java - 当一个布局中具有相同 ID 的更多组件时，旋转后出现错误值

Question

我创建了一个可删除的 EditText。这是布局

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

<EditText
    android:id="@+id/cacEditText"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:inputType="text"
    android:paddingRight="35dp" />

<Button
    android:id="@+id/cacClearButton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentRight="true"
    android:layout_marginLeft="20dp"
    android:layout_marginTop="5dp"
    android:layout_marginRight="5dp"
    android:background="@android:drawable/ic_input_delete"
    android:visibility="invisible" />

</RelativeLayout>

问题是，当我将更多这些放入一个布局并旋转到横向时，它们突然都具有相同的值。我想这是因为系统按 ID 恢复值，并且每个组件由相同 ID 的元素组成。我该如何解决这个问题？

更多信息:

布局中的可删除EditText (cz.kns.uome.component.CleanAndClearEditText)

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res/cz.kns.uome"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <ScrollView
        android:id="@+id/scrollView1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" >

        <LinearLayout
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            android:padding="5dp" >

            <RelativeLayout
                android:layout_width="fill_parent"
                android:layout_height="wrap_content" >

                <cz.kns.uome.component.CleanAndClearEditText
                    android:id="@+id/nameEditText"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_alignParentLeft="true"
                    android:layout_toLeftOf="@+id/contactPickerButton"
                    app:hint="@string/person_name"
                    app:type="textPersonName" />

                <ImageButton
                    android:id="@+id/contactPickerButton"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_alignParentRight="true"
                    android:contentDescription="@string/select_contact"
                    android:src="@drawable/ic_action_dropdown" />
            </RelativeLayout>

            <cz.kns.uome.component.CleanAndClearEditText
                android:id="@+id/emailEditText"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                app:hint="@string/person_email_opt"
                app:type="textEmailAddress" />

            <cz.kns.uome.component.CleanAndClearEditText
                android:id="@+id/descriptionEditText"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                app:hint="@string/description_opt"
                app:type="text" />

            <LinearLayout
                android:layout_width="fill_parent"
                android:layout_height="wrap_content" >

                <Button
                    android:id="@+id/saveButton"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="5"
                    android:text="@string/save" />

                <Button
                    android:id="@+id/cancelButton"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="2"
                    android:text="@string/cancel" />
            </LinearLayout>
        </LinearLayout>
    </ScrollView>

</LinearLayout>

Java 类

public class CleanAndClearEditText extends RelativeLayout {

    private final EditText editText;
    private final Button clearButton;

    public CleanAndClearEditText(Context context, AttributeSet attrs) {
        super(context, attrs);
        LayoutInflater inflater = (LayoutInflater) context
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        inflater.inflate(R.layout.clean_and_clear_edit_text, this);

        TypedArray typedArray = getContext().obtainStyledAttributes(attrs,
                R.styleable.ClearAndCleanEditText);

        // ?????
        // I have to somehow access that edittext here but static id does not work
        editText = (EditText) findViewById(R.id.cacEditText);
        editText.addTextChangedListener(textWatcher);
        editText.setHint(typedArray.getString(R.styleable.ClearAndCleanEditText_hint));

        String type = typedArray.getString(R.styleable.ClearAndCleanEditText_type);
        if (type != null) {
            editText.setInputType(InputTypes.get(type));
        }

        clearButton = (Button) findViewById(R.id.cacClearButton);
        clearButton.setOnClickListener(clearButtonListener);
    }
    // rest ommited
}

Answer 1

我正在处理这个问题，我能够通过删除布局中包含自定义 View 的所有 View 来“解决”这个问题，实现这个:

public void onSaveInstanceState(Bundle outState) {
    // TODO Auto-generated method stub
    super.onSaveInstanceState(outState);
    // retain your data in the bundle then remove views
    layout.removeAllViewsInLayout();
}

因此您可以在 onCreate 方法中从包中取回数据。