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public class MainActivity extends AppCompatActivity {
    private EditText editID;
    private EditText editName;
    private EditText editDienthoai;
    private EditText editDiachi;
    private EditText editEmail;
    private TextView tvQLSV;

//    private ListView listView;
    private ArrayAdapter <String> adapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
//        String[] items = {"Item 1","Item 2","Item 3","Item 4","Item 5"};
//        adapter= new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, items);
//        listView = findViewById(R.id.listView);
//        listView.setAdapter(adapter);
//        registerForContextMenu(listView);
        editID = findViewById(R.id.edtID);
        editName = findViewById(R.id.edtName);
        editDienthoai = findViewById(R.id.edtSDT);
        editDiachi = findViewById(R.id.edtDiachi);
        editEmail = findViewById(R.id.edtEmail);
        tvQLSV = findViewById(R.id.tvQLSV);

        findViewById(R.id.btnSave).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                getData();
            }
        });
    }
    private void getData(){
        String ID= editID.getText().toString();
        String Name= editName.getText().toString();
        String SDT= editDienthoai.getText().toString();
        String Diachi= editDiachi.getText().toString();
        String Email= editEmail.getText().toString();
        tvQLSV.setText(ID);
        tvQLSV.setText(Name);
        tvQLSV.setText(SDT);
        tvQLSV.setText(Diachi);
        tvQLSV.setText(Email);
    }