I have the following code (very simple)
if (document.getElementById(id).checked == false)
document.getElementById(id).checked = true;
And it works perfectly but it shows the following error
Like I said before, it works. But I need to remove said error to compile the first time.
I have an outer class export classas a template for an object.
export class Car{
name: Boolean;
other: {
prize: String;
brand: String;
};
doors: {
number: String,
size: String,
};
}
I'm trying to access it from another class, so I've created a new variable
var car= new Car();
Since nameit is a boolean, I assume that it is initialized with a trueposition which is its default value. My problem comes when I try to initialize the object doorsafter it doesn't have it.
var car= new Car();
this.car.doors[pos].number;
When I try to access it it tells me that undefined. How could I access it? I guess I need to initialize it in the constructor.
I don't need to initializeother
Good morning, I am new to Angular2 and I have some problems with the use of Observables and components
ERROR to solve
ERROR Error: Cannot find a differ supporting object '[object Object]' of type 'object'. NgFor only supports binding to Iterables such as Arrays
I have a REST service that returns a JSON with certain information, From the component that I have created, I call said service:
Component.ts
ngOnInit() {
this.getSystems();
}
getSystems(): void {
this.systemService.getSystems()
.subscribe(systems => this.systems = systems);
}
The problem is that I am not dealing with an Array of information, but with an object, so I cannot use the *ngfor command.
Component.html
<li *ngFor="let system of systems">
<a routerLink="/systemDetail/{{system.systemId}}">
<span class="badge">{{system.systemId}}</span>
{{system.host}}
{{system.password}}
{{system.port}}
{{system.rfcDest}}
{{system.userId}}
{{system.version}}
</a>
</li>
From what I've read, the solution would be to create a @Pipe but I'm not sure how it works. Could someone clarify for me?
JSON
{
"test":
[
{
"host": "h265",
"messagingSystemID": "1",
"password": "xxx,
"port": "50000",
"rfcDest": "testDes",
"systemID": "PPO",
"userId": "TestUser",
"version": "7.5"
},
{
"host": "h455",
"messagingSystemID": "2",
"password": "xxx",
"port": "50000",
"rfcDest": "testDes2",
"systemID": "PPO",
"userId": "TestUser",
"version": "7.5"
}
]
}
Expected answer My intention is to print these systems in text, table, or any other way possible. But all of them.
Service - Option 1 This is the first solution I tried to do
/** GET systems from the server */
getSystems (): Observable<System[]> {
var data = this.http.get<System[]>(this.systemsUrl);
console.log('getSystems service');
console.log(data);
return data;
}
error displayed
Service - Solution 2 I have also tried to make the service call in the following way:
getSystems(): Observable<System[]> {
let url = 'http://10.8.0.2:50000/integration.experts~web~mappingtesttool/rest/systems';
console.log(url);
return this.http.get(url)
.map(this.extractData);
}
private extractData(res: Response) {
let body = res.json();
console.log("extraData");
return body || { }; // here
}
error displayed
Could someone tell me what I'm doing wrong? I don't care if I use option 1 or option 2 of the service. Cheers
I am trying to make a query in MongoDB, and it is not clear to me how to do it.
Through the following line, I get the displayed:
I would like to know if there is any way to get only the field in question, ie "qfmSLTmr3tyZwykaA" and not everything that precedes it.
Or treat it somehow throughjavascript
I am starting to work with them ImageViewand I would like to know how to exchange funds between them dynamically. Suppose I have two ImageView:
1)ImageView puesto_1_foto_1 = (ImageView) findViewById(R.id.puesto_1_foto_1);
two)ImageView mi_puesto_foto_1 = (ImageView) findViewById(R.id.mipuesto_foto_1);
What I would like to do is, once they are preloaded through java, access the image itself that these ImageViewhave defined as background, in order to put the one of one to the other, and the one of the other to this first.
I'll try to explain it with an image:
I think my question should be simple to answer, but I really don't know the answer so here goes:
I am trying to subtract the original height from a layout50 dps. Right now I do it as follows:
v.getLayoutParams().height = initialHeight - 50;
v.requestLayout();
The problem with this is that it's subtracting via the metric px, and I'd like to work withdp
I'm trying to store an entry by keyboard or inputin a variable, but when I try to print it, it returns empty.
It is a simple login.
I have a file called login.js, in which I set the fromas follows:
Template.login.events({
'submit form': function(event) {
event.preventDefault();
Meteor.loginWithPassword(**aux =** event.target.usuario.value, event.target.clave.value, function(err){
Regarding the html file, the code it presents is the following:
div class="modal-body">
<form class="form col-md-12 center-block">
<div class="form-group">
<input name="usuario" type="text" id="inputEmail" class="form-control input-lg" placeholder="Usuario" required autofocus>
</div>
<div class="form-group">
<input name="clave" type="password" id="inputPassword" class="form-control input-lg" placeholder="Contraseña" required>
</div>
<div class="form-group">
<button class="btn btn-lg btn-primary btn-block" type="submit">Ingresar</button>
<br>
<!--Es posible que sea necesario,destinar un link, para ayudar al usuario en el caso de que no pueda acceder-->
<span><a id="ayuda" href="#">¿Necesitas ayuda?</a></span>
</div>
</form>
</div>
When trying to print the value of said variable from another template( {{aux}}), through the html file, it does not print any value. The value I'm trying to store and print to another templateis the username,
I have tried this process by importing and exporting the variable in various ways, but I never get to print the value. Honestly, I'm not very sure how to do it (I'm new to web programming, and Meteor)
I would like to know how to access the variables of an activity from its fragment.
I will give an example to clarify my doubt:
Suppose I have an activity with a global variable called ventanaFragmentoAbierta, and I want when the fragment opens one of its layouts it puts its value to trueand the activity finds out in real time (I'd like to work on onBackPressed()it based on this).
I am starting to work with floating buttons (Fab) and I would like to answer a question.
When implementing them I have no problems, but I would like to change the layout of the buttons when pressing the main button.
I attached an image to explain better:
This is what I have coded so far:
For this, I have followed the following code
public void creacion_fab() {
fab_rankit = (FloatingActionButton) findViewById(R.id.fab_rankit);
fab_buscar = (FloatingActionButton) findViewById(R.id.fab_buscar);
fab_cambioActividad = (FloatingActionButton) findViewById(R.id.fab_cambioActividad);
fab_home = (FloatingActionButton) findViewById(R.id.fab_home);
FabOpen = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.fab_open);
FabClose = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.fab_close);
FabClockwise = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.rotate_anticlockwise);
FabAnticlockwise = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.rotate_clockwise);
fab_rankit.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (isOpen) {
fab_home.startAnimation(FabClose);
fab_cambioActividad.startAnimation(FabClose);
fab_buscar.startAnimation(FabClose);
fab_rankit.startAnimation(FabClockwise);
fab_home.setClickable(false);
fab_buscar.setClickable(false);
fab_cambioActividad.setClickable(false);
isOpen = false;
} else {
fab_home.startAnimation(FabOpen);
fab_cambioActividad.startAnimation(FabOpen);
fab_buscar.startAnimation(FabOpen);
fab_rankit.startAnimation(FabAnticlockwise);
fab_home.setClickable(true);
fab_buscar.setClickable(true);
fab_cambioActividad.setClickable(true);
isOpen = true;
}
}
}); } }
XML
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/id_principalActivity"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="mario.rankit.Principal_Activity">
<include layout="@layout/content_principal_" />
<android.support.design.widget.FloatingActionButton
android:id="@+id/fab_home"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end"
android:backgroundTint="#0089D5"
android:elevation="6dp"
android:src="@drawable/home"
android:visibility="invisible"
app:fabSize="normal"
app:layout_anchor="@+id/fab_buscar"
app:layout_anchorGravity="top"
app:pressedTranslationZ="12dp"
/>
<android.support.design.widget.FloatingActionButton
android:id="@+id/fab_buscar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end"
android:backgroundTint="#0089D5"
android:elevation="6dp"
android:src="@drawable/fab_buscar"
android:visibility="invisible"
app:fabSize="normal"
app:layout_anchor="@+id/fab_cambioActividad"
app:layout_anchorGravity="top"
app:pressedTranslationZ="12dp"
/>
<android.support.design.widget.FloatingActionButton
android:id="@+id/fab_cambioActividad"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end"
android:backgroundTint="#0089D5"
android:elevation="6dp"
android:src="@drawable/fab_publicar"
android:visibility="invisible"
app:fabSize="normal"
app:layout_anchor="@+id/fab_rankit"
app:layout_anchorGravity="top"
app:pressedTranslationZ="12dp" />
<android.support.design.widget.FloatingActionButton
android:id="@+id/fab_rankit"
android:layout_width="75dp"
android:layout_height="74dp"
android:layout_gravity="bottom|end"
android:layout_margin="@dimen/fab_margin"
android:backgroundTint="#0089D5"
android:elevation="6dp"
android:icon="@mipmap/ic_launcher"
android:src="@drawable/logofinal"
app:fabSize="normal"
app:pressedTranslationZ="12dp"
/>
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="@color/colorToolbar"
android:title="@string/titulo_principal"
app:popupTheme="@style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<ImageView
android:layout_width="42dp"
android:layout_height="42dp"
android:layout_marginLeft="310dp"
android:layout_marginTop="6dp"
android:background="@drawable/buscar" />
<ImageView
android:id="@+id/bt_alertas"
android:layout_width="42dp"
android:layout_height="42dp"
android:layout_marginLeft="250dp"
android:layout_marginTop="6dp"
app:srcCompat="@drawable/alertas" />
However, what I am looking for is the following button layout: (what I am attaching is just an image designed through Paint. It is not coded)
Does anyone know how to implement it? Thank you
I'm starting to work with Android Studio and I'm having doubts.
My problem is the following:
I have an application that has a "Splashscreen" or presentation screen and it works as a launcher for it. After a few seconds jump to another activity to login.
When this second screen (login) is presented, I would like that when pressing the back button,
@Override public void onBackPressed() {}
and through this action send the application to the background.
It is the same behavior that the vast majority of applications present, so I suppose that there will be some method to solve it easily.
All the best.
I am designing my first Android App and I am facing the following problem:
When I access my gallery by pressing a button, the images I can use are those that come from the "Download" and "Screenshot" directories. The rest fail me.
Also, this only works when I access from "Gallery" and not "Photos". My Android version is 4.3 (I mention it in case it has any relevance, since the code in some parts needs a higher one)
I am attaching a picture to make it all clearer:
As for the code (it might be a bit chaotic. Like I said, I'm new to this):
import static android.Manifest.permission.CAMERA;
import static android.Manifest.permission.WRITE_EXTERNAL_STORAGE;
public class RegistroActivity extends AppCompatActivity {
private static String APP_DIRECTORY = "MyPictureApp/";
private static String MEDIA_DIRECTORY = APP_DIRECTORY + "PictureApp";
private final int MY_PERMISSIONS = 100;
private final int SELECT_PICTURE = 300;
private ImageView mSetImage;
private Button mOptionButton;
private RelativeLayout mRlView;
private String mPath;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_registro);
Button bt_listo = (Button) findViewById(R.id.bt_listo);
bt_listo.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v){
Toast toast1 =
Toast.makeText(getApplicationContext(),
"Registrado Correctamente", Toast.LENGTH_SHORT);
toast1.show();
Intent intent_registrar = new Intent(RegistroActivity.this, MainActivity.class);
startActivity(intent_registrar);
}
});
mSetImage = (ImageView) findViewById(R.id.ibt_imagen);
mOptionButton = (Button) findViewById(R.id.bt_galeria);
mRlView = (RelativeLayout) findViewById(R.id.id_registroactivity);
if(mayRequestStoragePermission())
mOptionButton.setEnabled(true);
else
mOptionButton.setEnabled(false);
mOptionButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.i("X: "+ mOptionButton.getX(), "Y: " + mOptionButton.getY());
mOptionButton.setVisibility(View.GONE);
Intent intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
intent.setType("image/*");
startActivityForResult(intent.createChooser(intent, "Seleccionar imagen"), SELECT_PICTURE);
}
});
}
@Override
public void onBackPressed(){
}
private boolean mayRequestStoragePermission() {
if(Build.VERSION.SDK_INT < Build.VERSION_CODES.M)
return true;
if((checkSelfPermission(WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) &&
(checkSelfPermission(CAMERA) == PackageManager.PERMISSION_GRANTED))
return true;
if((shouldShowRequestPermissionRationale(WRITE_EXTERNAL_STORAGE)) || (shouldShowRequestPermissionRationale(CAMERA))){
Snackbar.make(mRlView, "Permisos requeridos",
Snackbar.LENGTH_INDEFINITE).setAction(android.R.string.ok, new View.OnClickListener() {
@TargetApi(Build.VERSION_CODES.M)
@Override
public void onClick(View v) {
requestPermissions(new String[]{WRITE_EXTERNAL_STORAGE, CAMERA}, MY_PERMISSIONS);
}
});
}else{
requestPermissions(new String[]{WRITE_EXTERNAL_STORAGE, CAMERA}, MY_PERMISSIONS);
}
return false;
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putString("file_path", mPath);
}
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
mPath = savedInstanceState.getString("file_path");
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(resultCode == RESULT_OK){
Uri path = data.getData();
mSetImage.setImageURI(path);
mSetImage.requestLayout();
mSetImage.getLayoutParams().height = 140;
mSetImage.getLayoutParams().width = 140;
Toast.makeText(RegistroActivity.this, "Imagen cargada", Toast.LENGTH_SHORT).show();
}
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if(requestCode == MY_PERMISSIONS){
if(grantResults.length == 2 && grantResults[0] == PackageManager.PERMISSION_GRANTED && grantResults[1] == PackageManager.PERMISSION_GRANTED){
Toast.makeText(RegistroActivity.this, "Permisos aceptados", Toast.LENGTH_SHORT).show();
mOptionButton.setEnabled(true);
}
}else{
showExplanation();
}
}
private void showExplanation() {
AlertDialog.Builder builder = new AlertDialog.Builder(RegistroActivity.this);
builder.setTitle("Permisos denegados");
builder.setMessage("Permisos requeridos");
builder.setPositiveButton("Aceptar", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Intent intent = new Intent();
intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
Uri uri = Uri.fromParts("package", getPackageName(), null);
intent.setData(uri);
startActivity(intent);
}
});
builder.setNegativeButton("Cancelar", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
finish();
}
});
builder.show();
}
}
<?xml version="1.0" encoding="utf-8"?>
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/pt_alias"
android:layout_centerVertical="true"
android:hint="@string/pt_alias"
android:layout_alignLeft="@+id/bt_listo"
android:layout_alignStart="@+id/bt_listo"
android:layout_alignRight="@+id/ibt_imagen"
android:layout_alignEnd="@+id/ibt_imagen" />
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/pt_correoElectronico"
android:layout_below="@+id/pt_alias"
android:layout_alignRight="@+id/pt_alias"
android:layout_alignEnd="@+id/pt_alias"
android:hint="@string/pt_email"
android:layout_alignLeft="@+id/pt_alias"
android:layout_alignStart="@+id/pt_alias" />
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/pt_contraseña"
android:layout_below="@+id/pt_correoElectronico"
android:layout_alignRight="@+id/pt_correoElectronico"
android:layout_alignEnd="@+id/pt_correoElectronico"
android:hint="@string/pt_contraseña"
android:layout_alignLeft="@+id/pt_correoElectronico"
android:layout_alignStart="@+id/pt_correoElectronico" />
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/pt_repetirContraseña"
android:layout_below="@+id/pt_contraseña"
android:layout_alignRight="@+id/pt_contraseña"
android:layout_alignEnd="@+id/pt_contraseña"
android:hint="@string/pt_repetirPass"
android:layout_marginBottom="30dp"
android:layout_alignLeft="@+id/pt_contraseña"
android:layout_alignStart="@+id/pt_contraseña" />
<Button
android:layout_width="250dp"
android:layout_height="wrap_content"
android:id="@+id/bt_listo"
android:layout_below="@+id/pt_repetirContraseña"
android:layout_centerHorizontal="true"
android:text="@string/bt_listo"
android:clickable="true"
/>
<ImageView
android:layout_width="180dp"
android:layout_height="180dp"
android:id="@+id/logoRegistro"
android:background="@drawable/logofinal"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="20dp"/>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/ibt_imagen"
android:clickable="true"
android:layout_above="@+id/pt_alias"
android:layout_alignRight="@+id/bt_listo"
android:layout_alignEnd="@+id/bt_listo"
android:gravity="right"
/>
<Button
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/bt_galeria"
android:background="@drawable/foto"
android:layout_alignBottom="@+id/ibt_imagen"
android:layout_alignRight="@+id/ibt_imagen"
android:layout_alignEnd="@+id/ibt_imagen" />
And the error displayed:
11-13 10:35:52.826 3137-3137/mario.rankit E/AndroidRuntime: FATAL EXCEPTION: main
java.lang.OutOfMemoryError
at android.graphics.BitmapFactory.nativeDecodeStream(Native Method)
at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:623)
at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:444)
at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:832)
at android.graphics.drawable.Drawable.createFromStream(Drawable.java:783)
at android.widget.ImageView.resolveUri(ImageView.java:673)
at android.widget.ImageView.setImageURI(ImageView.java:407)
at mario.rankit.RegistroActivity.onActivityResult(RegistroActivity.java:137)
at android.app.Activity.dispatchActivityResult(Activity.java:5563)
at android.app.ActivityThread.deliverResults(ActivityThread.java:3496)
at android.app.ActivityThread.handleSendResult(ActivityThread.java:3543)
at android.app.ActivityThread.access$1200(ActivityThread.java:159)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1364)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:176)
at android.app.ActivityThread.main(ActivityThread.java:5419)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1046)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862)
at dalvik.system.NativeStart.main(Native Method)
I was wondering if anyone knew how to fix it. All the best.
I present my problem:
I have an activity
called public class PosicionamientoActivity extends AppCompatActivity,
and a java class (not an activity)
public class DecisorCoordenadas {
public DecisorCoordenadas(Context contexto, Coordinador coordinador) {
I would like to know how I could execute a method ( public void resetInfo_Coordenadas(){) of my java class from the activity.
All the best.
Good morning, I've been programming on Android for a few weeks and I'm having certain problems with the use of getFragmentManager.
I have read post about the termination of activities and this is what I have come up with:
Quote Answer Stack Over Flow English 1
Also onDestroy() is not a destructor. It doesn't actually destroy the object, it's just a method that returns a certain state.
in addition to this:
Quote Answer Stack Over Flow English 2
Consider then that your application will be in the background and then die. When you come back Android will remember that you had Fragments, for example A, B and C and the manager will recreate them and then add them.
I call the method 2 times from one of my activities, and the second time (after doing a getActivity.finish(), recreating the activity and returning to the method from the previous fragment), it points to null.
The point of failure is:
private BroadcastReceiver estadoIAReceiver = new BroadcastReceiver() {
//Cuando cambia el estado de indoor atlas actualizo la interfaz con sus propiedades
@Override
public void onReceive(Context context, Intent intent) {
Log.i("VFragment", "Cambio estado IA");
//Ejecutar metodo de un fragment desde una actividad
infoF = (InformacionFragment) getFragmentManager().findFragmentById(R.id.posicionamiento_layout); // <<--- AQUI!!!
infoF.actualizaInfoEstadoIA();
infoF.onResume();
}
};
and infoFis what it givesnull
infoF = (InformacionFragment) getFragmentManager().findFragmentById(R.id.posicionamiento_layout);
this brings me backnull
I've been debugging the app and re-creating activities and fragmentsit's correct, so it shouldn't point to null.
My question is:
With what I read, I have intuited that it is trying to point to the old fragmentone (1 time executed), since finish() does not really delete 100% Activity(and I assume it fragmentsdoes not either). How could I fix it?