1
My problem is this:
I have a string array with the name phrases, where I have several sentences.
And I’d like to show them all in one TextView
one by one each time you press the button "next".
Any hint will be welcomed thanks.
1
My problem is this:
I have a string array with the name phrases, where I have several sentences.
And I’d like to show them all in one TextView
one by one each time you press the button "next".
Any hint will be welcomed thanks.
1
Hello !
Here’s an example of what your OnCLick
:
int ponteiro = 0;
private View.OnClickListener nextAction(){
return new View.OnClickListener() {
@Override
public void onClick(View v) {
// vamos ver se o ponteiro é menor que o tamanho da lista
// tiramos 1, pois abaixo vamos adicionar mais 1!
if(ponteiro < (frases.size()-1) ){
// vamos andar uma posição com o ponteiro
ponteiro++;
}else{
// vamos zerar o ponteiro
ponteiro = 0;
}
// Agora vamos mostrar o item da Lista
meuTextView.setText(frases.get(ponteiro));
};
}
To add the action to your button :
botaoProximo.setOnClickListener(nextAction());
speaks Thiago Luiz Domacosk, thanks for trying to help guy, so. declared my array like this: String [] sentences = getResources(). getStringArray (R.array.phrases); however when I try to use the combination.size phrases in the iteration if "size " does not exist...can you tell me why?
Try length in place of size(). The estate length refers to the String[], and the method size() and of a List<String>
And instead of get phrases(pointer) use [pointer]
Vlw Thiago Luiz Domacoski. It worked. Thank you.
Thiago tried to implement the "previous" button and I did so within the method: 'if (pointer<phrases.langth){ pointer-;} Else {what do I put here? }' I’ve tried several ways but I couldn’t help myself?
If next we go to the top of the list, in the previous, we go to the end! Then put: pointer=sentences.length!
The if is different in the case of the previous one: must compare if pointer is greater than zero: if(pointer<0){ pointer-; }Else{pointer =phrases.length;}
Good your logic...I did as you explained but when you arrive at position 0, instead of going to the end of the array the app hangs...where will be the error?
Sorry, try as follows: if(pointer>0) While greater zero goes down, or it goes back to the end
Not giving the error now happens in passing 1 to 0 the app hangs
What error it shows?
Try: pointer= phrases.length-1;
Now it worked Thiago, all that was missing was "sentences.length-1
Thanks Thiago
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– Thiago Luiz Domacoski