Posts by Woton Sampaio • 1,461 points
103 posts
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answer56
viewsQ: Run command - Terminal
Remembering that this is not just for this case, I want to create for example . Bats to automate some things, so I would like to know how to make you wait for the return of commands and interpret my…
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answer94
viewsA: While() loop validation bug?
Try to go through the Cursor thus: Cursor c = db.rawQuery("select..."); c.moveToFirst(); for(int i = 0; i < c.getCount(); i++){ String valor = c.getString(c.getColumnIndex("Nome da coluna"));…
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votes3
answers3139
viewsA: Video unavailable
Try this: <iframe id="ytplayer" width="280" height="130" src="https://www.youtube.com/embed/7FrswUVAvmA" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope;…
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answer3849
viewsA: How to delete primary key (PK) in Mysql?
Run this query to remove the desired column: ALTER TABLE `tabela` DROP `coluna`; I see you’re a beginner in PT Stackoverflow, but is it really necessary to remove the primary key from your table?…
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answer103
viewsA: How to set a string coming from a sqlite database to display in a Textview?
To get the data from Cursor, soon after making the select you should make a: cursor.moveToFirst(); So it will go to the first index, to get the value of that index you do: String texto =…
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answer311
viewsA: How to convert Jsonarray to Arraylist<> on android
You can go through the Jsonarray and keep adding the items to your Arraylist ArrayList<DataProvider> data = new ArrayList<DataProvider>(); JSONArray array = new JSONArray(); array =…
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answer36
viewsA: Best practice to call a new screen
This will depend on what that registration will look like, if it’s something simple like name, value and date, for example, I believe that the Dialog already resolves, now if it is something more…
androidanswered Woton Sampaio 1,461 -
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answer15
viewsA: How to get Width of Imagebutton
I got it here: view.getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() { @Override public void onGlobalLayout() {…
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answer15
viewsQ: How to get Width of Imagebutton
How can I get the width of an Imagebutton defined in XML 0 being defined by weight? <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content"…
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answer228
viewsA: How to resolve a synchronization with the server when there is connection drop on Android?
You can do a check every X seconds/min/hour to check for internet, and all that is done you save in your Sqlite and creates a column that loads the default non-synchronized state, when that row is…
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answer38
viewsQ: Code before or after super
When screams a method, always comes the super of the parent class, but at the time of coding the right thing to do would be before or after it? In the example below the right would be this:…
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answers127
viewsA: Android - Edittext does not return typed value
Do it like this: EditText tamanho = findViewById(R.id.tamanho); int tam = Integer.parseInt(tamanho.getText().toString()); That should solve The error from the looks of it, you are not assigning a…
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answer103
viewsA: How to transition to the previous Fragment when pressing the back button?
Do so: Fragment fragment = new MyOtherFragment(); FragmentManager fm = getFragmentManager(); FragmentTransaction ft = fm.beginTransaction(); ft.replace(R.id.main_container, fragment);…
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answers29
viewsA: Select database items that contain something similar to the contents of an array
Mount your query like this: $array = array(0 => "valor1", 1 => "valor2", 2 => "valor3", 3 => "valor4"); $query = "SELECT * FROM sua_tabela WHERE"; foreach ($array as $k => $v) {…
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answers842
viewsA: Sharp word problem from Mysql database
In your connection file, do this: Object-oriented mode: $mysqli = new mysqli("host", "user," "senha", "db"); $mysqli->query("SET NAMES 'utf8'"); $mysqli->query('SET…
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answers47
viewsQ: Total Subrecords - Mysql
In my database I have several tables, but I’ll make a simple example of what I want to do: Assuming two tables: Table 1 id | store | date Table 2 id_2 | id_tab1_2 | product Note that the id_tab1_2…
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answer43
viewsA: Return an address
Do it this way: public class main extends AppCompatActivity { LocationListener locationListener; LocationManager locationManager; @Override protected void onCreate(Bundle savedInstanceState) {…
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answers253
viewsA: Comparison between PHP and mysql variables
Look at the example if each id comes from multiple records: if($th = $mysqli->query("SELECT * FORM `sua_tabela`"){ while($row = $th->fetch_assoc()){ if ($rows['block'] == $idBlock ) {/ //Seu…
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answer202
viewsA: How to insert onCreateOptionsMenu into a Java class?
As I said, if you use Fragments, they will all have the parent Activity, in it you implement the 2 methods, if case for each fragment you want them to options have a different function, you can do…
androidanswered Woton Sampaio 1,461 -
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answers625
viewsA: Search in 2 fields at the same time
Making the explode and assembling your query: //Separo a frase por espaço $v = explode(" ", "palavra 4"); $query = 'SELECT * FROM sua_tabela WHERE '; foreach ($v as $key => $value) { $query .=…
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answers215
viewsA: Relationship between two tables
Tip: I think it would be nicer to add in the second table tbl_games two fields: id_time1 and id_tim2 As foreign keys, imagine that there comes a point of your project that you want to pull…
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answer72
viewsQ: AUTO_INCREMENT customized
i have in a db MYSQL two tables that are linked: ADMIN id - nome - empresa Each admin adds several values in the Docs table: DOCS id_doc - id_admim_doc - doc - valor The column id_admim_doc is a…
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answers1029
viewsA: How to delete directory from internal storage on Android?
Do so: String path = "caminho da pasta/arquivo, etc"; boolean p = new File(path).delete(); if(p){ Toast.makeText(view.getContext(), "Deletado com sucesso!", Toast.LENGTH_SHORT).show(); }else{…
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answer188
viewsQ: Maximum size of Qrcode
I am implementing in a project a reader and generator of Qrcodes and I came to doubt, how long a Qrcode can store? I could get something around 3 pages of text?
qrcodeasked Woton Sampaio 1,461 -
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answer172
viewsA: Android Studio Doesn’t Recognize Gradle Libraries
If it runs normally even being like this, go to your Android Studio: Click on "File" Then under "Invalidate caches/ Restart" And finally confirm in "Invalidate and Restart"…
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answer318
viewsA: Recycleview item returning the same data for all items when clicked
To add a click event to each separate item or you do it here: @Override public void onBindViewHolder(MyViewHolder holder, int position) { DadosSolicitacao dados = solicitacoes.get(position);…
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answers73
viewsA: taking out the commas and sorting with php mysql
If it’s multiple records each with multiple numbers separated by comma you do so: $mysqli = new mysqli('host','user','pass','db'); $array = array(); if($th = $mysqli->query("SELECT * FROM…
arrayanswered Woton Sampaio 1,461 -
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answers533
viewsA: Set the first letter of the $variable in uppercase
If you want to make all words in the sentence capital the first letter, you can also use ucwords: echo ucwords("olá mundo!"); //Sairá: Olá Mundo!
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answers51
viewsA: How to cut a sentence and put the results in strings
You can use a replace: $frase = 'tem refrigerante na geladeira'; $pergunta = 'tem'; $local = 'na geladeira'; $output = str_replace($pergunta , "" , $frase); $output = str_replace($local , "",…
phpanswered Woton Sampaio 1,461 -
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answer29
viewsA: Itemclicklistener not available
Create this class in your project: public class RecyclerItemClickListener implements RecyclerView.OnItemTouchListener { private OnItemClickListener mListener; public interface OnItemClickListener {…
androidanswered Woton Sampaio 1,461 -
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answer53
viewsA: Drag n Drop - Android
In my Myondraglistener, I need to specify the position where to put the new version in my layout. Doing so: View view = (View) event.getLocalState(); RelativeLayout container = (RelativeLayout) v;…
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answer53
viewsQ: Drag n Drop - Android
I made a Drag n Drop system, but when I insert the item, it seems that gravity is like top, when inserting new ones, they stand on top of each other, like drop where I drop the finger? The items are…
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answers653
viewsQ: How the.setOnClickListener(view -> method() item works)
How does this item.setOnClickListener(view -> method());? I’ve never seen that kind of call, I saw it today and I was curious about that view, where does it come from? How does this type of call…
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answer337
viewsA: Recover user name and email in Navigationdrawer?
If you’re using the Navigationdrawer the template already provides: NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);…
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answer79
viewsA: Camera does not work
I made it work and you know how? I restarted the phone, and how did I find it? I tried to use Whastapp’s camera function and showed me the message that it was not possible to access the camera at…
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answer79
viewsQ: Camera does not work
I tried to access the camera phone, it worked 3 times, then the screen went black (Print below) in API 24, I tested it on a mobile phone with API 22 and it worked, with API 24 no, someone knows how…
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answer38
viewsA: Error trying to open map with path disabled
To ask the user to turn on the gps if off do: @Override public void onResume() { super.onResume(); //Pede para ligar o gps caso desligado String provider =…
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answers866
viewsQ: Compare using String.Contains() disregarding accents and case
I know there’s already question, I even used the same title to call attention, but this one refers to C#, I’m having this problem in java, code: //historico e searchC são ArrayLists, no caso do case…
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answers2334
viewsA: How to get the input value in real time?
You will need js, it will be something like this: $('#iddoinput').keyup(function(){ var text = $(this).val(); alert(text); //Aqui dentro você faz o que quer, manda pra um arquivo php com ajax //ou…
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answer27
viewsA: Change shadow color of Viewpager
This color is usually the same as Accent, look in the res folder, in the Styles file, if not, add these lines: <style name="AppTheme" parent="android:Theme.Material"> <!-- Main theme colors…
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answer1462
viewsA: Dynamically change the image of an imageView (Android Studio)?
Make a vector with the images: int[] imagensIds = { R.drawable.image1, R.drawable.image2, R.drawable.image3 }; //E um int para saber qual posição int i = 0; Your image carries the first with the…
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answers30
viewsA: Component with same height
An alternative way without using java: <LinearLayout ... android:layout_alignParentTop="true" android:layout_alignBottom="@+id/lista_nome" .../>…
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answers30
viewsQ: Component with same height
There is a way to make a Linearlayout to have the same height as a Textview? <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content"…
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answers42
viewsQ: Array x Arraylist
Yesterday I made a question on how to use a Two-dimensional Array dynamically, so I ended up getting a reply to use a Arraylist, and this served perfectly for my case, however, from that it…
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answers206
viewsQ: Dynamic Array - Android
How to create a dynamic array in this way: //Apenas um exemplo abaixo: String valor0 = "1;2;3;4;5;6;7;8;9;0"; String valor1 = "1;2;3;4;5;6;7;8;9;0"; String valor2 = "1;2;3;4;5;6;7;8;9;0"; //Um array…
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answer413
viewsA: How do I set a value in Edittext if empty?
Do it like this: EditText edit = (EditText)findViewByid(R.id.edit); //estabeleço o conexão if(edit.getText().toString().isEmpty()){ // verificando se a edit esta vazia String num = "6"; // Ou use um…
androidanswered Woton Sampaio 1,461 -
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answer57
viewsA: How to take the return of this method
Finally got it, I changed the method and the class, it was like this: public class Inflate{ private static final String FRAG_TAG_DATE_PICKER = "fragment_date_picker_name"; public void…
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answer57
viewsQ: How to take the return of this method
I’m using the lib betterpickers, I tried to make a class to take your information form OO, however the method does not have a return, it is a void, there is a way to catch this return? public class…
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answers963
viewsA: store the value of a query in a php variable
If you’re trying to give a: echo totalEspumas(); It’s wrong, since it returns an array, the right one would be: $var = totalEspumas(); echo $var[seu_index]; If you want to see everything in the…
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answer72
viewsQ: Very large array - Android
Which ones problems I could face in the manipulation of arrays many a great? When I say arrays I mean at least 25, each containing +of 1000 index. Performance: Would my application’s performance be…