如何让OnClickListener使用RelativeLayout处理自定义视图？

Question

题

你好,

我已经构建了一个自定义视图,RelativeLayout使用它作为自定义图像按钮.到目前为止,选择它有效(PIC2),甚至当我点击它(使用GoogleTV Remote)时,视图成功地将其状态更改为PIC3(由于android:duplicateParentState="true")

但不幸的是,onClickListener它不会触发(如果我点击带遥控器的视图"OK"按钮或者我使用触摸板也没关系..)

我真的需要像普通按钮一样的行为.怎么做到这一点？我已经花了几个小时的搜索谷歌和StackOverflow的...(顺便说一句,当设置android:clickable="false"为RelativeLayout,在OnClickListener工作,但只有当我使用鼠标指针(触摸板),之后焦点将丢失,状态(如图3)没有显示)

图片

PIC1

PIC2

PIC3

码

rounded_button.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:clickable="true"
android:focusable="true"
android:focusableInTouchMode="false">

<TextView
    android:id="@+id/caption"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerVertical="true"
    android:layout_marginLeft="30dp"
    android:background="@drawable/btn_rounded_corners"
    android:paddingLeft="25dp"
    android:textSize="15sp" 
    android:duplicateParentState="true"/>

<ImageView
    android:id="@+id/icon"
    style="@style/Menu_Button"
    android:layout_width="50dp"
    android:layout_height="50dp"
    android:layout_marginRight="-50dp"
    android:layout_toLeftOf="@id/caption"
    android:background="@drawable/btn_main_menu_back_shape"
    tools:ignore="ContentDescription"
    android:duplicateParentState="true" />

RoundedButton.java

public class RoundedButton extends RelativeLayout {
private String label;
private int icon;

/**
 * @param context
 */
public RoundedButton(Context context)
{
    super(context);
    initAttributes(context, null);
}

/**
 * @param context
 * @param attrs
 */
public RoundedButton(Context context, AttributeSet attrs)
{
    super(context, attrs);
    initAttributes(context, attrs);
}

/**
 * @param context
 * @param attrs
 * @param defStyle
 */
public RoundedButton(Context context, AttributeSet attrs, int defStyle)
{
    super(context, attrs, defStyle);
    initAttributes(context, attrs);
}

private void initAttributes(Context context, AttributeSet attrs)
{
    LayoutInflater.from(context).inflate(R.layout.rounded_button, this, true);

    TypedArray a = 
        context.obtainStyledAttributes(attrs, R.styleable.RoundedButton);

    final int N = a.getIndexCount();
    for (int i = 0; i < N; ++i)
    {
        int attr = a.getIndex(i);
        switch (attr)
        {
            case R.styleable.RoundedButton_text:
                setLabel(a.getString(attr));
                break;
            case R.styleable.RoundedButton_icon:
                setIcon(a.getResourceId(attr, 0));
                break;
        }
    }
    a.recycle();
}

public String getLabel()
{
    return this.label;
}

public void setLabel(final String label)
{
    this.label = label;
    ((TextView)findViewById(R.id.caption)).setText(this.label);
}

/**
 * @return the icon
 */
public int getIcon()
{
    return icon;
}

/**
 * @param icon the icon to set
 */
public void setIcon(int icon)
{
    this.icon = icon;
    ((ImageView)findViewById(R.id.icon)).setImageResource(this.icon);
}
}

activity_main.xml的相关部分

<eu.test.custom_views.RoundedButton
    android:id="@+id/custombutton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    custom:icon="@drawable/hand_icon_green_left"
    custom:text="Normal state" />

主要活动

public class MainActivity extends Activity implements OnClickListener {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    ((RoundedButton) findViewById(R.id.custombutton)).setOnClickListener(this);
}

@Override
public void onClick(View arg0) {
    if(arg0.getId() == R.id.custombutton) { Toast.makeText(this, "Clicked", Toast.LENGTH_SHORT).show(); }
}
}

Answer 1

我现在明白了......解决方案很简单,需要一些时间;-)

解

dispatchKeyEvent(KeyEvent event)在RoundedButton.java中重写并实现自己的OnClickListener.然后写一个公共setOnClickListener函数......

private OnClickListener listener;

@Override
public boolean dispatchTouchEvent(MotionEvent event) {
    if(event.getAction() == MotionEvent.ACTION_UP) {
        if(listener != null) listener.onClick(this);
    }
    return super.dispatchTouchEvent(event);
}


@Override
public boolean dispatchKeyEvent(KeyEvent event) {
    if(event.getAction() == KeyEvent.ACTION_UP && (event.getKeyCode() == KeyEvent.KEYCODE_DPAD_CENTER || event.getKeyCode() == KeyEvent.KEYCODE_ENTER)) {
        if(listener != null) listener.onClick(this);
    }
    return super.dispatchKeyEvent(event);
}

public void setOnClickListener(OnClickListener listener) {
    this.listener = listener;
}

工作RoundedButton.java

public class RoundedButton extends RelativeLayout
{
private OnClickListener listener;
private String label;
private int icon;

@Override
public boolean dispatchTouchEvent(MotionEvent event) {
    if(event.getAction() == MotionEvent.ACTION_UP) {
        if(listener != null) listener.onClick(this);
    }
    return super.dispatchTouchEvent(event);
}


@Override
public boolean dispatchKeyEvent(KeyEvent event) {
    if(event.getAction() == KeyEvent.ACTION_UP && (event.getKeyCode() == KeyEvent.KEYCODE_DPAD_CENTER || event.getKeyCode() == KeyEvent.KEYCODE_ENTER)) {
        if(listener != null) listener.onClick(this);
    }
    return super.dispatchKeyEvent(event);
}

public void setOnClickListener(OnClickListener listener) {
    this.listener = listener;
}

/**
 * @param context
 */
public RoundedButton(Context context)
{
    super(context);
    initAttributes(context, null);
}

/**
 * @param context
 * @param attrs
 */
public RoundedButton(Context context, AttributeSet attrs)
{
    super(context, attrs);
    initAttributes(context, attrs);
}

/**
 * @param context
 * @param attrs
 * @param defStyle
 */
public RoundedButton(Context context, AttributeSet attrs, int defStyle)
{
    super(context, attrs, defStyle);
    this.setClickable(true);
    this.setEnabled(true);
    this.setFocusable(true);
    this.setFocusableInTouchMode(true);

    initAttributes(context, attrs);
}

private void initAttributes(Context context, AttributeSet attrs)
{
    LayoutInflater.from(context).inflate(R.layout.rounded_button,  this, true);

    TypedArray a = 
        context.obtainStyledAttributes(attrs, R.styleable.RoundedButton);

    final int N = a.getIndexCount();
    for (int i = 0; i < N; ++i)
    {
        int attr = a.getIndex(i);
        switch (attr)
        {
            case R.styleable.RoundedButton_text:
                setLabel(a.getString(attr));
                break;
            case R.styleable.RoundedButton_icon:
                setIcon(a.getResourceId(attr, 0));
                break;
        }
    }
    a.recycle();
}

public String getLabel()
{
    return this.label;
}

public void setLabel(final String label)
{
    this.label = label;
    ((TextView)findViewById(R.id.caption)).setText(this.label);
}

/**
 * @return the icon
 */
public int getIcon()
{
    return icon;
}

/**
 * @param icon the icon to set
 */
public void setIcon(int icon)
{
    this.icon = icon;
    ((ImageView)findViewById(R.id.icon)).setImageResource(this.icon);
}

}

Answer 2

我创建我的自定义视图的情况下（从它继承RelativeLayout的）RecyclerView.Adapter和充气list_item.xml到每一个新的实例，然后附上我的听众的onBindViewHolder()方法，但即使在理论上我正在做的事情以正确的方式，直到我删除它没有工作（我的自定义视图）的根布局中的android:clickable="true"属性list_item.xml。