Question

我用：

public class CheckableRelativeLayout extends RelativeLayout implements Checkable {

    private static final int[] CHECKED_STATE_SET = { android.R.attr.state_checked, };

    private boolean mChecked;

    public CheckableRelativeLayout(Context context) {
        super(context);
    }

    public CheckableRelativeLayout(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public CheckableRelativeLayout(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    @Override
    public void setChecked(boolean checked) {
        if (mChecked != checked) {
            mChecked = checked;
            refreshDrawableState();
        }
    }

    @Override
    public boolean isChecked() {
        return mChecked;
    }

    @Override
    public void toggle() {
        setChecked(!mChecked);
    }

    @Override
    protected int[] onCreateDrawableState(int extraSpace) {
        final int[] drawableState = super.onCreateDrawableState(extraSpace + 1);
        if (isChecked()) {
            mergeDrawableStates(drawableState, CHECKED_STATE_SET);
        }
        return drawableState;
    }

}

基于this，我这样使用它：

<com.example.components.CheckableRelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/CheckableRelativeLayout1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@drawable/selector_background_navigation_item"
    android:orientation="horizontal"
    android:padding="10dp"
    android:gravity="center_vertical" >

    <ImageView
        android:id="@+id/navigationDrawerItemImageView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <TextView
        android:id="@+id/navigationDrawerItemTextView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignTop="@+id/navigationDrawerItemImageView"
        android:layout_margin="5dp"
        android:layout_toRightOf="@+id/navigationDrawerItemImageView"
        android:textColor="@drawable/selector_text_navigation_item"
        android:textSize="@dimen/text_size_small" />

</com.example.components.CheckableRelativeLayout>

在列表项中，其中selector_background_navigation_item定义如下：

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
    <item android:state_checked="false" android:state_pressed="false" android:drawable="@color/darkblue"></item>
    <item android:state_pressed="true" android:drawable="@color/sirinblue"></item>
    <item android:state_checked="true" android:drawable="@color/white"></item>
</selector>

和selector_text_navigation_item定义如下：

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
    <item android:state_checked="false" android:state_pressed="false" android:color="@color/white"></item>
    <item android:state_pressed="true" android:color="@color/lightblue"></item>
    <item android:state_checked="true" android:color="@color/lightblue"></item>
</selector>

现在，问题是TextView选择器没有响应检查事件，而CheckableRelativeLayout确实如此，但两者都能正确响应简单的按下，最好的解决方法是什么？也许CheckableRelativeLayout缺少一些处理其子检查状态的超级调用？

Answer 1

将Text：duplicateParentState =“true”添加到TextView就可以了！

可检查的布局层次结构

1 个答案: