AbreuY

public void loadFiles(){
        new Thread(
                new Runnable() {
                    @Override
                    public void run() {
                        final Activity activity = getActivity();
                        if(activity != null && isAdded()){
                            activity.runOnUiThread(new Runnable() {
                                @Override
                                public void run() {

AbreuY

package com.example.fconfig;

import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.TextView;

import com.google.android.gms.tasks.OnCompleteListener;

AbreuY

import android.graphics.Rect;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;

public class EqualSpacingItemDecoration extends RecyclerView.ItemDecoration {
  private final int spacing;
  private int displayMode;

  public static final int HORIZONTAL = 0;

AbreuY

String sdCardPath = null;

		if (storageState.equals(Environment.MEDIA_MOUNTED)) {
			sdCardPath = Environment.getExternalStorageDirectory().getAbsolutePath();
		} else {
			List<String> possiblePaths = new ArrayList<String>();
			possiblePaths.add("/storage/sdcard1 "); //!< Motorola Xoom
			possiblePaths.add("/storage/extsdcard "); //!< Samsung SGS3
			possiblePaths.add("/storage/sdcard0/external_sdcard");  // user request
			possiblePaths.add("/mnt/extsdcard");

AbreuY

	private String getSdcardFolder() {
		File externalStorage = Environment.getExternalStorageDirectory();
		if (externalStorage.exists() && externalStorage.canWrite()) {
			File trySubDir1 = new File(externalStorage, "external_sd");
			File trySubDir2 = new File(externalStorage, "sd");
			if (trySubDir1.exists() && trySubDir1.canWrite()) {
				return trySubDir1.getAbsolutePath();
			} else if (trySubDir2.exists() && trySubDir2.canWrite()) {
				return trySubDir2.getAbsolutePath();
			} else {

AbreuY

System directories

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

External storage directories

AbreuY

public static String getExternalSdCardPath() {
        String path = null;
        
        File sdCardFile = null;
        List<String> sdCardPossiblePath = Arrays.asList("external_sd", "ext_sd", "external", "extSdCard");
        
        for (String sdPath : sdCardPossiblePath) {
                File file = new File("/mnt/", sdPath);
                
                if (file.isDirectory() && file.canWrite()) {

AbreuY

@SuppressLint("SourceLockedOrientationActivity")
	public static void chequeaVersion(Activity activity){
      //Verifica si es diferente de android O 
		if (android.os.Build.VERSION.SDK_INT != Build.VERSION_CODES.O){
			activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
			Log.d("TAG", "No es android O");
		}else{
			activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
      Log.d("TAG", "Es android O");
		}

AbreuY

// Extension on intent

fun Intent?.getFilePath(context: Context): String {
    return this?.data?.let { data -> RealPathUtil.getRealPath(context, data) ?: "" } ?: ""
}

fun Uri?.getFilePath(context: Context): String {
    return this?.let { uri -> RealPathUtil.getRealPath(context, uri) ?: "" } ?: ""
}

AbreuY

 public static String[] getStorageDirectories() {
          final Pattern DIR_SEPARATOR = Pattern.compile("/");

        // Final set of paths
        final Set<String> rv = new HashSet<String>();
        // Primary physical SD-CARD (not emulated)
        final String rawExternalStorage = System.getenv("EXTERNAL_STORAGE");
        // All Secondary SD-CARDs (all exclude primary) separated by ":"
        final String rawSecondaryStoragesStr = System.getenv("SECONDARY_STORAGE");
        // Primary emulated SD-CARD