为什么不充气的意见作出回应点击听众？ [英] Why don't inflated views respond to click listeners?

问题描述

我想设定一个点击监听器在我的布局的按钮。当我打电话findViewById（）时，我从充气布局视图中的点击监听时才会触发直接，而不是：

I'm trying to set a click listener for a button in my layout. The click listener is only triggered when I call findViewById() directly, and not when I take the view from the inflated layout:

public class MyActivity extends Activity implements View.OnClickListener {
    private static final String TAG = "MyActivity";

    @Override
    public void onCreate( Bundle savedInstanceState ) {
        super.onCreate( savedInstanceState );
        setContentView( R.layout.test );

        Button button = (Button)findViewById( R.id.mybutton );
        button.setOnClickListener( this );

        LayoutInflater inflater = (LayoutInflater)getSystemService( Context.LAYOUT_INFLATER_SERVICE );
        ViewGroup rootLayout = (ViewGroup)inflater.inflate( R.layout.test,
            (ViewGroup)findViewById( R.id.myroot ), false );
        rootLayout.getChildAt( 0 ).setOnClickListener( new View.OnClickListener() {
            @Override
            public void onClick( View v ) {
                Log.d( TAG, "Click from inflated view" );
            }
        } );
    }

    @Override
    public void onClick( View v ) {
        Log.d( TAG, "Click" );
    }
}

下面是我的布局：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/myroot" android:orientation="vertical"
    android:layout_width="fill_parent" android:background="#ffffff"
    android:layout_height="fill_parent">
    <Button android:text="Button" android:id="@+id/mybutton"
        android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
</LinearLayout>

这是为什么？我只从第一个方法，而不是从膨胀的观点得到click事件。

Why is this? I only get the click event from the first method and not from the inflated view.

推荐答案

原来我需要调用的setContentView（rootLayout）。

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