Question

我在ActionBar中选择一个选项后，在HorizontalScrollView中有一个Activity并排放置ListFragments（就像用户想要的一样多）。

每个ListFragment项都包含TextViews和Button。 SimpleAdapter为每个ListFragment中的每个项填充数据。

我现在面临的问题是每个列表项中的按钮都不响应点击。布局可以总结如下：FragmentActivity内ListFragment内的Button，从最里面的子元素到根视图中的父元素。

我花了很多时间来解决这个问题，但是我无法找到解决方案来让按钮响应点击。我使用的一些方法包括获取按钮的视图和附加onClickListeners，2）为ListFragment实现OnClickListener接口。我也知道ViewGroup类的onInterceptTouchEvent方法，但是我缺乏Android经验使我无法找到解决方案。任何有关解决这个问题的指导或指导都将非常受欢迎。

以下是ListFragment的代码：

package com.example.androidlistfragmenttest;

import java.util.ArrayList;
import java.util.HashMap;
import android.os.Bundle;
import android.support.v4.app.ListFragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.SimpleAdapter;


public class MyFragment extends ListFragment {

private ArrayList<HashMap<String,String>> arraylist;


@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {

    // Inflate the layout for this fragment

    View view = inflater.inflate(R.layout.fragment_layout, container, false);
    Button button = (Button) view.findViewById(R.id.button);
    button.setOnClickListener(new OnClickListener(){


       //THIS DOES NOT PRINT IN LOGCAT. BUTTON DOES NOT RESPOND TO CLICKS.

        @Override
        public void onClick(View arg0) {
            Log.v("GODZILLA","ATOMIC BREATH");

        }

    });
    return view;
}

@Override
public void onActivityCreated(Bundle savedInstanceState){
    super.onActivityCreated(savedInstanceState);
    arraylist = dataGenerator();
    SimpleAdapter adapter = new SimpleAdapter(getActivity().getApplicationContext(), arraylist, R.layout.fragment_layout,new String[]{"KEY"},new int[]{R.id.text_id});
    setListAdapter(adapter);

}


/*
 * Method to populate an adapter's data list.
 */

public ArrayList<HashMap<String,String>> dataGenerator(){

    HashMap<String,String> hashMap1 = new HashMap<String,String>();
    hashMap1.put("KEY", "A");

    HashMap<String,String> hashMap2 = new HashMap<String,String>();
    hashMap2.put("KEY", "B");

    HashMap<String,String> hashMap3 = new HashMap<String,String>();
    hashMap3.put("KEY", "C");

    HashMap<String,String> hashMap4 = new HashMap<String,String>();
    hashMap4.put("KEY", "D");

    HashMap<String,String> hashMap5 = new HashMap<String,String>();
    hashMap5.put("KEY", "E");

    ArrayList<HashMap<String,String>> arraylist = new ArrayList<HashMap<String,String>>();
    arraylist.add(hashMap1);
    arraylist.add(hashMap2);
    arraylist.add(hashMap3);
    arraylist.add(hashMap4);
    arraylist.add(hashMap5);


    return arraylist;
}

} //End of MyFragment

这是包含片段的活动的代码：

package com.example.androidlistfragmenttest;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Stack;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.app.NavUtils;
import android.view.Menu;
import android.view.MenuItem;

public class MainActivity extends FragmentActivity {

    private Stack<String> tagStack;
    private Integer last_tag_number;

public MainActivity(){

    last_tag_number = new Integer("0");
    tagStack = new Stack<String>();
}

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {

    case R.id.add_fragment:
        addColumn();
        return true;


    case R.id.remove_column:
        removeColumn();
        return true;


    case android.R.id.home:
        // This ID represents the Home or Up button. In the case of this
        // activity, the Up button is shown. Use NavUtils to allow users
        // to navigate up one level in the application structure. For
        // more details, see the Navigation pattern on Android Design:
        //
        // http://developer.android.com/design/patterns/navigation.html#up-vs-back
        //
        NavUtils.navigateUpFromSameTask(this);
        return true;

    }
    return super.onOptionsItemSelected(item);
}

/*
 * This method adds a fragment to the screen    
 */

public void addColumn(){

    FragmentManager fragmentManager = getSupportFragmentManager();
    FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
    MyFragment fragment = new MyFragment();
    fragmentTransaction.add(R.id.fragment_activity, fragment,tagGenerator());
    fragmentTransaction.commit();

}

/*
 * This method removes a fragment from the screen
 */

public void removeColumn(){

    if(tagStack.size() != 0){
        FragmentManager fragmentManager = getSupportFragmentManager();
        Fragment fragment = fragmentManager.findFragmentByTag(tagStack.pop());
        FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
        fragmentTransaction.remove(fragment);
        fragmentTransaction.commit();
    }
}

/*
 * This function generates tags for each fragment that is displayed on the screen
 * The tags pose as unique identifiers for each fragment
 */

public String tagGenerator(){

    Integer tag_number; 

    if(last_tag_number.intValue() == 0){
        tag_number = last_tag_number;   
        int temp = last_tag_number.intValue();
        temp+=1;
        last_tag_number = Integer.valueOf(temp);
    }
    else{
        tag_number = new Integer(last_tag_number.intValue());
        int temp = last_tag_number.intValue();
        temp+=1;
        last_tag_number = Integer.valueOf(temp);
    }
    String tag = tag_number.toString();
    tagStack.push(tag);

    return tag;
}



} //End of MainActivity

以及FragmentActivity的布局：

<?xml version="1.0" encoding="utf-8"?>

<HorizontalScrollView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"

>

<LinearLayout  
     android:id="@+id/fragment_activity"
     android:layout_width="fill_parent" 
     android:layout_height = "fill_parent"
     android:orientation = "horizontal"
     android:gravity="center"       
 > 

</LinearLayout>  
</HorizontalScrollView>

ListFragment：

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="300dp"
    android:layout_height="match_parent"
    android:orientation="vertical" 
    android:layout_weight="1"
    android:layout_margin="5dp"
    android:descendantFocusability="blocksDescendants" >

<ListView android:id="@id/android:list"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
/> 

<LinearLayout 
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" 
    android:orientation="horizontal" 
    android:layout_gravity="center"  >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/label" 
        android:layout_gravity="start"

    />

    <TextView 
        android:id="@+id/text_id"
        android:layout_width="0dp"
        android:layout_height="wrap_content" 
        android:layout_weight="1"
        android:layout_gravity="end"
    />

</LinearLayout>

<LinearLayout
    android:layout_height="match_parent"
    android:layout_width="match_parent"
    android:orientation="horizontal" >

     <Button
         android:id="@+id/button"
         android:layout_height="wrap_content"
         android:layout_width="wrap_content"
         android:text="@string/button"
         android:layout_margin="2dp"
         android:layout_marginLeft="2dp"
         android:layout_marginRight="2dp"
      />

 </LinearLayout>

</LinearLayout>

Answer 1

问题是ListItem正在消耗点击，并且没有传递给下面的按钮。

您需要将列表项设置为非活动状态并自行处理点击。在自定义适配器中，添加以下方法以禁用项目（它们覆盖BaseAdapter中的方法）：

@Override
public boolean areAllItemsEnabled() {
    return false;
}

@Override
public boolean isEnabled(int position) {
   return false;
}

编辑：Here is a related question可能会提供更好的解决方案，具体取决于您的设计。

ListFragment中的按钮不可单击

1 个答案: