Develop Reference

Create a Toast that Comes From Top of Screen

I am wondering how do we create a Custom toast in Android that shows on the top of screen like this?
I came from iOS background and now I have to create custom controls like this.
Any pointers please?
Thank you

Check this link: https://github.com/gfranks/GFMinimalNotifications, this is what you want i think and it is working fine for me.
output:
Or you can prepare custom toast like this:
View layout = getLayoutInflater().inflate(R.layout.customtoast,
(ViewGroup) findViewById(R.id.custom_toast_layout));
Toast toast = new Toast(getApplicationContext());
toast.setDuration(Toast.LENGTH_SHORT);
toast.setGravity(Gravity.TOP, 0, 0);
toast.setView(layout);
toast.show();

you can use crouton for this purpose.
Description :
A Crouton will be displayed at the position the developer decides.
Standard will be the top of an application window. You can line up
multiple Croutons for display, that will be shown one after another
Create a Crouton for any CharSequence:
Crouton.makeText(Activity, CharSequence, Style).show();
more details on Crouton, a Context sensitive notifications for Android
there are many you can use for toast describe here

try this ::
Toast toast= Toast.makeText(getApplicationContext(),
"Your string here", Toast.LENGTH_SHORT);
toast.setGravity(Gravity.TOP|Gravity.CENTER_HORIZONTAL, 0, 0);
toast.show();
add this line for position
toast.setGravity(Gravity.TOP, 0, 0);

creat customize toast layout, toast.xml:
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:background="#color/yellow"
android:layout_width="match_parent"
android:padding="8dp"
android:gravity="center"
android:textSize="32sp"
android:layout_height="256dp"/>
create toast using the layout above:
static Toast t;
public static void show(Context c, String s) {
if (t == null) {
t = new Toast(c.getApplicationContext());
t.setGravity(Gravity.TOP | Gravity.FILL_HORIZONTAL, 0, 0);
LayoutInflater inflater = LayoutInflater.from(c);
TextView v = (TextView) inflater.inflate(R.layout.toast, null);
t.setView(v);
t.setDuration(Toast.LENGTH_LONG);
}
TextView v = (TextView) t.getView();
v.setText(s);
t.show();
}

As you can see, there are many solutions. But the easiest way is create a layout in your XML layout file, and make it invisible. When this view needs to be shown make it visible and start an animation.

Android compound drawable

I am using a custom toast, with a ImageView and a TextView using a background in drawable. But the Android Studio tells me to use a single TextView and a compound drawable instead. I have already used a drawable for background, but how can I "draw" a picture at a certain position relative to the TextView?

You can use a single TextView and a CompoundDrawable like this
Toast toast = Toast.makeText(this, "Custom Compount Drawable Toast", Toast.LENGTH_LONG);
View toastView = toast.getView(); //This'll return the default View of the Toast.
TextView toastMessage = (TextView) toastView.findViewById(android.R.id.textview);
toastMessage.setTextSize(25);
toastMessage.setCompoundDrawablesWithIntrinsicBounds(R.drawable.image_id, 0, 0, 0);
toastMessage.setGravity(Gravity.CENTER);
toastMessage.setCompoundDrawablePadding(16);
toastView.setBackgroundColor(Color.CYAN);
toast.show();

Custom toast inflate root meaning

LayoutInflater inflater = getLayoutInflater();
View layout = inflater.inflate(R.layout.custom_toast,
(ViewGroup) findViewById(R.id.toast_layout_root));
TextView text = (TextView) layout.findViewById(R.id.text);
text.setText("This is a custom toast");
Toast toast = new Toast(getApplicationContext());
toast.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
toast.setDuration(Toast.LENGTH_LONG);
toast.setView(layout);
toast.show();
This is a lines of creating custom toast (from: http://developer.android.com/guide/topics/ui/notifiers/toasts.html)
It works fine, but I don't know why use the code
(ViewGroup) findViewById(R.id.toast_layout_root)
I think findViewById method runs find view "present" element,
so that method returns null,
That means, meaningless code, doesn't it?
Why I wonder that problem is I try to use create custom toast in Service
Service has not findViewById, you know,
so I just try to inflate(id, null) that lead to my layout broken,
I already read http://www.doubleencore.com/2013/05/layout-inflation-as-intended/ article.
How can I inflate properly without my layout parameter loss information

Android make Spanned containing link clickable in Toast

Through a webservice I get an Error message containing a link (e.g.
Click <a href='blablabla'>here</a>
). I use fromHtml to turn it into a spanned and then show it in a custom Toast.
Inside the toast the text is shown and the 'here' is underlined, just like a link. However when I click it, it doesn't do anything.
How should I solve this? Is there any way to deduct the link from the xml (e.g.
<ERROR>Click <a href='blabla'>here</a></ERROR>
) so I can create a button to push
which opens the link in a Webview?
Here's the relevant code:
My main activity
CommonCode.showToast(error, mContext, mViewGroup, true);
CommonCode
public static void showToast(Spanned toastString, Context context, View view, Boolean isLink) {
LayoutInflater inflater = LayoutInflater.from(context);
View layout = inflater.inflate(R.layout.toast_layout, (ViewGroup) view);
TextView text = (TextView) layout.findViewById(R.id.toastText);
if(isLink == true) {
text.setMovementMethod(LinkMovementMethod.getInstance());
}
text.setText(toastString);
Toast toast = new Toast(context);
toast.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
toast.setDuration(Toast.LENGTH_LONG);
toast.setView(layout);
toast.show();
}

Toasts were designed to place a small amount of information in front of the user for a short time. If you need buttons pressed try a dialog instead of a toast.

Android: How to set the colour of a Toast's text

I am displaying a toast message as the result of an if statement using the following code:
Toast.makeText(getBaseContext(), "Please Enter Price", Toast.LENGTH_SHORT).show();
It is displayed as white text on a white background, as such it can not be read! My question is, how can I change the colour of the toast's text?

You can achieve this very easily, without creating a custom layout by modifying the default Toast :
Toast toast = Toast.makeText(this, resId, Toast.LENGTH_SHORT);
TextView v = (TextView) toast.getView().findViewById(android.R.id.message);
v.setTextColor(Color.RED);
toast.show();
You can find the layout used by the default toast view in the Android SDK :
$ANDROID-SDK$/platforms/android-8/data/res/layout/transient_notification.xml

You can create a custom Toast view to suit your requirements. See the section titled "Creating a Custom Toast View" at http://developer.android.com/guide/topics/ui/notifiers/toasts.html

You may want to create a custom Toast
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/toast_layout_root"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="10dp"
android:background="#DAAA"
>
<ImageView android:id="#+id/image"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_marginRight="10dp"
/>
<TextView android:id="#+id/text"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:textColor="#FFF"
/>
</LinearLayout>
-
LayoutInflater inflater = getLayoutInflater();
View layout = inflater.inflate(R.layout.toast_layout,
(ViewGroup) findViewById(R.id.toast_layout_root));
ImageView image = (ImageView) layout.findViewById(R.id.image);
image.setImageResource(R.drawable.android);
TextView text = (TextView) layout.findViewById(R.id.text);
text.setText("Hello! This is a custom toast!");
Toast toast = new Toast(getApplicationContext());
toast.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
toast.setDuration(Toast.LENGTH_LONG);
toast.setView(layout);
toast.show();
Source

The simplest way to change the background color of a toast and the background color of a toast's text:
View view;
TextView text;
Toast toast;
toast.makeText(this, resId, Toast.LENGTH_SHORT);
view = toast.getView();
text = (TextView) view.findViewById(android.R.id.message);
text.setTextColor(getResources().getColor(R.color.black));
text.setShadowLayer(0,0,0,0);
view.setBackgroundResource(R.color.white);
toast.show();

Try to use Toasty library. It is really easy to use it - https://github.com/GrenderG/Toasty

You can also use SpannableString. It can also color parts of the string.
SpannableString spannableString = new SpannableString("This is red text");
spannableString.setSpan(
new ForegroundColorSpan(getResources().getColor(android.R.color.holo_red_light)),
0,
spannableString.length(),
0);
Toast.makeText(this, spannableString, Toast.LENGTH_SHORT).show();

You can try this if you don't wish to use any custom libraries
Toast toast=Toast.makeText(getApplicationContext(),"This is advanced toast",Toast.LENGTH_LONG);
View view=toast.getView();
TextView view1=(TextView)view.findViewById(android.R.id.message);
view1.setTextColor(Color.YELLOW);
view.setBackgroundResource(R.color.colorPrimary);
toast.show();

Here is an example in Kotlin, showing how you can change the background color of a toast and it's text color :
val toast = Toast.makeText(context, text, Toast.LENGTH_SHORT)
toast.view.background.setColorFilter(ContextCompat.getColor(context,
R.color.white), PorterDuff.Mode.SRC_IN)
val textView = toast.view.findViewById(android.R.id.message) as TextView
textView.setTextColor(ContextCompat.getColor(context, R.color.black))
toast.show()

The solution with setting a custom view on Toast is deprecated for API 30 and forward.
Documentation says
apps
* targeting API level {#link Build.VERSION_CODES#R} or higher that are in the background
* will not have custom toast views displayed.
The alternative is
Toast.makeText(applicationContext,
HtmlCompat.fromHtml("<font color='red'>custom toast message</font>", HtmlCompat.FROM_HTML_MODE_LEGACY),
Toast.LENGTH_LONG).show()
Html color tag can also be <font color='#ff6347'>
For every modification that has to do with the text displayed the above solution would be enough. You can for example make the text bold by inserting <b>my text</b> or you maybe want to change the font-familywith <font font-family='...'> my text </font> For all those changes that solution will be enough.
If you want to modify the container though with properties like background-color the only alternative is to use Snackbar. View can not be modified for Toast anymore.

https://developer.android.com/guide/topics/ui/notifiers/toasts?hl=es-419#java
Context context = getApplicationContext();
CharSequence text = "Hello toast!";
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(context, text, duration);
toast.show();