toast

MainActivity.java

....
public class MainActivity extends AppCompatActivity {
    private Button btnSimpleToast,btnPositionedToast,btnCustomToast;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

....

        btnSimpleToast.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(MainActivity.this, "Simple toast", Toast.LENGTH_SHORT).show();
            }
        });


        btnPositionedToast.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast toast = Toast.makeText(MainActivity.this, "Po toast", Toast.LENGTH_SHORT);
                toast.setGravity(Gravity.TOP|Gravity.RIGHT, 0, 0);
                toast.show();
            }
        });

        btnCustomToast.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                LayoutInflater inflater = getLayoutInflater();
                View layout = inflater.inflate(R.layout.custom_toast,
                        (ViewGroup) findViewById(R.id.container));

                Toast toast = new Toast(getApplicationContext());
                toast.setDuration(Toast.LENGTH_LONG);
                toast.setView(layout);
                toast.show();
            }
        });
    }
}