Spinner, Managing size and text

Hello,

Sometimes, when using a spinner, you want to manage its size and the font of the displayed text.

To do that you need to do 3 actions (I do that change on the Android spinner example : http://developer.android.com/guide/tutorials/views/hello-spinner.html) 

1.      Create a spinnertext.xml in your layout folder and define how the spinner’s title has to be displayed

2.      Change your spinner size in your main.xml (where your spinner is defined)

3.      Change your spinner declaration in your activity

The file spinnertext.xml creates in the res\layout folder :

xml version="1.0" encoding="utf-8"?>

<TextView xmlns:android="http://schemas.android.com/apk/res/android"

      android:text="@+id/TextView01"

      android:id="@+id/TextView01"

      android:layout_width="wrap_content"   

      android:layout_height="wrap_content"

      android:textSize="12sp"

      android:textColor="#FFFFFFFF"

      android:gravity="center"/>

The declaration of the spinner in the file main.xml (in res\layout), to manage its size :

<Spinner

        android:id="@+id/spinner"

        android:layout_width="fill_parent"

        android:layout_height="32dip"

        android:drawSelectorOnTop="true"

        android:prompt="@string/spinner_prompt"

    />

And the declaration of the spinner in the Activity (in yellow highltight the change to do):

Spinner s = (Spinner) findViewById(R.id.spinner);

ArrayAdapter adapter = ArrayAdapter.createFromResource(this, R.array.sensors, R.layout.spinnertext);

adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

s.setAdapter(adapter);

//when an item is selected call the selectSensor method

s.setOnItemSelectedListener(new OnItemSelectedListener() {

      @Override

      public void onItemSelected(AdapterView parent, View view, int position, long id) {

            selectSensor(parent.getItemAtPosition(position));

      }

      @Override

            public void onNothingSelected(AdapterView arg0) {

            }

});

So, Thanks who?
Thanks, Android2ee, the Android Programming Ebooks :o)

Mathias Séguy
mathias.seguy.it@gmail.com
Auteur Android2EE
Ebooks to learn Android Programming.

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