Question

我想点击它时突出显示列表项。我写了下面的代码，但它不起作用。我希望点击列表视图中的特定项目。

MainActivity.java



 ListView lv = getListView();
                    lv.setSelector( R.drawable.list_selector);
                    // on selecting single product
                    // launching Edit Product Screen
                    lv.setOnItemClickListener(new OnItemClickListener() {

                        @Override
                        public void onItemClick(AdapterView<?> parent, View view,
                                int position, long id) {
                            // getting values from selected ListItem
                            String FC_DATE = ((TextView) view.findViewById(R.id.fc_date)).getText()
                                    .toString();

                            // Starting new intent
                            Intent in = new Intent(getApplicationContext(),
                                    ForecastActivity.class);
                            // sending lat/long to next activity

                            in.putExtra(TAG_FC_DATE, FC_DATE);
                            in.putExtra(TAG_LAT, LAT);
                            in.putExtra(TAG_LONG, LONGITUDE);
                            // starting new activity and expecting some response back
                            startActivityForResult(in, 100);
                        }
                    });



list_selector.xml

       <?xml version="1.0" encoding="utf-8"?>
        <selector xmlns:android="http://schemas.android.com/apk/res/android">
        <!-- Selector style for listrow -->
        <item 
         android:state_selected="false"
            android:state_pressed="false" 
            android:drawable="@drawable/gradient_bg" />
        <item android:state_pressed="true" 
            android:drawable="@drawable/gradient_bg_hover" />
        <item android:state_selected="true"
         android:state_pressed="false" 
            android:drawable="@drawable/gradient_bg_hover" />
        </selector>

Answer 1

listitem_selector.xml：

<selector xmlns:android="http://schemas.android.com/apk/res/android" >
    <item android:state_enabled="true" 
     android:state_pressed="true" android:drawable="@drawable/gradient_bg_hover" />
    <item android:state_enabled="true"
     android:state_focused="true" android:drawable="@drawable/gradient_bg_hover" />
    <item android:state_enabled="true"
     android:state_selected="true" android:drawable="@drawable/gradient_bg_hover" />
    <item
     android:drawable="@drawable/gradient_bg" />
</selector>

将列表项选择器设置为ListView：

<ListView 
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:listSelector="@drawable/listitem_selector" />

在android中的listview中单击时突出显示ListItem

1 个答案: