Java Android ArrayList with Id

Question

I have ten numberDecimal inputs with names input_1, input_2,...,input_10. In the mainActivity I'm getting theirs IDs by this way

EditText input_1 = (EditText) findViewById(R.id.input_1);
EditText input_2 = (EditText) findViewById(R.id.input_2);
...
EditText input_10 = (EditText) findViewById(R.id.input_10);

So I was wondering is there any way to get the IDs with FOR or any other cycle and arrays. For example something like this

for(i=1;i<10;i++) {
 EditText input_i = (EditText) findViewById(R.id.input_i);
}

I've tried this but it didn't work. Sorry for my english and thank you in advance :)

print the xml where you are using this.

Android Killer
– Android Killer

2013-12-15 15:44:15 +00:00
Commented Dec 15, 2013 at 15:44 — Android Killer
– Android Killer, Commented Dec 15, 2013 at 15:44

score 1 · Accepted Answer · 2013-12-15 15:53:57Z

1

You can use Context.getResources(), then Resources.getResourceIdentifier() to get the identifier of your edittext :

for(i=1;i<10;i++) {
    int resourceIdentifier = this.getResources().getResourceIdentifier("input_".concat(String.valueOf(i));
    EditText input_i = (EditText) findViewById(resourceIdentifier, "id", this.getPackageName()));
}

edited Dec 15, 2013 at 15:53

answered Dec 15, 2013 at 15:48

user2058839

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Comments

Md Abdul Gafur · Accepted Answer · 2013-12-15 15:53:05Z

0

Create an Array of EditText and then Access this Array of EditText

Integer[] input_edit={R.id.input_1, R.id.input_2, R.id.input_3};


for (int i = 0; i < input_edit.length; i++) {
 EditText input = (EditText) findViewById(input_edit[i]);
**Then put this EditText Value in any Array if you need to work out side of this loop**         
}

Thanks

answered Dec 15, 2013 at 15:53

Md Abdul Gafur

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Comments

Luis Pena · Accepted Answer · 2013-12-15 16:25:28Z

This is a efficient way of doing that. I used 2 methods, they are: getResource() and getIdentifier()

The first one is used to get access to the resources of your applicacion for example: you could use it to get a reference to a string using getResource().getString(id) or a drawable using getResource().getDrawable(id). You can get more info about its method here: Resources Documentation

The second one is a method from Resource class used to get an ID.

 EditText input;

for(int x = 0; x < 10; x++){

  //here you get the id

 int current_id =  this.getResources().getIdentifier("input_".concat(String.valueOf(i)), "id" ,getPackageName());

 //here you set the id
 input = (EditText) findViewById(current_id);

}

getIdentifier() needs 3 arguments and they are: (String name, String defType, String defPackage)

You can read about them here: Resource documentation (GetIdentifier() Method)

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