在 LinearLayout 上没有使用 child 触发 onClick

我有一个带有较小 TextView 子级的自定义 LinearLayout。我希望能够单击 TextView 没有覆盖的区域，所以我将 clickable = true 和一个 onclicklisten 设置为 LinearLayout，但是 onClick 没有被触发。如果我在 TextView 上设置 onclick 侦听器，它将按预期工作..。

有人能帮忙吗？

Ar _ item. xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/ar_item" android:layout_width="202dp"
android:layout_height="62dp" android:background="@drawable/bg_item_ar"
android:clickable="true">


<TextView android:id="@+id/ar_item_txt"
android:layout_width="164dp" android:layout_height="fill_parent"
android:paddingBottom="8dp" android:paddingLeft="8dp"
android:paddingTop="8dp" android:paddingRight="6dp" android:gravity="center"
android:background="#50000000" />


</LinearLayout>

我的自定义线性布局

public class ARView extends LinearLayout
{


public ARView(final Context context, String name, String id)
{
super(context);
getLayoutInflater().inflate(R.layout.ar_item, this ,true);
LayoutInflater inflater = (LayoutInflater)   getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
inflater.inflate(R.layout.ar_item, null);


TextView textView = (TextView) findViewById(R.id.ar_item_txt);
textView.setText(name);


setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
Toast t = Toast.makeText(context, "hey!", Toast.LENGTH_SHORT);
t.show();
}
});
}
}
69417 次浏览
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Your TextView height covers the whole parent (whole layout) so you might clicking on empty space but not on the layout. Try using wrap_content for android:layout_height for your TextView. Set click listener for the layout as well.

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You aren't using your custom View; you're using a standard LinearLayout. Your XML tag should be:

<com.yourcode.ARView ...> ... </com.yourcode.ARView>
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The problem may be from the textview that has android:layout_height="fill_parent" in its layout. If that doesn't fix the issue, the problem may be the onClick() event. The linear layout may not actually ever call onClick() since its a layout. Try overriding the onTouch() event listener instead.

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最佳答案

for every child

android:duplicateParentState="true"

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One thing to make sure of is that another view is not on top of the view you are trying to click. This is especially common in FrameLayouts (where your sub LinearLayout may be covered) or with Relative Layouts you might have forgot to update this line:

android:layout_below="@id/shouldBeTheIdOfTheViewCurrentlyBeingCovered"

so that views don't fill the same space.

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android:duplicateParentState="true" did not help me.

To make your layout clickable with its children you need add this option for every child: 

 android:clickable="false"

Then click handling will go up to parent.

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This isn't your case, but I had similar problem with clickable ViewGroup. After a hour of looking for solution a found out that I set android:inputType to TextView inside my ViewGroup which was blocking onClick() listener (no idea why)

Don't use android:inputType with TextView

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If the views in question are TextViews, you may need to set them as focusable="false" so that the first click isn't used focusing on the text view.

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Add the following attributes to the linearlayout Any Click events not handled by the child views will be automatically passed over to the LinearLayout.

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
...
android:focusable="true"
android:clickable="true">


<child/>
<child/>


</LinearLayout>
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The android:duplicateParentState="true" made my TextView looks like it's disabled, and cannot receive click event.

All you need is set the TextView clickable="false". So the click event will dispatch to parent layout, and the TextView still can react to touch event (with ripple effect).

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I faced the same problem, and all the XML Attributes didn't work. I am not sure if this happens because i programmatically inflate and add the views, but this is how i worked around the problem.

I have a Class which extends LinearLayout, with a TextView and an ImageView. After inflating the layout and getting the views, I assigned the child views a OnClickListener, when pressed, executes the LineaLayout's onClickListner.

public class MyView extends LinearLayout {
private OnClickListener clickListener;
ImageView imageView;
TextView textView;


@Override
public void setOnClickListener(@Nullable OnClickListener l) {
super.setOnClickListener(l);
clickListener = l;
}


void afterViews() {
imageView.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
clickListener.onClick(MyView.this);
return false;
}
});
textView.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
clickListener.onClick(MyView.this);
return false;
}
});
}

I also tried overriding OnTouchListener, but then my child views didn't have the ripple effect, which I needed.

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None of the solutions above forked for me. Than i noticed that a LinkMovementMethod set to TextView inside my LinearLayout. This class intercepts touch events, click events and properties of TextView such as clickable, focusable vs..

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Make Your parent LinearLayout's android:clickable="true"

Make all of the the childview's android:clickable="false"

Under Linearlayout - Remove android:inputType="" from TextView

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I faced the same problem, and all the XML attributes didn't work. I think this happens because I programmatically inflate and add the views. The fix for me was to - also that programatically - set the inflated root view not clickable:

View view = layoutInflater.inflate(R.layout.some_layout, someLinearLayout, false);
view.setClickable(false);

(Yes, I tried to have the some_layout not clickable in XML.)

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android:duplicateParentState="true" >= not worked

focusable="false" >= not worked

clickable="false>= not worked

So i did a quick fix by adding Transparent Button on top with match_parent for height and width

Problem solved without any extra code,


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