Android 动态设置Selector工具类

￡神魔★判官ぃ 2023-06-17 03:58 8阅读 0赞

1，动态对button 和ImageView 设置Selector

*  从 drawable 获取图片 id 给 Imageview 添加 selector
 *  从 drawable 获取图片 id 给 Button 添加 selector
 *  从网络获取图片 给 ImageView 设置 selector
 *  从网络获取图片 给 Button 设置 selector
 *  从网络获取图片

/**
    
    * 动态设置 点击事件 selector 的工具类  可以从本地添加  也可以从网络添加
    
    * Created by suwenlai on 16-12-26.
    
    */
    
    
    
    
    
    public class SelectorUtil {
    
    
    
    
    
        /**
    
         * 从 drawable 获取图片 id 给 Imageview 添加 selector
    
         *  @param context 调用方法的 Activity
    
         * @param idNormal 默认图片的 id
    
         * @param idPress  点击图片的 id
    
         * @param iv   点击的 view
    
         */
    
        public static void addSelectorFromDrawable(Context context , int idNormal, int idPress,ImageView iv){
    
    
    
    
    
            StateListDrawable drawable = new StateListDrawable();
    
            Drawable normal = context.getResources().getDrawable(idNormal);
    
            Drawable press = context.getResources().getDrawable(idPress);
    
            drawable.addState(new int[]{android.R.attr.state_pressed},press);
    
            drawable.addState(new int[]{-android.R.attr.state_pressed},normal);
    
            iv.setBackgroundDrawable(drawable);
    
        }
    
    
    
    
    
        /**
    
         * 从 drawable 获取图片 id 给 Button 添加 selector
    
         * @param context 调用方法的 Activity
    
         * @param idNormal 默认图片的 id
    
         * @param idPress  点击图片的 id
    
         * @param button   点击的 view
    
         */
    
    
    
    
    
        public static void addSelectorFromDrawable(Context context , int idNormal, int idPress,Button button){
    
    
    
    
    
            StateListDrawable drawable = new StateListDrawable();
    
            Drawable normal = context.getResources().getDrawable(idNormal);
    
            Drawable press = context.getResources().getDrawable(idPress);
    
            drawable.addState(new int[]{android.R.attr.state_pressed},press);
    
            drawable.addState(new int[]{-android.R.attr.state_pressed},normal);
    
            button.setBackgroundDrawable(drawable);
    
        }
    
    
    
    
    
        /**
    
         * 从网络获取图片 给 ImageView 设置 selector
    
         *  @param clazz 调用方法的类
    
         * @param normalUrl 获取默认图片的链接
    
         * @param pressUrl 获取点击图片的链接
    
         * @param imageView 点击的 view
    
         */
    
        public static void addSeletorFromNet(final Class clazz, final String normalUrl, final String pressUrl, final ImageView imageView){
    
            new AsyncTask<Void,Void,Drawable>(){
    
    
    
    
    
                @Override
    
                protected Drawable doInBackground(Void... params) {
    
                    StateListDrawable drawable = new StateListDrawable();
    
                    Drawable normal = loadImageFromNet(clazz,normalUrl);
    
                    Drawable press = loadImageFromNet(clazz, pressUrl);
    
                    drawable.addState(new int[]{android.R.attr.state_pressed},press);
    
                    drawable.addState(new int[]{-android.R.attr.state_pressed},normal);
    
                    return drawable;
    
                }
    
    
    
    
    
                @Override
    
                protected void onPostExecute(Drawable drawable) {
    
                    super.onPostExecute(drawable);
    
                    imageView.setBackgroundDrawable(drawable);
    
                }
    
            }.execute();
    
    
    
    
    
        }
    
    
    
    
    
        /**
    
         *
    
         * 从网络获取图片 给 Button 设置 selector
    
         * @param clazz 调用方法的类
    
         * @param normalUrl 获取默认图片的链接
    
         * @param pressUrl 获取点击图片的链接
    
         * @param button 点击的 view
    
         */
    
        public static void addSeletorFromNet(final Class clazz, final String normalUrl, final String pressUrl, final Button button){
    
            new AsyncTask<Void,Void,Drawable>(){
    
    
    
    
    
                @Override
    
                protected Drawable doInBackground(Void... params) {
    
                    StateListDrawable drawable = new StateListDrawable();
    
                    Drawable normal = loadImageFromNet(clazz,normalUrl);
    
                    Drawable press = loadImageFromNet(clazz, pressUrl);
    
                    drawable.addState(new int[]{android.R.attr.state_pressed},press);
    
                    drawable.addState(new int[]{-android.R.attr.state_pressed},normal);
    
                    return drawable;
    
                }
    
    
    
    
    
                @Override
    
                protected void onPostExecute(Drawable drawable) {
    
                    super.onPostExecute(drawable);
    
                    button.setBackgroundDrawable(drawable);
    
                }
    
            }.execute();
    
    
    
    
    
        }
    
    
    
    
    
        /**
    
         * 从网络获取图片
    
         * @param clazz 调用方法的类
    
         * @param netUrl 获取图片的链接
    
         * @return  返回一个 drawable 类型的图片
    
         */
    
        private static Drawable loadImageFromNet(Class clazz, String netUrl) {
    
            Drawable drawable =null;
    
            try {
    
                drawable = Drawable.createFromStream(new URL(netUrl).openStream(), "netUrl.jpg");
    
            } catch (IOException e) {
    
                MyLog.e(clazz.getName(),e.getMessage());
    
            }
    
    
    
    
    
            return drawable;
    
        }
    
    }

Android XML资源文件相关：[https://blog.csdn.net/cricket\_7/category\_9540223.html][https_blog.csdn.net_cricket_7_category_9540223.html]

[https_blog.csdn.net_cricket_7_category_9540223.html]: https://blog.csdn.net/cricket_7/category_9540223.html