Android自定义EditText视图和NextFocusDown

Question

在我的注册活动中,在垂直LinearLayout中设置了一些自定义的EditText视图.从上到下.

因为我需要为每个EditText提供一些额外的功能,所以我创建了一个自定义的EditText类,它提供了额外的功能.该类依赖于在attrs.xml中添加的一些自定义属性,并在类中检索,然后设置为膨胀的EditText.

一切都很好,除了一件我似乎无法解决的事情.我似乎无法让NextFocusDown处理我的自定义EditText视图.使用标准的EditText视图时,它工作正常.当我切换到我的自定义EditText时,它会忽略它.除此之外,所有其他属性的功能正常.

我错过了什么？有没有人设法在自定义编辑文本视图中使用该属性？

谢谢!

编辑:

这是自定义EditText类的一部分:

public class CustomEditText extends RelativeLayout {

private LayoutInflater mInflater = null;
private EditText mEditText;
private TextView mHintQuestionMark;
private TextView mHintText;
private Button mButtonClear;

private boolean isExpandView = false;
private boolean clearButtonEnabled = false;
private boolean hintEnabled = false;


public CustomEditText(Context context) {
    super(context);
    initViews();
}

public CustomEditText(Context context, AttributeSet attrs) {
    super(context, attrs);
    initViews();
    getCustomAttributes(context, attrs);
}

public CustomEditText(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    initViews();
    getCustomAttributes(context, attrs);
}

private void initViews() {
    mInflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    mInflater.inflate(R.layout.custom_edit_text, this, true);
    mHintText = (TextView) findViewById(R.id.theHint);
    mEditText = (EditText) findViewById(R.id.theEditText);

    mEditText.addTextChangedListener(new TextWatcher() {
        @Override
        public void beforeTextChanged(CharSequence charSequence, int i, int i2, int i3) {

        }

        @Override
        public void onTextChanged(CharSequence charSequence, int i, int i2, int i3) {

            if (clearButtonEnabled){
                if (charSequence.length() > 0){
                    mButtonClear.setVisibility(VISIBLE);
                } else {
                    mButtonClear.setVisibility(INVISIBLE);
                }
            }
        }

        @Override
        public void afterTextChanged(Editable editable) {

        }
    });

    mHintQuestionMark = (TextView) findViewById(R.id.hintQuestionMark);
    mHintQuestionMark.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            if (isExpandView) {
                collapseHeight(mHintText);
            } else {

                // Expand the HINT view downwards
                expandHeight(mHintText);
            }
        }
    });

    mButtonClear = (Button) findViewById(R.id.buttonClear);
    mButtonClear.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View view) {
            mEditText.setText("");
        }
    });
}

private void getCustomAttributes(Context ctx, AttributeSet attrs){
    TypedArray typedArray = ctx.getTheme().obtainStyledAttributes(attrs, R.styleable.edittext_attrs, 0, 0);
    int firstNameId = 0;
    int lastNameId = 0;

    try{
        mEditText.setInputType(typedArray.getInt(R.styleable.edittext_attrs_android_inputType, EditorInfo.TYPE_TEXT_VARIATION_NORMAL));
        mEditText.setHint(typedArray.getString(R.styleable.edittext_attrs_android_hint));
        mEditText.setNextFocusDownId(typedArray.getInt(R.styleable.edittext_attrs_android_nextFocusDown, -1));
        clearButtonEnabled = typedArray.getBoolean(R.styleable.edittext_attrs_add_clear_button, false);
        hintEnabled = typedArray.getBoolean(R.styleable.edittext_attrs_add_hint_icon, false);
    } finally {
        typedArray.recycle();
    }

    if (hintEnabled){
        mHintQuestionMark.setVisibility(VISIBLE);
    } else {
        mHintQuestionMark.setVisibility(GONE);

    }
}

这是我在该类中膨胀的自定义编辑文本xml:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">

<LinearLayout
    android:id="@+id/editTextGroup"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal">

    <RelativeLayout
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1">

        <EditText
            android:id="@+id/theEditText"
            android:layout_width="match_parent"
            android:layout_height="52dp"
            android:layout_weight="1"
            android:background="@drawable/edit_text_rectangle"
            android:maxLength="53"
            android:padding="12dp"
            android:visibility="visible" />

        <Button
            android:id="@+id/buttonClear"
            android:layout_width="30dp"
            android:layout_height="30dp"
            android:layout_alignParentRight="true"
            android:layout_centerVertical="true"
            android:background="@drawable/remove_text_x"
            android:layout_marginLeft="5dp"
            android:visibility="gone" />

    </RelativeLayout>

    <TextView
        android:id="@+id/hintQuestionMark"
        android:layout_width="36dp"
        android:layout_height="52dp"
        android:text="\?"
        android:textColor="#eeeeee"
        android:textSize="30sp"
        android:gravity="center"
        android:layout_gravity="right"
        android:background="#288abf"
        android:visibility="gone" />

</LinearLayout>

<TextView
    android:id="@+id/theHint"
    android:layout_width="match_parent"
    android:layout_height="120dp"
    android:padding="8dp"
    android:text="@string/txtEmailHintText"
    android:textColor="#eeeeee"
    android:textSize="15sp"
    android:gravity="left"
    android:background="#288abf"
    android:layout_alignLeft="@+id/editTextGroup"
    android:layout_below="@+id/editTextGroup"
    android:visibility="gone" />

</RelativeLayout>

这是我用来获取自定义edittext类中的值的attrs.xml文件:

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

<declare-styleable name="edittext_attrs">

    <attr name="android:inputType" />
    <attr name="android:hint" />
    <attr name="android:nextFocusDown" />
    <attr name="add_clear_button" format="boolean" />
    <attr name="add_hint_icon" format="boolean" />

</declare-styleable>
</resources>

这是我用于注册活动的布局xml的一小部分,它的两个视图应该使用NextFocusDown:

 <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginTop="16dp">

        <com.name.view.customViews.CustomEditText
            android:id="@+id/registerTxtFirstName"
            android:layout_width="133dp"
            android:layout_height="52dp"
            android:nextFocusDown="@+id/registerTxtLastName"
            android:layout_alignParentLeft="true"
            android:inputType="textPersonName"
            custom:add_clear_button="true"
            android:hint="@string/first"
            android:visibility="visible" />

        <com.name.view.customViews.CustomEditText
            android:id="@+id/registerTxtLastName"
            android:layout_width="133dp"
            android:layout_height="52dp"
            android:layout_alignParentRight="true"
            custom:add_clear_button="true"
            android:hint="@string/last"
            android:inputType="textPersonName"
            android:visibility="visible" />


    </RelativeLayout>

我希望这里有足够的信息来看看问题是什么.

谢谢!

Answer 1

旧帖子，但我提交这个答案以防其他人遇到同样的问题。

就我而言，我发现setOnClickListener()在有问题的 CustomEditText 上使用会导致android:nextFocusDown=""xml 属性无法正常运行。

例如：

myxml.xml

<com.view.MyCustomEditText
    android:id="@+id/username"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginTop="16dp"
    android:hint="@string/email_username"
    android:inputType="textEmailAddress"
    android:nextFocusDown="@+id/password"/>

<EditText
    android:id="@+id/password"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:hint="@string/password_hint"
    android:inputType="textPassword"
    android:imeOptions="actionDone"/>

MainActivity.java：

mUserEditText = (EditText) findViewById(R.id.username);
mPasswordEditText = (EditText) findViewById(R.id.password);
// Instead of using this
mEditText.setOnClickListener(this)
// Use
mEditText.setOnTouchListener(this)