How to show Snackbar when Activity starts?

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最佳答案

Just point to any View inside the Activity's XML. You can give an id to the root viewGroup, for example, and use:

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main_activity);
View parentLayout = findViewById(android.R.id.content);
Snackbar.make(parentLayout, "This is main activity", Snackbar.LENGTH_LONG)
.setAction("CLOSE", new View.OnClickListener() {
@Override
public void onClick(View view) {


}
})
.setActionTextColor(getResources().getColor(android.R.color.holo_red_light ))
.show();
//Other stuff in OnCreate();
}

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call this method in onCreate

Snackbar snack = Snackbar.make(
(((Activity) context).findViewById(android.R.id.content)),
message + "", Snackbar.LENGTH_SHORT);
snack.setDuration(Snackbar.LENGTH_INDEFINITE);//change Duration as you need
//snack.setAction(actionButton, new View.OnClickListener());//add your own listener
View view = snack.getView();
TextView tv = (TextView) view
.findViewById(android.support.design.R.id.snackbar_text);
tv.setTextColor(Color.WHITE);//change textColor


TextView tvAction = (TextView) view
.findViewById(android.support.design.R.id.snackbar_action);
tvAction.setTextSize(16);
tvAction.setTextColor(Color.WHITE);


snack.show();

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You can try this library. This is a wrapper for android default snackbar. https://github.com/ChathuraHettiarachchi/CSnackBar

Snackbar.with(this,null)
.type(Type.SUCCESS)
.message("Profile updated successfully!")
.duration(Duration.SHORT)
.show();

This contains multiple types of snackbar and even a customview intergrated snackbar

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I have had trouble myself displaying Snackbar until now. Here is the simplest way to display a Snackbar. To display it as your Main Activity Starts, just put these two lines inside your OnCreate()

    Snackbar snackbar = Snackbar.make(findViewById(android.R.id.content), "Welcome To Main Activity", Snackbar.LENGTH_LONG);
snackbar.show();

P.S. Just make sure you have imported the Android Design Support.(As mentioned in the question).

For Kotlin,

Snackbar.make(findViewById(android.R.id.content), message, Snackbar.LENGTH_SHORT).show()

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Try this

Snackbar.make(findViewById(android.R.id.content), "Got the Result", Snackbar.LENGTH_LONG)
.setAction("Submit", mOnClickListener)
.setActionTextColor(Color.RED)
.show();

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A utils function for show snack bar

fun showSnackBar(activity: Activity, message: String, action: String? = null,
actionListener: View.OnClickListener? = null, duration: Int = Snackbar.LENGTH_SHORT) {
val snackBar = Snackbar.make(activity.findViewById(android.R.id.content), message, duration)
.setBackgroundColor(Color.parseColor("#CC000000")) // todo update your color
.setTextColor(Color.WHITE)
if (action != null && actionListener!=null) {
snackBar.setAction(action, actionListener)
}
snackBar.show()
}

Example using in Activity

  showSnackBar(this, "No internet")
showSnackBar(this, "No internet", duration = Snackbar.LENGTH_LONG)
showSnackBar(activity, "No internet", "OK", View.OnClickListener {
// handle click
})

Example using in Fragment

  showSnackBar(getActivity(), "No internet")

Hope it help

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It can be done simply by using the following codes inside onCreate. By using android's default layout

Snackbar.make(findViewById(android.R.id.content),"Your Message",Snackbar.LENGTH_LONG).show();

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You can also define a super class for all your activities and find the view once in the parent activity.

for example

AppActivity.java :

public class AppActivity extends AppCompatActivity {


protected View content;


@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
changeLanguage("fa");
content = findViewById(android.R.id.content);
}
}

and your snacks would look like this in every activity in your app:

Snackbar.make(content, "hello every body", Snackbar.LENGTH_SHORT).show();

It is better for performance you have to find the view once for every activity.

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Simple way to show some text:

Snackbar.make(view, "<text>", Snackbar.LENGTH_SHORT).show();
// or
Snackbar.make(view, "<text>", Snackbar.LENGTH_LONG).show();

and to show text with a button:

Snackbar.make(view, "<text>", Snackbar.LENGTH_SHORT).setAction("<button_text>", new View.OnClickListener() {
@Override
public void onClick(View view) {
// operation to perform when the button is clicked
}
}).show();

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For those developers who use data binding in their project.

Snackbar.make(binding.getRoot(), "This is your text", Snackbar.LENGTH_LONG)
.setAction("CLOSE", view -> {
//close
})
.setActionTextColor(getResources().getColor(android.R.color.holo_red_light ))
.show();

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if you use Snackbar in Activity use this code

View view = findViewById(android.R.id.content); Snackbar.make(view, "This is main activity", Snackbar.LENGTH_LONG).show();