How to show Snackbar when Activity starts?

Question

I want to show android Snackbar (android.support.design.widget.Snackbar) when the activity starts just like we show a Toast.

Answer 1

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();

Answer 2

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

Answer 3

Try this

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

Answer 4

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.

Answer 5

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();
}

Answer 6

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