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  1. import android.support.v7.app.AppCompatActivity;
  2. import android.os.Bundle;
  3. import android.view.View;
  4. import android.widget.Button;
  5. import android.widget.EditText;
  6.  
  7. import com.google.firebase.database.DatabaseReference;
  8. import com.google.firebase.database.FirebaseDatabase;
  9.  
  10. public class MainActivity extends AppCompatActivity{
  11.  
  12.     @Override
  13.     protected void onCreate(Bundle savedInstanceState) {
  14.         super.onCreate(savedInstanceState);
  15.         setContentView(R.layout.activity_main);
  16.  
  17.         final EditText edtPesan = (EditText)findViewById(R.id.edt_pesan);
  18.         Button btnSend = (Button)findViewById(R.id.btn_pesan);
  19.  
  20.         btnSend.setOnClickListener(new View.OnClickListener() {
  21.             @Override
  22.             public void onClick(View v) {
  23.                 String data = edtPesan.getText().toString();
  24.                 sendData(data);
  25.                 Toast.makeText(MainActivity.this, "terkirim", Toast.LENGTH_SHORT).show();
  26.             }
  27.         });
  28.     }
  29.  
  30.     private void sendData(String pesan) {
  31.         FirebaseDatabase database = FirebaseDatabase.getInstance();
  32.         DatabaseReference myRef = database.getReference("pesan");
  33.  
  34.         myRef.setValue(pesan);
  35.     }
  36. }
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