android AbsListView listselector

最新推荐文章于 2021-02-13 05:24:57 发布

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最新推荐文章于 2021-02-13 05:24:57 发布

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CC 4.0 BY-SA版权

本文链接：https://blog.youkuaiyun.com/proud2005/article/details/11776579

本文介绍了一个关于GridView中ListSelector设置的问题及其解决方案。通过修改list_selector_background.xml文件中的状态选择器，可以实现自定义的列表项高亮效果。

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在用gridview时设置listselector时总是设置有问题，不设置用系统自带的橙黄色的就没有问题，

找下源码发现系统定义的listselector如下：

 private void useDefaultSelector() {
        setSelector(getResources().getDrawable(
                com.android.internal.R.drawable.list_selector_background));
    }

list_selector_background.xml如下

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (C) 2008 The Android Open Source Project

     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
     You may obtain a copy of the License at
  
          http://www.apache.org/licenses/LICENSE-2.0
  
     Unless required by applicable law or agreed to in writing, software
     distributed under the License is distributed on an "AS IS" BASIS,
     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     See the License for the specific language governing permissions and
     limitations under the License.
-->

<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:state_window_focused="false" android:drawable="@color/transparent" />

    <!-- Even though these two point to the same resource, have two states so the drawable will invalidate itself when coming out of pressed state. -->
    <item android:state_focused="true"  android:state_enabled="false" android:state_pressed="true" android:drawable="@drawable/list_selector_background_disabled" />
    <item android:state_focused="true"  android:state_enabled="false"                              android:drawable="@drawable/list_selector_background_disabled" />
    <item android:state_focused="true"                                android:state_pressed="true" android:drawable="@drawable/list_selector_background_transition" />
    <item android:state_focused="false"                               android:state_pressed="true" android:drawable="@drawable/list_selector_background_transition" />
    <item android:state_focused="true"                                                             android:drawable="@drawable/list_selector_background_focus" />
    
</selector>

list_selector_background_transition.xml文件如下

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (C) 2008 The Android Open Source Project

     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
     You may obtain a copy of the License at
  
          http://www.apache.org/licenses/LICENSE-2.0
  
     Unless required by applicable law or agreed to in writing, software
     distributed under the License is distributed on an "AS IS" BASIS,
     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     See the License for the specific language governing permissions and
     limitations under the License.
-->

<transition xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@android:drawable/list_selector_background_pressed"  />
    <item android:drawable="@android:drawable/list_selector_background_longpress"  />
</transition>

对着改就好了。