Database Users

[TOOL] SBCalc - Generate your SBK (v1.1)

Hey there,
Since i had many requests about SBK because i had to stop my webserver, i decided to write a small Windows tool to generate easilly your SBK if you already have your CPUID. (Infos about getting your CPUID -> http://forum.xda-developers.com/showthread.php?t=1624645)
Easy to use :
Extract both exe and dll in the same folder.
Launch SBCalc.exe, type your CPUID, clic "Generate", and it will return your SBK.
Update :
v1.1 : Support 15 or 16 digits for CPUID
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

vache said:
Hey there,
Since i had many requests about SBK because i had to stop my webserver, i decided to write a small Windows tool to generate easilly your SBK if you already have your CPUID. (Infos about getting your CPUID -> http://forum.xda-developers.com/showthread.php?t=1624645)]
Click to expand...
Click to collapse
You're the man (or woman, sorry, I don't actually know you)! TY much!

Hi Guy,
Thanks for this great tool !
Cheers.
vache said:
Hey there,
Since i had many requests about SBK because i had to stop my webserver, i decided to write a small Windows tool to generate easilly your SBK if you already have your CPUID. (Infos about getting your CPUID -> http://forum.xda-developers.com/showthread.php?t=1624645)
Easy to use :
Extract both exe and dll in the same folder.
Launch SBCalc.exe, type your CPUID, clic "Generate", and it will return your SBK.
Click to expand...
Click to collapse

For Linux fans, the following piece of code (adapted from Skrilax_CZ's boot menu) seems to work too:
Code:
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#include <arpa/inet.h>
int
main (int argc, char *argv[])
{
char uid[16], *p;
uint32_t sbk[4];
int i, j, mult;
while (--argc)
{
p = argv[argc];
if (p[0] == '0' && p[1] == 'x')
p += 2;
if (strlen (p) != 16)
continue;
strncpy (uid, p + 8, 8);
strncpy (uid + 8, p, 8);
for (i = 0; i < 16; i++)
uid[i] = toupper (uid[i]);
memset (sbk, 0, sizeof (sbk));
for (i = 0; i < 4; i++)
{
sbk[i] = 0;
mult = 1;
for (j = 3; j >= 0; j--)
{
sbk[i] += uid[4*i+j] * mult;
mult *= 100;
}
}
for (i = 0; i < 4; i++)
sbk[i] ^= sbk[3 - i];
printf ("0x%08X 0x%08X 0x%08X 0x%08X\n",
htonl (sbk[0]), htonl (sbk[1]), htonl (sbk[2]), htonl (sbk[3]));
}
exit (0);
}
Same thing in Perl:
Code:
#! /usr/bin/perl
sub chunk
{
my ($mult, $res);
$mult = 1;
$res = 0;
for (reverse unpack 'C4', uc shift)
{
$res += $_ * $mult;
$mult *= 100;
}
$res;
}
for (@ARGV)
{
my (@sbk, $i);
s/^0x//;
next
if (! m/^[[:xdigit:]]{16}$/);
@sbk = map { chunk $_ } unpack 'x8 (A4)4', $_ . $_;
for ($i = 0; $i < @sbk; $i++)
{ $sbk[$i] ^= $sbk[-$i-1]; }
@sbk = map { unpack 'N', pack 'L', $_ } @sbk;
print +(join ' ', map { sprintf '0x%08X', $_ } @sbk), "\n";
}

Yes, I reverse engineered the SBK generating function in Pica_Func.dll, no need to use it anymore.

lcd047 said:
For Linux fans, the following piece of code (adapted from Skrilax_CZ's boot menu) seems to work too:
Code:
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
uint32_t
swab32 (uint32_t src)
{
uint32_t dst;
int i;
dst = 0;
for (i = 0; i < 4; i++)
{
dst = (dst << 8) + (src & 0xFF);
src >>= 8;
}
return dst;
}
int
main (int argc, char *argv[])
{
char uid[16], *p;
uint32_t sbk[4];
int i, j, mult;
while (--argc)
{
p = argv[argc];
if (p[0] == '0' && p[1] == 'x')
p += 2;
if (strlen (p) != 16)
continue;
strncpy (uid, p + 8, 8);
strncpy (uid + 8, p, 8);
for (i = 0; i < 16; i++)
uid[i] = toupper (uid[i]);
memset (sbk, 0, sizeof (sbk));
for (i = 0; i < 4; i++)
{
sbk[i] = 0;
mult = 1;
for (j = 3; j >= 0; j--)
{
sbk[i] += uid[4*i+j] * mult;
mult *= 100;
}
}
for (i = 0; i < 4; i++)
sbk[i] ^= sbk[3 - i];
printf ("0x%08X 0x%08X 0x%08X 0x%08X\n",
swab32 (sbk[0]), swab32 (sbk[1]), swab32 (sbk[2]), swab32 (sbk[3]));
}
exit (0);
}
Same thing in Perl:
Code:
#! /usr/bin/perl
sub chunk
{
my ($mult, $res);
$mult = 1;
$res = 0;
for (reverse unpack 'C4', uc shift)
{
$res += $_ * $mult;
$mult *= 100;
}
$res;
}
for (@ARGV)
{
my (@sbk, $i);
s/^0x//;
next
if (! m/^[[:xdigit:]]{16}$/);
@sbk = map { chunk $_ } unpack 'x8 (A4)4', $_ . $_;
for ($i = 0; $i < @sbk; $i++)
{ $sbk[$i] ^= $sbk[-$i-1]; }
@sbk = map { unpack 'N', pack 'V', $_ } @sbk;
print +(join ' ', map { sprintf '0x%08X', $_ } @sbk), "\n";
}
Click to expand...
Click to collapse
Thanks so much for the Perl code! You can see it in action at my new SBK Calculator site: http://a500bootloaderflash.tk/sbkcalc/
I hope you don't mind me using it in the true spirit of Open Source!

blackthund3r said:
Thanks so much for the Perl code! You can see it in action at my new SBK Calculator site: http://a500bootloaderflash.tk/sbkcalc/
I hope you don't mind me using it in the true spirit of Open Source!
Click to expand...
Click to collapse
By all means, I posted it for people to use it.

lcd047 said:
By all means, I posted it for people to use it.
Click to expand...
Click to collapse
Thank you!

Thank you Vache! Works great!
vache said:
Hey there,
Since i had many requests about SBK because i had to stop my webserver, i decided to write a small Windows tool to generate easilly your SBK if you already have your CPUID. (Infos about getting your CPUID -> http://forum.xda-developers.com/showthread.php?t=1624645)
Easy to use :
Extract both exe and dll in the same folder.
Launch SBCalc.exe, type your CPUID, clic "Generate", and it will return your SBK.
Click to expand...
Click to collapse
Thank you Vache, works great!
:good:

Hello vache,
great tool, but i've got a problem...
if i get my cpuid with "adb devices" it is just 11 digits long...
your tool said that it have to be 15 digits.
and if i use your a500 manager there are 16 digits and characters in my serial number

IncredibleHero said:
Hello vache,
great tool, but i've got a problem...
if i get my cpuid with "adb devices" it is just 11 digits long...
your tool said that it have to be 15 digits.
and if i use your a500 manager there are 16 digits and characters in my serial number
Click to expand...
Click to collapse
Remove the 1st digit if it's a zero.

vache said:
Remove the 1st digit if it's a zero.
Click to expand...
Click to collapse
CPUID can be 16 digits long - mine is and it generates valid SBKs. In fact I usually add a zero to the beginning if it's only 15 to make it 16, although my CPUID starts with a 1

Mine is 16 char long - extracted via backup from cwm. But SBCalc, http://a500bootloaderflash.tk/sbkcalc/ and A500Manager1.1 all says my cpuid is invalid any ideas

can u help me sir
i have my cpuid but when i use this tool i got the warning "please check your cpuid"....can u help get sbk code from my cpuid???here my cpuid no (0xa74420244808057)

cyclone77 said:
i have my cpuid but when i use this tool i got the warning "please check your cpuid"....can u help get sbk code from my cpuid???here my cpuid no (0xa74420244808057)
Click to expand...
Click to collapse
not sure if it is correct but try: 0x42530000 0x2B89BB01 0xEBE55D03 0x507A2103

cyclone77 said:
i have my cpuid but when i use this tool i got the warning "please check your cpuid"....can u help get sbk code from my cpuid???here my cpuid no (0xa74420244808057)
Click to expand...
Click to collapse
Try this: 0xA0ABC201 0x1B34BE01 0xEBE55D03 0x507A2103

[MOD/GUIDE] X-Recents

Hey Guys!
After a few requests I decided to share my X-Recents mod with you, so that other developers get the ability to add it to their Rom. This is just for Developers building Roms from Source! Also, medium skills on java coding are recommended!
What is X-Recents mod?
It's a mod improving the stock android recents, to make them more user-friendly and feature-rich. It was already implemented in my X-Bean Rom for i9000
Please note:
- you can use this for all ICS/JB Roms and for all devices
- just add me to the credits, if you want to use it, and notify me: [email protected]
- The swype FC Bug (occurs when swyping over the Button) still exists, to fix it just add try/catch blocks at all points that cause the FC it (use adb/logcat for analysis)
- If you like my work and want to support me, the Thanks & the Donate button are always appreciated!
Okay, so let's get started: You can find all files in: system/frameworks/base/packages/SystemUI/src/com/android/systemui/recent (in your working directory, or whereever you're SystemUI sourcecode is)
At first, we modify the RecentTasksLoader.java:
l.260: final int first = 1;
to : final int first = 0;
This loads the current activity into the recents list.. Only problem: The launcher shall not be shown in the recents list, so we have to make a exeption for it:
l.270: if (item != null) {
to : if (item != null && item.packageName!="com.cyanogenmod.trebuchet") { // You can add as many exeptions for apps as you want
Next point: Adding the Taskmanager button:
At first, open RecentsVerticalScrollView.java:
Insert this at line 95:
Code:
private void opentaskmanager() {
PackageManager pm = getContext().getPackageManager();
Intent appStartIntent = pm.getLaunchIntentForPackage("your.taskmanager.packagename.here");
if (null != appStartIntent)
{
getContext().startActivity(appStartIntent);
}
}
Remember to change the "your.taskmanager.packagename.here" to the package name of your taskmanager!
Now, wrap a try/catch block around the loop content in line 107:
Code:
for (int i = 0; i < mLinearLayout.getChildCount(); i++) {
try {
View v = mLinearLayout.getChildAt(i);
addToRecycledViews(v);
mAdapter.recycleView(v);
} catch (Exception ex) {
}
}
Also add a try here (I can't give you a line, because you inserted something before) :
Code:
for (int i = 0; i < mAdapter.getCount(); i++) {
try {
View old = null;
And a catch here:
Code:
calloutLine.setOnTouchListener(noOpListener);
mLinearLayout.addView(view);
} catch (Exception ex) {
}
}
To add the button, insert this:
Code:
Button bt_taskmanager = new Button(getContext());
bt_taskmanager.setText("Task Manager");
bt_taskmanager.setWidth(mLinearLayout.getWidth());
bt_taskmanager.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
opentaskmanager();
}
});
mLinearLayout.addView(bt_taskmanager);
Between these two lines:
setLayoutTransition(transitioner);
// Scroll to end after layout.
Okay, now we've got the button!
At last I want to give you something you can experiment with:
Code:
private void clearalltasks() {
final ActivityManager am = (ActivityManager)
mContext.getSystemService(Context.ACTIVITY_SERVICE);
final List<ActivityManager.RecentTaskInfo> recentTasks =
am.getRecentTasks(50, ActivityManager.RECENT_IGNORE_UNAVAILABLE);
for (int i = 0; i >= recentTasks.size(); i++) {
RecentTaskInfo item = recentTasks.get(i);
if (am != null && item!=null) {
try {
am.removeTask(item.persistentId, ActivityManager.REMOVE_TASK_KILL_PROCESS);
} catch (Exception ex) {
}
try {
am.killBackgroundProcesses(item.origActivity.getPackageName());
} catch (Exception ex) {
}
}
}
mLinearLayout.removeAllViews();
try {
update();
} catch (Exception ex) {
ex.printStackTrace();
}
}
This is my first attempt to add a clear all button.. Do with it what you want, I tried it and it works half-ways.. But not perfectly. I will add some more things later, for example how to add several more Buttons!

Screenshot:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

Very good ...

Awesome post!

What is this, guys?

I installed CWM 6.0.3.6. But it show this message when I enter recovery. I tried to disregard. But it is annoying.
So what does mean that, guys?
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

It happens to me too... duuno why is that...
Have you tried to wipe dalvik cache? Sometimes FAIL's to me ._.

DevastatingTech said:
I installed CWM 6.0.3.6. But it show this message when I enter recovery. I tried to disregard. But it is annoying.
So what does mean that, guys?
Click to expand...
Click to collapse
found this on github
This is not a bug, it's a simple warning after some CM SELinux changes. Nothing should break by this message
Click to expand...
Click to collapse
and this on xda
_alp1ne said:
This happened to me also, but it has nothing to do with flashing or anything. It is best to ignore as it only means some file it is reading has no context.
Click to expand...
Click to collapse
and it started after flashing CWM 6.0.3.6 from CM10.1 thread ...(for me)
so basically we're safe....

is nothing to worry about, but , if you want to be 100% sure, add a durex

copy from CyanogenMod Forum:
it looks like the error is related to SELinux. But it seems safe to ignore.
------------------------------------------------------------------------------
/*
* Copyright (C) 2009 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include "edify/expr.h"
#include "updater.h"
#include "install.h"
#include "minzip/Zip.h"
// Generated by the makefile, this function defines the
// RegisterDeviceExtensions() function, which calls all the
// registration functions for device-specific extensions.
#include "register.inc"
// Where in the package we expect to find the edify script to execute.
// (Note it's "updateR-script", not the older "update-script".)
#define SCRIPT_NAME "META-INF/com/google/android/updater-script"
struct selabel_handle *sehandle;
int main(int argc, char** argv) {
// Various things log information to stdout or stderr more or less
// at random. The log file makes more sense if buffering is
// turned off so things appear in the right order.
setbuf(stdout, NULL);
setbuf(stderr, NULL);
if (argc != 4) {
fprintf(stderr, "unexpected number of arguments (%d)\n", argc);
return 1;
}
char* version = argv[1];
if ((version[0] != '1' && version[0] != '2' && version[0] != '3') ||
version[1] != '\0') {
// We support version 1, 2, or 3.
fprintf(stderr, "wrong updater binary API; expected 1, 2, or 3; "
"got %s\n",
argv[1]);
return 2;
}
// Set up the pipe for sending commands back to the parent process.
int fd = atoi(argv[2]);
FILE* cmd_pipe = fdopen(fd, "wb");
setlinebuf(cmd_pipe);
// Extract the script from the package.
char* package_data = argv[3];
ZipArchive za;
int err;
err = mzOpenZipArchive(package_data, &za);
if (err != 0) {
fprintf(stderr, "failed to open package %s: %s\n",
package_data, strerror(err));
return 3;
}
const ZipEntry* script_entry = mzFindZipEntry(&za, SCRIPT_NAME);
if (script_entry == NULL) {
fprintf(stderr, "failed to find %s in %s\n", SCRIPT_NAME, package_data);
return 4;
}
char* script = malloc(script_entry->uncompLen+1);
if (!mzReadZipEntry(&za, script_entry, script, script_entry->uncompLen)) {
fprintf(stderr, "failed to read script from package\n");
return 5;
}
script[script_entry->uncompLen] = '\0';
// Configure edify's functions.
RegisterBuiltins();
RegisterInstallFunctions();
RegisterDeviceExtensions();
FinishRegistration();
// Parse the script.
Expr* root;
int error_count = 0;
yy_scan_string(script);
int error = yyparse(&root, &error_count);
if (error != 0 || error_count > 0) {
fprintf(stderr, "%d parse errors\n", error_count);
return 6;
}
struct selinux_opt seopts[] = {
{ SELABEL_OPT_PATH, "/file_contexts" }
};
sehandle = selabel_open(SELABEL_CTX_FILE, seopts, 1);
if (!sehandle) {
fprintf(stderr, "Warning: No file_contexts\n");
fprintf(cmd_pipe, "ui_print Warning: No file_contexts\n");
}
// Evaluate the parsed script.
UpdaterInfo updater_info;
updater_info.cmd_pipe = cmd_pipe;
updater_info.package_zip = &za;
updater_info.version = atoi(version);
State state;
state.cookie = &updater_info;
state.script = script;
state.errmsg = NULL;
char* result = Evaluate(&state, root);
if (result == NULL) {
if (state.errmsg == NULL) {
fprintf(stderr, "script aborted (no error message)\n");
fprintf(cmd_pipe, "ui_print script aborted (no error message)\n");
} else {
fprintf(stderr, "script aborted: %s\n", state.errmsg);
char* line = strtok(state.errmsg, "\n");
while (line) {
fprintf(cmd_pipe, "ui_print %s\n", line);
line = strtok(NULL, "\n");
}
fprintf(cmd_pipe, "ui_print\n");
}
free(state.errmsg);
return 7;
} else {
fprintf(stderr, "script result was [%s]\n", result);
free(result);
}
if (updater_info.package_zip) {
mzCloseZipArchive(updater_info.package_zip);
}
free(script);
return 0;
}
http://forum.cyanogenmod.com/topic/75956-cwm-on-nexus-4-after-43-update/

Okay guys, I will ignore this. Already, I hadn't any error. Thanks.

Accessing full resolution photo of Lumia 1020

I thought it'll be nice to post this here, in any event that it's needed in future. So there was an app called phriz.be in Nokia Collection that was released recently, it was the first third party app that have the ability to upload full resolution photo. I gave it a try on reverse engineering it, hoping that it was an undocumented API and not a new capability.
Unfortunately, there's simply no way to do it unless the device is interop unlocked which is rather useless on Nokia Lumia 1020 when the only WP8 device that's unlocked is Samsung Ativ S.
Deploying an app with such capability will give you the following:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Anyway.
<Capability Name="ID_CAP_MEDIALIB_PHOTO_FULL" />
Code:
private struct <getPhotos>d__2a : IAsyncStateMachine
Code:
this.<>4__this.IsPhotoLoading = true;
this.<>4__this.PhotoList.Clear();
taskAwaiter = this.<>4__this._deviceService.GetPhotos(this.<>4__this._currentAlbumName, 0, StateData.RecentMaxCount, true).GetAwaiter();
System.Collections.Generic.List<PhotoDisplay> arg_C9_0 = taskAwaiter.GetResult();
taskAwaiter = default(TaskAwaiter<System.Collections.Generic.List<PhotoDisplay>>);
System.Collections.Generic.List<PhotoDisplay> list = arg_C9_0;
this.<list>5__2b = list;
System.Collections.Generic.List<PhotoDisplay>.Enumerator enumerator = this.<list>5__2b.GetEnumerator();
try
{
while (enumerator.MoveNext())
{
PhotoDisplay current = enumerator.Current;
this.<>4__this.PhotoList.Add(current);
}
}
finally
{
if (flag)
{
((System.IDisposable)enumerator).Dispose();
}
}
this.<>4__this.TryShowMoreLink();
this.<>4__this.RaisePropertyChanged("IsPhotoAvailable");
Code:
// Phrizbe.ViewModel.MainViewModel
private readonly IDeviceService<PhotoDisplay, DocumentDisplay, AlbumDisplay, TransferLogItem, ActivityLogItem, ActivityLog> _deviceService;
Code:
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Threading.Tasks;
namespace Phrizbe.Lib.Model
{
public interface IDeviceService<P, D, A, TL, ALI, AL>
{
void AddActivityLogItem(string deviceName, long deviceId, long deviceOSPlatform, string emailAddress, ALI logItem);
void AddApprovedDevice(string deviceName);
bool AddDownloadBackgroundTransfer(ALI ali, Target sender);
string AddUploadBackgroundTransfer(TransferItemDetail detail);
void ClearCachedPhotos();
void CreateTransferThumbnail(byte[] bytes, string fileName);
List<AL> GetActivityLogs();
Task<ObservableCollection<string>> GetAlbumNames();
Task<List<A>> GetAlbums();
Task<P> GetAlbumThumbnail(string albumName);
string GetCleanFileName(string fileName);
Device GetDeviceInfo();
Task<List<D>> GetDocuments(bool useCache);
Task<P> GetPhoto(string albumName, string fileName, bool useCache);
Task<List<P>> GetPhotos(string albumName, int startIndex, int returnCount, bool useCache);
Task<LocationReport> GetLocation(bool useCache);
bool IsApprovedDevice(string deviceName);
bool IsNetworkAvailable();
bool IsThumbnailDownloaded(long transferId);
long LoadDeviceId();
void RemoveActivityLogItem(string deviceName, ALI logItem);
void RemoveBackgroundTransfer(string requestId, bool forceRemove);
void RemoveActivityLog(string deviceName);
void SaveDeviceId(long deviceId);
Task<bool> SaveFile(ReceiveDataResponse response, string fileName, ActivityContentTypes contentType);
void SaveLogData();
Task<bool> SavePreviewFile(ReceiveDataResponse response, string fileName, long transferId);
void UpdateActivityLogNewCount(string deviceName, long deviceId, int count, bool saveLogData);
}
}
Task<P> GetPhoto(string albumName, string fileName, bool useCache);

[Q] empty fields crast my app

Hello everyone,
I have start my first app, with this app, can you count your small change. And It works fine.
But, the fields must have a number, otherwise will my app cras.
Is there a solution to fix this? I mean if the user no number set on a row, that the app see this as a zero?
This looks my app:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
this is the code what i use, it is maby not perfect but I am a beginner.
Code:
Button btn_optellen = (Button) findViewById(R.id.btn_optellen);
btn_optellen.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
double een = Double.valueOf(txt_001.getText().toString());
double twee = Double.valueOf(txt_002.getText().toString());
double total_een = een * 0.01 ;
double total_twee = twee * 0.02 ;
double totaal = total_een + total_twee;
tt_001.setText(String.format("= €%.2f", total_een ));
tt_002.setText(String.format("= €%.2f", total_twee ));
tt_totaal.setText(String.format("= €%.2f", totaal));

After you write the values to een and twee, you should do a check if they are null. And if that check is true, then set the value to 0.
So to be precise: do this check just before the line
double total_een = een * 0.01;
Click to expand...
Click to collapse
--------------------
Phone: Nexus 4
OS: rooted Lollipop LRX21T
Bootloader: unlocked
Recovery: TWRP 2.8.2.0

Thanxs for your answer.
I hope I don't ask to muts. But I am ana beginner. Can your show how I must write it?

Ok so i just researched a bit and found out that if the string to parse is invalid, then there is an exception thrown immediately. I thought that just null would be returned, so we need a different approach. But here os how to do it:
Code:
Button btn_optellen = (Button) findViewById(R.id.btn_optellen);
btn_optellen.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
//we should initialize the two doubles to 0, so that we can just leave it like this in case of an error
double een = 0;
double twee = 0;
try {
een = Double.valueOf(txt_001.getText()); //btw, you dont need to call toString() after getText(). That method already returns a string so doing this would be redundant
} catch (Exception e) {} //nothing has to be done here, because the double has already been initialised to be 0
//same here
try {
twee = Double.valueOf(txt_002.getText());
} catch (Exception e) {}
//so now the two doubles are either set to 0 or to the value entered by the user, if it was a correct number
double total_een = een * 0.01 ;
double total_twee = twee * 0.02 ;
double totaal = total_een + total_twee;
tt_001.setText(String.format("= €%.2f", total_een ));
tt_002.setText(String.format("= €%.2f", total_twee ));
tt_totaal.setText(String.format("= €%.2f", totaal));
--------------------
Phone: Nexus 4
OS: rooted Lollipop LRX21T
Bootloader: unlocked
Recovery: TWRP 2.8.2.0

Very muth thanx, I am going try it out.