遍历GroupView的所有子项？

Question

这是我的代码：

    Typeface font = Typeface.createFromAsset(getAssets(), "fonts/choco.ttf");  
    ViewGroup rootView = (ViewGroup) findViewById(android.R.id.content).getRootView();
    for(int i = 0; i < rootView.getChildCount(); i++)
    {
        View child = rootView.getChildAt(i);
        Log.d("menfis", child.toString());
        if(child != null)
            if(child.getClass() == TextView.class)
                ((TextView) child).setTypeface(font);
    }

这是我此页面的XML：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@drawable/background_page"
android:gravity="center_horizontal" >

<ImageView
    android:id="@+id/imgApplicationIcon"         
    android:src="@drawable/logo" 
    android:layout_width="fill_parent" android:layout_height="wrap_content"/>

<TextView  
    android:layout_marginTop="40dip"
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_gravity="right"
    android:textColor="@color/red"
    android:lines="2"
    android:layout_marginRight="30dip"
    android:text="test1" />

<TextView  
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_gravity="right"
    android:layout_marginRight="30dip"
    android:textColor="@color/red"
    android:lines="2"
    android:text="test2" />
</LinearLayout>

问题是我只能在LogCat控制台上得到它：

09-20 14:34:27.264: DEBUG/menfis(12251): android.widget.LinearLayout@40523820

为什么我没有得到对TextViews的引用？

Answer 1

您需要递归遍历视图树。当前，您仅列出根视图的子级。

换句话说，您需要这样的东西：

@Override
public void onCreate(Bundle savedInstanceState) 
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    ...
    Typeface font = Typeface.createFromAsset(getAssets(), "fonts/choco.ttf");  
    ViewGroup rootView = (ViewGroup) findViewById(android.R.id.content).getRootView();
    applyFontRecursively(rootView, font);
}

void applyFontRecursively(ViewGroup parent, Typeface font) 
{    
    for(int i = 0; i < parent.getChildCount(); i++)
    {
        View child = parent.getChildAt(i);            
        if(child instanceof ViewGroup) 
        {
            applyFontRecursively((ViewGroup)child, font);
        }
        else if(child != null)
        {
            Log.d("menfis", child.toString());
            if(child.getClass() == TextView.class)
            {
                ((TextView) child).setTypeface(font);
            }
        }                
    }
}