getDrawable(int id) getColor(int id) is deprecate 已过时

写代码是发现：

推荐使用：

为了兼容高、低版本 可以采用

ContextCompat.getColor(Context context, int id);

以下为getColor(int id)源码(Resource.java)：

/** * Returns a color integer associated with a particular resource ID. If the * resource holds a complex {@link ColorStateList}, then the default color * from the set is returned. * * @param id The desired resource identifier, as generated by the aapt *           tool. This integer encodes the package, type, and resource *           entry. The value 0 is an invalid identifier. * * @throws NotFoundException Throws NotFoundException if the given ID does *         not exist. * * @return A single color value in the form 0xAARRGGBB. * @deprecated Use {@link #getColor(int, Theme)} instead. */@ColorInt@Deprecatedpublic int getColor(@ColorRes int id) throws NotFoundException {    return getColor(id, null);}

改方法中采用了新方法获取资源 getColor(@ColorRes int id, @Nullable Theme theme)

/** * Returns a themed color integer associated with a particular resource ID. * If the resource holds a complex {@link ColorStateList}, then the default * color from the set is returned. * * @param id The desired resource identifier, as generated by the aapt *           tool. This integer encodes the package, type, and resource *           entry. The value 0 is an invalid identifier. * @param theme The theme used to style the color attributes, may be *              {@code null}. * * @throws NotFoundException Throws NotFoundException if the given ID does *         not exist. * * @return A single color value in the form 0xAARRGGBB. */@ColorIntpublic int getColor(@ColorRes int id, @Nullable Theme theme) throws NotFoundException {    final TypedValue value = obtainTempTypedValue();    try {        final ResourcesImpl impl = mResourcesImpl;        impl.getValue(id, value, true);        if (value.type >= TypedValue.TYPE_FIRST_INT                && value.type <= TypedValue.TYPE_LAST_INT) {            return value.data;        } else if (value.type != TypedValue.TYPE_STRING) {            throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id)                    + " type #0x" + Integer.toHexString(value.type) + " is not valid");        }        final ColorStateList csl = impl.loadColorStateList(this, value, id, theme);        return csl.getDefaultColor();    } finally {        releaseTempTypedValue(value);    }}

为了兼容高、低版本 可以采用

ContextCompat.getColor(Context context, int id);

代码如下：

/** * Returns a color associated with a particular resource ID * <p> * Starting in {@link android.os.Build.VERSION_CODES#M}, the returned * color will be styled for the specified Context's theme. * * @param id The desired resource identifier, as generated by the aapt *           tool. This integer encodes the package, type, and resource *           entry. The value 0 is an invalid identifier. * @return A single color value in the form 0xAARRGGBB. * @throws android.content.res.Resources.NotFoundException if the given ID *         does not exist. */@ColorIntpublic static final int getColor(Context context, @ColorRes int id) {    final int version = Build.VERSION.SDK_INT;    if (version >= 23) {        return ContextCompatApi23.getColor(context, id);    } else {        return context.getResources().getColor(id);    }}

ContextCompatApi23.getColor(context, id) 方法代码如下：

class ContextCompatApi23 {    public static ColorStateList getColorStateList(Context context, int id) {        return context.getColorStateList(id);    }    public static int getColor(Context context, int id) {        return context.getColor(id);    }}

context.getColor(id) 方法代码如下：

/** * Returns a color associated with a particular resource ID and styled for * the current theme. * * @param id The desired resource identifier, as generated by the aapt *           tool. This integer encodes the package, type, and resource *           entry. The value 0 is an invalid identifier. * @return A single color value in the form 0xAARRGGBB. * @throws android.content.res.Resources.NotFoundException if the given ID *         does not exist. */@ColorIntpublic final int getColor(@ColorRes int id) {    return getResources().getColor(id, getTheme());}

getDrawable(int id) 采用了类似于 getColor(int id) 方法