Use declare styleable to set custom component input type

Question

I have a CompositeComponent (EditText+ImageButton) When clicking on button the edittext content will be cleared. It is working fine. My problem is setting attributes to my c

Answer 1

I managed to do it with raw int value: I think it is not good practice. I can assign raw values like this: cet:InputType="2"

2 for number (Referred for values: http://developer.android.com/reference/android/text/InputType.html#TYPE_CLASS_NUMBER and http://developer.android.com/reference/android/R.styleable.html#TextView_inputType)

I believe <attr name="InputType" format="reference" /> can help but don't know how to use it.

Answer 2

Okay, so I know this question is pretty old but I found the REAL correct answer.

I found the attrs.xml file in here that Android uses and every declare_styleable is there, so from the standard attributes you can find the inputType attribute that is defined as below

<!-- The type of data being placed in a text field used to help an
         input method decide how to let the user enter text.  The constants
         here correspond to those defined by
         {@link android.text.InputType}.  Generally you can select
         a single value, though some can be combined together as
         indicated.  Setting this attribute to anything besides
         <var>none</var> also implies that the text is editable. -->
    <attr name="inputType">
        <!-- There is no content type.  The text is not editable. -->
        <flag name="none" value="0x00000000" />
        <!-- Just plain old text.  Corresponds to
             {@link android.text.InputType#TYPE_CLASS_TEXT} |
             {@link android.text.InputType#TYPE_TEXT_VARIATION_NORMAL}. -->
        <flag name="text" value="0x00000001" />
        <!-- Can be combined with <var>text</var> and its variations to
             request capitalization of all characters.  Corresponds to
             {@link android.text.InputType#TYPE_TEXT_FLAG_CAP_CHARACTERS}. -->
        <flag name="textCapCharacters" value="0x00001001" />
        <!-- Can be combined with <var>text</var> and its variations to
             request capitalization of the first character of every word.  Corresponds to
             {@link android.text.InputType#TYPE_TEXT_FLAG_CAP_WORDS}. -->
        <flag name="textCapWords" value="0x00002001" />
        <!-- Can be combined with <var>text</var> and its variations to
             request capitalization of the first character of every sentence.  Corresponds to
             {@link android.text.InputType#TYPE_TEXT_FLAG_CAP_SENTENCES}. -->
        <flag name="textCapSentences" value="0x00004001" />
        <!-- Can be combined with <var>text</var> and its variations to
             request auto-correction of text being input.  Corresponds to
             {@link android.text.InputType#TYPE_TEXT_FLAG_AUTO_CORRECT}. -->
        <flag name="textAutoCorrect" value="0x00008001" />
        <!-- Can be combined with <var>text</var> and its variations to
             specify that this field will be doing its own auto-completion and
             talking with the input method appropriately.  Corresponds to
             {@link android.text.InputType#TYPE_TEXT_FLAG_AUTO_COMPLETE}. -->
        <flag name="textAutoComplete" value="0x00010001" />
        <!-- Can be combined with <var>text</var> and its variations to
             allow multiple lines of text in the field.  If this flag is not set,
             the text field will be constrained to a single line.  Corresponds to
             {@link android.text.InputType#TYPE_TEXT_FLAG_MULTI_LINE}. -->
        <flag name="textMultiLine" value="0x00020001" />
        <!-- Can be combined with <var>text</var> and its variations to
             indicate that though the regular text view should not be multiple
             lines, the IME should provide multiple lines if it can.  Corresponds to
             {@link android.text.InputType#TYPE_TEXT_FLAG_IME_MULTI_LINE}. -->
        <flag name="textImeMultiLine" value="0x00040001" />
        <!-- Can be combined with <var>text</var> and its variations to
             indicate that the IME should not show any
             dictionary-based word suggestions.  Corresponds to
             {@link android.text.InputType#TYPE_TEXT_FLAG_NO_SUGGESTIONS}. -->
        <flag name="textNoSuggestions" value="0x00080001" />
        <!-- Text that will be used as a URI.  Corresponds to
             {@link android.text.InputType#TYPE_CLASS_TEXT} |
             {@link android.text.InputType#TYPE_TEXT_VARIATION_URI}. -->
        <flag name="textUri" value="0x00000011" />
        <!-- Text that will be used as an e-mail address.  Corresponds to
             {@link android.text.InputType#TYPE_CLASS_TEXT} |
             {@link android.text.InputType#TYPE_TEXT_VARIATION_EMAIL_ADDRESS}. -->
        <flag name="textEmailAddress" value="0x00000021" />
        <!-- Text that is being supplied as the subject of an e-mail.  Corresponds to
             {@link android.text.InputType#TYPE_CLASS_TEXT} |
             {@link android.text.InputType#TYPE_TEXT_VARIATION_EMAIL_SUBJECT}. -->
        <flag name="textEmailSubject" value="0x00000031" />
        <!-- Text that is the content of a short message.  Corresponds to
             {@link android.text.InputType#TYPE_CLASS_TEXT} |
             {@link android.text.InputType#TYPE_TEXT_VARIATION_SHORT_MESSAGE}. -->
        <flag name="textShortMessage" value="0x00000041" />
        <!-- Text that is the content of a long message.  Corresponds to
             {@link android.text.InputType#TYPE_CLASS_TEXT} |
             {@link android.text.InputType#TYPE_TEXT_VARIATION_LONG_MESSAGE}. -->
        <flag name="textLongMessage" value="0x00000051" />
        <!-- Text that is the name of a person.  Corresponds to
             {@link android.text.InputType#TYPE_CLASS_TEXT} |
             {@link android.text.InputType#TYPE_TEXT_VARIATION_PERSON_NAME}. -->
        <flag name="textPersonName" value="0x00000061" />
        <!-- Text that is being supplied as a postal mailing address.  Corresponds to
             {@link android.text.InputType#TYPE_CLASS_TEXT} |
             {@link android.text.InputType#TYPE_TEXT_VARIATION_POSTAL_ADDRESS}. -->
        <flag name="textPostalAddress" value="0x00000071" />
        <!-- Text that is a password.  Corresponds to
             {@link android.text.InputType#TYPE_CLASS_TEXT} |
             {@link android.text.InputType#TYPE_TEXT_VARIATION_PASSWORD}. -->
        <flag name="textPassword" value="0x00000081" />
        <!-- Text that is a password that should be visible.  Corresponds to
             {@link android.text.InputType#TYPE_CLASS_TEXT} |
             {@link android.text.InputType#TYPE_TEXT_VARIATION_VISIBLE_PASSWORD}. -->
        <flag name="textVisiblePassword" value="0x00000091" />
        <!-- Text that is being supplied as text in a web form.  Corresponds to
             {@link android.text.InputType#TYPE_CLASS_TEXT} |
             {@link android.text.InputType#TYPE_TEXT_VARIATION_WEB_EDIT_TEXT}. -->
        <flag name="textWebEditText" value="0x000000a1" />
        <!-- Text that is filtering some other data.  Corresponds to
             {@link android.text.InputType#TYPE_CLASS_TEXT} |
             {@link android.text.InputType#TYPE_TEXT_VARIATION_FILTER}. -->
        <flag name="textFilter" value="0x000000b1" />
        <!-- Text that is for phonetic pronunciation, such as a phonetic name
             field in a contact entry.  Corresponds to
             {@link android.text.InputType#TYPE_CLASS_TEXT} |
             {@link android.text.InputType#TYPE_TEXT_VARIATION_PHONETIC}. -->
        <flag name="textPhonetic" value="0x000000c1" />
        <!-- Text that will be used as an e-mail address on a web form.  Corresponds to
             {@link android.text.InputType#TYPE_CLASS_TEXT} |
             {@link android.text.InputType#TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS}. -->
        <flag name="textWebEmailAddress" value="0x000000d1" />
        <!-- Text that will be used as a password on a web form.  Corresponds to
             {@link android.text.InputType#TYPE_CLASS_TEXT} |
             {@link android.text.InputType#TYPE_TEXT_VARIATION_WEB_PASSWORD}. -->
        <flag name="textWebPassword" value="0x000000e1" />
        <!-- A numeric only field.  Corresponds to
             {@link android.text.InputType#TYPE_CLASS_NUMBER} |
             {@link android.text.InputType#TYPE_NUMBER_VARIATION_NORMAL}. -->
        <flag name="number" value="0x00000002" />
        <!-- Can be combined with <var>number</var> and its other options to
             allow a signed number.  Corresponds to
             {@link android.text.InputType#TYPE_CLASS_NUMBER} |
             {@link android.text.InputType#TYPE_NUMBER_FLAG_SIGNED}. -->
        <flag name="numberSigned" value="0x00001002" />
        <!-- Can be combined with <var>number</var> and its other options to
             allow a decimal (fractional) number.  Corresponds to
             {@link android.text.InputType#TYPE_CLASS_NUMBER} |
             {@link android.text.InputType#TYPE_NUMBER_FLAG_DECIMAL}. -->
        <flag name="numberDecimal" value="0x00002002" />
        <!-- A numeric password field.  Corresponds to
             {@link android.text.InputType#TYPE_CLASS_NUMBER} |
             {@link android.text.InputType#TYPE_NUMBER_VARIATION_PASSWORD}. -->
        <flag name="numberPassword" value="0x00000012" />
        <!-- For entering a phone number.  Corresponds to
             {@link android.text.InputType#TYPE_CLASS_PHONE}. -->
        <flag name="phone" value="0x00000003" />
        <!-- For entering a date and time.  Corresponds to
             {@link android.text.InputType#TYPE_CLASS_DATETIME} |
             {@link android.text.InputType#TYPE_DATETIME_VARIATION_NORMAL}. -->
        <flag name="datetime" value="0x00000004" />
        <!-- For entering a date.  Corresponds to
             {@link android.text.InputType#TYPE_CLASS_DATETIME} |
             {@link android.text.InputType#TYPE_DATETIME_VARIATION_DATE}. -->
        <flag name="date" value="0x00000014" />
        <!-- For entering a time.  Corresponds to
             {@link android.text.InputType#TYPE_CLASS_DATETIME} |
             {@link android.text.InputType#TYPE_DATETIME_VARIATION_TIME}. -->
        <flag name="time" value="0x00000024" />
    </attr>

So you have 2 choices, if you need to change the name of inputType to another name (i.e title_inputType) then you need to copy all of this over, but if you need to keep the same name, then use Alexey's answer

Answer 3

Lets say you have a custom view named InputView, which is not a TextView (lets say its a RelativeLayout).

In your attrs.xml:

<declare-styleable name="InputView">

    <!-- any custom attributes -->
    <attr name="title" format="string" /> 

    <!-- standart attributes, note android: prefix and no format attribute -->
    <attr name="android:imeOptions"/> 
    <attr name="android:inputType"/>

</declare-styleable>

In an xml layout where you want to include InputView:

<!-- note xmlns:custom and com.mycompany.myapp -->
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:custom="http://schemas.android.com/apk/res-auto"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">

        <!-- note that you will be using android: prefix for standart attributes, and not custom: prefix -->
        <!-- also note that you can use standart values: actionNext or textEmailAddress -->
        <com.mycompany.myapp.InputView
        android:id="@+id/emailField"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        custom:title="@string/my_title"
        android:imeOptions="actionNext|flagNoExtractUi"
        android:inputType="textEmailAddress" />

</FrameLayout>

Inside your custom class you can extract attributes as usual:

    ...

    private String title;
    private int inputType;
    private int imeOptions;

    ...
    TypedArray a = getContext().obtainStyledAttributes(attrs, R.styleable.InputView);

    int n = a.getIndexCount();
    for (int i = 0; i < n; i++) {
        int attr = a.getIndex(i);
        switch (attr) {
        case R.styleable.InputView_title:
            title = a.getString(attr);
            break;
        //note that you are accessing standart attributes using your attrs identifier
        case R.styleable.InputView_android_inputType:
            inputType = a.getInt(attr, EditorInfo.TYPE_TEXT_VARIATION_NORMAL);
            break;
        case R.styleable.InputView_android_imeOptions:
            imeOptions = a.getInt(attr, 0);
            break;
        default:
            Log.d("TAG", "Unknown attribute for " + getClass().toString() + ": " + attr);
            break;
        }
    }

    a.recycle();
    ...

Answer 4

use this in your attr.xml for the suggestions . the use of flags give the suggestions in xml while using edittext. the custom:inputType="text" and it will suggest you the addition types. to add more flags use this link Visit https://android.googlesource.com/platform/frameworks/base/+/refs/heads/master/core/res/res/values/attrs.xml

<resources>

<declare-styleable name="ClearableEditText">
    <attr name="hintText" format="string" />
    <attr name="inputType" format="integer">

        <!-- There is no content type. The text is not editable. -->
        <flag name="none" value="0x00000000" />
        <!--
Just plain old text. Corresponds to
{@link android.text.InputType#TYPE_CLASS_TEXT} |
{@link android.text.InputType#TYPE_TEXT_VARIATION_NORMAL}.
        -->
        <flag name="text" value="0x00000001" />
        <!--
Can be combined with <var>text</var> and its variations to
request capitalization of all characters. Corresponds to
{@link android.text.InputType#TYPE_TEXT_FLAG_CAP_CHARACTERS}.
        -->
    </attr>
  </declare-styleable>

</resources>