202Cאנו נשלח הודעת SMS עם קוד אישור למספר הטלפון שלך:\u202A %s

You can embed bidi regions using unicode format control codepoints:

Left-to-right embedding (U+202A)
Right-to-left embedding (U+202B)
Pop directional formatting (U+202C)
So in java, to embed a RTL language like Arabic in an LTR language like English, you would do

Bramengton

#####Logcat Colors for IntelliJ Darcula Theme ([original post](http://stackoverflow.com/questions/19933731/colored-logcat-in-android-studio-by-colorpid))

- Preferences -> Editor -> Android Logcat
- "Save As" scheme 
- Uncheck "Use inherited attributes" option
- Edit foreground color with the following

```
Debug   : #E5AD06 
Info    : #8AF990 

Bramengton

import android.os.Environment;
import android.support.annotation.NonNull;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.concurrent.TimeUnit;

Bramengton

class VideoDownloader extends AsyncTask<Void, Long, Boolean> {

        @Override
        protected void onPreExecute() {
            super.onPreExecute();
        }

        @Override
        protected Boolean doInBackground(Void... params) {

Bramengton

As Dave Webb mentions, the Android Developer Blog has an article that covers this. Their preferred solution is to track app installs rather than devices, and that will work well for most use cases. The blog post will show you the necessary code to make that work, and I recommend you check it out.

However, the blog post goes on to discuss solutions if you need a device identifier rather than an app installation identifier. I spoke with someone at Google to get some additional clarification on a few items in the event that you need to do so. Here's what I discovered about device identifiers that's NOT mentioned in the aforementioned blog post:

ANDROID_ID is the preferred device identifier. ANDROID_ID is perfectly reliable on versions of Android <=2.1 or >=2.3. Only 2.2 has the problems mentioned in the post.
Several devices by several manufacturers are affected by the ANDROID_ID bug in 2.2.
As far as I've been able to determine, all affected devices have the same ANDROID_ID, which is 9774d56d682e549c. Which i

Bramengton

There is a work-around to get the Mac address in Android 6.0.

First you need to add Internet user permission.

<uses-permission android:name="android.permission.INTERNET" />
Then you can find the mac over the NetworkInterfaces API.

public static String getMacAddr() {
    try {
        List<NetworkInterface> all = Collections.list(NetworkInterface.getNetworkInterfaces());

Bramengton

[Desktop Entry]
Encoding=UTF-8
Name=Postman
Exec=postman
Icon=/opt/Postman/resources/app/assets/icon.png
Terminal=false
Type=Application
Categories=Development;

Bramengton

import android.content.ActivityNotFoundException;
import android.content.Context;
import android.content.ContextWrapper;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.util.Log;

import org.json.JSONArray;
import org.json.JSONException;

Bramengton

CoordinatorLayout.LayoutParams params = (CoordinatorLayout.LayoutParams) mAppBarLayout.getLayoutParams();
AppBarLayout.Behavior behavior = new AppBarLayout.Behavior();
behavior.setDragCallback(new AppBarLayout.Behavior.DragCallback() {
    @Override
    public boolean canDrag(@NonNull AppBarLayout appBarLayout) {
        return false;
    }
});
params.setBehavior(behavior);