Onclicklistner不在列表视图片段工作(Onclicklistner not workin

2019-07-20 16:03发布

我有一个在listfragment自定义适配器,还可以设置为onclicklistner列表视图列表视图。 但Onclicklistner不起作用。

这里是我的代码:

public class BasicFragment extends ListFragment {

ListView lv;
MyCustomAdapter adapter;

@Override
public void onCreate(Bundle si) {
    super.onCreate(si);
}

@Override
public void onActivityCreated(Bundle b) {
    super.onActivityCreated(b);
}

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

    View view = inflater.inflate(R.layout.fragment_basic, container, false);
    lv = (ListView) view.findViewById(android.R.id.list);
    FetchedData DT = FetchedData.StaticDataTransfer();
    RecepiesProperties[] AryObjaz = DT.getData();
    getdata(AryObjaz);
    adapter = new MyCustomAdapter(getActivity(), R.layout.listview_layout,
            Dataset);
    lv.setAdapter(adapter);

    lv.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                long arg3) {
            Toast t = Toast.makeText(getActivity(), "Message",
                    Toast.LENGTH_SHORT);
            t.show();
        }
    });

    return view;
}}

MyCustomAdapter.java

public class MyCustomAdapter extends ArrayAdapter<Recipes> {

Context context;
int layoutResourceId;
Recipes data[] = null;
Typeface typeface;
public ImageLoader imageLoader;

public MyCustomAdapter(Context context, int textViewResourceId,
        Recipes[] dataset) {
    super(context, textViewResourceId, dataset);
    this.layoutResourceId = textViewResourceId;
    this.context = context;
    this.data = dataset;
    imageLoader = new ImageLoader(context.getApplicationContext());
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    View row = convertView;

    LayoutInflater inflater = ((Activity) context).getLayoutInflater();
    row = inflater.inflate(layoutResourceId, parent, false);
    RecipesHolder holder = new RecipesHolder();
    holder.imgIcon = (ImageView) row.findViewById(R.id.imageView1);
    holder.txtTitle = (TextView) row.findViewById(R.id.title);
    holder.category = (TextView) row.findViewById(R.id.category);
    holder.source = (TextView) row.findViewById(R.id.source);
    holder.country = (TextView) row.findViewById(R.id.country);
    holder.readytime = (TextView) row.findViewById(R.id.readytime);
    holder.tips = (Button) row.findViewById(R.id.tips);
    holder.fav = (Button) row.findViewById(R.id.fav);

    Recipes ap = data[position];

    imageLoader.DisplayImage(ap.getIMAGENAME240(), holder.imgIcon);
    holder.txtTitle.setText(ap.getNAME());
    holder.category.setText(ap.getCATEGORY());
    holder.source.setText(ap.getSOURCE());
    holder.country.setText(ap.getCOUNTRY());
    holder.readytime.setText(ap.getREADYTIME());

    return row;
}

static class RecipesHolder {
    ImageView imgIcon;
    TextView txtTitle;
    TextView category;
    TextView source;
    TextView country;
    TextView readytime;
    Button tips;
    Button fav;
}}

//listview_layout.xml

<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"><ImageView
    android:id="@+id/imageView1"
    android:layout_width="100dp"
    android:layout_height="100dp"
    android:layout_alignParentLeft="true"
    android:focusable="true"
    android:layout_alignParentTop="true"
    android:layout_marginLeft="5dp"
    android:layout_marginTop="10dp" />

<TextView
    android:id="@+id/readytime"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignBaseline="@+id/country"
    android:layout_alignBottom="@+id/country"
    android:layout_marginLeft="73dp"
    android:layout_toRightOf="@+id/country"
    android:focusable="true"
    android:text="TextView"
    android:textColor="#000" />

<TextView
    android:id="@+id/country"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignBottom="@+id/imageView1"
    android:layout_alignLeft="@+id/source"
    android:focusable="true"
    android:text="TextView"
    android:textColor="#000" />

<TextView
    android:id="@+id/source"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_above="@+id/country"
    android:layout_alignLeft="@+id/category"
    android:focusable="true"
    android:text="TextView"
    android:textColor="#000" />

<TextView
    android:id="@+id/category"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_above="@+id/source"
    android:layout_alignLeft="@+id/title"
    android:text="TextView"
    android:focusable="true"
    android:textColor="#000" />

<TextView
    android:id="@+id/title"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_above="@+id/category"
    android:layout_toRightOf="@+id/imageView1"
    android:text="TextView"
    android:focusable="true"
    android:textColor="#000" />

<Button
    android:id="@+id/fav"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/tips"
    android:layout_below="@+id/source"
    android:focusable="true"
    android:background="@drawable/favourite" />

<Button
    android:id="@+id/tips"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentRight="true"
    android:layout_alignTop="@+id/textView1"
    android:layout_marginRight="14dp"
    android:background="@drawable/yellow" /></RelativeLayout>

Answer 1:

终于解决了这个问题,当列表视图中的所有控件(按钮,textviews)设置为可聚焦假。



Answer 2:

检查MyCustomAdapter,有些部件(如:按钮,ImageButton的)在自定义布局会消耗click事件,然后onItemClick将永远不会被调用。

请使用您adaper的getView方法,下面的代码,以获得onclick事件。

     row.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {

        }
    });


Answer 3:

按照Android的API文档:

ListFragment具有由单个列表视图的默认布局。 但是,如果你愿意,你可以从onCreateView(LayoutInflater,ViewGroup中,捆绑)返回自己的视图层次定制片段布局。 要做到这一点,您的视图层次结构中必须包含id为一个ListView对象“@android:ID /列表”(或列表,如果它在代码)

既然你没有张贴碎片的布局文件我不知道出了什么错在这里。 下面的代码是当您使用ListFragment的默认列表视图应该如何。 如果您使用的是ListFragment你应该充分利用可用像其他方法setListAdapteronListItemClick 。 你还可以做同样的事情,而不使用ListFragment(只使用片段)。

所述片段代码(修改您的代码部件)

public class BasicFragment extends ListFragment {

    MyCustomAdapter adapter;

    @Override
    public void onCreate(Bundle si) {
        super.onCreate(si);
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        // not sure what you are doing here but data fetch should be asynchronous if it interacts with DB or makes network call
        FetchedData DT = FetchedData.StaticDataTransfer();
        RecepiesProperties[] AryObjaz = DT.getData();
        getdata(AryObjaz);
        adapter = new MyCustomAdapter(getActivity(), R.layout.listview_layout, Dataset);
        setListAdapter(adapter);
    }

    @Override
    public void onListItemClick(ListView l, View v, int position, long id) {
        Toast t = Toast.makeText(getActivity(), "Message",
        Toast.LENGTH_SHORT);
        t.show();

    }
}

此外,我修改了适配器代码,以帮助回收的观点,当前的代码是不使用视图回收和总是夸大的看法。

适配器代码:

public class MyCustomAdapter extends ArrayAdapter<Recipes> {

    Context context;
    int layoutResourceId;
    Recipes data[] = null;
    Typeface typeface;
    public ImageLoader imageLoader;
    private LayoutInflater inflater;

    public MyCustomAdapter(Context context, int textViewResourceId, Recipes[] dataset) {
        super(context, textViewResourceId, dataset);
        this.layoutResourceId = textViewResourceId;
        this.context = context;
        this.data = dataset;
        imageLoader = new ImageLoader(context.getApplicationContext());
        inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View row = convertView;
        RecipesHolder holder = null;
        //recycling views
        if(null == row){
            row = inflater.inflate(layoutResourceId, parent, false);
            holder = new RecipesHolder();
            holder.imgIcon = (ImageView) row.findViewById(R.id.imageView1);
            holder.txtTitle = (TextView) row.findViewById(R.id.title);
            holder.category = (TextView) row.findViewById(R.id.category);
            holder.source = (TextView) row.findViewById(R.id.source);
            holder.country = (TextView) row.findViewById(R.id.country);
            holder.readytime = (TextView) row.findViewById(R.id.readytime);
            holder.tips = (Button) row.findViewById(R.id.tips);
            holder.fav = (Button) row.findViewById(R.id.fav);
            row.setTag(holder);
        }else{
            holder = (RecipesHolder)row.getTag();
        }
        Recipes ap = data[position];

        imageLoader.DisplayImage(ap.getIMAGENAME240(), holder.imgIcon);
        holder.txtTitle.setText(ap.getNAME());
        holder.category.setText(ap.getCATEGORY());
        holder.source.setText(ap.getSOURCE());
        holder.country.setText(ap.getCOUNTRY());
        holder.readytime.setText(ap.getREADYTIME());

        return row;
    }

    static class RecipesHolder {
        ImageView imgIcon;
        TextView txtTitle;
        TextView category;
        TextView source;
        TextView country;
        TextView readytime;
        Button tips;
        Button fav;
    }
}


Answer 4:

当你夸大你的意见,似乎你的观点有2个按钮它:

row.findViewById(R.id.tips);

row.findViewById(R.id.fav);

您应该删除这些按钮(带textviews替换他们,如果你不想让自己的点击)

或者,如果你希望这些按钮的点击,您可以使用OnClickListeners每个按钮和另一OnClickListener整个视图。


@Override
public View getView(int position, View convertView, ViewGroup parent) {
    View row = convertView;

    //we only inflate if the row is null!!
    if(row == null) {
        LayoutInflater inflater = ((Activity) context).getLayoutInflater();
        row = inflater.inflate(layoutResourceId, parent, false);
        RecipesHolder holder = new RecipesHolder();
        holder.imgIcon = (ImageView) row.findViewById(R.id.imageView1);
        holder.txtTitle = (TextView) row.findViewById(R.id.title);
        holder.category = (TextView) row.findViewById(R.id.category);
        holder.source = (TextView) row.findViewById(R.id.source);
        holder.country = (TextView) row.findViewById(R.id.country);
        holder.readytime = (TextView) row.findViewById(R.id.readytime);
        holder.tips = (Button) row.findViewById(R.id.tips);
        holder.fav = (Button) row.findViewById(R.id.fav);
        //we set the tag of the view to this holder so we can get it everytime
        row.setTag(holder);
    }
    //change this to final so that you can use it inside your click listeners
    final Recipes ap = data[position];

    //here we get the holder of the view from its tag
    RecipesHolder holder = (RecipesHolder) row.getTag();

    //no changes to ur setup
    imageLoader.DisplayImage(ap.getIMAGENAME240(), holder.imgIcon);
    holder.txtTitle.setText(ap.getNAME());
    holder.category.setText(ap.getCATEGORY());
    holder.source.setText(ap.getSOURCE());
    holder.country.setText(ap.getCOUNTRY());
    holder.readytime.setText(ap.getREADYTIME());

    //now the click listeners

    //tips button
    holder.tips.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
            //tips has been clicked
            //do whatever you want with `ap`
        }
    });
    //fav button
    holder.fav.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
            //fav has been clicked
            //do whatever you want with `ap`
        }
    });
    //whole item click
    row.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
            //the row has been clicked
            //do whatever you want with `ap`
        }
    });
    return row;
}


Answer 5:

把下面的代码在onViewCreated()方法:

@Override
public void onViewCreated(View view, Bundle savedInstanceState) {

    ListView list = (ListView) view.findViewById(android.R.id.list);

    list.setOnItemClickListener(new OnItemClickListener() {
        public void onItemClick(AdapterView<?> parent, View view,
                int position, long id) {
                      Toast t = Toast.makeText(getActivity(), "Message",
                             Toast.LENGTH_SHORT);
                      t.show();
        }
    }); 

}

问题可能在于,在onViewCreate()的观点并没有构成可事实,所以它不是建议设置听众那里。



Answer 6:

 lv.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> parent, View view,
                int position, long id) {
                //your code
        }
   });

我想,这应该工作



Answer 7:

适配器已方法areAllItemsEnabled(),它可能是有用的。

公共抽象布尔areAllItemsEnabled()

表示该适配器的所有物品是否被启用。 如果此方法的返回值随时间而改变,也不能保证它会生效。 如果属实,这意味着所有项目都选择和点击(没有分隔符。)



Answer 8:

@Override

public void onListItemClick(ListView l, View v, int position, long id) {
    // TODO Auto-generated method stub
    super.onListItemClick(l, v, position, id);
}


Answer 9:

只要把android:focusable="false" android:clickable="false"的布局。 对于所有textviews,按钮等问题就迎刃而解了。



Answer 10:

我有一个类似的问题,我花了很长的时间来弄清楚什么是错的。 以前我的片段的onListItemClick()开辟了新的活动,但久违的片段后onListItemClick()侦听器没工作了。

@Override
public void onListItemClick(ListView l, View v, int position, long id) {
    super.onListItemClick(l, v, position, id);
    // additional code (e.g. open new activity)
}

这个问题是通过创建我的自定义内的监听器,而不是ArrayAdapter解决。 我放置getView()的内部这样的代码:

    rowView.setOnClickListener(new View.OnClickListener() {
        final int p = position;
        @Override
        public void onClick(View v) {
            Log.d("FeedListAdapter", "onClick()");
            openPost(p);    // for example
        }
    });

我彻夜未眠解决这个(它的)上午8时,我想我应该张贴我为别人谁是相似的点解决方案:)



文章来源: Onclicklistner not working in fragment listview