Android动态获取资源ID_android 获取style属性中的drawable id-优快云博客

本文链接：https://blog.youkuaiyun.com/baidu_24743861/article/details/120700340

该代码段展示了如何在Android中动态获取不同类型的资源ID，如anim、animator、attr等，通过ResourceUtils工具类提供了一系列静态方法，简化了资源ID的获取过程。这些方法接受Context、资源类型和应用包名为参数，返回相应的资源ID。

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API：getIdentifier（"资源ID名称"，"资源类型"，"应用包名"）;

getIdentifier（"headImg"，"drawable","com.demo.xxxx"）;

/**
 * 动态获取资源ID
 */
public class ResourceUtils {

    public static int getAnimId(Context context, String defType) {
        return context.getResources().getIdentifier(defType, "anim", context.getPackageName());
    }
    public static int getAnimatorId(Context context, String defType) {
        return context.getResources().getIdentifier(defType, "animator", context.getPackageName());
    }
    public static int getAttrId(Context context, String defType) {
        return context.getResources().getIdentifier(defType, "attr", context.getPackageName());
    }

    public static int getBoolId(Context context, String defType) {
        return context.getResources().getIdentifier(defType, "bool", context.getPackageName());
    }

    public static int getColorId(Context context, String defType) {
        return context.getResources().getIdentifier(defType, "color", context.getPackageName());
    }

    public static int getDimenId(Context context, String defType) {
        return context.getResources().getIdentifier(defType, "dimen", context.getPackageName());
    }

    public static int getDrawableId(Context context, String defType) {
        return context.getResources().getIdentifier(defType, "drawable", context.getPackageName());
    }

    public static int getId(Context context, String defType) {
        return context.getResources().getIdentifier(defType, "id", context.getPackageName());
    }

    public static int getIntegerId(Context context, String defType) {
        return context.getResources().getIdentifier(defType, "integer", context.getPackageName());
    }

    public static int getInterpolatorId(Context context, String defType) {
        return context.getResources().getIdentifier(defType, "interpolator", context.getPackageName());
    }

    public static int getLayoutId(Context context, String defType) {
        return context.getResources().getIdentifier(defType, "layout", context.getPackageName());
    }

    public static int getPluralsId(Context context, String defType) {
        return context.getResources().getIdentifier(defType, "plurals", context.getPackageName());
    }

    public static int getStringId(Context context, String defType) {
        return context.getResources().getIdentifier(defType, "string", context.getPackageName());
    }

    public static int getStyleId(Context context, String defType) {
        return context.getResources().getIdentifier(defType, "style", context.getPackageName());
    }

    public static int getStyleableId(Context context, String defType) {
        return context.getResources().getIdentifier(defType, "styleable", context.getPackageName());
    }

    public static int getXmlId(Context context, String defType) {
        return context.getResources().getIdentifier(defType, "xml", context.getPackageName());
    }

    public static int getMipmapId(Context context, String defType) {
        return context.getResources().getIdentifier(defType, "mipmap", context.getPackageName());
    }

    /**
     * 通过反射来读取int[]类型资源Id
     * @param context
     * @param name
     * @return
     */
    public static final int[] getResourceDeclareStyleableIntArray(Context context, String name) {
        try {
            Field[] fields2 = Class.forName(context.getPackageName() + ".R$styleable" ).getFields();
            for (Field f : fields2 ){
                if (f.getName().equals(name)){
                    int[] ret = (int[])f.get(null);
                    return ret;
                }
            }
        }
        catch (Throwable t){
        }
        return null;
    }
}