I have a screen where I hide the pages, and when I clicked on the page it opens a pop up where I can enter the value of the pages instead of going through.
The page is nothing more than the ID of my values in the database, and I only write what I read in the ID.
When I run the code it fails on that line
valor = etpage.getText().toString();
where value is a global scope variable, of type String, and the editable field that receives only accepts number.
the code that generates the pop up
@Override
public void onWindowFocusChanged(boolean hasFocus) {
int[] location = new int[2];
Button button = (Button) findViewById(R.id.tv2);
button.getLocationOnScreen(location);
p.x = location[0];
p.y = location[1];
}
@SuppressWarnings("deprecation")
public void showPopup(final Activity context, Point p) {
int popupWidth = 300;
int popupHeight = 400;
LinearLayout viewGroup = (LinearLayout) context.findViewById(R.id.popup);
LayoutInflater layoutInflater = (LayoutInflater)
context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View layout = layoutInflater.inflate(R.layout.popup, viewGroup);
final PopupWindow popup = new PopupWindow(context);
popup.setContentView(layout);
popup.setWidth(popupWidth);
popup.setHeight(popupHeight);
popup.setFocusable(true);
popup.setBackgroundDrawable(new BitmapDrawable());
popup.showAtLocation(layout,
Gravity.NO_GRAVITY, 1, 1 );
Button close = (Button) layout.findViewById(R.id.buttonir);
close.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
valor = etpage.getText().toString();
popup.dismiss();
}
});
}
} 
screenerror:unknownerror:Java.Lang.NullPointerException
publicclassMainActivityextendsActionBarActivity{SQLiteDatabaseBanco=null;Cursorcursor;ToggleButtonbt01,bt02,bt03,bt04,bt05,bt06,bt07,bt08,bt09,bt10,bt11,bt12,bt13,bt14,bt15;Buttonbtnext,btprevious,pageview,btdescricao,botaopage;EditTextetpage,etpage2;intpage=1;Stringvalor="1";
int progress;
private Point p = new Point();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_PROGRESS);
setContentView(R.layout.activity_main);
Log.i("main", "Executou o onCreate();");
abrebanco();
iniciaobjetos();
Intent ipage = getIntent();
page = ipage.getIntExtra("pagina2", 1);
if (page<10)
pageview.setText("0"+String.valueOf(page));
else pageview.setText(String.valueOf(page));
buscardados();
setacursor(page);
escrevebotao();
btprevious.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (page>1)
page--;
else
page=60;
setacursor(page);
escrevebotao();
if (page<10)
pageview.setText("0"+String.valueOf(page));
else pageview.setText(String.valueOf(page));
}
});
btprevious.setOnLongClickListener(new View.OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
if (page>1)
page--;
else
page=60;
setacursor(page);
escrevebotao();
if (page<10)
pageview.setText("0"+String.valueOf(page));
else pageview.setText(String.valueOf(page));
return false;
}
});
btnext.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (page<60)
page++;
else
page=1;
setacursor(page);
escrevebotao();
if (page<10)
pageview.setText("0"+String.valueOf(page));
else pageview.setText(String.valueOf(page));
}
});
botaopage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (p != null)
showPopup(MainActivity.this, p);
page = Integer.valueOf(valor);
if (page>60)
page=60;
if (page<0)
page=0;
if (page<10)
pageview.setText("0"+String.valueOf(page));
else pageview.setText(String.valueOf(page));
}
});
}
public void setacursor(Integer pagina){
cursor.moveToPosition(pagina-1);
}
private void escrevebotao() {
btdescricao.setText(retornadado("bt"));
bt01.setTextOff("01 \n" + retornadado("bt01"));
bt01.setText("01 \n" + retornadado("bt01"));
bt01.setTextOn("01\n" + retornadado("bt01"));
bt02.setTextOff("02 \n" + retornadado("bt02"));
bt02.setText("02 \n" + retornadado("bt02"));
bt02.setTextOn("02 \n" + retornadado("bt02"));
bt03.setTextOff("03 \n" + retornadado("bt03"));
bt03.setText("03 \n" + retornadado("bt03"));
bt03.setTextOn("03 \n" + retornadado("bt03"));
bt04.setTextOff("04 \n" + retornadado("bt04"));
bt04.setText("04 \n" + retornadado("bt04"));
bt04.setTextOn("04 \n" + retornadado("bt04"));
bt05.setTextOff("05 \n" + retornadado("bt05"));
bt05.setText("05 \n" + retornadado("bt05"));
bt05.setTextOn("05 \n" + retornadado("bt05"));
bt06.setTextOff("06 \n" + retornadado("bt06"));
bt06.setText("06 \n" + retornadado("bt06"));
bt06.setTextOn("06 \n" + retornadado("bt06"));
bt07.setTextOff("07 \n" + retornadado("bt07"));
bt07.setText("07 \n" + retornadado("bt07"));
bt07.setTextOn("07 \n" + retornadado("bt07"));
bt08.setTextOff("08 \n" + retornadado("bt08"));
bt08.setText("08 \n" + retornadado("bt08"));
bt08.setTextOn("08 \n" + retornadado("bt08"));
bt09.setTextOff("09 \n" + retornadado("bt09"));
bt09.setText("09 \n" + retornadado("bt09"));
bt09.setTextOn("09 \n" + retornadado("bt09"));
bt10.setTextOff("10 \n" + retornadado("bt10"));
bt10.setText("10 \n" + retornadado("bt10"));
bt10.setTextOn("10 \n" + retornadado("bt10"));
bt11.setTextOff("11 \n" + retornadado("bt11"));
bt11.setText("11 \n" + retornadado("bt11"));
bt11.setTextOn("11 \n" + retornadado("bt11"));
bt12.setTextOff("12 \n" + retornadado("bt12"));
bt12.setText("12 \n" + retornadado("bt12"));
bt12.setTextOn("12 \n" + retornadado("bt12"));
bt13.setTextOff("13 \n" + retornadado("bt13"));
bt13.setText("13 \n" + retornadado("bt13"));
bt13.setTextOn("13 \n" + retornadado("bt13"));
bt14.setTextOff("14 \n" + retornadado("bt14"));
bt14.setText("14 \n" + retornadado("bt14"));
bt14.setTextOn("14 \n" + retornadado("bt14"));
bt15.setTextOff("15 \n" + retornadado("bt15"));
bt15.setText("15 \n" + retornadado("bt15"));
bt15.setTextOn("15 \n" + retornadado("bt15"));
}
public void nextdado() {
try{
cursor.moveToNext();
}
catch(Exception erro){
Exibirmensagem("ERRO!","Erro ao avançar com o " +
"crusor: "+ erro.getMessage() , "OK");
}
}
private void iniciaobjetos() {
try{
bt01 = (ToggleButton) findViewById(R.id.btt1);
bt02 = (ToggleButton) findViewById(R.id.btt2);
bt03 = (ToggleButton) findViewById(R.id.btt3);
bt04 = (ToggleButton) findViewById(R.id.btt4);
bt05 = (ToggleButton) findViewById(R.id.btt5);
bt06 = (ToggleButton) findViewById(R.id.btt6);
bt07 = (ToggleButton) findViewById(R.id.btt7);
bt08 = (ToggleButton) findViewById(R.id.btt8);
bt09 = (ToggleButton) findViewById(R.id.btt9);
bt10 = (ToggleButton) findViewById(R.id.btt10);
bt11 = (ToggleButton) findViewById(R.id.btt11);
bt12 = (ToggleButton) findViewById(R.id.btt12);
bt13 = (ToggleButton) findViewById(R.id.btt13);
bt14 = (ToggleButton) findViewById(R.id.btt14);
bt15 = (ToggleButton) findViewById(R.id.btt15);
btnext = (Button) findViewById(R.id.btNext);
btprevious = (Button) findViewById(R.id.BtPrevious);
pageview = (Button) findViewById(R.id.tv2);
btdescricao = (Button) findViewById(R.id.btdescricao);
botaopage = (Button)findViewById(R.id.tv2);
etpage = (EditText)findViewById(R.id.etpage);
}
catch(Exception erro){
Exibirmensagem("ERRO", "erro ao iniciar objetos" +erro.getMessage(),"OK");
}
}
public void abrebanco(){
try{
Banco = openOrCreateDatabase("banco", MODE_WORLD_WRITEABLE, null);
String sql = "CREATE TABLE IF NOT EXISTS pages (ID INTEGER PRIMARY KEY AUTOINCREMENT" +
", bt TEXT,bt01 TEXT, bt02 TEXT, bt03 TEXT, bt04 TEXT, bt05 TEXT, bt06 TEXT, " +
"bt07 TEXT, bt08 TEXT, bt09 TEXT, bt10 TEXT, bt11 TEXT, bt12 TEXT, " +
"bt13 TEXT, bt14 TEXT, bt15 TEXT)";
Banco.execSQL(sql);
}
catch(Exception erro){
Exibirmensagem("BANCO", "erro ao criar banco: =/"+ erro.getMessage(), "ok");
}
}
public void fechabanco(){
try{
Banco.close();
}
catch(Exception erro){
Exibirmensagem("BANCO", "erro ao fechar banco: "+ erro.getMessage(), "ok");
}
}
public boolean buscardados(){
try{
cursor = Banco.query("pages",
new String [] {"bt","bt01","bt02","bt03","bt04","bt05",
"bt06","bt07","bt08","bt09","bt10",
"bt11","bt12","bt13","bt14","bt15"}
, null, null, null, null, null);
if (cursor.getCount() != 0){
cursor.moveToFirst();
}
return true;
}
catch(Exception erro){
Exibirmensagem("BANCO", "erro ao buscar no banco: "+ erro.getMessage(), "ok");
return false;
}
}
public String retornadado(String x){
String dado = cursor.getString(cursor.getColumnIndex(x));
return dado;
}
public void Exibirmensagem (String titulo,
String texto, String button)
{
AlertDialog.Builder mensagem =
new AlertDialog.Builder(MainActivity.this);
mensagem.setTitle(titulo);
mensagem.setMessage(texto);
mensagem.setNeutralButton(button,null);
mensagem.show();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.menueditar) {
Intent iedicao = new Intent(MainActivity.this, paginadeedicao.class);
iedicao.putExtra("pagina", page);
startActivity(iedicao);
MainActivity.this.finish();
//startActivity(new Intent(MainActivity.this, edicao.class));
return true;
}
if (id == R.id.menusair) {
AlertDialog.Builder mensagem =
new AlertDialog.Builder(MainActivity.this);
mensagem.setTitle("Atenção?");
mensagem.setMessage("Deseja realmente sair?");
mensagem.setPositiveButton("Sim",new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int id) {
MainActivity.this.finish();
}});
mensagem.setNegativeButton("Não",null);
mensagem.show();
return true;
}
if (id == R.id.menusobre) {
Exibirmensagem("Playback View", " Esse aplicativo foi desenvolvido com " +
"objetivo de criar um roller digital e ecologicamente correto, para os " +
"iluminadores utilizarem como guia dos seus playbacks. \n"+
" Todo o copyright ou direitos de propriedade intelectual " +
"presente em Textos, Imagens, Sons, Softwares e outros conteúdos " +
"do aplicativo, são de propriedade de Star Lighting Division! \n"+
" Em caso de sugestões, " +
"dúvidas e outros, entre em contato conosco: " +
"\n(19) 3838-8320 ou [email protected].", "OK");
return true;
}
if (id == R.id.menusite) {
Uri uriPaginaWeb = Uri.parse("http://star.ind.br/");
Intent IPaginaWeb = new Intent(Intent.ACTION_VIEW,uriPaginaWeb);
startActivity(IPaginaWeb);
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
protected void onStart() {
super.onStart();
Log.i("main", "Executou o onStart();");
}
@Override
protected void onResume() {
super.onResume();
Log.i("main", "Executou o onResume();");
}
@Override
protected void onPause() {
super.onPause();
Log.i("main", "Executou o onPause();");
}
@Override
protected void onStop() {
super.onStop();
Log.i("main", "Executou o onStop();");
}
@Override
protected void onDestroy() {
super.onDestroy();
//banco.close();
Log.i("main", "Executou o onDestry();");
}
@Override
public void onWindowFocusChanged(boolean hasFocus) {
int[] location = new int[2];
Button button = (Button) findViewById(R.id.tv2);
button.getLocationOnScreen(location);
p.x = location[0];
p.y = location[1];
}
@SuppressWarnings("deprecation")
public void showPopup(final Activity context, Point p) {
int popupWidth = 300;
int popupHeight = 400;
Boolean x=false;
etpage2 = (EditText) findViewById(R.id.buttonir);
LinearLayout viewGroup = (LinearLayout) context.findViewById(R.id.popup);
LayoutInflater layoutInflater = (LayoutInflater)
context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View layout = layoutInflater.inflate(R.layout.popup, viewGroup);
final PopupWindow popup = new PopupWindow(context);
popup.setContentView(layout);
popup.setWidth(popupWidth);
popup.setHeight(popupHeight);
popup.setFocusable(true);
popup.setBackgroundDrawable(new BitmapDrawable());
popup.showAtLocation(layout,
Gravity.NO_GRAVITY, 1, 1 );
Button close = (Button) layout.findViewById(R.id.buttonir);
close.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
popup.dismiss();
valor = etpage.getText().toString();
}
});
}
}