我有一个片段，我试图在其中添加一个扩展类“CategoryOption” LinearLayout。但是，当我在我的 AddView 中执行时onCreateView()，它什么也没有显示。
这是我的片段代码：
public class ContentFragment extends Fragment {
LinearLayout navBarLayout;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// TODO Auto-generated method stub
View view = inflater.inflate(R.layout.content_fragment, container, false);
navBarLayout = (LinearLayout) view.findViewById(R.id.navbar_layout);
navBarLayout.addView(new CategoryOption(getActivity(), R.drawable.ic_action_rss, "RSS Feed"));
return view;
}
}
这是我的 content_fragment xml 文件：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<HorizontalScrollView
android:id="@+id/horizontalScrollView1"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<LinearLayout
android:id="@+id/navbar_layout"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:background="@android:color/darker_gray"
android:orientation="horizontal" >
</LinearLayout>
</HorizontalScrollView>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Large Text"
android:textAppearance="?android:attr/textAppearanceLarge" />
<Button
android:id="@+id/button1"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button" />
<RadioButton
android:id="@+id/radioButton1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="RadioButton" />
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button" />
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView" />
</LinearLayout>
</LinearLayout>
这是我的 CategoryOption 类：
public class CategoryOption extends LinearLayout {
int iconId;
String optionName;
LinearLayout optionLayout;
TextView tvOption;
ImageView ivIcon;
public CategoryOption(Context context) {
super(context);
// TODO Auto-generated constructor stub
}
public CategoryOption(Context context, int iconId, String optionName) {
super(context);
this.iconId = iconId;
this.optionName = optionName;
optionLayout = new LinearLayout(context);
tvOption = new TextView(context);
ivIcon = new ImageView(context);
setupLayout();
setupTextView();
setupImageView();
optionLayout.addView(ivIcon);
optionLayout.addView(tvOption);
}
private void setupImageView() {
// TODO Auto-generated method stub
LayoutParams params = new LayoutParams(36, 36);
params.setMargins(0, 0, 0, 4);
ivIcon.setLayoutParams(params);
ivIcon.setImageResource(iconId);
}
private void setupLayout() {
// TODO Auto-generated method stub
optionLayout.setLayoutParams(new LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
optionLayout.setOrientation(LinearLayout.VERTICAL);
optionLayout.setGravity(Gravity.CENTER);
optionLayout.setPadding(4, 4, 4, 4);
optionLayout.setBackgroundColor(Color.parseColor("#DEDEDE"));
}
private void setupTextView() {
// TODO Auto-generated method stub
tvOption.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT));
tvOption.setTextColor(Color.parseColor("#111111"));
tvOption.setText(optionName);
}
public int getIconId() {
return iconId;
}
public String getOptionName() {
return optionName;
}
}