上面的代码mContainer的触摸事件无效
时间: 2024-02-16 14:59:36 浏览: 14
可能是因为mContainer没有设置可点击或可触摸的属性,你可以尝试在mContainer的布局文件中添加以下属性来解决该问题:
```xml
android:clickable="true"
android:focusable="true"
android:focusableInTouchMode="true"
```
如果还是不行,可以尝试在mContainer的父级布局中添加以下属性:
```xml
android:descendantFocusability="blocksDescendants"
```
这样可以确保点击事件可以正确地传递到mContainer上。
相关问题
recycleview和fragment的主页面代码
以下是一个使用RecyclerView和Fragment的主页面代码示例:
MainActivity.java
```
public class MainActivity extends AppCompatActivity {
private RecyclerView mRecyclerView;
private MyAdapter mAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mRecyclerView = findViewById(R.id.recycler_view);
mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
mAdapter = new MyAdapter(getSupportFragmentManager());
mRecyclerView.setAdapter(mAdapter);
}
}
```
activity_main.xml
```
<?xml version="1.0" encoding="utf-8"?>
<androidx.recyclerview.widget.RecyclerView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="match_parent" />
```
MyAdapter.java
```
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder> {
private static final int NUM_PAGES = 3;
private FragmentManager mFragmentManager;
public MyAdapter(FragmentManager fragmentManager) {
mFragmentManager = fragmentManager;
}
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext())
.inflate(R.layout.item_page, parent, false);
return new MyViewHolder(view);
}
@Override
public void onBindViewHolder(MyViewHolder holder, int position) {
holder.bind(position);
}
@Override
public int getItemCount() {
return NUM_PAGES;
}
public class MyViewHolder extends RecyclerView.ViewHolder {
private FrameLayout mContainer;
public MyViewHolder(View itemView) {
super(itemView);
mContainer = itemView.findViewById(R.id.container);
}
public void bind(int position) {
Fragment fragment = new MyFragment();
Bundle args = new Bundle();
args.putInt(MyFragment.ARG_PAGE_NUMBER, position + 1);
fragment.setArguments(args);
mFragmentManager.beginTransaction()
.replace(mContainer.getId(), fragment)
.commit();
}
}
}
```
item_page.xml
```
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent" />
```
MyFragment.java
```
public class MyFragment extends Fragment {
public static final String ARG_PAGE_NUMBER = "page_number";
private int mPageNumber;
public MyFragment() {
// Required empty public constructor
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mPageNumber = getArguments().getInt(ARG_PAGE_NUMBER);
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_my, container, false);
TextView textView = view.findViewById(R.id.text_view);
textView.setText("Page " + mPageNumber);
return view;
}
}
```
fragment_my.xml
```
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/text_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:textSize="36sp" />
```
在这个示例中,RecyclerView用于显示多个页面(每个页面都是一个Fragment),而MyAdapter负责将页面绑定到RecyclerView。每个页面由一个FrameLayout容器包含,并使用FragmentManager动态添加Fragment。每个Fragment都有一个参数,用于指示它是第几页。最后,每个Fragment都显示一个文本视图,显示它是第几页。
private static class MessageViewHolder extends RecyclerView.ViewHolder { private TextView mTextMessage; private LinearLayout mContainer; MessageViewHolder(@NonNull View itemView) { super(itemView); mTextMessage = itemView.findViewById(R.id.text_message); mContainer = itemView.findViewById(R.id.container); } void bind(Message message) { mTextMessage.setText(message.text); if (message.isSent) { // 自己发送的消息,右对齐 mContainer.setGravity(Gravity.END); } else { // 对方发送的消息,左对齐 mContainer.setGravity(Gravity.START); } } }伪代码表示
定义一个静态内部类 MessageViewHolder,并继承自 RecyclerView.ViewHolder 类。该类有两个成员变量:mTextMessage 和 mContainer。在构造函数中通过 findViewById 方法获取对应的控件。该类还有一个 bind 方法,用于将 Message 对象绑定到 ViewHolder 上。在 bind 方法中,首先根据 Message 对象中的文本设置 mTextMessage 的文本;然后根据 Message 对象中的 isSent 属性,判断该消息是自己发送的还是对方发送的,从而设置 mContainer 的重心位置,使得自己发送的消息右对齐,对方发送的消息左对齐。