Develop Reference

Views not found for Alert Dialog in fragments

I am trying to populate an Alert Dialog (with a layout file having an EditText & Button) within a fragment of Activity.
The components are not being found by calling findViewById() in the fragment's corresponding class. I have written this code inside the class :
AlertDialog.Builder builder=new AlertDialog.Builder(context);
View v=getLayoutInflater().inflate(R.layout.layout_alert_dialog,null);
final EditText txtAddNew=v.findViewById(R.id.txtAddNew); //null
final TextView txtErr = v.findViewById(R.id.txtErr); //null
Button btnAdd=v.findViewById(R.id.btnAdd); //null
I think the problem raises from this line of code:
View v=getLayoutInflater().inflate(R.layout.layout_alert_dialog,null);
The alertDialog XML code is below:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<EditText
android:id="#+id/txtAddNew"
android:hint="Category name"/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/txtErr"
/>
<Button
android:id="#+id/btnAdd"
android:text="Add Category" />
</LinearLayout>
Can anyone find what the actual problem is? Thanks!

Yes, that's correct
Do something like this :
LayoutInflater layout = LayoutInflater.from(this);
final View view = layout.inflate(R.layout.dialog_layout, null);
final AlertDialog dialog = new AlertDialog.Builder(this).create();
dialog.setView(view);
dialog.show();

You can do it like below.
AlertDialog.Builder alertBuilder = new AlertDialog.Builder(getActivity());
alertBuilder.setView(getLayoutInflater().inflate(R.layout.layout_alert_dialog,null));
AlertDialog alertDialog = alertBuilder.create();
EditText txtAddNew = alertDialog.findViewById(R.id.txtAddNew);
TextView txtErr = alertDialog.findViewById(R.id.txtErr);
Button btnAdd = alertDialog.findViewById(R.id.btnAdd);
alertDialog.show();

Try using dialog.setContentView(v)
See the difference between setView(v) and setContentView(v) here:
What is difference between Dialog.setContentView( View ) & AlertDialog.setView( View )

Inflate image on top of a popupview object

Currently for inflating images (zoom in animation) we use this library.
while on top of regular activities it looks fine (Simple layout), on top of a popupview the image is "behind" the popup.
Tried to change the elevation parameters, but no luck there either.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:elevation="2dp"
tools:context="com.MapActivity">
<com.vatsal.imagezoomer.ImageZoomButton
android:id="#+id/bt_picture"
android:layout_width="20dp"
android:layout_height="17dp"
android:layout_alignTop="#id/tx_description"
android:layout_marginTop="1dp"
android:layout_alignLeft="#+id/bt_date_time"
android:layout_marginLeft="-25dp"
android:elevation="10dp"
android:background="#drawable/ic_picture" />
</RelativeLayout>
And this is how the popupview and windows are inflated:
popupView = getLayoutInflater().inflate(R.layout.job, null);
popupWindow = new PopupWindow(popupView,
RelativeLayout.LayoutParams.WRAP_CONTENT,
RelativeLayout.LayoutParams.WRAP_CONTENT);
popupWindow.setFocusable(true);
Should we try and use a different approach? Mabye ditch the library and inflate it differently?
Thanks

We've followed mmdreza's advice, here's a snippet of the implementation.
As the documantation states, the alertdialog will be on top of the popupview object.
myHolder.jobImage.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
AlertDialog.Builder mBuilder = new AlertDialog.Builder(v.getContext());
LayoutInflater inflater =
(LayoutInflater)v.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View mView = inflater.inflate(R.layout.inflated_picture_dialog, null);
Picasso.get().load(jobView.getJobImageURL()).fit().into(((ImageButton)mView.findViewById(R.id.inflated_picture)));
mBuilder.setView(mView);
final AlertDialog dialog = mBuilder.create();
dialog.show();
}
});

Find a View of an AlertDialog

I want to get a View from an AlertDialog:
Button R = (Button) findViewById(R.id.toggleButtonA);
But if I do this, it always is null. What can I do to get and edit the view?
Here are the relevant parts of code:
What creates the Dialog:
public void openSelection(View view) {
AlertDialog.Builder builder = new AlertDialog.Builder(Activity.this);
LayoutInflater inflater = this.getLayoutInflater();
builder.setView(inflater.inflate(R.layout.dialayout, null));
AlertDialog dialog = builder.create();
dialog.show();
}
The dialayout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="#+id/toggleButtonA"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:onClick="select"
android:text="All"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#+id/toggleButtonM" />
</android.support.constraint.ConstraintLayout>
</LinearLayout>

You need to assign your inflated view to a variable first. Example:
public void openSelection(View view) {
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
LayoutInflater inflater = this.getLayoutInflater();
View v = inflater.inflate(R.layout.activity_main, null); // this line
builder.setView(v);
AlertDialog dialog = builder.create();
dialog.show();
Button RR = (Button) v.findViewById(R.id.toggleButtonA); // this is how you get a view of the button
}
Please reneame your button variable name R to another name perhaps because R is a reserved word.

Inflate the parent layout first,
LayoutInflater inflater = this.getLayoutInflater();
View parent = inflater.inflate(R.layout.activity_main, null);
then set your builder to that parent view.builder.setView(parent);
you can then perform any view finding with that parent inflated view. Or you can call AlertDialog diag = builder.create(); and perform a find with the diag.findViewById(R.id.name);
so Button btR = (Button) diag.findViewById(R.id.toggleButtonA);
or Button btR = (Button)parent.findViewById(R.id.toggleButtonA);

Dynamically modify layout of a toast Android

I have a trouble creating my app in Android Studio, I explain myself
I created a layout for my toast, the XML looks like this
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="#+id/elemento_correcto_s" android:orientation="horizontal" android:layout_width="match_parent" android:layout_height="match_parent" android:padding="10dp" android:background="#afff45"
android:weightSum="1">
<ImageView android:layout_height="100dp" android:layout_width="100dp" android:src="#drawable/base" android:padding="5dip" android:id="#+id/ok"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="false">
</ImageView>
<TextView android:layout_height="50dp" android:id="#+id/tv" android:layout_width="match_parent" android:text="¡CORRECTO!" android:textColor="#FFF" android:gravity="center_vertical|center_horizontal"
android:layout_gravity="center_vertical"
android:layout_toRightOf="#+id/ok"
android:layout_marginTop="26dp"
>
</TextView>
It works fine when I inflate the layout
LayoutInflater inflater = getLayoutInflater();
View layout = inflater.inflate(
R.layout.elemento_correcto_s
, (ViewGroup) findViewById(R.id.elemento_correcto_s));
this.elementoCorrecto = new Toast(this);
this.elementoCorrecto.setGravity(Gravity.TOP, 0, 0);
this.elementoCorrecto.setDuration(Toast.LENGTH_LONG);
this.elementoCorrecto.setView(layout);
this.elementoCorrecto.show();
But the problem is that I want to change dynamically the text for the TextView, I already tried just calling the TextView and changing the text, but it doesn't work, so I hope you can help me
This is my code
LayoutInflater inflater = getLayoutInflater();
View layout = inflater.inflate(
R.layout.elemento_correcto_xl
, (ViewGroup) findViewById(R.id.elemento_correcto_xl));
TextView tvCombo = (TextView) findViewById(R.id.tv);
if(combo > 1) {
tvCombo.setText("¡" + combo + " VECES SEGUIDAS!");
}
else
tvCombo.setText("¡CORRECTO!");
this.elementoCorrecto = new Toast(this);
this.elementoCorrecto.setGravity(Gravity.TOP, 0, 0);
this.elementoCorrecto.setDuration(Toast.LENGTH_LONG);
this.elementoCorrecto.setView(layout);
this.elementoCorrecto.show();

You can use this method to as i passing the string to show..
public static void makeToast(Context c, String msgToShow){
LayoutInflater inflater = (LayoutInflater) c.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v= inflater.inflate(R.layout.view_toast,null); //your layout to show
TextView text = (TextView) v.findViewById(R.id.textViewToast);
text.setText(msgToShow);
Toast toast = new Toast(c);
toast.setGravity(Gravity.BOTTOM, 10, 25);
toast.setDuration(Toast.LENGTH_LONG);
toast.setView(v);
toast.show();
}
Call it wherever you want in the Activities.

Is there any special reason to show a toast using TextView ? Otherwise you can follow below method to show toast dynamically -
String toastText = "";
if(combo > 1) {
toastText = "¡" + combo + " VECES SEGUIDAS!";
}
else
toastText = "¡CORRECTO!";
Toast.makeText(activity, toastText, Toast.LENGTH_SHORT).show();

Android hyperlinks on TextView in custom AlertDialog not clickable

Following my previous question I still have problems managing hyperlinks on my custom AlertDialog but I believe I narrowed down the problem because I think it only not works because it's a custom dialog.
I have followed all the instructions here and here but can't seem to bypass this situation
On strings.xml I have a string defined this way:
<string name="link_text_manual"><b>text2:</b> This is some other
text, with a link specified
via an <a> tag. Use a \"tel:\" URL
to dial a phone number.
</string>
If I create my dialog this way:
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Data")
.setIcon(R.drawable.info)
.setMessage(R.string.link_text_manual)
.setCancelable(true)
.setNegativeButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.dismiss();
}
});
AlertDialog welcomeAlert = builder.create();
welcomeAlert.show();
// Make the textview clickable. Must be called after show()
((TextView)welcomeAlert.findViewById(android.R.id.message)).setMovementMethod(LinkMovementMethod.getInstance());
it shows like this:
This works as expected and all clicks are clickable.
Now I want the same thing but on a custom layout.
Created a TextView on my info.xml like this:
<TextView
android:id="#+id/infoDetailText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_below="#+id/infoVersionTitle"
android:autoLink="all"
android:linksClickable="true"
android:padding="4dp" />
And this is the code:
Context ctx = this;
LayoutInflater inflater = (LayoutInflater) this.getSystemService(LAYOUT_INFLATER_SERVICE);
View layout = inflater.inflate(R.layout.info, (ViewGroup) findViewById(R.id.infoLayout));
AlertDialog.Builder about = new AlertDialog.Builder(ctx);
about.setView(layout);
about.setTitle("Data");
about.setIcon(R.drawable.info);
AlertDialog displayInfo = about.create();
displayInfo.show();
// Make the textview clickable. Must be called after show()
TextView textView = (TextView) displayInfo.findViewById(R.id.infoDetailText);
textView.setText(R.string.link_text_manual);
textView.setMovementMethod(LinkMovementMethod.getInstance());
With the above code it shows like this (links not clickable and even not marked as links):
If I remove
textView.setMovementMethod(LinkMovementMethod.getInstance());
it shows like the bellow image (Links marked as links but not clickable):
I've also tried to use Linkify and android:autoLink="web" but the result is always the same.
setMessage() works but with a custom layout with a TextView can't make it to work.
Probably this is simple but can't seem to make it work. Any suggestions?
Thanks

You defined the TextView without android:autoLink="all" , android:clickable="true" & android:linksClickable="false"
For info.xml TextView as below
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/infoDetailText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="4dp" />

Anyway, your code works perfectly,...
Code for AlertDialog:
LayoutInflater inflater = LayoutInflater.from(ctx);
View layout = inflater.inflate(R.layout.info, null);
AlertDialog.Builder about = new AlertDialog.Builder(ctx);
about.setTitle("Data");
about.setIcon(R.drawable.info);
// Make the textview clickable. Must be called after show()
TextView textView = (TextView) layout.findViewById(R.id.infoDetailText);
textView.setText(R.string.link_text_manual);
textView.setMovementMethod(LinkMovementMethod.getInstance());
about.setView(layout);
AlertDialog displayInfo = about.create();
displayInfo.show();
Code of TextView XML:
<TextView
android:id="#+id/infoDetailText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_below="#+id/infoVersionTitle"
android:padding="4dp" />
Removed two attributes..
android:autoLink="all"
android:linksClickable="true"

Try this
setText(Html.fromHtml(String));