我无法弄清楚如何以编程方式访问RelativeLayout,以便在调用程序中调用relativeLayout.getChildCount();
之类的方法。
编辑 - 好吧,如果我想获得RelativeLayout中的视图总数,我会调用哪个函数?
答案 0 :(得分:0)
在文件夹res / layout中,我假设您的布局名为layout.xml
确保您的RelativeLayout具有android:id段
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/myRelativeLayout" > //the id name can be acsessed in activity
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world" />
</RelativeLayout>
访问活动中的RelativeLayout ID
public class mainActivity extends Activity {
//make variable globally
RelativeLayout myRelativeLayout;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//the layout file
setContentView(R.layout.layout);
//access the RelativeLayout and initialiszed the object
myRelativeLayout = (RelativeLayout) findViewById(R.id.myRelativeLayout);
myRelativeLayout.getChildCount();
}
}